refactor(googleplay): 新增并发发货防护并优化订单状态流转

将 ApplePurchaseServiceImpl、GooglePlayEntitlementApplier 与 GooglePlayWalletBenefitService 中记录的 productId 改为 productName，保持日志与业务语义一致。

.gitignore

@@ -51,3 +51,5 @@ build/
 /src/main/resources/static/ws-test.html
 /.omc/
 /logs/
+/src/main/resources/sql/google-play-iap.sql
+/docs/google-play-iap-integration.md

src/main/java/com/yolo/keyborad/MyApplication.java

@@ -2,6 +2,7 @@ package com.yolo.keyborad;
 
 import com.yolo.keyborad.common.xfile.ByteFileWrapperAdapter;
 import com.yolo.keyborad.config.AppleAppStoreProperties;
+import com.yolo.keyborad.config.GooglePlayProperties;
 import lombok.extern.slf4j.Slf4j;
 import org.dromara.x.file.storage.core.tika.ContentTypeDetect;
 import org.dromara.x.file.storage.spring.EnableFileStorage;
@@ -14,7 +15,7 @@ import org.springframework.context.annotation.Bean;
 
 @Slf4j
 @SpringBootApplication
-@EnableConfigurationProperties(AppleAppStoreProperties.class)
+@EnableConfigurationProperties({AppleAppStoreProperties.class, GooglePlayProperties.class})
 @EnableFileStorage
 public class MyApplication {
     public static void main(String[] args) {

src/main/java/com/yolo/keyborad/common/ErrorCode.java

@@ -76,9 +76,16 @@ public enum ErrorCode {
     AUDIO_FILE_TOO_LARGE(40017, "音频文件过大"),
     AUDIO_FORMAT_NOT_SUPPORTED(40018, "音频格式不支持"),
     STT_SERVICE_ERROR(50031, "语音转文字服务异常"),
+    GOOGLE_PLAY_NOT_ENABLED(50032, "Google Play 服务未启用"),
+    GOOGLE_PLAY_PACKAGE_NAME_MISSING(50033, "Google Play packageName 未配置"),
+    GOOGLE_PLAY_PURCHASE_MISMATCH(50034, "Google Play 购买信息不匹配"),
+    GOOGLE_PLAY_WEBHOOK_UNAUTHORIZED(50035, "Google Play RTDN 来源校验失败"),
+    GOOGLE_PLAY_RTDN_PAYLOAD_INVALID(50036, "Google Play RTDN payload 非法"),
+    GOOGLE_PLAY_STATE_INVALID(50037, "Google Play 购买状态非法"),
     REPORT_TYPE_INVALID(40020, "举报类型无效"),
     REPORT_COMPANION_ID_EMPTY(40021, "被举报的AI角色ID不能为空"),
     REPORT_TYPE_EMPTY(40022, "举报类型不能为空"),
+    ACCOUNT_RECENTLY_CANCELLED(50038, "账号注销未满7天，暂不允许注册"),
     VERSION_NOT_FOUND(40022, "未找到可用的版本配置");
 
     /**
@@ -104,4 +111,4 @@ public enum ErrorCode {
     public String getCodeAsString() {
         return String.valueOf(code);
     }
-}
+}

src/main/java/com/yolo/keyborad/config/AppConfig.java

@@ -26,6 +26,8 @@ public class AppConfig {
 
     private LLmModel llmModel = new LLmModel();
 
+
+
     @Data
     public static class UserRegisterProperties {
 
@@ -64,6 +66,8 @@ public class AppConfig {
 
         //聊天消息最大长度
         private Integer maxMessageLength = 1000;
+
+        private String companionSystemPrompt = "";
     }
 
     @Data

src/main/java/com/yolo/keyborad/config/GooglePlayHttpConfig.java

@@ -0,0 +1,18 @@
+package com.yolo.keyborad.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import java.net.http.HttpClient;
+import java.time.Duration;
+
+@Configuration
+public class GooglePlayHttpConfig {
+
+    @Bean
+    public HttpClient googlePlayHttpClient() {
+        return HttpClient.newBuilder()
+                .connectTimeout(Duration.ofSeconds(10))
+                .build();
+    }
+}

src/main/java/com/yolo/keyborad/config/GooglePlayProperties.java

@@ -0,0 +1,35 @@
+package com.yolo.keyborad.config;
+
+import lombok.Data;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+
+@Data
+@ConfigurationProperties(prefix = "google.play")
+public class GooglePlayProperties {
+
+    private boolean enabled;
+
+    private String packageName;
+
+    private String serviceAccountKeyPath;
+
+    private String oauthTokenUri = "https://oauth2.googleapis.com/token";
+
+    private String androidPublisherScope = "https://www.googleapis.com/auth/androidpublisher";
+
+    private String pubsubTokenInfoUri = "https://oauth2.googleapis.com/tokeninfo";
+
+    private boolean validatePubsubJwt = true;
+
+    private boolean requireObfuscatedAccountId = false;
+
+    private Pubsub pubsub = new Pubsub();
+
+    @Data
+    public static class Pubsub {
+        private String expectedTopic;
+        private String expectedSubscription;
+        private String audience;
+        private String serviceAccountEmail;
+    }
+}

src/main/java/com/yolo/keyborad/config/SaTokenConfigure.java

@@ -86,8 +86,11 @@ public class SaTokenConfigure implements WebMvcConfigurer {
                 "/character/listByTagWithNotLogin",
                 "/ai-companion/report",
                 "/apple/notification",
+                "/google-play/rtdn",
                 "/appVersions/checkUpdate",
-                "/character/detailWithNotLogin"
+                "/appVersions/checkUpdate",
+                "/character/detailWithNotLogin",
+                "/apple/validate-receipt"
         };
     }
     @Bean

src/main/java/com/yolo/keyborad/controller/AppleReceiptController.java

@@ -7,6 +7,7 @@ import com.yolo.keyborad.common.ResultUtils;
 import com.yolo.keyborad.exception.BusinessException;
 import com.yolo.keyborad.model.dto.AppleReceiptValidationResult;
 import com.yolo.keyborad.service.ApplePurchaseService;
+import com.yolo.keyborad.service.KeyboardUserPurchaseRecordsService;
 import com.yolo.keyborad.service.AppleReceiptService;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
@@ -23,11 +24,14 @@ public class AppleReceiptController {
 
     private final AppleReceiptService appleReceiptService;
     private final ApplePurchaseService applePurchaseService;
+    private final KeyboardUserPurchaseRecordsService purchaseRecordsService;
 
     public AppleReceiptController(AppleReceiptService appleReceiptService,
-                                  ApplePurchaseService applePurchaseService) {
+                                  ApplePurchaseService applePurchaseService,
+                                  KeyboardUserPurchaseRecordsService purchaseRecordsService) {
         this.appleReceiptService = appleReceiptService;
         this.applePurchaseService = applePurchaseService;
+        this.purchaseRecordsService = purchaseRecordsService;
     }
 
     @PostMapping("/receipt")
@@ -85,4 +89,26 @@ public class AppleReceiptController {
         return ResultUtils.success(Boolean.TRUE);
     }
 
+    /**
+     * 检查购买记录是否存在
+     * 根据 transactionId 和 originalTransactionId 查询购买记录
+     *
+     * @param body 请求体，包含 transactionId 和 originalTransactionId
+     * @return 存在返回 true，不存在返回 false
+     */
+    @PostMapping("/check-purchase")
+    public BaseResponse<Boolean> checkPurchaseExists(@RequestBody Map<String, String> body) {
+        if (body == null) {
+            throw new BusinessException(ErrorCode.PARAMS_ERROR, "body 不能为空");
+        }
+        String transactionId = body.get("transactionId");
+        String originalTransactionId = body.get("originalTransactionId");
+        if ((transactionId == null || transactionId.isBlank())
+                && (originalTransactionId == null || originalTransactionId.isBlank())) {
+            throw new BusinessException(ErrorCode.PARAMS_ERROR, "transactionId 和 originalTransactionId 不能同时为空");
+        }
+
+        boolean exists = purchaseRecordsService.checkPurchaseExists(transactionId, originalTransactionId);
+        return ResultUtils.success(exists);
+    }
 }

src/main/java/com/yolo/keyborad/controller/GooglePlayController.java

@@ -0,0 +1,36 @@
+package com.yolo.keyborad.controller;
+
+import cn.dev33.satoken.stp.StpUtil;
+import com.yolo.keyborad.common.BaseResponse;
+import com.yolo.keyborad.common.ResultUtils;
+import com.yolo.keyborad.model.dto.googleplay.GooglePlayPubSubPushRequest;
+import com.yolo.keyborad.model.dto.googleplay.GooglePlayPurchaseVerifyReq;
+import com.yolo.keyborad.model.vo.googleplay.GooglePlayPurchaseVerifyResp;
+import com.yolo.keyborad.service.GooglePlayBillingService;
+import jakarta.servlet.http.HttpServletRequest;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/google-play")
+@RequiredArgsConstructor
+public class GooglePlayController {
+
+    private final GooglePlayBillingService googlePlayBillingService;
+
+    @PostMapping("/purchases/verify")
+    public BaseResponse<GooglePlayPurchaseVerifyResp> verify(@RequestBody GooglePlayPurchaseVerifyReq req) {
+        Long userId = StpUtil.getLoginIdAsLong();
+        return ResultUtils.success(googlePlayBillingService.verifyPurchase(userId, req));
+    }
+
+    @PostMapping("/rtdn")
+    public BaseResponse<Boolean> handleRtdn(HttpServletRequest request,
+                                            @RequestBody GooglePlayPubSubPushRequest pushRequest) {
+        googlePlayBillingService.handleRtdn(request, pushRequest);
+        return ResultUtils.success(Boolean.TRUE);
+    }
+}

src/main/java/com/yolo/keyborad/controller/ProductsController.java

@@ -11,6 +11,7 @@ import io.swagger.v3.oas.annotations.tags.Tag;
 import jakarta.annotation.Resource;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestHeader;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
@@ -31,14 +32,14 @@ public class ProductsController {
     private KeyboardProductItemsService productItemsService;
 
     @GetMapping("/detail")
-    @Operation(summary = "查询商品明细", description = "根据商品ID或productId查询商品详情")
+    @Operation(summary = "查询商品明细", description = "根据商品ID或productId查询商品详情，通过platform区分平台")
     public BaseResponse<KeyboardProductItemRespVO> getProductDetail(
             @RequestParam(value = "id", required = false) Long id,
-            @RequestParam(value = "productId", required = false) String productId
+            @RequestParam(value = "productId", required = false) String productId) {
-    ) {
         if (id == null && (productId == null || productId.isBlank())) {
             throw new BusinessException(ErrorCode.PARAMS_ERROR, "id 或 productId 至少传一个");
         }
+        // 判断平台：如果是android返回安卓商品，否则默认返回苹果商品
         KeyboardProductItemRespVO result = (id != null)
                 ? productItemsService.getProductDetailById(id)
                 : productItemsService.getProductDetailByProductId(productId);
@@ -47,25 +48,29 @@ public class ProductsController {
 
     @GetMapping("/listByType")
     @Operation(summary = "按类型查询商品列表", description = "根据商品类型查询商品列表，type=all 返回全部")
-    public BaseResponse<List<KeyboardProductItemRespVO>> listByType(@RequestParam("type") String type) {
+    public BaseResponse<List<KeyboardProductItemRespVO>> listByType(
+            @RequestParam("type") String type,
+            @RequestHeader(value = "platform", required = false) String platform) {
         if (type == null || type.isBlank()) {
             throw new BusinessException(ErrorCode.PARAMS_ERROR, "type 不能为空");
         }
-        List<KeyboardProductItemRespVO> result = productItemsService.listProductsByType(type);
+        List<KeyboardProductItemRespVO> result = productItemsService.listProductsByType(type, platform);
         return ResultUtils.success(result);
     }
 
     @GetMapping("/inApp/list")
     @Operation(summary = "查询内购商品列表", description = "查询 type=in-app-purchase 的商品列表")
-    public BaseResponse<List<KeyboardProductItemRespVO>> listInAppPurchases() {
+    public BaseResponse<List<KeyboardProductItemRespVO>> listInAppPurchases(
-        List<KeyboardProductItemRespVO> result = productItemsService.listProductsByType("in-app-purchase");
+            @RequestHeader(value = "platform", required = false) String platform) {
+        List<KeyboardProductItemRespVO> result = productItemsService.listProductsByType("in-app-purchase", platform);
         return ResultUtils.success(result);
     }
 
     @GetMapping("/subscription/list")
     @Operation(summary = "查询订阅商品列表", description = "查询 type=subscription 的商品列表")
-    public BaseResponse<List<KeyboardProductItemRespVO>> listSubscriptions() {
+    public BaseResponse<List<KeyboardProductItemRespVO>> listSubscriptions(
-        List<KeyboardProductItemRespVO> result = productItemsService.listProductsByType("subscription");
+            @RequestHeader(value = "platform", required = false) String platform) {
+        List<KeyboardProductItemRespVO> result = productItemsService.listProductsByType("subscription", platform);
         return ResultUtils.success(result);
     }
 }

src/main/java/com/yolo/keyborad/googleplay/GooglePlayApiClient.java

@@ -0,0 +1,307 @@
+package com.yolo.keyborad.googleplay;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.yolo.keyborad.config.GooglePlayProperties;
+import com.yolo.keyborad.googleplay.model.GooglePlayPurchaseSnapshot;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Component;
+
+import java.net.URI;
+import java.net.URLEncoder;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.nio.charset.StandardCharsets;
+import java.time.Instant;
+import java.util.Date;
+
+@Slf4j
+@Component
+@RequiredArgsConstructor
+public class GooglePlayApiClient {
+
+    private static final String API_BASE = "https://androidpublisher.googleapis.com/androidpublisher/v3/applications";
+    private static final int MAX_RETRY = 3;
+    private static final long RETRY_INTERVAL_MILLIS = 300L;
+
+    private final GooglePlayServiceAccountTokenProvider tokenProvider;
+    private final HttpClient googlePlayHttpClient;
+    private final ObjectMapper objectMapper;
+    private final GooglePlayProperties properties;
+
+    public GooglePlayPurchaseSnapshot getSubscription(String packageName, String purchaseToken) {
+        String url = API_BASE + "/" + encode(packageName) + "/purchases/subscriptionsv2/tokens/" + encode(purchaseToken);
+        JsonNode jsonNode = executeJson("GET_SUBSCRIPTION", url, null, true);
+        return mapSubscriptionSnapshot(packageName, purchaseToken, jsonNode);
+    }
+
+    public GooglePlayPurchaseSnapshot getOneTimeProduct(String packageName, String purchaseToken) {
+        String url = API_BASE + "/" + encode(packageName) + "/purchases/productsv2/tokens/" + encode(purchaseToken);
+        JsonNode jsonNode = executeJson("GET_ONE_TIME", url, null, true);
+        return mapOneTimeSnapshot(packageName, purchaseToken, jsonNode);
+    }
+
+    public void acknowledgeSubscription(String packageName, String productId, String purchaseToken) {
+        String url = API_BASE + "/" + encode(packageName) + "/purchases/subscriptions/"
+                + encode(productId) + "/tokens/" + encode(purchaseToken) + ":acknowledge";
+        executeJson("ACK_SUBSCRIPTION", url, "{}", true);
+    }
+
+    public void acknowledgeProduct(String packageName, String productId, String purchaseToken) {
+        String url = API_BASE + "/" + encode(packageName) + "/purchases/products/"
+                + encode(productId) + "/tokens/" + encode(purchaseToken) + ":acknowledge";
+        executeJson("ACK_PRODUCT", url, "{}", true);
+    }
+
+    public void consumeProduct(String packageName, String productId, String purchaseToken) {
+        String url = API_BASE + "/" + encode(packageName) + "/purchases/products/"
+                + encode(productId) + "/tokens/" + encode(purchaseToken) + ":consume";
+        executeJson("CONSUME_PRODUCT", url, "{}", true);
+    }
+
+    public JsonNode verifyPubSubJwt(String bearerToken) {
+        String url = properties.getPubsubTokenInfoUri() + "?id_token=" + encode(bearerToken);
+        return executeJson("VERIFY_PUBSUB_JWT", url, null, false);
+    }
+
+    private JsonNode executeJson(String operation, String url, String body, boolean withAuthorization) {
+        for (int attempt = 1; attempt <= MAX_RETRY; attempt++) {
+            try {
+                HttpRequest request = buildRequest(url, body, withAuthorization);
+                HttpResponse<String> response = googlePlayHttpClient.send(request, HttpResponse.BodyHandlers.ofString());
+                if (response.statusCode() / 100 != 2) {
+                    throw new GooglePlayApiException(response.statusCode(), response.body());
+                }
+                String responseBody = response.body();
+                return responseBody == null || responseBody.isBlank()
+                        ? objectMapper.createObjectNode()
+                        : objectMapper.readTree(responseBody);
+            } catch (GooglePlayApiException e) {
+                if (attempt == MAX_RETRY || e.getStatusCode() == 404) {
+                    throw e;
+                }
+                sleep(attempt, operation, e);
+            } catch (Exception e) {
+                if (attempt == MAX_RETRY) {
+                    throw new GooglePlayApiException("Google Play 请求失败: " + operation, e);
+                }
+                sleep(attempt, operation, e);
+            }
+        }
+        throw new IllegalStateException("unreachable");
+    }
+
+    private HttpRequest buildRequest(String url, String body, boolean withAuthorization) {
+        HttpRequest.Builder builder = HttpRequest.newBuilder(URI.create(url))
+                .header("Accept", "application/json");
+        if (withAuthorization) {
+            builder.header("Authorization", "Bearer " + tokenProvider.getAccessToken());
+        }
+        if (body == null) {
+            return builder.GET().build();
+        }
+        return builder.header("Content-Type", "application/json")
+                .POST(HttpRequest.BodyPublishers.ofString(body))
+                .build();
+    }
+
+    private GooglePlayPurchaseSnapshot mapSubscriptionSnapshot(String packageName, String purchaseToken, JsonNode root) {
+        JsonNode lineItem = firstLineItem(root);
+        String state = mapSubscriptionState(text(root, "subscriptionState"));
+        String googleOrderId = firstNonBlank(text(lineItem, "latestSuccessfulOrderId"), text(root, "latestOrderId"));
+        return GooglePlayPurchaseSnapshot.builder()
+                .packageName(packageName)
+                .productId(text(lineItem, "productId"))
+                .productType(GooglePlayConstants.PRODUCT_TYPE_SUBSCRIPTION)
+                .basePlanId(text(lineItem.path("offerDetails"), "basePlanId"))
+                .purchaseToken(purchaseToken)
+                .orderKey(resolveOrderKey(googleOrderId, purchaseToken))
+                .googleOrderId(googleOrderId)
+                .linkedPurchaseToken(text(root, "linkedPurchaseToken"))
+                .state(state)
+                .acknowledgementState(mapAcknowledgementState(text(root, "acknowledgementState")))
+                .consumptionState(GooglePlayConstants.CONSUMPTION_NOT_APPLICABLE)
+                .quantity(1)
+                .refundableQuantity(null)
+                .autoRenewEnabled(bool(lineItem.path("autoRenewingPlan"), "autoRenewEnabled"))
+                .accessGranted(isSubscriptionAccessGranted(state))
+                .externalAccountId(text(root.path("externalAccountIdentifiers"), "obfuscatedExternalAccountId"))
+                .externalProfileId(text(root.path("externalAccountIdentifiers"), "obfuscatedExternalProfileId"))
+                .regionCode(text(root, "regionCode"))
+                .canceledStateReason(resolveCanceledReason(root.path("canceledStateContext")))
+                .startTime(parseTime(firstNonBlank(text(root, "startTime"), text(lineItem, "startTime"))))
+                .expiryTime(parseTime(text(lineItem, "expiryTime")))
+                .autoResumeTime(parseTime(text(root.path("pausedStateContext"), "autoResumeTime")))
+                .lastSyncedAt(new Date())
+                .rawResponse(writeJson(root))
+                .build();
+    }
+
+    private GooglePlayPurchaseSnapshot mapOneTimeSnapshot(String packageName, String purchaseToken, JsonNode root) {
+        // 1. 获取 productLineItem 数组的第一个元素 (index 0)
+        JsonNode firstLineItem = root.path("productLineItem").path(0);
+        // 2. 获取嵌套的 productOfferDetails 对象
+        JsonNode offerDetails = firstLineItem.path("productOfferDetails");
+
+        String state = mapOneTimeState(text(root.path("purchaseStateContext"), "purchaseState"));
+        String purchaseOptionId = text(offerDetails, "purchaseOptionId");
+        // 修正：一次性购买的订单号字段名为 "orderId"
+        String googleOrderId = text(root, "orderId");
+
+        return GooglePlayPurchaseSnapshot.builder()
+                .packageName(packageName)
+                // 修正：从第一个元素中获取 productId
+                .productId(text(firstLineItem, "productId"))
+                .productType(GooglePlayConstants.PRODUCT_TYPE_ONE_TIME)
+                .purchaseToken(purchaseToken)
+                .purchaseOptionId(purchaseOptionId)
+                .orderKey(resolveOrderKey(googleOrderId, purchaseToken))
+                .googleOrderId(googleOrderId)
+                .linkedPurchaseToken(null)
+                .state(state)
+                .acknowledgementState(mapAcknowledgementState(text(root, "acknowledgementState")))
+                // 修正：从 productOfferDetails 中获取以下字段
+                .consumptionState(mapConsumptionState(text(offerDetails, "consumptionState")))
+                .quantity(number(offerDetails, "quantity"))
+                .refundableQuantity(number(offerDetails, "refundableQuantity"))
+                .autoRenewEnabled(false)
+                .accessGranted(GooglePlayConstants.STATE_ACTIVE.equals(state))
+                .externalAccountId(text(root.path("externalAccountIdentifiers"), "obfuscatedExternalAccountId"))
+                .externalProfileId(text(root.path("externalAccountIdentifiers"), "obfuscatedExternalProfileId"))
+                .regionCode(text(root, "regionCode"))
+                .canceledStateReason(null)
+                .startTime(parseTime(text(root, "purchaseCompletionTime")))
+                .expiryTime(null)
+                .autoResumeTime(null)
+                .lastSyncedAt(new Date())
+                .rawResponse(writeJson(root))
+                .build();
+    }
+
+    private JsonNode firstLineItem(JsonNode root) {
+        JsonNode lineItems = root.path("lineItems");
+        return lineItems.isArray() && !lineItems.isEmpty() ? lineItems.get(0) : objectMapper.createObjectNode();
+    }
+
+    private String resolveOrderKey(String googleOrderId, String purchaseToken) {
+        return firstNonBlank(googleOrderId, "TOKEN:" + purchaseToken);
+    }
+
+    private String resolveCanceledReason(JsonNode node) {
+        if (node == null || node.isMissingNode()) {
+            return null;
+        }
+        if (node.hasNonNull("userInitiatedCancellation")) {
+            return "USER";
+        }
+        if (node.hasNonNull("systemInitiatedCancellation")) {
+            return "SYSTEM";
+        }
+        if (node.hasNonNull("developerInitiatedCancellation")) {
+            return "DEVELOPER";
+        }
+        if (node.hasNonNull("replacementCancellation")) {
+            return "REPLACEMENT";
+        }
+        return null;
+    }
+
+    private String mapSubscriptionState(String state) {
+        return switch (state) {
+            case "SUBSCRIPTION_STATE_ACTIVE" -> GooglePlayConstants.STATE_ACTIVE;
+            case "SUBSCRIPTION_STATE_CANCELED" -> GooglePlayConstants.STATE_CANCELED;
+            case "SUBSCRIPTION_STATE_IN_GRACE_PERIOD" -> GooglePlayConstants.STATE_IN_GRACE_PERIOD;
+            case "SUBSCRIPTION_STATE_ON_HOLD" -> GooglePlayConstants.STATE_ON_HOLD;
+            case "SUBSCRIPTION_STATE_PAUSED" -> GooglePlayConstants.STATE_PAUSED;
+            case "SUBSCRIPTION_STATE_EXPIRED" -> GooglePlayConstants.STATE_EXPIRED;
+            case "SUBSCRIPTION_STATE_PENDING" -> GooglePlayConstants.STATE_PENDING;
+            case "SUBSCRIPTION_STATE_PENDING_PURCHASE_CANCELED" -> GooglePlayConstants.STATE_PENDING_PURCHASE_CANCELED;
+            default -> GooglePlayConstants.STATE_UNKNOWN;
+        };
+    }
+
+    private boolean isSubscriptionAccessGranted(String state) {
+        return GooglePlayConstants.STATE_ACTIVE.equals(state)
+                || GooglePlayConstants.STATE_CANCELED.equals(state)
+                || GooglePlayConstants.STATE_IN_GRACE_PERIOD.equals(state);
+    }
+
+    private String mapOneTimeState(String state) {
+        if (state == null) {
+            return GooglePlayConstants.STATE_UNKNOWN;
+        }
+        return switch (state) {
+            // productsv2 API 返回短枚举名
+            case "PURCHASED", "PURCHASE_STATE_PURCHASED" -> GooglePlayConstants.STATE_ACTIVE;
+            case "PENDING", "PURCHASE_STATE_PENDING" -> GooglePlayConstants.STATE_PENDING;
+            case "CANCELLED", "PURCHASE_STATE_CANCELLED" -> GooglePlayConstants.STATE_CANCELED;
+            default -> GooglePlayConstants.STATE_UNKNOWN;
+        };
+    }
+
+    private String mapAcknowledgementState(String state) {
+        return "ACKNOWLEDGEMENT_STATE_ACKNOWLEDGED".equals(state)
+                ? GooglePlayConstants.ACK_ACKNOWLEDGED
+                : GooglePlayConstants.ACK_PENDING;
+    }
+
+    private String mapConsumptionState(String state) {
+        if ("CONSUMPTION_STATE_CONSUMED".equals(state)) {
+            return GooglePlayConstants.CONSUMPTION_CONSUMED;
+        }
+        if ("CONSUMPTION_STATE_NO_NEED_TO_CONSUME".equals(state)) {
+            return GooglePlayConstants.CONSUMPTION_NOT_APPLICABLE;
+        }
+        return GooglePlayConstants.CONSUMPTION_PENDING;
+    }
+
+    private String text(JsonNode node, String field) {
+        JsonNode child = node == null ? null : node.get(field);
+        return child == null || child.isNull() ? null : child.asText();
+    }
+
+    private Boolean bool(JsonNode node, String field) {
+        JsonNode child = node == null ? null : node.get(field);
+        return child == null || child.isNull() ? null : child.asBoolean();
+    }
+
+    private Integer number(JsonNode node, String field) {
+        JsonNode child = node == null ? null : node.get(field);
+        return child == null || child.isNull() ? null : child.asInt();
+    }
+
+    private Date parseTime(String value) {
+        if (value == null || value.isBlank()) {
+            return null;
+        }
+        return Date.from(Instant.parse(value));
+    }
+
+    private String firstNonBlank(String first, String second) {
+        return first != null && !first.isBlank() ? first : second;
+    }
+
+    private String encode(String raw) {
+        return URLEncoder.encode(raw, StandardCharsets.UTF_8);
+    }
+
+    private String writeJson(JsonNode jsonNode) {
+        try {
+            return objectMapper.writeValueAsString(jsonNode);
+        } catch (Exception e) {
+            return "{}";
+        }
+    }
+
+    private void sleep(int attempt, String operation, Exception e) {
+        log.warn("Google Play API retry, operation={}, attempt={}", operation, attempt, e);
+        try {
+            Thread.sleep(RETRY_INTERVAL_MILLIS * attempt);
+        } catch (InterruptedException interruptedException) {
+            Thread.currentThread().interrupt();
+            throw new GooglePlayApiException("Google Play 请求被中断", interruptedException);
+        }
+    }
+}

