1

keyBoard/Class/Shop/VC/KBSkinDetailVC.m

@@ -13,6 +13,8 @@
 #import "KBSkinBottomActionView.h"
 #import "KBShopVM.h"
 #import "KBShopThemeTagModel.h"
+#import "KBHUD.h"
+#import "KBSkinService.h"
 
 static NSString * const kHeaderCellId = @"kHeaderCellId";
 static NSString * const kTagsContainerCellId = @"kTagsContainerCellId";
@@ -34,6 +36,7 @@ typedef NS_ENUM(NSInteger, KBSkinDetailSection) {
 @property (nonatomic, copy) NSArray<NSDictionary *> *gridData;   // 底部网格数据
 @property (nonatomic, strong) KBShopVM *shopVM;
 @property (nonatomic, strong, nullable) KBShopThemeDetailModel *detailModel;
+@property (nonatomic, assign) BOOL isProcessingAction;
 @end
 
 @implementation KBSkinDetailVC
@@ -69,6 +72,7 @@ typedef NS_ENUM(NSInteger, KBSkinDetailSection) {
         make.bottom.equalTo(self.bottomBar.mas_top).offset(-10);
     }];
 
+    [self updateBottomBarAppearance];
     [self fetchThemeDetailIfNeeded];
 }
 
@@ -208,7 +212,87 @@ typedef NS_ENUM(NSInteger, KBSkinDetailSection) {
 
 #pragma mark - Actions
 - (void)handleDownloadAction {
-    // 预留：下载/购买动作
+    if (self.isProcessingAction) { return; }
+    if (self.themeId.length == 0) {
+        [KBHUD showInfo:KBLocalized(@"主题信息缺失")];
+        return;
+    }
+    if (!self.detailModel) {
+        [KBHUD showInfo:KBLocalized(@"正在加载主题详情")];
+        return;
+    }
+    if (self