src/main/java/com/yolo/keyborad/googleplay/GooglePlayApiException.java

@@ -0,0 +1,23 @@
+package com.yolo.keyborad.googleplay;
+
+import lombok.Getter;
+
+@Getter
+public class GooglePlayApiException extends RuntimeException {
+
+    private final int statusCode;
+
+    private final String responseBody;
+
+    public GooglePlayApiException(int statusCode, String responseBody) {
+        super("Google Play API request failed, status=" + statusCode);
+        this.statusCode = statusCode;
+        this.responseBody = responseBody;
+    }
+
+    public GooglePlayApiException(String message, Throwable cause) {
+        super(message, cause);
+        this.statusCode = -1;
+        this.responseBody = null;
+    }
+}

src/main/java/com/yolo/keyborad/googleplay/GooglePlayConstants.java

@@ -0,0 +1,53 @@
+package com.yolo.keyborad.googleplay;
+
+public final class GooglePlayConstants {
+
+    public static final String PRODUCT_TYPE_SUBSCRIPTION = "SUBSCRIPTION";
+    public static final String PRODUCT_TYPE_ONE_TIME = "ONE_TIME";
+
+    public static final String STATE_PENDING = "PENDING";
+    public static final String STATE_ACTIVE = "ACTIVE";
+    public static final String STATE_CANCELED = "CANCELED";
+    public static final String STATE_IN_GRACE_PERIOD = "IN_GRACE_PERIOD";
+    public static final String STATE_ON_HOLD = "ON_HOLD";
+    public static final String STATE_PAUSED = "PAUSED";
+    public static final String STATE_EXPIRED = "EXPIRED";
+    public static final String STATE_REVOKED = "REVOKED";
+    public static final String STATE_REFUNDED = "REFUNDED";
+    public static final String STATE_PENDING_PURCHASE_CANCELED = "PENDING_PURCHASE_CANCELED";
+    public static final String STATE_UNKNOWN = "UNKNOWN";
+
+    public static final String ACK_PENDING = "PENDING";
+    public static final String ACK_ACKNOWLEDGED = "ACKNOWLEDGED";
+
+    public static final String CONSUMPTION_PENDING = "PENDING";
+    public static final String CONSUMPTION_CONSUMED = "CONSUMED";
+    public static final String CONSUMPTION_NOT_APPLICABLE = "NOT_APPLICABLE";
+
+    public static final String DELIVERY_PENDING = "PENDING";
+    public static final String DELIVERY_PROCESSING = "PROCESSING";
+    public static final String DELIVERY_DELIVERED = "DELIVERED";
+    public static final String DELIVERY_REVOKED = "REVOKED";
+    public static final String DELIVERY_NOT_REQUIRED = "NOT_REQUIRED";
+    public static final String DELIVERY_MANUAL_REVIEW = "MANUAL_REVIEW";
+
+    public static final String ENTITLEMENT_VIP_SUBSCRIPTION = "VIP_SUBSCRIPTION";
+    public static final String ENTITLEMENT_VIP_ONE_TIME = "VIP_ONE_TIME";
+    public static final String ENTITLEMENT_WALLET_TOP_UP = "WALLET_TOP_UP";
+    public static final String ENTITLEMENT_NON_CONSUMABLE = "NON_CONSUMABLE";
+
+    public static final String EVENT_RECEIVED = "RECEIVED";
+    public static final String EVENT_PROCESSED = "PROCESSED";
+    public static final String EVENT_FAILED = "FAILED";
+    public static final String EVENT_IGNORED = "IGNORED";
+
+    public static final String EVENT_TYPE_SUBSCRIPTION = "SUBSCRIPTION";
+    public static final String EVENT_TYPE_ONE_TIME = "ONE_TIME";
+    public static final String EVENT_TYPE_VOIDED = "VOIDED";
+    public static final String EVENT_TYPE_TEST = "TEST";
+
+    public static final String PAYMENT_METHOD_GOOGLE_PLAY = "GOOGLE_PLAY";
+
+    private GooglePlayConstants() {
+    }
+}

src/main/java/com/yolo/keyborad/googleplay/GooglePlayEntitlementApplier.java

@@ -0,0 +1,305 @@
+package com.yolo.keyborad.googleplay;
+
+import com.yolo.keyborad.common.ErrorCode;
+import com.yolo.keyborad.exception.BusinessException;
+import com.yolo.keyborad.googleplay.model.GooglePlayPurchaseSnapshot;
+import com.yolo.keyborad.mapper.GooglePlayUserEntitlementMapper;
+import com.yolo.keyborad.model.entity.KeyboardProductItems;
+import com.yolo.keyborad.model.entity.googleplay.GooglePlayOrder;
+import com.yolo.keyborad.model.entity.googleplay.GooglePlayUserEntitlement;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Component;
+
+import java.math.BigDecimal;
+import java.util.Date;
+
+@Slf4j
+@Component
+@RequiredArgsConstructor
+public class GooglePlayEntitlementApplier {
+
+    private final GooglePlayUserEntitlementMapper entitlementMapper;
+    private final GooglePlayVipBenefitService vipBenefitService;
+    private final GooglePlayWalletBenefitService walletBenefitService;
+    private final GooglePlayOrderDeliveryGuard orderDeliveryGuard;
+
+    public GooglePlayUserEntitlement apply(Long userId,
+                                           KeyboardProductItems product,
+                                           GooglePlayPurchaseSnapshot snapshot,
+                                           GooglePlayOrder order) {
+        String benefitType = resolveBenefitType(product, snapshot);
+        String entitlementKey = resolveEntitlementKey(benefitType, product.getProductId());
+        boolean grantOwned = orderDeliveryGuard.prepareGrant(benefitType, snapshot, order);
+        GooglePlayUserEntitlement entitlement = loadEntitlement(snapshot.getPurchaseToken(), entitlementKey);
+        if (entitlement == null) {
+            entitlement = new GooglePlayUserEntitlement();
+            entitlement.setCreatedAt(new Date());
+        }
+        fillCommonFields(entitlement, userId, product, snapshot, order, benefitType, entitlementKey);
+        switch (benefitType) {
+            case GooglePlayConstants.ENTITLEMENT_VIP_SUBSCRIPTION -> applySubscriptionVip(userId, product, snapshot, order, entitlement);
+            case GooglePlayConstants.ENTITLEMENT_VIP_ONE_TIME ->
+                    applyOneTimeVip(userId, product, snapshot, order, entitlement, grantOwned);
+            case GooglePlayConstants.ENTITLEMENT_WALLET_TOP_UP ->
+                    applyWalletTopUp(userId, product, snapshot, order, entitlement, grantOwned);
+            default -> applyNonConsumable(snapshot, order, entitlement, grantOwned);
+        }
+        saveEntitlement(entitlement);
+        return entitlement;
+    }
+
+    private void fillCommonFields(GooglePlayUserEntitlement entitlement,
+                                  Long userId,
+                                  KeyboardProductItems product,
+                                  GooglePlayPurchaseSnapshot snapshot,
+                                  GooglePlayOrder order,
+                                  String benefitType,
+                                  String entitlementKey) {
+        Date now = new Date();
+        entitlement.setUserId(userId);
+        entitlement.setEntitlementKey(entitlementKey);
+        entitlement.setProductId(product.getProductId());
+        entitlement.setProductType(snapshot.getProductType());
+        entitlement.setSourcePurchaseToken(snapshot.getPurchaseToken());
+        entitlement.setCurrentOrderKey(order.getOrderKey());
+        entitlement.setBenefitType(benefitType);
+        entitlement.setState(snapshot.getState());
+        entitlement.setUpdatedAt(now);
+        if (entitlement.getQuantity() == null) {
+            entitlement.setQuantity(BigDecimal.ZERO);
+        }
+    }
+
+    private void applySubscriptionVip(Long userId,
+                                      KeyboardProductItems product,
+                                      GooglePlayPurchaseSnapshot snapshot,
+                                      GooglePlayOrder order,
+                                      GooglePlayUserEntitlement entitlement) {
+        Date expiryTime = snapshot.getExpiryTime();
+        if (snapshot.getAccessGranted() && expiryTime == null) {
+            throw new BusinessException(ErrorCode.GOOGLE_PLAY_STATE_INVALID, "订阅缺少 expiryTime");
+        }
+        entitlement.setActive(Boolean.TRUE.equals(snapshot.getAccessGranted()));
+        entitlement.setStartTime(snapshot.getStartTime());
+        entitlement.setEndTime(expiryTime);
+        order.setDeliveryStatus(GooglePlayConstants.DELIVERY_NOT_REQUIRED);
+        order.setGrantedQuantity(BigDecimal.ZERO);
+        if (Boolean.TRUE.equals(snapshot.getAccessGranted())) {
+            entitlement.setLastGrantedAt(new Date());
+            vipBenefitService.activate(userId, product, expiryTime);
+            return;
+        }
+        entitlement.setLastRevokedAt(new Date());
+        vipBenefitService.deactivate(userId, expiryTime);
+    }
+
+    private void applyOneTimeVip(Long userId,
+                                 KeyboardProductItems product,
+                                 GooglePlayPurchaseSnapshot snapshot,
+                                 GooglePlayOrder order,
+                                 GooglePlayUserEntitlement entitlement,
+                                 boolean grantOwned) {
+        if (GooglePlayConstants.STATE_ACTIVE.equals(snapshot.getState())) {
+            grantOneTimeVip(userId, product, order, entitlement, grantOwned);
+            return;
+        }
+        revokeVipEntitlement(userId, order, entitlement);
+    }
+
+    private void applyWalletTopUp(Long userId,
+                                  KeyboardProductItems product,
+                                  GooglePlayPurchaseSnapshot snapshot,
+                                  GooglePlayOrder order,
+                                  GooglePlayUserEntitlement entitlement,
+                                  boolean grantOwned) {
+        BigDecimal amount = resolveWalletAmount(product);
+        if (amount.compareTo(BigDecimal.ZERO) <= 0) {
+            throw new BusinessException(ErrorCode.PRODUCT_QUOTA_NOT_SET);
+        }
+        if (GooglePlayConstants.STATE_ACTIVE.equals(snapshot.getState())) {
+            grantWalletTopUp(userId, product, order, entitlement, amount, grantOwned);
+            return;
+        }
+        revokeWalletTopUp(userId, order, entitlement, amount);
+    }
+
+    private void applyNonConsumable(GooglePlayPurchaseSnapshot snapshot,
+                                    GooglePlayOrder order,
+                                    GooglePlayUserEntitlement entitlement,
+                                    boolean grantOwned) {
+        boolean active = GooglePlayConstants.STATE_ACTIVE.equals(snapshot.getState())
+                || GooglePlayConstants.STATE_CANCELED.equals(snapshot.getState());
+        if (!grantOwned && active) {
+            entitlement.setActive(GooglePlayConstants.DELIVERY_DELIVERED.equals(order.getDeliveryStatus()));
+            return;
+        }
+        entitlement.setActive(active);
+        entitlement.setStartTime(snapshot.getStartTime());
+        entitlement.setEndTime(snapshot.getExpiryTime());
+        entitlement.setQuantity(BigDecimal.ONE);
+        order.setGrantedQuantity(BigDecimal.ONE);
+        order.setDeliveryStatus(active ? GooglePlayConstants.DELIVERY_DELIVERED : GooglePlayConstants.DELIVERY_REVOKED);
+        if (active) {
+            entitlement.setLastGrantedAt(new Date());
+            return;
+        }
+        entitlement.setLastRevokedAt(new Date());
+    }
+
+    private void grantOneTimeVip(Long userId,
+                                 KeyboardProductItems product,
+                                 GooglePlayOrder order,
+                                 GooglePlayUserEntitlement entitlement,
+                                 boolean grantOwned) {
+        if (!grantOwned || GooglePlayConstants.DELIVERY_DELIVERED.equals(order.getDeliveryStatus())) {
+            entitlement.setActive(GooglePlayConstants.DELIVERY_DELIVERED.equals(order.getDeliveryStatus()));
+            return;
+        }
+        Date expiry = resolveOneTimeVipExpiry(product);
+        vipBenefitService.activate(userId, product, expiry);
+        entitlement.setActive(true);
+        entitlement.setQuantity(BigDecimal.ONE);
+        entitlement.setStartTime(new Date());
+        entitlement.setEndTime(expiry);
+        entitlement.setLastGrantedAt(new Date());
+        order.setDeliveryStatus(GooglePlayConstants.DELIVERY_DELIVERED);
+        order.setGrantedQuantity(BigDecimal.ONE);
+    }
+
+    private void revokeVipEntitlement(Long userId,
+                                      GooglePlayOrder order,
+                                      GooglePlayUserEntitlement entitlement) {
+        entitlement.setActive(false);
+        entitlement.setLastRevokedAt(new Date());
+        if (!GooglePlayConstants.DELIVERY_DELIVERED.equals(order.getDeliveryStatus())) {
+            order.setDeliveryStatus(GooglePlayConstants.DELIVERY_REVOKED);
+            return;
+        }
+        vipBenefitService.deactivate(userId, entitlement.getEndTime());
+        order.setDeliveryStatus(GooglePlayConstants.DELIVERY_REVOKED);
+    }
+
+    private void grantWalletTopUp(Long userId,
+                                  KeyboardProductItems product,
+                                  GooglePlayOrder order,
+                                  GooglePlayUserEntitlement entitlement,
+                                  BigDecimal amount,
+                                  boolean grantOwned) {
+        if (!grantOwned || GooglePlayConstants.DELIVERY_DELIVERED.equals(order.getDeliveryStatus())) {
+            entitlement.setActive(GooglePlayConstants.DELIVERY_DELIVERED.equals(order.getDeliveryStatus()));
+            return;
+        }
+        walletBenefitService.grant(userId, order.getId(), product.getName(), amount);
+        entitlement.setActive(true);
+        entitlement.setQuantity(amount);
+        entitlement.setStartTime(new Date());
+        entitlement.setLastGrantedAt(new Date());
+        order.setDeliveryStatus(GooglePlayConstants.DELIVERY_DELIVERED);
+        order.setGrantedQuantity(amount);
+    }
+
+    private void revokeWalletTopUp(Long userId,
+                                   GooglePlayOrder order,
+                                   GooglePlayUserEntitlement entitlement,
+                                   BigDecimal amount) {
+        entitlement.setActive(false);
+        entitlement.setLastRevokedAt(new Date());
+        if (!GooglePlayConstants.DELIVERY_DELIVERED.equals(order.getDeliveryStatus())) {
+            order.setDeliveryStatus(GooglePlayConstants.DELIVERY_REVOKED);
+            return;
+        }
+        boolean revoked = walletBenefitService.revoke(userId, order.getId(), amount);
+        if (!revoked) {
+            order.setDeliveryStatus(GooglePlayConstants.DELIVERY_MANUAL_REVIEW);
+            return;
+        }
+        order.setDeliveryStatus(GooglePlayConstants.DELIVERY_REVOKED);
+    }
+
+    private Date resolveOneTimeVipExpiry(KeyboardProductItems product) {
+        if (product.getDurationDays() == null || product.getDurationDays() <= 0) {
+            return null;
+        }
+        long millis = (long) product.getDurationDays() * 24 * 60 * 60 * 1000;
+        return new Date(System.currentTimeMillis() + millis);
+    }
+
+    private String resolveBenefitType(KeyboardProductItems product, GooglePlayPurchaseSnapshot snapshot) {
+        if (GooglePlayConstants.PRODUCT_TYPE_SUBSCRIPTION.equals(snapshot.getProductType())) {
+            return GooglePlayConstants.ENTITLEMENT_VIP_SUBSCRIPTION;
+        }
+        if (looksLikeVipProduct(product)) {
+            return GooglePlayConstants.ENTITLEMENT_VIP_ONE_TIME;
+        }
+        if (looksLikeWalletProduct(product)) {
+            return GooglePlayConstants.ENTITLEMENT_WALLET_TOP_UP;
+        }
+        return GooglePlayConstants.ENTITLEMENT_NON_CONSUMABLE;
+    }
+
+    private boolean looksLikeVipProduct(KeyboardProductItems product) {
+        String unit = product.getUnit() == null ? "" : product.getUnit().toLowerCase();
+        return product.getDurationDays() != null && product.getDurationDays() > 0
+                || unit.contains("vip")
+                || unit.contains("member")
+                || unit.contains("会员");
+    }
+
+    private boolean looksLikeWalletProduct(KeyboardProductItems product) {
+        String unit = product.getUnit() == null ? "" : product.getUnit().toLowerCase();
+        return unit.contains("coin")
+                || unit.contains("quota")
+                || unit.contains("credit")
+                || unit.contains("金币")
+                || unit.contains("次数")
+                || resolveWalletAmount(product).compareTo(BigDecimal.ZERO) > 0;
+    }
+
+    private BigDecimal resolveWalletAmount(KeyboardProductItems product) {
+        BigDecimal fromName = parseNumber(product.getName());
+        if (fromName != null) {
+            return fromName;
+        }
+        if (product.getDurationValue() != null) {
+            return BigDecimal.valueOf(product.getDurationValue());
+        }
+        return BigDecimal.ZERO;
+    }
+
+    private BigDecimal parseNumber(String raw) {
+        if (raw == null || raw.isBlank()) {
+            return null;
+        }
+        try {
+            return new BigDecimal(raw.replaceAll("[^\\d.]", ""));
+        } catch (Exception e) {
+            return null;
+        }
+    }
+
+    private String resolveEntitlementKey(String benefitType, String productId) {
+        if (GooglePlayConstants.ENTITLEMENT_NON_CONSUMABLE.equals(benefitType)) {
+            return "PRODUCT:" + productId;
+        }
+        if (GooglePlayConstants.ENTITLEMENT_WALLET_TOP_UP.equals(benefitType)) {
+            return "WALLET";
+        }
+        return "VIP";
+    }
+
+    private GooglePlayUserEntitlement loadEntitlement(String purchaseToken, String entitlementKey) {
+        return entitlementMapper.selectOne(com.baomidou.mybatisplus.core.toolkit.Wrappers.<GooglePlayUserEntitlement>lambdaQuery()
+                .eq(GooglePlayUserEntitlement::getSourcePurchaseToken, purchaseToken)
+                .eq(GooglePlayUserEntitlement::getEntitlementKey, entitlementKey)
+                .last("LIMIT 1"));
+    }
+
+    private void saveEntitlement(GooglePlayUserEntitlement entitlement) {
+        if (entitlement.getId() == null) {
+            entitlementMapper.insert(entitlement);
+            return;
+        }
+        entitlementMapper.updateById(entitlement);
+    }
+}

src/main/java/com/yolo/keyborad/googleplay/GooglePlayNotificationSupport.java

@@ -0,0 +1,191 @@
+package com.yolo.keyborad.googleplay;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.yolo.keyborad.common.ErrorCode;
+import com.yolo.keyborad.exception.BusinessException;
+import com.yolo.keyborad.googleplay.model.GooglePlaySyncCommand;
+import com.yolo.keyborad.model.dto.googleplay.GooglePlayPubSubPushRequest;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Component;
+
+import java.util.Base64;
+import java.util.Date;
+
+@Component
+@RequiredArgsConstructor
+public class GooglePlayNotificationSupport {
+
+    private static final int VOIDED_PRODUCT_TYPE_SUBSCRIPTION = 1;
+
+    private final ObjectMapper objectMapper;
+
+    public GooglePlayPubSubPushRequest.DeveloperNotification decode(GooglePlayPubSubPushRequest pushRequest) {
+        try {
+            byte[] decoded = Base64.getDecoder().decode(pushRequest.getMessage().getData());
+            return objectMapper.readValue(decoded, GooglePlayPubSubPushRequest.DeveloperNotification.class);
+        } catch (Exception e) {
+            throw new BusinessException(ErrorCode.GOOGLE_PLAY_RTDN_PAYLOAD_INVALID, "RTDN payload 解析失败");
+        }
+    }
+
+    public GooglePlaySyncCommand buildCommand(GooglePlayPubSubPushRequest pushRequest,
+                                              GooglePlayPubSubPushRequest.DeveloperNotification notification,
+                                              String packageName) {
+        if (notification.getSubscriptionNotification() != null) {
+            return buildSubscriptionCommand(pushRequest, notification, packageName);
+        }
+        if (notification.getOneTimeProductNotification() != null) {
+            return buildOneTimeCommand(pushRequest, notification, packageName);
+        }
+        return buildVoidedCommand(pushRequest, notification, packageName);
+    }
+
+    public String resolveEventType(GooglePlayPubSubPushRequest.DeveloperNotification notification) {
+        if (notification.getSubscriptionNotification() != null) {
+            return GooglePlayConstants.EVENT_TYPE_SUBSCRIPTION;
+        }
+        if (notification.getOneTimeProductNotification() != null) {
+            return GooglePlayConstants.EVENT_TYPE_ONE_TIME;
+        }
+        if (notification.getVoidedPurchaseNotification() != null) {
+            return GooglePlayConstants.EVENT_TYPE_VOIDED;
+        }
+        return GooglePlayConstants.EVENT_TYPE_TEST;
+    }
+
+    public Integer resolveNotificationType(GooglePlayPubSubPushRequest.DeveloperNotification notification) {
+        if (notification.getSubscriptionNotification() != null) {
+            return notification.getSubscriptionNotification().getNotificationType();
+        }
+        if (notification.getOneTimeProductNotification() != null) {
+            return notification.getOneTimeProductNotification().getNotificationType();
+        }
+        return notification.getVoidedPurchaseNotification() == null ? null : notification.getVoidedPurchaseNotification().getRefundType();
+    }
+
+    public String resolveNotificationName(GooglePlayPubSubPushRequest.DeveloperNotification notification) {
+        if (notification.getSubscriptionNotification() != null) {
+            return resolveSubscriptionName(notification.getSubscriptionNotification().getNotificationType());
+        }
+        if (notification.getOneTimeProductNotification() != null) {
+            return resolveOneTimeName(notification.getOneTimeProductNotification().getNotificationType());
+        }
+        return notification.getVoidedPurchaseNotification() == null ? "TEST_NOTIFICATION" : "VOIDED_PURCHASE";
+    }
+
+    public String resolvePurchaseToken(GooglePlayPubSubPushRequest.DeveloperNotification notification) {
+        if (notification.getSubscriptionNotification() != null) {
+            return notification.getSubscriptionNotification().getPurchaseToken();
+        }
+        if (notification.getOneTimeProductNotification() != null) {
+            return notification.getOneTimeProductNotification().getPurchaseToken();
+        }
+        return notification.getVoidedPurchaseNotification() == null ? null : notification.getVoidedPurchaseNotification().getPurchaseToken();
+    }
+
+    public String resolveProductId(GooglePlayPubSubPushRequest.DeveloperNotification notification) {
+        if (notification.getOneTimeProductNotification() != null) {
+            return notification.getOneTimeProductNotification().getSku();
+        }
+        return null;
+    }
+
+    public String normalizeVoidedProductType(Integer productType) {
+        return VOIDED_PRODUCT_TYPE_SUBSCRIPTION == productType
+                ? GooglePlayConstants.PRODUCT_TYPE_SUBSCRIPTION
+                : GooglePlayConstants.PRODUCT_TYPE_ONE_TIME;
+    }
+
+    public Date resolveEventTime(String eventTimeMillis) {
+        if (eventTimeMillis == null || eventTimeMillis.isBlank()) {
+            return new Date();
+        }
+        return new Date(Long.parseLong(eventTimeMillis));
+    }
+
+    private GooglePlaySyncCommand buildSubscriptionCommand(GooglePlayPubSubPushRequest pushRequest,
+                                                           GooglePlayPubSubPushRequest.DeveloperNotification notification,
+                                                           String packageName) {
+        int type = notification.getSubscriptionNotification().getNotificationType();
+        return GooglePlaySyncCommand.builder()
+                .packageName(packageName)
+                .productType(GooglePlayConstants.PRODUCT_TYPE_SUBSCRIPTION)
+                .purchaseToken(notification.getSubscriptionNotification().getPurchaseToken())
+                .source("RTDN")
+                .eventType(GooglePlayConstants.EVENT_TYPE_SUBSCRIPTION)
+                .notificationType(type)
+                .notificationName(resolveSubscriptionName(type))
+                .messageId(pushRequest.getMessage().getMessageId())
+                .subscriptionName(pushRequest.getSubscription())
+                .eventTime(resolveEventTime(notification.getEventTimeMillis()))
+                .build();
+    }
+
+    private GooglePlaySyncCommand buildOneTimeCommand(GooglePlayPubSubPushRequest pushRequest,
+                                                      GooglePlayPubSubPushRequest.DeveloperNotification notification,
+                                                      String packageName) {
+        int type = notification.getOneTimeProductNotification().getNotificationType();
+        return GooglePlaySyncCommand.builder()
+                .packageName(packageName)
+                .productId(notification.getOneTimeProductNotification().getSku())
+                .productType(GooglePlayConstants.PRODUCT_TYPE_ONE_TIME)
+                .purchaseToken(notification.getOneTimeProductNotification().getPurchaseToken())
+                .source("RTDN")
+                .eventType(GooglePlayConstants.EVENT_TYPE_ONE_TIME)
+                .notificationType(type)
+                .notificationName(resolveOneTimeName(type))
+                .messageId(pushRequest.getMessage().getMessageId())
+                .subscriptionName(pushRequest.getSubscription())
+                .eventTime(resolveEventTime(notification.getEventTimeMillis()))
+                .build();
+    }
+
+    private GooglePlaySyncCommand buildVoidedCommand(GooglePlayPubSubPushRequest pushRequest,
+                                                     GooglePlayPubSubPushRequest.DeveloperNotification notification,
+                                                     String packageName) {
+        GooglePlayPubSubPushRequest.VoidedPurchaseNotification voided = notification.getVoidedPurchaseNotification();
+        return GooglePlaySyncCommand.builder()
+                .packageName(packageName)
+                .productType(normalizeVoidedProductType(voided.getProductType()))
+                .purchaseToken(voided.getPurchaseToken())
+                .source("RTDN")
+                .eventType(GooglePlayConstants.EVENT_TYPE_VOIDED)
+                .notificationType(voided.getRefundType())
+                .notificationName("VOIDED_PURCHASE")
+                .messageId(pushRequest.getMessage().getMessageId())
+                .subscriptionName(pushRequest.getSubscription())
+                .eventTime(resolveEventTime(notification.getEventTimeMillis()))
+                .build();
+    }
+
+    private String resolveSubscriptionName(Integer type) {
+        return switch (type) {
+            case 1 -> "SUBSCRIPTION_RECOVERED";
+            case 2 -> "SUBSCRIPTION_RENEWED";
+            case 3 -> "SUBSCRIPTION_CANCELED";
+            case 4 -> "SUBSCRIPTION_PURCHASED";
+            case 5 -> "SUBSCRIPTION_ON_HOLD";
+            case 6 -> "SUBSCRIPTION_IN_GRACE_PERIOD";
+            case 7 -> "SUBSCRIPTION_RESTARTED";
+            case 9 -> "SUBSCRIPTION_DEFERRED";
+            case 10 -> "SUBSCRIPTION_PAUSED";
+            case 11 -> "SUBSCRIPTION_PAUSE_SCHEDULE_CHANGED";
+            case 12 -> "SUBSCRIPTION_REVOKED";
+            case 13 -> "SUBSCRIPTION_EXPIRED";
+            case 17 -> "SUBSCRIPTION_ITEMS_CHANGED";
+            case 18 -> "SUBSCRIPTION_CANCELLATION_SCHEDULED";
+            case 19 -> "SUBSCRIPTION_PRICE_CHANGE_UPDATED";
+            case 20 -> "SUBSCRIPTION_PENDING_PURCHASE_CANCELED";
+            case 22 -> "SUBSCRIPTION_PRICE_STEP_UP_CONSENT_UPDATED";
+            default -> "SUBSCRIPTION_UNKNOWN";
+        };
+    }
+
+    private String resolveOneTimeName(Integer type) {
+        return switch (type) {
+            case 1 -> "ONE_TIME_PRODUCT_PURCHASED";
+            case 2 -> "ONE_TIME_PRODUCT_CANCELED";
+            default -> "ONE_TIME_UNKNOWN";
+        };
+    }
+}

src/main/java/com/yolo/keyborad/googleplay/GooglePlayOrderDeliveryGuard.java

@@ -0,0 +1,67 @@
+package com.yolo.keyborad.googleplay;
+
+import com.yolo.keyborad.googleplay.model.GooglePlayPurchaseSnapshot;
+import com.yolo.keyborad.mapper.GooglePlayOrderMapper;
+import com.yolo.keyborad.model.entity.googleplay.GooglePlayOrder;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Component;
+
+import java.util.Date;
+
+@Component
+@RequiredArgsConstructor
+public class GooglePlayOrderDeliveryGuard {
+
+    private final GooglePlayOrderMapper orderMapper;
+
+    /**
+     * 一次性商品在真正发权益前先抢占处理资格，避免并发请求重复发货。
+     */
+    public boolean prepareGrant(String benefitType, GooglePlayPurchaseSnapshot snapshot, GooglePlayOrder order) {
+        if (!requiresGrantGuard(benefitType, snapshot) || order.getId() == null) {
+            order.setDeliveryOwnershipGranted(true);
+            return true;
+        }
+        if (GooglePlayConstants.DELIVERY_DELIVERED.equals(order.getDeliveryStatus())) {
+            order.setDeliveryOwnershipGranted(false);
+            return false;
+        }
+        Date now = new Date();
+        int updated = orderMapper.updateDeliveryStatusIfMatch(
+                order.getId(),
+                GooglePlayConstants.DELIVERY_PENDING,
+                GooglePlayConstants.DELIVERY_PROCESSING,
+                now
+        );
+        if (updated == 1) {
+            order.setDeliveryStatus(GooglePlayConstants.DELIVERY_PROCESSING);
+            order.setDeliveryOwnershipGranted(true);
+            order.setUpdatedAt(now);
+            return true;
+        }
+        refreshDeliveryState(order);
+        order.setDeliveryOwnershipGranted(false);
+        return false;
+    }
+
+    private boolean requiresGrantGuard(String benefitType, GooglePlayPurchaseSnapshot snapshot) {
+        if (!GooglePlayConstants.PRODUCT_TYPE_ONE_TIME.equals(snapshot.getProductType())) {
+            return false;
+        }
+        if (GooglePlayConstants.ENTITLEMENT_NON_CONSUMABLE.equals(benefitType)) {
+            return GooglePlayConstants.STATE_ACTIVE.equals(snapshot.getState())
+                    || GooglePlayConstants.STATE_CANCELED.equals(snapshot.getState());
+        }
+        return GooglePlayConstants.STATE_ACTIVE.equals(snapshot.getState());
+    }
+
+    private void refreshDeliveryState(GooglePlayOrder order) {
+        GooglePlayOrder latestOrder = orderMapper.selectById(order.getId());
+        if (latestOrder == null) {
+            return;
+        }
+        order.setDeliveryStatus(latestOrder.getDeliveryStatus());
+        order.setGrantedQuantity(latestOrder.getGrantedQuantity());
+        order.setUpdatedAt(latestOrder.getUpdatedAt());
+    }
+}

src/main/java/com/yolo/keyborad/googleplay/GooglePlayPubSubAuthService.java

@@ -0,0 +1,91 @@
+package com.yolo.keyborad.googleplay;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.yolo.keyborad.common.ErrorCode;
+import com.yolo.keyborad.config.GooglePlayProperties;
+import com.yolo.keyborad.exception.BusinessException;
+import com.yolo.keyborad.model.dto.googleplay.GooglePlayPubSubPushRequest;
+import jakarta.servlet.http.HttpServletRequest;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Component;
+
+@Component
+@RequiredArgsConstructor
+public class GooglePlayPubSubAuthService {
+
+    private final GooglePlayProperties properties;
+    private final GooglePlayApiClient apiClient;
+
+    public void verify(HttpServletRequest request, GooglePlayPubSubPushRequest pushRequest) {
+//        verifyTopic(request);
+        verifySubscription(pushRequest);
+        if (!properties.isValidatePubsubJwt()) {
+            return;
+        }
+        String bearerToken = resolveBearerToken(request);
+        JsonNode tokenInfo = apiClient.verifyPubSubJwt(bearerToken);
+        verifyAudience(tokenInfo);
+        verifyEmail(tokenInfo);
+        verifyIssuer(tokenInfo);
+    }
+
+    private void verifyTopic(HttpServletRequest request) {
+        String expectedTopic = properties.getPubsub().getExpectedTopic();
+        if (expectedTopic == null || expectedTopic.isBlank()) {
+            return;
+        }
+        String currentTopic = request.getHeader("projects/keyboard-490601/topics/keyboard_topic");
+        if (!expectedTopic.equals(currentTopic)) {
+            throw new BusinessException(ErrorCode.GOOGLE_PLAY_WEBHOOK_UNAUTHORIZED, "Pub/Sub topic 不匹配");
+        }
+    }
+
+    private void verifySubscription(GooglePlayPubSubPushRequest pushRequest) {
+        String expectedSubscription = properties.getPubsub().getExpectedSubscription();
+        if (expectedSubscription == null || expectedSubscription.isBlank()) {
+            return;
+        }
+        if (!expectedSubscription.equals(pushRequest.getSubscription())) {
+            throw new BusinessException(ErrorCode.GOOGLE_PLAY_WEBHOOK_UNAUTHORIZED, "Pub/Sub subscription 不匹配");
+        }
+    }
+
+    private String resolveBearerToken(HttpServletRequest request) {
+        String authorization = request.getHeader("Authorization");
+        if (authorization == null || !authorization.startsWith("Bearer ")) {
+            throw new BusinessException(ErrorCode.GOOGLE_PLAY_WEBHOOK_UNAUTHORIZED, "缺少 Pub/Sub Bearer Token");
+        }
+        return authorization.substring("Bearer ".length());
+    }
+
+    private void verifyAudience(JsonNode tokenInfo) {
+        String expectedAudience = properties.getPubsub().getAudience();
+        if (expectedAudience == null || expectedAudience.isBlank()) {
+            return;
+        }
+        if (!expectedAudience.equalsIgnoreCase(tokenInfo.path("aud").asText())) {
+            throw new BusinessException(ErrorCode.GOOGLE_PLAY_WEBHOOK_UNAUTHORIZED, "Pub/Sub audience 不匹配");
+        }
+    }
+
+    private void verifyEmail(JsonNode tokenInfo) {
+        if (!tokenInfo.path("email_verified").asBoolean(false)) {
+            throw new BusinessException(ErrorCode.GOOGLE_PLAY_WEBHOOK_UNAUTHORIZED, "Pub/Sub 邮箱未验证");
+        }
+        String expectedEmail = properties.getPubsub().getServiceAccountEmail();
+        if (expectedEmail == null || expectedEmail.isBlank()) {
+            return;
+        }
+        if (!expectedEmail.equalsIgnoreCase(tokenInfo.path("email").asText())) {
+            throw new BusinessException(ErrorCode.GOOGLE_PLAY_WEBHOOK_UNAUTHORIZED, "Pub/Sub service account 不匹配");
+        }
+    }
+
+    private void verifyIssuer(JsonNode tokenInfo) {
+        String issuer = tokenInfo.path("iss").asText();
+        boolean valid = "https://accounts.google.com".equals(issuer) || "accounts.google.com".equals(issuer);
+        if (!valid) {
+            throw new BusinessException(ErrorCode.GOOGLE_PLAY_WEBHOOK_UNAUTHORIZED, "Pub/Sub issuer 非法");
+        }
+    }
+}

src/main/java/com/yolo/keyborad/googleplay/GooglePlayPurchaseRecordService.java

@@ -0,0 +1,137 @@
+package com.yolo.keyborad.googleplay;
+
+import com.yolo.keyborad.googleplay.model.GooglePlayPurchaseSnapshot;
+import com.yolo.keyborad.model.entity.KeyboardProductItems;
+import com.yolo.keyborad.model.entity.KeyboardUserPurchaseRecords;
+import com.yolo.keyborad.model.entity.googleplay.GooglePlayOrder;
+import com.yolo.keyborad.model.entity.googleplay.GooglePlayUserEntitlement;
+import com.yolo.keyborad.service.KeyboardUserPurchaseRecordsService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Component;
+
+import java.util.Date;
+import java.util.Objects;
+
+@Component
+@RequiredArgsConstructor
+public class GooglePlayPurchaseRecordService {
+
+    private static final String PURCHASE_STATUS_PAID = "PAID";
+
+    private final KeyboardUserPurchaseRecordsService purchaseRecordsService;
+
+    public void recordSuccess(Long userId,
+                              KeyboardProductItems product,
+                              GooglePlayPurchaseSnapshot snapshot,
+                              GooglePlayOrder order,
+                              GooglePlayUserEntitlement entitlement) {
+        if (!shouldRecord(userId, order, entitlement)) {
+            return;
+        }
+        String transactionId = resolveTransactionId(order);
+        if (alreadyRecorded(transactionId)) {
+            return;
+        }
+        purchaseRecordsService.save(buildRecord(userId, product, snapshot, order, transactionId));
+    }
+
+    private boolean shouldRecord(Long userId,
+                                 GooglePlayOrder order,
+                                 GooglePlayUserEntitlement entitlement) {
+        return userId != null
+                && order != null
+                && entitlement != null
+                && Boolean.TRUE.equals(entitlement.getActive())
+                && !GooglePlayConstants.DELIVERY_REVOKED.equals(order.getDeliveryStatus())
+                && !GooglePlayConstants.DELIVERY_MANUAL_REVIEW.equals(order.getDeliveryStatus());
+    }
+
+    private boolean alreadyRecorded(String transactionId) {
+        return purchaseRecordsService.lambdaQuery()
+                .eq(KeyboardUserPurchaseRecords::getTransactionId, transactionId)
+                .eq(KeyboardUserPurchaseRecords::getPaymentMethod, GooglePlayConstants.PAYMENT_METHOD_GOOGLE_PLAY)
+                .exists();
+    }
+
+    private KeyboardUserPurchaseRecords buildRecord(Long userId,
+                                                    KeyboardProductItems product,
+                                                    GooglePlayPurchaseSnapshot snapshot,
+                                                    GooglePlayOrder order,
+                                                    String transactionId) {
+        KeyboardUserPurchaseRecords record = new KeyboardUserPurchaseRecords();
+        record.setUserId(Math.toIntExact(userId));
+        record.setProductId(product.getProductId());
+        record.setPurchaseQuantity(resolvePurchaseQuantity(product, snapshot, order));
+        record.setPrice(product.getPrice());
+        record.setCurrency(product.getCurrency());
+        record.setPurchaseType(resolvePurchaseType(product, snapshot));
+        Date purchaseTime = resolvePurchaseTime(snapshot, order);
+        record.setPurchaseTime(purchaseTime);
+        record.setStatus(PURCHASE_STATUS_PAID);
+        record.setPaymentMethod(GooglePlayConstants.PAYMENT_METHOD_GOOGLE_PLAY);
+        record.setTransactionId(transactionId);
+        record.setOriginalTransactionId(order.getPurchaseToken());
+        record.setProductIds(new String[]{product.getProductId()});
+        record.setPurchaseDate(purchaseTime);
+        record.setExpiresDate(snapshot.getExpiryTime());
+        return record;
+    }
+
+    private Integer resolvePurchaseQuantity(KeyboardProductItems product,
+                                            GooglePlayPurchaseSnapshot snapshot,
+                                            GooglePlayOrder order) {
+        Integer configured = product.getDurationValue();
+        if (configured != null) {
+            return configured;
+        }
+        Integer parsed = parseInteger(product.getName());
+        if (parsed != null) {
+            return parsed;
+        }
+        if (snapshot.getQuantity() != null) {
+            return snapshot.getQuantity();
+        }
+        return Objects.requireNonNullElse(order.getQuantity(), 1);
+    }
+
+    private Integer parseInteger(String raw) {
+        if (raw == null || raw.isBlank()) {
+            return null;
+        }
+        String digits = raw.replaceAll("[^\\d]", "");
+        if (digits.isBlank()) {
+            return null;
+        }
+        return Integer.parseInt(digits);
+    }
+
+    private String resolvePurchaseType(KeyboardProductItems product, GooglePlayPurchaseSnapshot snapshot) {
+        if (product.getType() != null && !product.getType().isBlank()) {
+            return product.getType();
+        }
+        if (GooglePlayConstants.PRODUCT_TYPE_SUBSCRIPTION.equals(snapshot.getProductType())) {
+            return "subscription";
+        }
+        return "in-app-purchase";
+    }
+
+    private Date resolvePurchaseTime(GooglePlayPurchaseSnapshot snapshot, GooglePlayOrder order) {
+        if (snapshot.getStartTime() != null) {
+            return snapshot.getStartTime();
+        }
+        if (order.getLastEventTime() != null) {
+            return order.getLastEventTime();
+        }
+        if (snapshot.getLastSyncedAt() != null) {
+            return snapshot.getLastSyncedAt();
+        }
+        return new Date();
+    }
+
+    private String resolveTransactionId(GooglePlayOrder order) {
+        if (order.getGoogleOrderId() != null && !order.getGoogleOrderId().isBlank()) {
+            return order.getGoogleOrderId();
+        }
+        return order.getOrderKey();
+    }
+}

src/main/java/com/yolo/keyborad/googleplay/GooglePlayRtdnEventService.java

@@ -0,0 +1,99 @@
+package com.yolo.keyborad.googleplay;
+
+import com.baomidou.mybatisplus.core.toolkit.Wrappers;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.yolo.keyborad.common.ErrorCode;
+import com.yolo.keyborad.exception.BusinessException;
+import com.yolo.keyborad.mapper.GooglePlayRtdnEventMapper;
+import com.yolo.keyborad.model.dto.googleplay.GooglePlayPubSubPushRequest;
+import com.yolo.keyborad.model.entity.googleplay.GooglePlayRtdnEvent;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Component;
+
+import java.util.Date;
+
+@Component
+@RequiredArgsConstructor
+public class GooglePlayRtdnEventService {
+
+    private final GooglePlayRtdnEventMapper rtdnEventMapper;
+    private final GooglePlayNotificationSupport notificationSupport;
+    private final ObjectMapper objectMapper;
+
+    public GooglePlayRtdnEvent upsertEvent(GooglePlayPubSubPushRequest pushRequest,
+                                           GooglePlayPubSubPushRequest.DeveloperNotification notification) {
+        String messageId = pushRequest.getMessage().getMessageId();
+        GooglePlayRtdnEvent event = rtdnEventMapper.selectOne(Wrappers.<GooglePlayRtdnEvent>lambdaQuery()
+                .eq(GooglePlayRtdnEvent::getMessageId, messageId)
+                .last("LIMIT 1"));
+        if (event == null) {
+            event = new GooglePlayRtdnEvent();
+            event.setMessageId(messageId);
+            event.setRetryCount(0);
+            event.setCreatedAt(new Date());
+        } else if (GooglePlayConstants.EVENT_PROCESSED.equals(event.getStatus())) {
+            return event;
+        } else {
+            event.setRetryCount(event.getRetryCount() == null ? 1 : event.getRetryCount() + 1);
+        }
+        fillEvent(event, pushRequest, notification);
+        saveEvent(event);
+        return event;
+    }
+
+    public void markProcessed(GooglePlayRtdnEvent event) {
+        mark(event, GooglePlayConstants.EVENT_PROCESSED, null, true);
+    }
+
+    public void markIgnored(GooglePlayRtdnEvent event) {
+        mark(event, GooglePlayConstants.EVENT_IGNORED, null, true);
+    }
+
+    public void markFailed(GooglePlayRtdnEvent event, Exception e) {
+        mark(event, GooglePlayConstants.EVENT_FAILED, e.getMessage(), false);
+    }
+
+    private void fillEvent(GooglePlayRtdnEvent event,
+                           GooglePlayPubSubPushRequest pushRequest,
+                           GooglePlayPubSubPushRequest.DeveloperNotification notification) {
+        event.setSubscriptionName(pushRequest.getSubscription());
+        event.setPackageName(notification.getPackageName());
+        event.setEventType(notificationSupport.resolveEventType(notification));
+        event.setNotificationType(notificationSupport.resolveNotificationType(notification));
+        event.setNotificationName(notificationSupport.resolveNotificationName(notification));
+        event.setPurchaseToken(notificationSupport.resolvePurchaseToken(notification));
+        event.setProductId(notificationSupport.resolveProductId(notification));
+        event.setOrderId(notification.getVoidedPurchaseNotification() == null ? null : notification.getVoidedPurchaseNotification().getOrderId());
+        event.setEventTime(notificationSupport.resolveEventTime(notification.getEventTimeMillis()));
+        event.setStatus(GooglePlayConstants.EVENT_RECEIVED);
+        event.setRawEnvelope(writeJson(pushRequest));
+        event.setRawPayload(writeJson(notification));
+        event.setErrorMessage(null);
+        event.setProcessedAt(null);
+        event.setUpdatedAt(new Date());
+    }
+
+    private void mark(GooglePlayRtdnEvent event, String status, String errorMessage, boolean processed) {
+        event.setStatus(status);
+        event.setErrorMessage(errorMessage);
+        event.setProcessedAt(processed ? new Date() : null);
+        event.setUpdatedAt(new Date());
+        saveEvent(event);
+    }
+
+    private void saveEvent(GooglePlayRtdnEvent event) {
+        if (event.getId() == null) {
+            rtdnEventMapper.insert(event);
+            return;
+        }
+        rtdnEventMapper.updateById(event);
+    }
+
+    private String writeJson(Object value) {
+        try {
+            return objectMapper.writeValueAsString(value);
+        } catch (Exception e) {
+            throw new BusinessException(ErrorCode.OPERATION_ERROR, "JSON 序列化失败");
+        }
+    }
+}

src/main/java/com/yolo/keyborad/googleplay/GooglePlayServiceAccountTokenProvider.java

@@ -0,0 +1,145 @@
+package com.yolo.keyborad.googleplay;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.yolo.keyborad.config.GooglePlayProperties;
+import io.jsonwebtoken.Jwts;
+import io.jsonwebtoken.SignatureAlgorithm;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.core.io.Resource;
+import org.springframework.core.io.ResourceLoader;
+import org.springframework.stereotype.Component;
+
+import java.net.URI;
+import java.net.URLEncoder;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.nio.charset.StandardCharsets;
+import java.security.KeyFactory;
+import java.security.PrivateKey;
+import java.security.spec.PKCS8EncodedKeySpec;
+import java.time.Instant;
+import java.util.Base64;
+import java.util.Date;
+
+@Slf4j
+@Component
+@RequiredArgsConstructor
+public class GooglePlayServiceAccountTokenProvider {
+
+    private static final long ASSERTION_EXPIRE_SECONDS = 3600;
+    private static final long REFRESH_EARLY_SECONDS = 300;
+
+    private final GooglePlayProperties properties;
+    private final ResourceLoader resourceLoader;
+    private final ObjectMapper objectMapper;
+    private final HttpClient googlePlayHttpClient;
+
+    private volatile CachedToken cachedToken;
+    private volatile ServiceAccountCredentials credentials;
+
+    public String getAccessToken() {
+        CachedToken token = cachedToken;
+        if (token != null && token.expiresAt().isAfter(Instant.now().plusSeconds(REFRESH_EARLY_SECONDS))) {
+            return token.token();
+        }
+        synchronized (this) {
+            token = cachedToken;
+            if (token != null && token.expiresAt().isAfter(Instant.now().plusSeconds(REFRESH_EARLY_SECONDS))) {
+                return token.token();
+            }
+            cachedToken = fetchAccessToken(loadCredentials());
+            return cachedToken.token();
+        }
+    }
+
+    private CachedToken fetchAccessToken(ServiceAccountCredentials account) {
+        try {
+            String assertion = buildAssertion(account);
+            String body = "grant_type=" + encode("urn:ietf:params:oauth:grant-type:jwt-bearer")
+                    + "&assertion=" + encode(assertion);
+            HttpRequest request = HttpRequest.newBuilder(URI.create(properties.getOauthTokenUri()))
+                    .header("Content-Type", "application/x-www-form-urlencoded")
+                    .POST(HttpRequest.BodyPublishers.ofString(body))
+                    .build();
+            HttpResponse<String> response = googlePlayHttpClient.send(request, HttpResponse.BodyHandlers.ofString());
+            if (response.statusCode() / 100 != 2) {
+                throw new GooglePlayApiException(response.statusCode(), response.body());
+            }
+            JsonNode jsonNode = objectMapper.readTree(response.body());
+            String accessToken = jsonNode.path("access_token").asText();
+            long expiresIn = jsonNode.path("expires_in").asLong(ASSERTION_EXPIRE_SECONDS);
+            return new CachedToken(accessToken, Instant.now().plusSeconds(expiresIn));
+        } catch (GooglePlayApiException e) {
+            throw e;
+        } catch (Exception e) {
+            throw new GooglePlayApiException("获取 Google Play access token 失败", e);
+        }
+    }
+
+    private String buildAssertion(ServiceAccountCredentials account) {
+        Instant now = Instant.now();
+        return Jwts.builder()
+                .setHeaderParam("kid", account.privateKeyId())
+                .setIssuer(account.clientEmail())
+                .setAudience(properties.getOauthTokenUri())
+                .claim("scope", properties.getAndroidPublisherScope())
+                .setIssuedAt(Date.from(now))
+                .setExpiration(Date.from(now.plusSeconds(ASSERTION_EXPIRE_SECONDS)))
+                .signWith(account.privateKey(), SignatureAlgorithm.RS256)
+                .compact();
+    }
+
+    private ServiceAccountCredentials loadCredentials() {
+        ServiceAccountCredentials account = credentials;
+        if (account != null) {
+            return account;
+        }
+        synchronized (this) {
+            account = credentials;
+            if (account != null) {
+                return account;
+            }
+            credentials = readCredentials();
+            return credentials;
+        }
+    }
+
+    private ServiceAccountCredentials readCredentials() {
+        if (properties.getServiceAccountKeyPath() == null || properties.getServiceAccountKeyPath().isBlank()) {
+            throw new IllegalStateException("google.play.service-account-key-path 未配置");
+        }
+        try {
+            Resource resource = resourceLoader.getResource(properties.getServiceAccountKeyPath());
+            JsonNode jsonNode = objectMapper.readTree(resource.getInputStream());
+            String clientEmail = jsonNode.path("client_email").asText();
+            String privateKeyId = jsonNode.path("private_key_id").asText();
+            String privateKeyPem = jsonNode.path("private_key").asText();
+            return new ServiceAccountCredentials(clientEmail, privateKeyId, parsePrivateKey(privateKeyPem));
+        } catch (Exception e) {
+            throw new GooglePlayApiException("读取 Google Play service account 失败", e);
+        }
+    }
+
+    private PrivateKey parsePrivateKey(String privateKeyPem) throws Exception {
+        String sanitized = privateKeyPem
+                .replace("-----BEGIN PRIVATE KEY-----", "")
+                .replace("-----END PRIVATE KEY-----", "")
+                .replaceAll("\\s+", "");
+        byte[] decoded = Base64.getDecoder().decode(sanitized);
+        PKCS8EncodedKeySpec spec = new PKCS8EncodedKeySpec(decoded);
+        return KeyFactory.getInstance("RSA").generatePrivate(spec);
+    }
+
+    private String encode(String raw) {
+        return URLEncoder.encode(raw, StandardCharsets.UTF_8);
+    }
+
+    private record CachedToken(String token, Instant expiresAt) {
+    }
+
+    private record ServiceAccountCredentials(String clientEmail, String privateKeyId, PrivateKey privateKey) {
+    }
+}

src/main/java/com/yolo/keyborad/googleplay/GooglePlayStateService.java

@@ -0,0 +1,289 @@
+package com.yolo.keyborad.googleplay;
+
+import com.baomidou.mybatisplus.core.toolkit.Wrappers;
+import com.yolo.keyborad.common.ErrorCode;
+import com.yolo.keyborad.exception.BusinessException;
+import com.yolo.keyborad.googleplay.model.GooglePlayPurchaseSnapshot;
+import com.yolo.keyborad.googleplay.model.GooglePlaySyncCommand;
+import com.yolo.keyborad.googleplay.model.GooglePlaySyncResult;
+import com.yolo.keyborad.mapper.GooglePlayOrderMapper;
+import com.yolo.keyborad.mapper.GooglePlayPurchaseTokenMapper;
+import com.yolo.keyborad.model.entity.KeyboardProductItems;
+import com.yolo.keyborad.model.entity.googleplay.GooglePlayOrder;
+import com.yolo.keyborad.model.entity.googleplay.GooglePlayPurchaseToken;
+import com.yolo.keyborad.model.entity.googleplay.GooglePlayUserEntitlement;
+import com.yolo.keyborad.service.KeyboardProductItemsService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Component;
+import org.springframework.dao.DuplicateKeyException;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.math.BigDecimal;
+import java.util.Date;
+
+@Component
+@RequiredArgsConstructor
+public class GooglePlayStateService {
+
+    private final GooglePlayOrderMapper orderMapper;
+    private final GooglePlayPurchaseTokenMapper purchaseTokenMapper;
+    private final KeyboardProductItemsService productItemsService;
+    private final GooglePlayEntitlementApplier entitlementApplier;
+    private final GooglePlayPurchaseRecordService purchaseRecordService;
+
+    @Transactional(rollbackFor = Exception.class)
+    public GooglePlaySyncResult sync(GooglePlaySyncCommand command, GooglePlayPurchaseSnapshot snapshot) {
+        String productId = (snapshot.getBasePlanId() != null) ?
+                snapshot.getBasePlanId() :
+                snapshot.getPurchaseOptionId();
+        KeyboardProductItems product = loadProduct(productId);
+        GooglePlayOrder order = buildOrder(command, snapshot);
+        GooglePlayPurchaseToken token = buildToken(command, snapshot);
+        persistOrderIfNew(order);
+        GooglePlayUserEntitlement entitlement = null;
+        if (command.getUserId() != null) {
+            entitlement = entitlementApplier.apply(command.getUserId(), product, snapshot, order);
+            purchaseRecordService.recordSuccess(command.getUserId(), product, snapshot, order, entitlement);
+        }
+        // 再次保存以持久化 apply() 中修改的 deliveryStatus/grantedQuantity
+        saveOrder(order);
+        token.setLatestOrderKey(order.getOrderKey());
+        token.setLatestOrderId(order.getGoogleOrderId());
+        saveToken(token);
+        return GooglePlaySyncResult.builder()
+                .order(order)
+                .token(token)
+                .entitlement(entitlement)
+                .acknowledgeRequired(requiresAcknowledge(snapshot, command.getUserId(), order))
+                .consumeRequired(requiresConsume(snapshot, entitlement, command.getUserId(), order))
+                .linkedPurchaseTokenToSync(resolveLinkedToken(snapshot))
+                .build();
+    }
+
+    @Transactional(rollbackFor = Exception.class)
+    public void markAcknowledged(String purchaseToken, String orderKey) {
+        updateAckState(purchaseToken, orderKey, GooglePlayConstants.ACK_ACKNOWLEDGED);
+    }
+
+    @Transactional(rollbackFor = Exception.class)
+    public void markConsumed(String purchaseToken, String orderKey) {
+        updateConsumptionState(purchaseToken, orderKey, GooglePlayConstants.CONSUMPTION_CONSUMED);
+    }
+
+    public GooglePlayPurchaseToken findToken(String purchaseToken) {
+        return purchaseTokenMapper.selectOne(Wrappers.<GooglePlayPurchaseToken>lambdaQuery()
+                .eq(GooglePlayPurchaseToken::getPurchaseToken, purchaseToken)
+                .last("LIMIT 1"));
+    }
+
+    private KeyboardProductItems loadProduct(String productId) {
+        KeyboardProductItems product = productItemsService.getProductEntityByProductId(productId);
+        if (product == null) {
+            throw new BusinessException(ErrorCode.PRODUCT_NOT_FOUND, "Google Play 商品不存在: " + productId);
+        }
+        return product;
+    }
+
+    private GooglePlayOrder buildOrder(GooglePlaySyncCommand command, GooglePlayPurchaseSnapshot snapshot) {
+        GooglePlayOrder order = orderMapper.selectOne(Wrappers.<GooglePlayOrder>lambdaQuery()
+                .eq(GooglePlayOrder::getOrderKey, snapshot.getOrderKey())
+                .last("LIMIT 1"));
+        if (order == null) {
+            order = new GooglePlayOrder();
+            order.setCreatedAt(new Date());
+            order.setDeliveryStatus(defaultDeliveryStatus(snapshot));
+            order.setGrantedQuantity(BigDecimal.ZERO);
+        }
+        order.setUserId(command.getUserId());
+        order.setPackageName(snapshot.getPackageName());
+        order.setProductId(snapshot.getProductId());
+        order.setProductType(snapshot.getProductType());
+        order.setPurchaseToken(snapshot.getPurchaseToken());
+        order.setOrderKey(snapshot.getOrderKey());
+        order.setGoogleOrderId(snapshot.getGoogleOrderId());
+        order.setLinkedPurchaseToken(snapshot.getLinkedPurchaseToken());
+        order.setOrderState(snapshot.getState());
+        order.setAcknowledgementState(snapshot.getAcknowledgementState());
+        order.setConsumptionState(snapshot.getConsumptionState());
+        order.setQuantity(snapshot.getQuantity());
+        order.setRefundableQuantity(snapshot.getRefundableQuantity());
+        order.setEntitlementStartTime(snapshot.getStartTime());
+        order.setEntitlementEndTime(snapshot.getExpiryTime());
+        order.setLastEventTime(command.getEventTime());
+        order.setLastSyncedAt(snapshot.getLastSyncedAt());
+        order.setRawResponse(snapshot.getRawResponse());
+        order.setUpdatedAt(new Date());
+        return order;
+    }
+
+    private GooglePlayPurchaseToken buildToken(GooglePlaySyncCommand command, GooglePlayPurchaseSnapshot snapshot) {
+        GooglePlayPurchaseToken token = findToken(snapshot.getPurchaseToken());
+        if (token == null) {
+            token = new GooglePlayPurchaseToken();
+            token.setCreatedAt(new Date());
+        }
+        token.setPurchaseToken(snapshot.getPurchaseToken());
+        token.setLinkedPurchaseToken(snapshot.getLinkedPurchaseToken());
+        token.setUserId(command.getUserId());
+        token.setPackageName(snapshot.getPackageName());
+        token.setProductId(snapshot.getProductId());
+        token.setProductType(snapshot.getProductType());
+        token.setTokenState(snapshot.getState());
+        token.setAcknowledgementState(snapshot.getAcknowledgementState());
+        token.setConsumptionState(snapshot.getConsumptionState());
+        token.setAutoRenewEnabled(snapshot.getAutoRenewEnabled());
+        token.setExternalAccountId(snapshot.getExternalAccountId());
+        token.setExternalProfileId(snapshot.getExternalProfileId());
+        token.setRegionCode(snapshot.getRegionCode());
+        token.setStartTime(snapshot.getStartTime());
+        token.setExpiryTime(snapshot.getExpiryTime());
+        token.setAutoResumeTime(snapshot.getAutoResumeTime());
+        token.setCanceledStateReason(snapshot.getCanceledStateReason());
+        token.setLastEventType(command.getNotificationName());
+        token.setLastEventTime(command.getEventTime());
+        token.setLastSyncedAt(snapshot.getLastSyncedAt());
+        token.setRawResponse(snapshot.getRawResponse());
+        token.setUpdatedAt(new Date());
+        return token;
+    }
+
+    private boolean requiresAcknowledge(GooglePlayPurchaseSnapshot snapshot, Long userId, GooglePlayOrder order) {
+        if (userId == null
+                || !GooglePlayConstants.ACK_PENDING.equals(snapshot.getAcknowledgementState())
+                || !GooglePlayConstants.STATE_ACTIVE.equals(snapshot.getState())) {
+            return false;
+        }
+        if (!GooglePlayConstants.PRODUCT_TYPE_ONE_TIME.equals(snapshot.getProductType())) {
+            return true;
+        }
+        return Boolean.TRUE.equals(order.getDeliveryOwnershipGranted());
+    }
+
+    private boolean requiresConsume(GooglePlayPurchaseSnapshot snapshot,
+                                    GooglePlayUserEntitlement entitlement,
+                                    Long userId,
+                                    GooglePlayOrder order) {
+        if (userId == null || entitlement == null) {
+            return false;
+        }
+        boolean oneTime = GooglePlayConstants.PRODUCT_TYPE_ONE_TIME.equals(snapshot.getProductType());
+        boolean wallet = GooglePlayConstants.ENTITLEMENT_WALLET_TOP_UP.equals(entitlement.getBenefitType());
+        boolean active = GooglePlayConstants.STATE_ACTIVE.equals(snapshot.getState());
+        boolean pending = GooglePlayConstants.CONSUMPTION_PENDING.equals(snapshot.getConsumptionState());
+        boolean owned = Boolean.TRUE.equals(order.getDeliveryOwnershipGranted());
+        return oneTime && wallet && active && pending && owned;
+    }
+
+    private String resolveLinkedToken(GooglePlayPurchaseSnapshot snapshot) {
+        if (!GooglePlayConstants.STATE_PENDING_PURCHASE_CANCELED.equals(snapshot.getState())) {
+            return null;
+        }
+        return snapshot.getLinkedPurchaseToken();
+    }
+
+    private void saveOrder(GooglePlayOrder order) {
+        if (order.getId() == null) {
+            insertOrder(order);
+            return;
+        }
+        orderMapper.updateById(order);
+    }
+
+    /**
+     * 仅在新订单场景预落库，避免并发请求用旧快照把发货状态回写成 PENDING。
+     */
+    private void persistOrderIfNew(GooglePlayOrder order) {
+        if (order.getId() == null) {
+            saveOrder(order);
+        }
+    }
+
+    private void saveToken(GooglePlayPurchaseToken token) {
+        if (token.getId() == null) {
+            insertToken(token);
+            return;
+        }
+        purchaseTokenMapper.updateById(token);
+    }
+
+    /**
+     * 并发首写同一订单时，唯一键冲突后回读已存在记录继续流程。
+     */
+    private void insertOrder(GooglePlayOrder order) {
+        try {
+            orderMapper.insert(order);
+        } catch (DuplicateKeyException e) {
+            GooglePlayOrder existingOrder = orderMapper.selectOne(Wrappers.<GooglePlayOrder>lambdaQuery()
+                    .eq(GooglePlayOrder::getOrderKey, order.getOrderKey())
+                    .last("LIMIT 1"));
+            if (existingOrder == null) {
+                throw e;
+            }
+            order.setId(existingOrder.getId());
+            order.setCreatedAt(existingOrder.getCreatedAt());
+            order.setDeliveryStatus(existingOrder.getDeliveryStatus());
+            order.setGrantedQuantity(existingOrder.getGrantedQuantity());
+            orderMapper.updateById(order);
+        }
+    }
+
+    /**
+     * purchaseToken 首次并发写入时回读已有记录，避免重复插入直接失败。
+     */
+    private void insertToken(GooglePlayPurchaseToken token) {
+        try {
+            purchaseTokenMapper.insert(token);
+        } catch (DuplicateKeyException e) {
+            GooglePlayPurchaseToken existingToken = findToken(token.getPurchaseToken());
+            if (existingToken == null) {
+                throw e;
+            }
+            token.setId(existingToken.getId());
+            token.setCreatedAt(existingToken.getCreatedAt());
+            purchaseTokenMapper.updateById(token);
+        }
+    }
+
+    private void updateAckState(String purchaseToken, String orderKey, String state) {
+        GooglePlayPurchaseToken token = findToken(purchaseToken);
+        if (token != null) {
+            token.setAcknowledgementState(state);
+            token.setUpdatedAt(new Date());
+            purchaseTokenMapper.updateById(token);
+        }
+        GooglePlayOrder order = orderMapper.selectOne(Wrappers.<GooglePlayOrder>lambdaQuery()
+                .eq(GooglePlayOrder::getOrderKey, orderKey)
+                .last("LIMIT 1"));
+        if (order == null) {
+            return;
+        }
+        order.setAcknowledgementState(state);
+        order.setUpdatedAt(new Date());
+        orderMapper.updateById(order);
+    }
+
+    private void updateConsumptionState(String purchaseToken, String orderKey, String state) {
+        GooglePlayPurchaseToken token = findToken(purchaseToken);
+        if (token != null) {
+            token.setConsumptionState(state);
+            token.setUpdatedAt(new Date());
+            purchaseTokenMapper.updateById(token);
+        }
+        GooglePlayOrder order = orderMapper.selectOne(Wrappers.<GooglePlayOrder>lambdaQuery()
+                .eq(GooglePlayOrder::getOrderKey, orderKey)
+                .last("LIMIT 1"));
+        if (order == null) {
+            return;
+        }
+        order.setConsumptionState(state);
+        order.setUpdatedAt(new Date());
+        orderMapper.updateById(order);
+    }
+
+    private String defaultDeliveryStatus(GooglePlayPurchaseSnapshot snapshot) {
+        if (GooglePlayConstants.PRODUCT_TYPE_SUBSCRIPTION.equals(snapshot.getProductType())) {
+            return GooglePlayConstants.DELIVERY_NOT_REQUIRED;
+        }
+        return GooglePlayConstants.DELIVERY_PENDING;
+    }
+}

src/main/java/com/yolo/keyborad/googleplay/GooglePlayVipBenefitService.java

@@ -0,0 +1,45 @@
+package com.yolo.keyborad.googleplay;
+
+import com.yolo.keyborad.common.ErrorCode;
+import com.yolo.keyborad.exception.BusinessException;
+import com.yolo.keyborad.model.entity.KeyboardProductItems;
+import com.yolo.keyborad.model.entity.KeyboardUser;
+import com.yolo.keyborad.service.UserService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Component;
+
+import java.util.Date;
+
+@Component
+@RequiredArgsConstructor
+public class GooglePlayVipBenefitService {
+
+    private final UserService userService;
+
+    public void activate(Long userId, KeyboardProductItems product, Date expiry) {
+        KeyboardUser user = requireUser(userId);
+        user.setIsVip(true);
+        user.setVipLevel(product.getLevel());
+        user.setVipExpiry(expiry);
+        if (!userService.updateById(user)) {
+            throw new BusinessException(ErrorCode.UPDATE_USER_VIP_STATUS_ERROR);
+        }
+    }
+
+    public void deactivate(Long userId, Date expiry) {
+        KeyboardUser user = requireUser(userId);
+        user.setIsVip(false);
+        user.setVipExpiry(expiry);
+        if (!userService.updateById(user)) {
+            throw new BusinessException(ErrorCode.UPDATE_USER_VIP_STATUS_ERROR);
+        }
+    }
+
+    private KeyboardUser requireUser(Long userId) {
+        KeyboardUser user = userService.getById(userId);
+        if (user == null) {
+            throw new BusinessException(ErrorCode.USER_NOT_FOUND);
+        }
+        return user;
+    }
+}

src/main/java/com/yolo/keyborad/googleplay/GooglePlayWalletBenefitService.java

@@ -0,0 +1,72 @@
+package com.yolo.keyborad.googleplay;
+
+import com.yolo.keyborad.model.entity.KeyboardUserWallet;
+import com.yolo.keyborad.service.KeyboardUserWalletService;
+import com.yolo.keyborad.service.KeyboardWalletTransactionService;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Component;
+
+import java.math.BigDecimal;
+import java.util.Date;
+
+@Slf4j
+@Component
+@RequiredArgsConstructor
+public class GooglePlayWalletBenefitService {
+
+    private static final short GOOGLE_PLAY_WALLET_TX_TYPE = 3;
+
+    private final KeyboardUserWalletService walletService;
+    private final KeyboardWalletTransactionService walletTransactionService;
+
+    public void grant(Long userId, Long orderId, String productName, BigDecimal amount) {
+        KeyboardUserWallet wallet = getOrCreateWallet(userId);
+        BigDecimal before = defaultBalance(wallet.getBalance());
+        BigDecimal after = before.add(amount);
+        wallet.setBalance(after);
+        wallet.setUpdatedAt(new Date());
+        walletService.saveOrUpdate(wallet);
+        walletTransactionService.createTransaction(userId, orderId, amount, GOOGLE_PLAY_WALLET_TX_TYPE,
+                before, after,   productName);
+    }
+
+    public boolean revoke(Long userId, Long orderId, BigDecimal amount) {
+        KeyboardUserWallet wallet = walletService.lambdaQuery()
+                .eq(KeyboardUserWallet::getUserId, userId)
+                .one();
+        BigDecimal before = wallet == null ? BigDecimal.ZERO : defaultBalance(wallet.getBalance());
+        if (before.compareTo(amount) < 0) {
+            log.error("Google Play 退款回滚失败，余额不足, userId={}, orderId={}", userId, orderId);
+            return false;
+        }
+        BigDecimal after = before.subtract(amount);
+        wallet.setBalance(after);
+        wallet.setUpdatedAt(new Date());
+        walletService.updateById(wallet);
+        walletTransactionService.createTransaction(userId, orderId, amount.negate(), GOOGLE_PLAY_WALLET_TX_TYPE,
+                before, after, "Google Play 退款回滚");
+        return true;
+    }
+
+    private KeyboardUserWallet getOrCreateWallet(Long userId) {
+        KeyboardUserWallet wallet = walletService.lambdaQuery()
+                .eq(KeyboardUserWallet::getUserId, userId)
+                .one();
+        if (wallet != null) {
+            return wallet;
+        }
+        KeyboardUserWallet created = new KeyboardUserWallet();
+        created.setUserId(userId);
+        created.setBalance(BigDecimal.ZERO);
+        created.setStatus((short) 1);
+        created.setVersion(0);
+        created.setCreatedAt(new Date());
+        walletService.save(created);
+        return created;
+    }
+
+    private BigDecimal defaultBalance(BigDecimal balance) {
+        return balance == null ? BigDecimal.ZERO : balance;
+    }
+}

src/main/java/com/yolo/keyborad/googleplay/model/GooglePlayPurchaseSnapshot.java

@@ -0,0 +1,61 @@
+package com.yolo.keyborad.googleplay.model;
+
+import lombok.Builder;
+import lombok.Data;
+
+import java.util.Date;
+
+@Data
+@Builder(toBuilder = true)
+public class GooglePlayPurchaseSnapshot {
+
+    private String packageName;
+
+    private String productId;
+
+    private String productType;
+
+    private String basePlanId;
+
+    private String purchaseToken;
+
+    private String orderKey;
+
+    private String googleOrderId;
+
+    private String linkedPurchaseToken;
+
+    private String state;
+
+    private String acknowledgementState;
+
+    private String consumptionState;
+
+    private Integer quantity;
+
+    private Integer refundableQuantity;
+
+    private Boolean autoRenewEnabled;
+
+    private Boolean accessGranted;
+
+    private String externalAccountId;
+
+    private String externalProfileId;
+
+    private String regionCode;
+
+    private String canceledStateReason;
+
+    private Date startTime;
+
+    private Date expiryTime;
+
+    private Date autoResumeTime;
+
+    private Date lastSyncedAt;
+
+    private String rawResponse;
+
+    private String purchaseOptionId;
+}

src/main/java/com/yolo/keyborad/googleplay/model/GooglePlaySyncCommand.java

@@ -0,0 +1,35 @@
+package com.yolo.keyborad.googleplay.model;
+
+import lombok.Builder;
+import lombok.Data;
+
+import java.util.Date;
+
+@Data
+@Builder(toBuilder = true)
+public class GooglePlaySyncCommand {
+
+    private Long userId;
+
+    private String packageName;
+
+    private String productId;
+
+    private String productType;
+
+    private String purchaseToken;
+
+    private String source;
+
+    private String eventType;
+
+    private Integer notificationType;
+
+    private String notificationName;
+
+    private String messageId;
+
+    private String subscriptionName;
+
+    private Date eventTime;
+}

src/main/java/com/yolo/keyborad/googleplay/model/GooglePlaySyncResult.java

@@ -0,0 +1,24 @@
+package com.yolo.keyborad.googleplay.model;
+
+import com.yolo.keyborad.model.entity.googleplay.GooglePlayOrder;
+import com.yolo.keyborad.model.entity.googleplay.GooglePlayPurchaseToken;
+import com.yolo.keyborad.model.entity.googleplay.GooglePlayUserEntitlement;
+import lombok.Builder;
+import lombok.Data;
+
+@Data
+@Builder
+public class GooglePlaySyncResult {
+
+    private GooglePlayOrder order;
+
+    private GooglePlayPurchaseToken token;
+
+    private GooglePlayUserEntitlement entitlement;
+
+    private boolean acknowledgeRequired;
+
+    private boolean consumeRequired;
+
+    private String linkedPurchaseTokenToSync;
+}

src/main/java/com/yolo/keyborad/mapper/GooglePlayOrderMapper.java

@@ -0,0 +1,24 @@
+package com.yolo.keyborad.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.yolo.keyborad.model.entity.googleplay.GooglePlayOrder;
+import org.apache.ibatis.annotations.Param;
+import org.apache.ibatis.annotations.Update;
+
+public interface GooglePlayOrderMapper extends BaseMapper<GooglePlayOrder> {
+
+    /**
+     * 原子抢占发货资格，只有当前状态匹配时才允许进入处理中。
+     */
+    @Update("""
+            UPDATE google_play_order
+            SET delivery_status = #{targetStatus},
+                updated_at = #{updatedAt}
+            WHERE id = #{orderId}
+              AND delivery_status = #{expectedStatus}
+            """)
+    int updateDeliveryStatusIfMatch(@Param("orderId") Long orderId,
+                                    @Param("expectedStatus") String expectedStatus,
+                                    @Param("targetStatus") String targetStatus,
+                                    @Param("updatedAt") java.util.Date updatedAt);
+}

src/main/java/com/yolo/keyborad/mapper/GooglePlayPurchaseTokenMapper.java

@@ -0,0 +1,7 @@
+package com.yolo.keyborad.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.yolo.keyborad.model.entity.googleplay.GooglePlayPurchaseToken;
+
+public interface GooglePlayPurchaseTokenMapper extends BaseMapper<GooglePlayPurchaseToken> {
+}

src/main/java/com/yolo/keyborad/mapper/GooglePlayRtdnEventMapper.java

@@ -0,0 +1,7 @@
+package com.yolo.keyborad.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.yolo.keyborad.model.entity.googleplay.GooglePlayRtdnEvent;
+
+public interface GooglePlayRtdnEventMapper extends BaseMapper<GooglePlayRtdnEvent> {
+}

src/main/java/com/yolo/keyborad/mapper/GooglePlayUserEntitlementMapper.java

@@ -0,0 +1,7 @@
+package com.yolo.keyborad.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.yolo.keyborad.model.entity.googleplay.GooglePlayUserEntitlement;
+
+public interface GooglePlayUserEntitlementMapper extends BaseMapper<GooglePlayUserEntitlement> {
+}

src/main/java/com/yolo/keyborad/model/dto/googleplay/GooglePlayPubSubPushRequest.java

@@ -0,0 +1,60 @@
+package com.yolo.keyborad.model.dto.googleplay;
+
+import lombok.Data;
+
+import java.util.Map;
+
+@Data
+public class GooglePlayPubSubPushRequest {
+
+    private Message message;
+
+    private String subscription;
+
+    @Data
+    public static class Message {
+        private Map<String, String> attributes;
+        private String data;
+        private String messageId;
+        private String publishTime;
+    }
+
+    @Data
+    public static class DeveloperNotification {
+        private String version;
+        private String packageName;
+        private String eventTimeMillis;
+        private SubscriptionNotification subscriptionNotification;
+        private OneTimeProductNotification oneTimeProductNotification;
+        private VoidedPurchaseNotification voidedPurchaseNotification;
+        private TestNotification testNotification;
+    }
+
+    @Data
+    public static class SubscriptionNotification {
+        private String version;
+        private Integer notificationType;
+        private String purchaseToken;
+    }
+
+    @Data
+    public static class OneTimeProductNotification {
+        private String version;
+        private Integer notificationType;
+        private String purchaseToken;
+        private String sku;
+    }
+
+    @Data
+    public static class VoidedPurchaseNotification {
+        private String purchaseToken;
+        private String orderId;
+        private Integer productType;
+        private Integer refundType;
+    }
+
+    @Data
+    public static class TestNotification {
+        private String version;
+    }
+}

src/main/java/com/yolo/keyborad/model/dto/googleplay/GooglePlayPurchaseVerifyReq.java

@@ -0,0 +1,15 @@
+package com.yolo.keyborad.model.dto.googleplay;
+
+import lombok.Data;
+
+@Data
+public class GooglePlayPurchaseVerifyReq {
+
+    private String packageName;
+
+    private String productId;
+
+    private String productType;
+
+    private String purchaseToken;
+}

src/main/java/com/yolo/keyborad/model/entity/KeyboardAiCompanion.java

@@ -119,14 +119,6 @@ public class KeyboardAiCompanion {
     @Schema(description="更新时间")
     private Date updatedAt;
 
-    @TableField(value = "prologue")
-    @Schema(description="开场白")
-    private String prologue;
-
-    @TableField(value = "prologue_audio")
-    @Schema(description="开场白音频")
-    private String prologueAudio;
-
     @TableField(value = "voice_id")
     @Schema(description="角色音频Id")
     private String voiceId;

src/main/java/com/yolo/keyborad/model/entity/KeyboardAiCompanionI18n.java

@@ -75,4 +75,13 @@ public class KeyboardAiCompanionI18n {
     @TableField(value = "updated_at")
     @Schema(description="更新时间")
     private Date updatedAt;
+
+    @TableField(value = "prologue")
+    @Schema(description = "开场白")
+    private String prologue;
+
+    @TableField(value = "prologue_audio")
+    @Schema(description = "开场白音频")
+    private String prologueAudio;
+
 }

src/main/java/com/yolo/keyborad/model/entity/KeyboardProductItems.java

@@ -112,4 +112,8 @@ public class KeyboardProductItems {
     @TableField(value = "level")
     @Schema(description = "级别")
     private Integer level;
+
+    @TableField(value = "platform")
+    @Schema(description = "所属平台")
+    private String platform;
 }

src/main/java/com/yolo/keyborad/model/entity/KeyboardUser.java

@@ -132,4 +132,8 @@ public class KeyboardUser {
     @TableField(value = "vip_level")
     @Schema(description = "vip等级")
     private Integer vipLevel;
+
+    @TableField(value = "uuid")
+    @Schema(description = "uuid")
+    private String uuid;
 }

src/main/java/com/yolo/keyborad/model/entity/googleplay/GooglePlayOrder.java

@@ -0,0 +1,90 @@
+package com.yolo.keyborad.model.entity.googleplay;
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableField;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.Data;
+
+import java.math.BigDecimal;
+import java.util.Date;
+
+@Data
+@TableName("google_play_order")
+public class GooglePlayOrder {
+
+    @TableId(value = "id", type = IdType.AUTO)
+    private Long id;
+
+    @TableField("user_id")
+    private Long userId;
+
+    @TableField("package_name")
+    private String packageName;
+
+    @TableField("product_id")
+    private String productId;
+
+    @TableField("product_type")
+    private String productType;
+
+    @TableField("purchase_token")
+    private String purchaseToken;
+
+    @TableField("order_key")
+    private String orderKey;
+
+    @TableField("google_order_id")
+    private String googleOrderId;
+
+    @TableField("linked_purchase_token")
+    private String linkedPurchaseToken;
+
+    @TableField("order_state")
+    private String orderState;
+
+    @TableField("acknowledgement_state")
+    private String acknowledgementState;
+
+    @TableField("consumption_state")
+    private String consumptionState;
+
+    @TableField("quantity")
+    private Integer quantity;
+
+    @TableField("refundable_quantity")
+    private Integer refundableQuantity;
+
+    @TableField("delivery_status")
+    private String deliveryStatus;
+
+    @TableField("granted_quantity")
+    private BigDecimal grantedQuantity;
+
+    @TableField("entitlement_start_time")
+    private Date entitlementStartTime;
+
+    @TableField("entitlement_end_time")
+    private Date entitlementEndTime;
+
+    @TableField("last_event_time")
+    private Date lastEventTime;
+
+    @TableField("last_synced_at")
+    private Date lastSyncedAt;
+
+    @TableField("raw_response")
+    private String rawResponse;
+
+    @TableField("created_at")
+    private Date createdAt;
+
+    @TableField("updated_at")
+    private Date updatedAt;
+
+    /**
+     * 当前线程是否拿到了本次发货资格，仅用于本次请求内控制幂等，不落库。
+     */
+    @TableField(exist = false)
+    private Boolean deliveryOwnershipGranted;
+}

src/main/java/com/yolo/keyborad/model/entity/googleplay/GooglePlayPurchaseToken.java

@@ -0,0 +1,92 @@
+package com.yolo.keyborad.model.entity.googleplay;
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableField;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.Data;
+
+import java.util.Date;
+
+@Data
+@TableName("google_play_purchase_token")
+public class GooglePlayPurchaseToken {
+
+    @TableId(value = "id", type = IdType.AUTO)
+    private Long id;
+
+    @TableField("purchase_token")
+    private String purchaseToken;
+
+    @TableField("linked_purchase_token")
+    private String linkedPurchaseToken;
+
+    @TableField("user_id")
+    private Long userId;
+
+    @TableField("package_name")
+    private String packageName;
+
+    @TableField("product_id")
+    private String productId;
+
+    @TableField("product_type")
+    private String productType;
+
+    @TableField("latest_order_key")
+    private String latestOrderKey;
+
+    @TableField("latest_order_id")
+    private String latestOrderId;
+
+    @TableField("token_state")
+    private String tokenState;
+
+    @TableField("acknowledgement_state")
+    private String acknowledgementState;
+
+    @TableField("consumption_state")
+    private String consumptionState;
+
+    @TableField("auto_renew_enabled")
+    private Boolean autoRenewEnabled;
+
+    @TableField("external_account_id")
+    private String externalAccountId;
+
+    @TableField("external_profile_id")
+    private String externalProfileId;
+
+    @TableField("region_code")
+    private String regionCode;
+
+    @TableField("start_time")
+    private Date startTime;
+
+    @TableField("expiry_time")
+    private Date expiryTime;
+
+    @TableField("auto_resume_time")
+    private Date autoResumeTime;
+
+    @TableField("canceled_state_reason")
+    private String canceledStateReason;
+
+    @TableField("last_event_type")
+    private String lastEventType;
+
+    @TableField("last_event_time")
+    private Date lastEventTime;
+
+    @TableField("last_synced_at")
+    private Date lastSyncedAt;
+
+    @TableField("raw_response")
+    private String rawResponse;
+
+    @TableField("created_at")
+    private Date createdAt;
+
+    @TableField("updated_at")
+    private Date updatedAt;
+}

src/main/java/com/yolo/keyborad/model/entity/googleplay/GooglePlayRtdnEvent.java

@@ -0,0 +1,71 @@
+package com.yolo.keyborad.model.entity.googleplay;
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableField;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.Data;
+
+import java.util.Date;
+
+@Data
+@TableName("google_play_rtdn_event")
+public class GooglePlayRtdnEvent {
+
+    @TableId(value = "id", type = IdType.AUTO)
+    private Long id;
+
+    @TableField("message_id")
+    private String messageId;
+
+    @TableField("subscription_name")
+    private String subscriptionName;
+
+    @TableField("package_name")
+    private String packageName;
+
+    @TableField("event_type")
+    private String eventType;
+
+    @TableField("notification_type")
+    private Integer notificationType;
+
+    @TableField("notification_name")
+    private String notificationName;
+
+    @TableField("purchase_token")
+    private String purchaseToken;
+
+    @TableField("product_id")
+    private String productId;
+
+    @TableField("order_id")
+    private String orderId;
+
+    @TableField("event_time")
+    private Date eventTime;
+
+    @TableField("status")
+    private String status;
+
+    @TableField("retry_count")
+    private Integer retryCount;
+
+    @TableField("raw_envelope")
+    private String rawEnvelope;
+
+    @TableField("raw_payload")
+    private String rawPayload;
+
+    @TableField("error_message")
+    private String errorMessage;
+
+    @TableField("processed_at")
+    private Date processedAt;
+
+    @TableField("created_at")
+    private Date createdAt;
+
+    @TableField("updated_at")
+    private Date updatedAt;
+}

src/main/java/com/yolo/keyborad/model/entity/googleplay/GooglePlayUserEntitlement.java

@@ -0,0 +1,69 @@
+package com.yolo.keyborad.model.entity.googleplay;
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableField;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.Data;
+
+import java.math.BigDecimal;
+import java.util.Date;
+
+@Data
+@TableName("google_play_user_entitlement")
+public class GooglePlayUserEntitlement {
+
+    @TableId(value = "id", type = IdType.AUTO)
+    private Long id;
+
+    @TableField("user_id")
+    private Long userId;
+
+    @TableField("entitlement_key")
+    private String entitlementKey;
+
+    @TableField("product_id")
+    private String productId;
+
+    @TableField("product_type")
+    private String productType;
+
+    @TableField("source_purchase_token")
+    private String sourcePurchaseToken;
+
+    @TableField("current_order_key")
+    private String currentOrderKey;
+
+    @TableField("benefit_type")
+    private String benefitType;
+
+    @TableField("state")
+    private String state;
+
+    @TableField("active")
+    private Boolean active;
+
+    @TableField("quantity")
+    private BigDecimal quantity;
+
+    @TableField("start_time")
+    private Date startTime;
+
+    @TableField("end_time")
+    private Date endTime;
+
+    @TableField("last_granted_at")
+    private Date lastGrantedAt;
+
+    @TableField("last_revoked_at")
+    private Date lastRevokedAt;
+
+    @TableField("metadata")
+    private String metadata;
+
+    @TableField("created_at")
+    private Date createdAt;
+
+    @TableField("updated_at")
+    private Date updatedAt;
+}

src/main/java/com/yolo/keyborad/model/vo/googleplay/GooglePlayPurchaseVerifyResp.java

@@ -0,0 +1,35 @@
+package com.yolo.keyborad.model.vo.googleplay;
+
+import lombok.Data;
+
+import java.util.Date;
+
+@Data
+public class GooglePlayPurchaseVerifyResp {
+
+    private Long userId;
+
+    private String productId;
+
+    private String productType;
+
+    private String purchaseToken;
+
+    private String orderId;
+
+    private String orderState;
+
+    private String entitlementState;
+
+    private String deliveryStatus;
+
+    private Boolean accessGranted;
+
+    private Boolean acknowledged;
+
+    private Boolean consumed;
+
+    private Date expiryTime;
+
+    private Date lastSyncedAt;
+}

src/main/java/com/yolo/keyborad/model/vo/products/KeyboardProductItemRespVO.java

@@ -45,6 +45,9 @@ public class KeyboardProductItemRespVO {
     private String description;
 
     @Schema(description = "级别")
-        private Integer level;
+    private Integer level;
+
+    @Schema(description = "所属平台")
+    private String platform;
 }
 

src/main/java/com/yolo/keyborad/model/vo/user/KeyboardUserInfoRespVO.java

@@ -57,4 +57,6 @@ public class KeyboardUserInfoRespVO {
     @Schema(description = "vip等级")
     private Integer vipLevel;
 
+    @Schema(description = "uuid")
+    private String uuid;
 }

src/main/java/com/yolo/keyborad/model/vo/user/KeyboardUserRespVO.java

@@ -59,4 +59,8 @@ public class KeyboardUserRespVO {
     @TableField(value = "vip_level")
     @Schema(description = "vip等级")
     private Integer vipLevel;
+
+    @TableField(value = "uuid")
+    @Schema(description = "uuid")
+    private String uuid;
 }

src/main/java/com/yolo/keyborad/service/ApplePurchaseService.java

@@ -43,4 +43,11 @@ public interface ApplePurchaseService {
      * @param notification 解码后的通知载荷
      */
     void handleConsumptionRequest(ResponseBodyV2DecodedPayload notification);
+
+    /**
+     * 处理一次性购买通知（ONE_TIME_CHARGE）
+     *
+     * @param notification 解码后的通知载荷
+     */
+    void handleOneTimeChargeNotification(ResponseBodyV2DecodedPayload notification);
 }

src/main/java/com/yolo/keyborad/service/GooglePlayBillingService.java

@@ -0,0 +1,13 @@
+package com.yolo.keyborad.service;
+
+import com.yolo.keyborad.model.dto.googleplay.GooglePlayPubSubPushRequest;
+import com.yolo.keyborad.model.dto.googleplay.GooglePlayPurchaseVerifyReq;
+import com.yolo.keyborad.model.vo.googleplay.GooglePlayPurchaseVerifyResp;
+import jakarta.servlet.http.HttpServletRequest;
+
+public interface GooglePlayBillingService {
+
+    GooglePlayPurchaseVerifyResp verifyPurchase(Long userId, GooglePlayPurchaseVerifyReq req);
+
+    void handleRtdn(HttpServletRequest request, GooglePlayPubSubPushRequest pushRequest);
+}

src/main/java/com/yolo/keyborad/service/KeyboardProductItemsService.java

@@ -12,7 +12,7 @@ import java.util.List;
 public interface KeyboardProductItemsService extends IService<KeyboardProductItems>{
 
     /**
-     * 根据主键ID查询商品明细
+     * 根据主键ID和平台查询商品明细
      *
      * @param id 商品主键ID
      * @return 商品明细（不存在返回 null）
@@ -20,7 +20,7 @@ public interface KeyboardProductItemsService extends IService<KeyboardProductIte
     KeyboardProductItemRespVO getProductDetailById(Long id);
 
     /**
-     * 根据 Apple productId 查询商品明细
+     * 根据 productId 和平台查询商品明细
      *
      * @param productId 商品 productId
      * @return 商品明细（不存在返回 null）
@@ -39,6 +39,6 @@ public interface KeyboardProductItemsService extends IService<KeyboardProductIte
      * @param type 商品类型：subscription / in-app-purchase / all
      * @return 商品列表
      */
-    List<KeyboardProductItemRespVO> listProductsByType(String type);
+    List<KeyboardProductItemRespVO> listProductsByType(String type, String platform);
 
 }

src/main/java/com/yolo/keyborad/service/KeyboardUserPurchaseRecordsService.java

@@ -9,5 +9,12 @@ import com.baomidou.mybatisplus.extension.service.IService;
     
 public interface KeyboardUserPurchaseRecordsService extends IService<KeyboardUserPurchaseRecords>{
 
-
+    /**
+     * 检查购买记录是否存在
+     *
+     * @param transactionId 交易 ID
+     * @param originalTransactionId 原始交易 ID
+     * @return 存在返回 true，不存在返回 false
+     */
+    boolean checkPurchaseExists(String transactionId, String originalTransactionId);
 }

src/main/java/com/yolo/keyborad/service/UserService.java

@@ -38,4 +38,5 @@ public interface UserService extends IService<KeyboardUser> {
      */
     Boolean cancelAccount(long userId);
 
+    Long selectUserByUUid(String uuid);
 }

src/main/java/com/yolo/keyborad/service/impl/ApplePurchaseServiceImpl.java

@@ -1,5 +1,6 @@
 package com.yolo.keyborad.service.impl;
 
+import cn.dev33.satoken.stp.StpUtil;
 import com.apple.itunes.storekit.model.JWSRenewalInfoDecodedPayload;
 import com.apple.itunes.storekit.model.JWSTransactionDecodedPayload;
 import com.apple.itunes.storekit.model.NotificationTypeV2;
@@ -34,6 +35,7 @@ import java.time.format.DateTimeParseException;
 import java.util.Date;
 import java.util.List;
 import java.util.Objects;
+import java.util.UUID;
 
 /**
  * 苹果购买后置处理：订阅续期 / 内购充值 + 记录落库
@@ -152,23 +154,10 @@ public class ApplePurchaseServiceImpl implements ApplePurchaseService {
             JWSTransactionDecodedPayload transaction =
                     signedDataVerifier.verifyAndDecodeTransaction(signedTransactionInfo);
 
-            String originalTransactionId = transaction.getOriginalTransactionId();
             String productId = transaction.getProductId();
 
-            // 根据原始交易ID查询用户购买记录
+            UUID appAccountToken = transaction.getAppAccountToken();
-            List<KeyboardUserPurchaseRecords> records = purchaseRecordsService.lambdaQuery()
+            Long userId = userService.selectUserByUUid(appAccountToken.toString());
-                    .eq(KeyboardUserPurchaseRecords::getOriginalTransactionId, originalTransactionId)
-                    .orderByDesc(KeyboardUserPurchaseRecords::getId)
-                    .last("LIMIT 1")
-                    .list();
-
-            if (records == null || records.isEmpty()) {
-                log.warn("No purchase record found for originalTransactionId={}", originalTransactionId);
-                return;
-            }
-
-            KeyboardUserPurchaseRecords existingRecord = records.get(0);
-            Long userId = existingRecord.getUserId().longValue();
 
             // 查询商品信息
             KeyboardProductItems product = productItemsService.getProductEntityByProductId(productId);
@@ -354,6 +343,127 @@ public class ApplePurchaseServiceImpl implements ApplePurchaseService {
         // 提供用户消费状态、交付状态等信息，帮助 Apple 评估退款请求
     }
 
+    /**
+     * 处理一次性购买通知（ONE_TIME_CHARGE）
+     * 流程参考 processPurchase：
+     * 1. 验证并解码交易信息
+     * 2. 幂等性检查，避免重复处理
+     * 3. 通过 originalTransactionId 查找用户
+     * 4. 查询商品信息
+     * 5. 保存购买记录
+     * 6. 根据商品类型执行对应逻辑（订阅延期或钱包充值）
+     *
+     * @param notification 解码后的通知载荷
+     */
+    @Override
+    @Transactional(rollbackFor = Exception.class)
+    public void handleOneTimeChargeNotification(ResponseBodyV2DecodedPayload notification) {
+        if (notification == null || notification.getData() == null) {
+            log.warn("ONE_TIME_CHARGE notification data is null");
+            return;
+        }
+
+        try {
+            // 1. 解码交易信息
+            String signedTransactionInfo = notification.getData().getSignedTransactionInfo();
+            if (signedTransactionInfo == null || signedTransactionInfo.isBlank()) {
+                log.warn("No signed transaction info in ONE_TIME_CHARGE notification");
+                return;
+            }
+
+            JWSTransactionDecodedPayload transaction =
+                    signedDataVerifier.verifyAndDecodeTransaction(signedTransactionInfo);
+
+            String transactionId = transaction.getTransactionId();
+            String originalTransactionId = transaction.getOriginalTransactionId();
+            String productId = transaction.getProductId();
+            UUID appAccountToken = transaction.getAppAccountToken();
+            Long userId = userService.selectUserByUUid(appAccountToken.toString());
+
+            log.info("Processing ONE_TIME_CHARGE: transactionId={}, productId={}", transactionId, productId);
+
+            // 2. 幂等性检查：根据交易ID判断是否已处理
+            boolean handled = purchaseRecordsService.lambdaQuery()
+                    .eq(KeyboardUserPurchaseRecords::getTransactionId, transactionId)
+                    .eq(KeyboardUserPurchaseRecords::getStatus, "PAID")
+                    .exists();
+            if (handled) {
+                log.info("ONE_TIME_CHARGE already handled, transactionId={}", transactionId);
+                return;
+            }
+
+//            // 3. 通过 originalTransactionId 查找关联的用户购买记录以获取 userId
+//            List<KeyboardUserPurchaseRecords> records = purchaseRecordsService.lambdaQuery()
+//                    .eq(KeyboardUserPurchaseRecords::getOriginalTransactionId, originalTransactionId)
+//                    .orderByDesc(KeyboardUserPurchaseRecords::getId)
+//                    .last("LIMIT 1")
+//                    .list();
+//
+//            if (records == null || records.isEmpty()) {
+//                log.warn("No purchase record found for ONE_TIME_CHARGE, originalTransactionId={}", originalTransactionId);
+//                return;
+//            }
+
+//            Long userId = records.get(0).getUserId().longValue();
+
+            // 4. 查询商品信息
+            KeyboardProductItems product = productItemsService.getProductEntityByProductId(productId);
+            if (product == null) {
+                log.error("Product not found for ONE_TIME_CHARGE, productId={}", productId);
+                return;
+            }
+            // 5. 构建并保存购买记录
+            KeyboardUserPurchaseRecords purchaseRecord = new KeyboardUserPurchaseRecords();
+            purchaseRecord.setUserId(userId.intValue());
+            purchaseRecord.setProductId(productId);
+            purchaseRecord.setPurchaseQuantity(product.getDurationValue());
+            purchaseRecord.setPrice(product.getPrice());
+            purchaseRecord.setCurrency(product.getCurrency());
+            purchaseRecord.setPurchaseType(product.getType());
+            purchaseRecord.setStatus("PAID");
+            purchaseRecord.setPaymentMethod("APPLE");
+            purchaseRecord.setTransactionId(transactionId);
+            purchaseRecord.setOriginalTransactionId(originalTransactionId);
+            purchaseRecord.setProductIds(new String[]{productId});
+
+            if (transaction.getPurchaseDate() != null) {
+                purchaseRecord.setPurchaseTime(Date.from(Instant.ofEpochMilli(transaction.getPurchaseDate())));
+                purchaseRecord.setPurchaseDate(Date.from(Instant.ofEpochMilli(transaction.getPurchaseDate())));
+            } else {
+                purchaseRecord.setPurchaseTime(new Date());
+            }
+
+            if (transaction.getExpiresDate() != null) {
+                purchaseRecord.setExpiresDate(Date.from(Instant.ofEpochMilli(transaction.getExpiresDate())));
+            }
+
+            if (transaction.getEnvironment() != null) {
+                purchaseRecord.setEnvironment(transaction.getEnvironment().name());
+            }
+
+            purchaseRecordsService.save(purchaseRecord);
+
+            // 6. 根据商品类型执行对应的业务逻辑
+            if ("subscription".equalsIgnoreCase(product.getType())) {
+                Instant expiresInstant = transaction.getExpiresDate() != null
+                        ? Instant.ofEpochMilli(transaction.getExpiresDate()) : null;
+                extendVip(userId, product, expiresInstant);
+            } else if ("in-app-purchase".equalsIgnoreCase(product.getType())) {
+                handleInAppPurchase(userId, product, purchaseRecord.getId());
+            } else {
+                log.warn("未知商品类型, type={}, productId={}", product.getType(), productId);
+            }
+
+            log.info("ONE_TIME_CHARGE processed successfully: userId={}, transactionId={}", userId, transactionId);
+
+        } catch (VerificationException e) {
+            log.error("Failed to verify transaction in ONE_TIME_CHARGE notification", e);
+        } catch (Exception e) {
+            log.error("Error processing ONE_TIME_CHARGE notification", e);
+            throw new BusinessException(ErrorCode.OPERATION_ERROR, "处理一次性购买通知失败");
+        }
+    }
+
     /**
      * 处理成功的续订
      * 创建新的购买记录并延长VIP有效期
@@ -673,7 +783,7 @@ public class ApplePurchaseServiceImpl implements ApplePurchaseService {
                 (short) 2, // 交易类型：2-苹果内购充值
                 before,
                 after,
-                "Apple 充值: " + product.getProductId()
+                  product.getName()
         );
         
         // 8. 记录充值成功日志

src/main/java/com/yolo/keyborad/service/impl/AppleReceiptServiceImpl.java

@@ -155,6 +155,7 @@ public class AppleReceiptServiceImpl implements AppleReceiptService {
 
                 // 续订偏好变更通知
                 case DID_CHANGE_RENEWAL_PREF:
+
                 case DID_CHANGE_RENEWAL_STATUS:
                 case PRICE_INCREASE:
                     applePurchaseService.handleRenewalPreferenceChange(notification);
@@ -165,9 +166,14 @@ public class AppleReceiptServiceImpl implements AppleReceiptService {
                     applePurchaseService.handleConsumptionRequest(notification);
                     break;
 
+                // 一次性购买通知
+                case ONE_TIME_CHARGE:
+                    applePurchaseService.handleOneTimeChargeNotification(notification);
+                    break;
+
                 // 其他通知类型（记录但不处理）
                 case EXTERNAL_PURCHASE_TOKEN:
-                case ONE_TIME_CHARGE:
+
                 case REVOKE:
                 case TEST:
                     log.info("Received notification type {} - no action required", type);

src/main/java/com/yolo/keyborad/service/impl/ChatServiceImpl.java

@@ -413,7 +413,7 @@ public class ChatServiceImpl implements ChatService {
         if (companion.getStatus() == null || companion.getStatus() != 1) {
             throw new BusinessException(ErrorCode.PARAMS_ERROR, "AI陪聊角色已下线");
         }
-        String systemPrompt = companion.getSystemPrompt();
+        String systemPrompt = appConfig.getLlmConfig().getCompanionSystemPrompt() +  companion.getSystemPrompt();
         String voiceId = companion.getVoiceId();
 
         // 获取最近20条聊天记录作为上下文
@@ -538,7 +538,7 @@ public class ChatServiceImpl implements ChatService {
 
             // 1. TTS 转换
             long ttsStart = System.currentTimeMillis();
-            TextToSpeechVO ttsResult = elevenLabsService.textToSpeechWithTimestamps(text, voiceId);
+            TextToSpeechVO ttsResult = elevenLabsService.textToSpeechWithTimestamps(text.replaceAll("\\(.*?\\)", ""), voiceId);
             long ttsDuration = System.currentTimeMillis() - ttsStart;
             log.info("TTS 完成, audioId: {}, 耗时: {}ms", audioId, ttsDuration);
 

src/main/java/com/yolo/keyborad/service/impl/GooglePlayBillingServiceImpl.java

@@ -0,0 +1,293 @@
+package com.yolo.keyborad.service.impl;
+
+import com.yolo.keyborad.common.ErrorCode;
+import com.yolo.keyborad.config.GooglePlayProperties;
+import com.yolo.keyborad.exception.BusinessException;
+import com.yolo.keyborad.googleplay.GooglePlayApiClient;
+import com.yolo.keyborad.googleplay.GooglePlayApiException;
+import com.yolo.keyborad.googleplay.GooglePlayConstants;
+import com.yolo.keyborad.googleplay.GooglePlayNotificationSupport;
+import com.yolo.keyborad.googleplay.GooglePlayPubSubAuthService;
+import com.yolo.keyborad.googleplay.GooglePlayRtdnEventService;
+import com.yolo.keyborad.googleplay.GooglePlayStateService;
+import com.yolo.keyborad.googleplay.model.GooglePlayPurchaseSnapshot;
+import com.yolo.keyborad.googleplay.model.GooglePlaySyncCommand;
+import com.yolo.keyborad.googleplay.model.GooglePlaySyncResult;
+import com.yolo.keyborad.model.dto.googleplay.GooglePlayPubSubPushRequest;
+import com.yolo.keyborad.model.dto.googleplay.GooglePlayPurchaseVerifyReq;
+import com.yolo.keyborad.model.entity.googleplay.GooglePlayPurchaseToken;
+import com.yolo.keyborad.model.entity.googleplay.GooglePlayRtdnEvent;
+import com.yolo.keyborad.model.vo.googleplay.GooglePlayPurchaseVerifyResp;
+import com.yolo.keyborad.service.GooglePlayBillingService;
+import jakarta.servlet.http.HttpServletRequest;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+
+import java.util.Date;
+import java.util.Locale;
+
+@Slf4j
+@Service
+@RequiredArgsConstructor
+public class GooglePlayBillingServiceImpl implements GooglePlayBillingService {
+
+    private final GooglePlayProperties properties;
+    private final GooglePlayApiClient apiClient;
+    private final GooglePlayPubSubAuthService pubSubAuthService;
+    private final GooglePlayStateService stateService;
+    private final GooglePlayNotificationSupport notificationSupport;
+    private final GooglePlayRtdnEventService rtdnEventService;
+
+    @Override
+    public GooglePlayPurchaseVerifyResp verifyPurchase(Long userId, GooglePlayPurchaseVerifyReq req) {
+        ensureEnabled();
+        validateVerifyRequest(req);
+        String packageName = resolvePackageName(req.getPackageName());
+        String productType = normalizeProductType(req.getProductType());
+        GooglePlayPurchaseSnapshot snapshot = fetchSnapshot(packageName, productType, req.getPurchaseToken());
+//        validateProduct(snapshot, req.getProductId());
+        verifyExternalAccount(userId, snapshot);
+        GooglePlaySyncCommand command = GooglePlaySyncCommand.builder()
+                .userId(userId)
+                .packageName(packageName)
+                .productId(snapshot.getProductId())
+                .productType(productType)
+                .purchaseToken(req.getPurchaseToken())
+                .source("CLIENT")
+                .eventType("CLIENT_VERIFY")
+                .notificationName("CLIENT_VERIFY")
+                .eventTime(new Date())
+                .build();
+        GooglePlaySyncResult result = stateService.sync(command, snapshot);
+        finalizePurchase(snapshot, result);
+        return buildResponse(result);
+    }
+
+    @Override
+    public void handleRtdn(HttpServletRequest request, GooglePlayPubSubPushRequest pushRequest) {
+        ensureEnabled();
+        validatePushRequest(pushRequest);
+        pubSubAuthService.verify(request, pushRequest);
+        GooglePlayPubSubPushRequest.DeveloperNotification notification = notificationSupport.decode(pushRequest);
+        GooglePlayRtdnEvent event = rtdnEventService.upsertEvent(pushRequest, notification);
+        if (GooglePlayConstants.EVENT_PROCESSED.equals(event.getStatus())) {
+            return;
+        }
+        if (notification.getTestNotification() != null) {
+            rtdnEventService.markIgnored(event);
+            return;
+        }
+        GooglePlaySyncCommand command = notificationSupport.buildCommand(
+                pushRequest,
+                notification,
+                resolvePackageName(notification.getPackageName())
+        );
+        try {
+            GooglePlayPurchaseSnapshot snapshot = fetchSnapshotForNotification(command);
+            GooglePlayPurchaseSnapshot effectiveSnapshot = applyVoidedStateIfNeeded(snapshot, notification);
+            Long userId = resolveUserId(command.getPurchaseToken(), effectiveSnapshot);
+            GooglePlaySyncResult result = stateService.sync(command.toBuilder().userId(userId).build(), effectiveSnapshot);
+            finalizePurchase(effectiveSnapshot, result);
+            syncLinkedTokenIfNeeded(command, result, effectiveSnapshot);
+            rtdnEventService.markProcessed(event);
+        } catch (Exception e) {
+            rtdnEventService.markFailed(event, e);
+            throw e;
+        }
+    }
+
+    private void ensureEnabled() {
+        if (!properties.isEnabled()) {
+            throw new BusinessException(ErrorCode.GOOGLE_PLAY_NOT_ENABLED);
+        }
+    }
+
+    private void validateVerifyRequest(GooglePlayPurchaseVerifyReq req) {
+        if (req == null || req.getPurchaseToken() == null || req.getPurchaseToken().isBlank()) {
+            throw new BusinessException(ErrorCode.PARAMS_ERROR, "purchaseToken 不能为空");
+        }
+        if (req.getProductType() == null || req.getProductType().isBlank()) {
+            throw new BusinessException(ErrorCode.PARAMS_ERROR, "productType 不能为空");
+        }
+    }
+
+    private void validatePushRequest(GooglePlayPubSubPushRequest pushRequest) {
+        if (pushRequest == null || pushRequest.getMessage() == null) {
+            throw new BusinessException(ErrorCode.PARAMS_ERROR, "Pub/Sub body 不能为空");
+        }
+        if (pushRequest.getMessage().getMessageId() == null || pushRequest.getMessage().getMessageId().isBlank()) {
+            throw new BusinessException(ErrorCode.PARAMS_ERROR, "messageId 不能为空");
+        }
+        if (pushRequest.getMessage().getData() == null || pushRequest.getMessage().getData().isBlank()) {
+            throw new BusinessException(ErrorCode.PARAMS_ERROR, "data 不能为空");
+        }
+    }
+
+    private GooglePlayPurchaseSnapshot fetchSnapshot(String packageName, String productType, String purchaseToken) {
+        if (GooglePlayConstants.PRODUCT_TYPE_SUBSCRIPTION.equals(productType)) {
+            return apiClient.getSubscription(packageName, purchaseToken);
+        }
+        return apiClient.getOneTimeProduct(packageName, purchaseToken);
+    }
+
+    private GooglePlayPurchaseSnapshot fetchSnapshotForNotification(GooglePlaySyncCommand command) {
+        try {
+            return fetchSnapshot(command.getPackageName(), command.getProductType(), command.getPurchaseToken());
+        } catch (GooglePlayApiException e) {
+            if (e.getStatusCode() != 404 || !GooglePlayConstants.EVENT_TYPE_VOIDED.equals(command.getEventType())) {
+                throw e;
+            }
+            GooglePlayPurchaseToken localToken = stateService.findToken(command.getPurchaseToken());
+            return GooglePlayPurchaseSnapshot.builder()
+                    .packageName(command.getPackageName())
+                    .productId(localToken == null ? command.getProductId() : localToken.getProductId())
+                    .productType(localToken == null ? command.getProductType() : localToken.getProductType())
+                    .purchaseToken(command.getPurchaseToken())
+                    .orderKey(localToken == null || localToken.getLatestOrderKey() == null
+                            ? "TOKEN:" + command.getPurchaseToken()
+                            : localToken.getLatestOrderKey())
+                    .googleOrderId(localToken == null ? null : localToken.getLatestOrderId())
+                    .state(GooglePlayConstants.STATE_UNKNOWN)
+                    .acknowledgementState(GooglePlayConstants.ACK_PENDING)
+                    .consumptionState(GooglePlayConstants.CONSUMPTION_PENDING)
+                    .accessGranted(false)
+                    .externalAccountId(localToken == null ? null : localToken.getExternalAccountId())
+                    .lastSyncedAt(new Date())
+                    .rawResponse("{}")
+                    .build();
+        }
+    }
+
+    private void validateProduct(GooglePlayPurchaseSnapshot snapshot, String requestProductId) {
+        if (requestProductId == null || requestProductId.isBlank()) {
+            return;
+        }
+        if (!requestProductId.equals(snapshot.getBasePlanId())) {
+            throw new BusinessException(ErrorCode.GOOGLE_PLAY_PURCHASE_MISMATCH, "productId 与 Google 返回不一致");
+        }
+    }
+
+    private void verifyExternalAccount(Long userId, GooglePlayPurchaseSnapshot snapshot) {
+        String externalAccountId = snapshot.getExternalAccountId();
+        if ((externalAccountId == null || externalAccountId.isBlank()) && properties.isRequireObfuscatedAccountId()) {
+            throw new BusinessException(ErrorCode.GOOGLE_PLAY_PURCHASE_MISMATCH, "缺少 obfuscatedExternalAccountId");
+        }
+        if (externalAccountId == null || externalAccountId.isBlank()) {
+            return;
+        }
+        if (!String.valueOf(userId).equals(externalAccountId)) {
+            throw new BusinessException(ErrorCode.GOOGLE_PLAY_PURCHASE_MISMATCH, "购买用户与当前登录用户不一致");
+        }
+    }
+
+    private GooglePlayPurchaseVerifyResp buildResponse(GooglePlaySyncResult result) {
+        GooglePlayPurchaseVerifyResp resp = new GooglePlayPurchaseVerifyResp();
+        resp.setUserId(result.getOrder().getUserId());
+        resp.setProductId(result.getOrder().getProductId());
+        resp.setProductType(result.getOrder().getProductType());
+        resp.setPurchaseToken(result.getOrder().getPurchaseToken());
+        resp.setOrderId(result.getOrder().getGoogleOrderId());
+        resp.setOrderState(result.getOrder().getOrderState());
+        resp.setEntitlementState(result.getEntitlement() == null ? null : result.getEntitlement().getState());
+        resp.setDeliveryStatus(result.getOrder().getDeliveryStatus());
+        resp.setAccessGranted(result.getEntitlement() != null && Boolean.TRUE.equals(result.getEntitlement().getActive()));
+        resp.setAcknowledged(GooglePlayConstants.ACK_ACKNOWLEDGED.equals(result.getOrder().getAcknowledgementState()));
+        resp.setConsumed(GooglePlayConstants.CONSUMPTION_CONSUMED.equals(result.getOrder().getConsumptionState()));
+        resp.setExpiryTime(result.getOrder().getEntitlementEndTime());
+        resp.setLastSyncedAt(result.getOrder().getLastSyncedAt());
+        return resp;
+    }
+
+    private GooglePlayPurchaseSnapshot applyVoidedStateIfNeeded(GooglePlayPurchaseSnapshot snapshot,
+                                                                GooglePlayPubSubPushRequest.DeveloperNotification notification) {
+        if (notification.getVoidedPurchaseNotification() == null) {
+            return snapshot;
+        }
+        String productType = notificationSupport.normalizeVoidedProductType(
+                notification.getVoidedPurchaseNotification().getProductType()
+        );
+        String state = GooglePlayConstants.PRODUCT_TYPE_SUBSCRIPTION.equals(productType)
+                ? GooglePlayConstants.STATE_REVOKED
+                : GooglePlayConstants.STATE_REFUNDED;
+        return snapshot.toBuilder().state(state).accessGranted(false).build();
+    }
+
+    private void finalizePurchase(GooglePlayPurchaseSnapshot snapshot, GooglePlaySyncResult result) {
+        if (result.isConsumeRequired()) {
+            try {
+                apiClient.consumeProduct(snapshot.getPackageName(), snapshot.getProductId(), snapshot.getPurchaseToken());
+                stateService.markAcknowledged(snapshot.getPurchaseToken(), snapshot.getOrderKey());
+                stateService.markConsumed(snapshot.getPurchaseToken(), snapshot.getOrderKey());
+            } catch (Exception e) {
+                log.warn("Google Play consume retry pending, orderKey={}", snapshot.getOrderKey(), e);
+            }
+            return;
+        }
+        if (!result.isAcknowledgeRequired()) {
+            return;
+        }
+        try {
+            acknowledge(snapshot);
+            stateService.markAcknowledged(snapshot.getPurchaseToken(), snapshot.getOrderKey());
+        } catch (Exception e) {
+            log.warn("Google Play acknowledge retry pending, orderKey={}", snapshot.getOrderKey(), e);
+        }
+    }
+
+    private void acknowledge(GooglePlayPurchaseSnapshot snapshot) {
+        if (GooglePlayConstants.PRODUCT_TYPE_SUBSCRIPTION.equals(snapshot.getProductType())) {
+            apiClient.acknowledgeSubscription(snapshot.getPackageName(), snapshot.getProductId(), snapshot.getPurchaseToken());
+            return;
+        }
+        apiClient.acknowledgeProduct(snapshot.getPackageName(), snapshot.getProductId(), snapshot.getPurchaseToken());
+    }
+
+    private void syncLinkedTokenIfNeeded(GooglePlaySyncCommand command,
+                                         GooglePlaySyncResult result,
+                                         GooglePlayPurchaseSnapshot snapshot) {
+        if (result.getLinkedPurchaseTokenToSync() == null || result.getLinkedPurchaseTokenToSync().isBlank()) {
+            return;
+        }
+        GooglePlayPurchaseSnapshot linkedSnapshot = apiClient.getSubscription(command.getPackageName(), result.getLinkedPurchaseTokenToSync());
+        GooglePlaySyncCommand linkedCommand = command.toBuilder()
+                .purchaseToken(result.getLinkedPurchaseTokenToSync())
+                .productType(GooglePlayConstants.PRODUCT_TYPE_SUBSCRIPTION)
+                .productId(linkedSnapshot.getProductId())
+                .userId(resolveUserId(result.getLinkedPurchaseTokenToSync(), linkedSnapshot))
+                .notificationName("LINKED_TOKEN_SYNC")
+                .build();
+        GooglePlaySyncResult linkedResult = stateService.sync(linkedCommand, linkedSnapshot);
+        finalizePurchase(linkedSnapshot, linkedResult);
+    }
+
+    private Long resolveUserId(String purchaseToken, GooglePlayPurchaseSnapshot snapshot) {
+        GooglePlayPurchaseToken localToken = stateService.findToken(purchaseToken);
+        if (localToken != null && localToken.getUserId() != null) {
+            return localToken.getUserId();
+        }
+        String externalAccountId = snapshot.getExternalAccountId();
+        if (externalAccountId == null || !externalAccountId.matches("\\d+")) {
+            return null;
+        }
+        return Long.parseLong(externalAccountId);
+    }
+
+    private String resolvePackageName(String packageName) {
+        if (packageName != null && !packageName.isBlank()) {
+            return packageName;
+        }
+        if (properties.getPackageName() == null || properties.getPackageName().isBlank()) {
+            throw new BusinessException(ErrorCode.GOOGLE_PLAY_PACKAGE_NAME_MISSING);
+        }
+        return properties.getPackageName();
+    }
+
+    private String normalizeProductType(String rawType) {
+        String lowerCase = rawType.toLowerCase(Locale.ROOT);
+        if (lowerCase.contains("sub")) {
+            return GooglePlayConstants.PRODUCT_TYPE_SUBSCRIPTION;
+        }
+        return GooglePlayConstants.PRODUCT_TYPE_ONE_TIME;
+    }
+}

src/main/java/com/yolo/keyborad/service/impl/KeyboardAiCompanionServiceImpl.java

@@ -24,6 +24,7 @@ import com.yolo.keyborad.service.KeyboardAiCompanionService;
 import org.springframework.util.StringUtils;
 
 import java.util.Collections;
+import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
@@ -36,6 +37,8 @@ import java.util.stream.Collectors;
 @Service
 public class KeyboardAiCompanionServiceImpl extends ServiceImpl<KeyboardAiCompanionMapper, KeyboardAiCompanion> implements KeyboardAiCompanionService {
 
+    private static final String DEFAULT_FALLBACK_LOCALE = "en";
+
     @Resource
     private KeyboardAiCompanionLikeService companionLikeService;
 
@@ -321,11 +324,36 @@ public class KeyboardAiCompanionServiceImpl extends ServiceImpl<KeyboardAiCompan
         vo.setName(i18n.getName());
         vo.setShortDesc(i18n.getShortDesc());
         vo.setIntroText(i18n.getIntroText());
+        vo.setPrologue(i18n.getPrologue());
+        vo.setPrologueAudio(i18n.getPrologueAudio());
         return vo;
     }
 
     private Map<Long, KeyboardAiCompanionI18n> getCompanionI18nMap(List<Long> companionIds, String acceptLanguage) {
         String locale = RequestLocaleUtils.resolveLanguage(acceptLanguage);
+        if (companionIds == null || companionIds.isEmpty() || !StringUtils.hasText(locale)) {
+            return Collections.emptyMap();
+        }
+        Map<Long, KeyboardAiCompanionI18n> requestedLocaleMap = queryI18nMap(companionIds, locale);
+        if (requestedLocaleMap.size() == companionIds.size() || DEFAULT_FALLBACK_LOCALE.equalsIgnoreCase(locale)) {
+            return requestedLocaleMap;
+        }
+        List<Long> missingCompanionIds = companionIds.stream()
+                .filter(companionId -> !requestedLocaleMap.containsKey(companionId))
+                .toList();
+        if (missingCompanionIds.isEmpty()) {
+            return requestedLocaleMap;
+        }
+        Map<Long, KeyboardAiCompanionI18n> fallbackMap = queryI18nMap(missingCompanionIds, DEFAULT_FALLBACK_LOCALE);
+        if (fallbackMap.isEmpty()) {
+            return requestedLocaleMap;
+        }
+        Map<Long, KeyboardAiCompanionI18n> mergedMap = new LinkedHashMap<>(requestedLocaleMap);
+        fallbackMap.forEach(mergedMap::putIfAbsent);
+        return mergedMap;
+    }
+
+    private Map<Long, KeyboardAiCompanionI18n> queryI18nMap(List<Long> companionIds, String locale) {
         if (companionIds == null || companionIds.isEmpty() || !StringUtils.hasText(locale)) {
             return Collections.emptyMap();
         }

src/main/java/com/yolo/keyborad/service/impl/KeyboardCharacterServiceImpl.java

@@ -42,6 +42,7 @@ import java.util.stream.Stream;
 @Service
 public class KeyboardCharacterServiceImpl extends ServiceImpl<KeyboardCharacterMapper, KeyboardCharacter> implements KeyboardCharacterService{
 
+    private static final String DEFAULT_FALLBACK_LOCALE = "en";
     private static final String CHARACTER_CACHE_KEY_PREFIX = "character:";
     private static final String CHARACTER_LIST_CACHE_KEY = "character:list:all";
     private static final String CHARACTER_TAG_CACHE_KEY_PREFIX = "character:list:tag:";
@@ -158,6 +159,9 @@ public class KeyboardCharacterServiceImpl extends ServiceImpl<KeyboardCharacterM
     public List<KeyboardUserCharacterVO> selectListByUserId(String acceptLanguage) {
         long loginId = StpUtil.getLoginIdAsLong();
         String locale = RequestLocaleUtils.resolveLanguage(acceptLanguage);
+        if (!StringUtils.hasText(locale)) {
+            locale = DEFAULT_FALLBACK_LOCALE;
+        }
         return keyboardUserCharacterMapper.selectByUserId(loginId, locale);
     }
 
@@ -272,7 +276,7 @@ public class KeyboardCharacterServiceImpl extends ServiceImpl<KeyboardCharacterM
         KeyboardUserCharacterAddDTO keyboardUserCharacterAddDTO = new KeyboardUserCharacterAddDTO();
         
         // 获取所有人设列表（未登录状态），并限制取前5个
-        Stream<KeyboardCharacterRespVO> limit = selectListWithNotLoginRank(null).stream().limit(5);
+        Stream<KeyboardCharacterRespVO> limit = selectListWithNotLoginRank(null).stream();
         
         // 遍历前5个人设，为用户添加默认人设
         limit.forEach(character -> {
@@ -353,6 +357,29 @@ public class KeyboardCharacterServiceImpl extends ServiceImpl<KeyboardCharacterM
         if (characterIds == null || characterIds.isEmpty()) {
             return Collections.emptyMap();
         }
+        Map<Long, KeyboardCharacterI18n> requestedLocaleMap = queryI18nMap(characterIds, locale);
+        if (requestedLocaleMap.size() == characterIds.size() || DEFAULT_FALLBACK_LOCALE.equalsIgnoreCase(locale)) {
+            return requestedLocaleMap;
+        }
+        List<Long> missingCharacterIds = characterIds.stream()
+                .filter(characterId -> !requestedLocaleMap.containsKey(characterId))
+                .toList();
+        if (missingCharacterIds.isEmpty()) {
+            return requestedLocaleMap;
+        }
+        Map<Long, KeyboardCharacterI18n> fallbackMap = queryI18nMap(missingCharacterIds, DEFAULT_FALLBACK_LOCALE);
+        if (fallbackMap.isEmpty()) {
+            return requestedLocaleMap;
+        }
+        Map<Long, KeyboardCharacterI18n> mergedMap = new LinkedHashMap<>(requestedLocaleMap);
+        fallbackMap.forEach(mergedMap::putIfAbsent);
+        return mergedMap;
+    }
+
+    private Map<Long, KeyboardCharacterI18n> queryI18nMap(List<Long> characterIds, String locale) {
+        if (characterIds == null || characterIds.isEmpty() || !StringUtils.hasText(locale)) {
+            return Collections.emptyMap();
+        }
         List<KeyboardCharacterI18n> i18nList = keyboardCharacterI18nMapper.selectList(
                 new LambdaQueryWrapper<KeyboardCharacterI18n>()
                         .eq(KeyboardCharacterI18n::getLocale, locale)

src/main/java/com/yolo/keyborad/service/impl/KeyboardProductItemsServiceImpl.java

@@ -17,45 +17,41 @@ public class KeyboardProductItemsServiceImpl extends ServiceImpl<KeyboardProduct
 
 
     /**
-     * 根据ID获取产品详情
+     * 根据ID和平台获取产品详情
-     * 
+     *
      * @param id 产品ID
-     * @return 产品详情响应对象，如果ID为空或未找到产品则返回null
+     * @return 产品详情响应对象，如果未找到产品则返回null
      */
     @Override
     public KeyboardProductItemRespVO getProductDetailById(Long id) {
-        // 参数校验：ID不能为空
         if (id == null) {
             return null;
         }
-        
+
-        // 根据ID查询产品信息
+        KeyboardProductItems item = this.lambdaQuery()
-        KeyboardProductItems item = this.getById(id);
+                .eq(KeyboardProductItems::getId, id)
-        
+                .one();
-        // 将实体对象转换为响应VO对象并返回
+
         return item == null ? null : BeanUtil.copyProperties(item, KeyboardProductItemRespVO.class);
     }
 
 
     /**
-     * 根据产品ID获取产品详情
+     * 根据产品ID和平台获取产品详情
-     * 
+     *
      * @param productId 产品ID
-     * @return 产品详情响应对象，如果产品ID为空或未找到产品则返回null
+     * @return 产品详情响应对象，如果未找到产品则返回null
      */
     @Override
     public KeyboardProductItemRespVO getProductDetailByProductId(String productId) {
-        // 参数校验：产品ID不能为空
         if (productId == null || productId.isBlank()) {
             return null;
         }
-        
+
-        // 根据产品ID查询产品信息
         KeyboardProductItems item = this.lambdaQuery()
                 .eq(KeyboardProductItems::getProductId, productId)
                 .one();
-        
+
-        // 将实体对象转换为响应VO对象并返回
         return item == null ? null : BeanUtil.copyProperties(item, KeyboardProductItemRespVO.class);
     }
 
@@ -77,14 +73,19 @@ public class KeyboardProductItemsServiceImpl extends ServiceImpl<KeyboardProduct
      * @return 产品详情响应列表，按ID升序排列
      */
     @Override
-    public java.util.List<KeyboardProductItemRespVO> listProductsByType(String type) {
+    public java.util.List<KeyboardProductItemRespVO> listProductsByType(String type, String platform) {
         // 创建Lambda查询构造器
         var query = this.lambdaQuery();
-        
+
         // 如果类型参数有效且不是"all"，则添加类型过滤条件
         if (type != null && !type.isBlank() && !"all".equalsIgnoreCase(type)) {
             query.eq(KeyboardProductItems::getType, type);
         }
+
+        // 根据平台过滤商品
+        if (platform != null && !platform.isBlank()) {
+            query.eq(KeyboardProductItems::getPlatform, platform);
+        }
         
         // 执行查询，按ID升序排列
         java.util.List<KeyboardProductItems> items = query

src/main/java/com/yolo/keyborad/service/impl/KeyboardThemePurchaseServiceImpl.java

@@ -133,7 +133,7 @@ public class KeyboardThemePurchaseServiceImpl extends ServiceImpl<KeyboardThemeP
                 (short) 1,                                      // 交易类型：1-购买主题
                 beforeBalance,                                   // 交易前余额
                 afterBalance,                                    // 交易后余额
-                "购买主题: " + theme.getThemeName()             // 交易备注
+                theme.getThemeName()             // 交易备注
         );
 
         // 8. 更新购买记录的交易ID

src/main/java/com/yolo/keyborad/service/impl/KeyboardUserPurchaseRecordsServiceImpl.java

@@ -1,8 +1,7 @@
 package com.yolo.keyborad.service.impl;
 
 import org.springframework.stereotype.Service;
-import org.springframework.beans.factory.annotation.Autowired;
+import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
-import java.util.List;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import com.yolo.keyborad.mapper.KeyboardUserPurchaseRecordsMapper;
 import com.yolo.keyborad.model.entity.KeyboardUserPurchaseRecords;
@@ -11,8 +10,19 @@ import com.yolo.keyborad.service.KeyboardUserPurchaseRecordsService;
 * @author: ziin
 * @date: 2025/12/12 15:16
 */
-    
+
 @Service
 public class KeyboardUserPurchaseRecordsServiceImpl extends ServiceImpl<KeyboardUserPurchaseRecordsMapper, KeyboardUserPurchaseRecords> implements KeyboardUserPurchaseRecordsService{
 
+    @Override
+    public boolean checkPurchaseExists(String transactionId, String originalTransactionId) {
+        LambdaQueryWrapper<KeyboardUserPurchaseRecords> queryWrapper = new LambdaQueryWrapper<>();
+        if (transactionId != null && !transactionId.isBlank()) {
+            queryWrapper.eq(KeyboardUserPurchaseRecords::getTransactionId, transactionId);
+        }
+        if (originalTransactionId != null && !originalTransactionId.isBlank()) {
+            queryWrapper.eq(KeyboardUserPurchaseRecords::getOriginalTransactionId, originalTransactionId);
+        }
+        return exists(queryWrapper);
+    }
 }

src/main/java/com/yolo/keyborad/service/impl/TagServiceImpl.java

@@ -16,6 +16,7 @@ import org.springframework.stereotype.Service;
 import org.springframework.util.StringUtils;
 
 import java.util.Collections;
+import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.stream.Collectors;
@@ -27,6 +28,8 @@ import java.util.stream.Collectors;
 @Service
 public class TagServiceImpl extends ServiceImpl<KeyboardTagMapper, KeyboardTag> implements TagService {
 
+    private static final String DEFAULT_FALLBACK_LOCALE = "en";
+
     @Resource
     private KeyboardTagMapper keyboardTagMapper;
 
@@ -63,6 +66,29 @@ public class TagServiceImpl extends ServiceImpl<KeyboardTagMapper, KeyboardTag>
         if (tagIds == null || tagIds.isEmpty()) {
             return Collections.emptyMap();
         }
+        Map<Integer, KeyboardTagI18n> requestedLocaleMap = queryI18nMap(tagIds, locale);
+        if (requestedLocaleMap.size() == tagIds.size() || DEFAULT_FALLBACK_LOCALE.equalsIgnoreCase(locale)) {
+            return requestedLocaleMap;
+        }
+        List<Integer> missingTagIds = tagIds.stream()
+                .filter(tagId -> !requestedLocaleMap.containsKey(tagId))
+                .toList();
+        if (missingTagIds.isEmpty()) {
+            return requestedLocaleMap;
+        }
+        Map<Integer, KeyboardTagI18n> fallbackMap = queryI18nMap(missingTagIds, DEFAULT_FALLBACK_LOCALE);
+        if (fallbackMap.isEmpty()) {
+            return requestedLocaleMap;
+        }
+        Map<Integer, KeyboardTagI18n> mergedMap = new LinkedHashMap<>(requestedLocaleMap);
+        fallbackMap.forEach(mergedMap::putIfAbsent);
+        return mergedMap;
+    }
+
+    private Map<Integer, KeyboardTagI18n> queryI18nMap(List<Integer> tagIds, String locale) {
+        if (tagIds == null || tagIds.isEmpty() || !StringUtils.hasText(locale)) {
+            return Collections.emptyMap();
+        }
         List<KeyboardTagI18n> i18nList = keyboardTagI18nMapper.selectList(
                 new LambdaQueryWrapper<KeyboardTagI18n>()
                         .in(KeyboardTagI18n::getTagId, tagIds)

src/main/java/com/yolo/keyborad/service/impl/UserServiceImpl.java

@@ -2,6 +2,7 @@ package com.yolo.keyborad.service.impl;
 
 import cn.dev33.satoken.stp.StpUtil;
 import cn.hutool.core.bean.BeanUtil;
+import cn.hutool.core.lang.UUID;
 import cn.hutool.core.util.IdUtil;
 import cn.hutool.core.util.RandomUtil;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
@@ -26,6 +27,8 @@ import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
 import java.math.BigDecimal;
+import java.time.Instant;
+import java.time.temporal.ChronoUnit;
 import java.util.Date;
 import com.yolo.keyborad.service.impl.user.UserInviteCodeBinder;
 import com.yolo.keyborad.service.impl.user.UserMailVerificationHandler;
@@ -89,8 +92,26 @@ public class UserServiceImpl extends ServiceImpl<KeyboardUserMapper, KeyboardUse
                 .eq(KeyboardUser::getStatus, false));
     }
 
+    private static final int ACCOUNT_REUSE_COOLDOWN_DAYS = 7;
+
+    private void ensureSubjectIdNotRecentlyCancelled(String sub) {
+        Date cooldownStart = Date.from(Instant.now().minus(ACCOUNT_REUSE_COOLDOWN_DAYS, ChronoUnit.DAYS));
+        KeyboardUser recentlyDeleted = keyboardUserMapper.selectOne(
+                new LambdaQueryWrapper<KeyboardUser>()
+                        .eq(KeyboardUser::getSubjectId, sub)
+                        .eq(KeyboardUser::getDeleted, true)
+                        .gt(KeyboardUser::getDeletedAt, cooldownStart)
+                        .last("LIMIT 1")
+        );
+        if (recentlyDeleted != null) {
+            throw new BusinessException(ErrorCode.ACCOUNT_RECENTLY_CANCELLED);
+        }
+    }
+
     @Override
     public KeyboardUser createUserWithSubjectId(String sub) {
+        ensureSubjectIdNotRecentlyCancelled(sub);
+
         KeyboardUser keyboardUser = buildNewUserWithSubjectId(sub);
         keyboardUserMapper.insert(keyboardUser);
         keyboardCharacterService.addDefaultUserCharacter(keyboardUser.getId());
@@ -198,11 +219,20 @@ public class UserServiceImpl extends ServiceImpl<KeyboardUserMapper, KeyboardUse
         return true;
     }
 
+    @Override
+    public Long selectUserByUUid(String uuid) {
+        KeyboardUser keyboardUserDB = keyboardUserMapper.selectOne(
+                new LambdaQueryWrapper<KeyboardUser>()
+                        .eq(KeyboardUser::getUuid, uuid));
+        return keyboardUserDB.getId();
+    }
+
     private KeyboardUser buildNewUserWithSubjectId(String sub) {
         KeyboardUser keyboardUser = new KeyboardUser();
         keyboardUser.setSubjectId(sub);
         keyboardUser.setUid(IdUtil.getSnowflake().nextId());
         keyboardUser.setNickName("User_" + RandomUtil.randomString(6));
+        keyboardUser.setUuid(IdUtil.randomUUID());
         return keyboardUser;
     }
 

src/main/java/com/yolo/keyborad/service/impl/user/UserRegistrationHandler.java

@@ -18,6 +18,8 @@ import com.yolo.keyborad.service.KeyboardUserQuotaTotalService;
 import com.yolo.keyborad.service.KeyboardUserWalletService;
 import com.yolo.keyborad.utils.RedisUtil;
 import java.math.BigDecimal;
+import java.time.Instant;
+import java.time.temporal.ChronoUnit;
 import java.util.Date;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.security.crypto.password.PasswordEncoder;
@@ -33,6 +35,7 @@ import org.springframework.transaction.annotation.Transactional;
 public class UserRegistrationHandler {
 
     private static final String USER_CODE_PREFIX = "user:";
+    private static final int ACCOUNT_REUSE_COOLDOWN_DAYS = 7;
 
     private final KeyboardUserMapper keyboardUserMapper;
     private final PasswordEncoder passwordEncoder;
@@ -91,6 +94,24 @@ public class UserRegistrationHandler {
         if (userMail != null) {
             throw new BusinessException(ErrorCode.USER_HAS_EXISTED);
         }
+
+        ensureNotRecentlyCancelled(
+                new LambdaQueryWrapper<KeyboardUser>()
+                        .eq(KeyboardUser::getEmail, mailAddress)
+        );
+    }
+
+    private void ensureNotRecentlyCancelled(LambdaQueryWrapper<KeyboardUser> baseQuery) {
+        Date cooldownStart = Date.from(Instant.now().minus(ACCOUNT_REUSE_COOLDOWN_DAYS, ChronoUnit.DAYS));
+        KeyboardUser recentlyDeleted = keyboardUserMapper.selectOne(
+                baseQuery
+                        .eq(KeyboardUser::getDeleted, true)
+                        .gt(KeyboardUser::getDeletedAt, cooldownStart)
+                        .last("LIMIT 1")
+        );
+        if (recentlyDeleted != null) {
+            throw new BusinessException(ErrorCode.ACCOUNT_RECENTLY_CANCELLED);
+        }
     }
 
     private void validatePasswords(UserRegisterDTO userRegisterDTO) {
@@ -118,6 +139,7 @@ public class UserRegistrationHandler {
         keyboardUser.setEmail(userRegisterDTO.getMailAddress());
         keyboardUser.setGender(userRegisterDTO.getGender());
         keyboardUser.setEmailVerified(true);
+        keyboardUser.setUuid(IdUtil.randomUUID());
         return keyboardUser;
     }
 

src/main/resources/application-dev.yml

@@ -52,6 +52,21 @@ apple:
       - "classpath:AppleRootCA-G2.cer"
       - "classpath:AppleRootCA-G3.cer"
 
+google:
+  play:
+    enabled: true
+    package-name: "com.boshan.key.of.love"
+    service-account-key-path: "classpath:keyboard-490601-ee503a425cc4.json"
+    oauth-token-uri: "https://oauth2.googleapis.com/token"
+    android-publisher-scope: "https://www.googleapis.com/auth/androidpublisher"
+    pubsub-token-info-uri: "https://oauth2.googleapis.com/tokeninfo"
+    validate-pubsub-jwt: true
+    require-obfuscated-account-id: false
+    pubsub:
+      expected-topic: "projects/keyboard-490601/topics/keyboard_topic"
+      expected-subscription: "projects/keyboard-490601/subscriptions/keyboard_topic-sub"
+      service-account-email: "id-220@keyboard-490601.iam.gserviceaccount.com"
+
 dromara:
   x-file-storage: #文件存储配置
     default-platform: cloudflare-r2 #默认使用的存储平台
@@ -104,7 +119,7 @@ nacos:
 elevenlabs:
   api-key: sk_25339d32bb14c91f460ed9fce83a1951672f07846a7a10ce
   voice-id: JBFqnCBsd6RMkjVDRZzb
-  model-id: eleven_turbo_v2_5
+  model-id: eleven_flash_v2_5
   output-format: mp3_44100_128
 
 deepgram:
@@ -112,4 +127,4 @@ deepgram:
   model: nova-2
   language: en
   smart-format: true
-  punctuate: true
+  punctuate: true

src/main/resources/application-prod.yml

@@ -50,6 +50,21 @@ apple:
       - "classpath:AppleRootCA-G2.cer"
       - "classpath:AppleRootCA-G3.cer"
 
+google:
+  play:
+    enabled: true
+    package-name: "com.boshan.key.of.love"
+    service-account-key-path: "classpath:keyboard-490601-ee503a425cc4.json"
+    oauth-token-uri: "https://oauth2.googleapis.com/token"
+    android-publisher-scope: "https://www.googleapis.com/auth/androidpublisher"
+    pubsub-token-info-uri: "https://oauth2.googleapis.com/tokeninfo"
+    validate-pubsub-jwt: true
+    require-obfuscated-account-id: false
+    pubsub:
+      expected-topic: "projects/keyboard-490601/topics/keyboard_topic"
+      expected-subscription: "projects/keyboard-490601/subscriptions/keyboard_topic-sub"
+      service-account-email: "id-220@keyboard-490601.iam.gserviceaccount.com"
+
 nacos:
   config:
     server-addr: 127.0.0.1:8848
@@ -76,7 +91,7 @@ sa-token:
 elevenlabs:
   api-key: sk_25339d32bb14c91f460ed9fce83a1951672f07846a7a10ce
   voice-id: JBFqnCBsd6RMkjVDRZzb
-  model-id: eleven_turbo_v2_5
+  model-id: eleven_flash_v2_5
   output-format: mp3_44100_128
 
 deepgram:

src/main/resources/keyboard-490601-ee503a425cc4.json

@@ -0,0 +1,13 @@
+{
+  "type": "service_account",
+  "project_id": "keyboard-490601",
+  "private_key_id": "ee503a425cc4eca9024352f5f588a93b2280c2d6",
+  "private_key": "-----BEGIN PRIVATE KEY-----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\n4t67bLfWuMHCLQWIqnGrRhY=\n-----END PRIVATE KEY-----\n",
+  "client_email": "id-220@keyboard-490601.iam.gserviceaccount.com",
+  "client_id": "103246842098216114468",
+  "auth_uri": "https://accounts.google.com/o/oauth2/auth",
+  "token_uri": "https://oauth2.googleapis.com/token",
+  "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
+  "client_x509_cert_url": "https://www.googleapis.com/robot/v1/metadata/x509/id-220%40keyboard-490601.iam.gserviceaccount.com",
+  "universe_domain": "googleapis.com"
+}

src/main/resources/mapper/KeyboardUserCharacterMapper.xml

@@ -9,7 +9,7 @@
         SELECT
         kuc.id,
         kuc.character_id,
-        kci.character_name,
+        COALESCE(kci.character_name, kci_en.character_name) AS character_name,
         kuc.emoji
         FROM keyboard_user_character kuc
         JOIN keyboard_user_sort kus
@@ -17,6 +17,9 @@
         LEFT JOIN keyboard_character_i18n kci
         ON kuc.character_id = kci.character_id
         AND kci."locale" = #{locale}
+        LEFT JOIN keyboard_character_i18n kci_en
+        ON kuc.character_id = kci_en.character_id
+        AND kci_en."locale" = 'en'
         WHERE kuc.user_id = #{loginId}
         AND kuc.deleted = FALSE
         ORDER BY array_position(kus.user_characteu_id_sort, kuc.id) NULLS LAST;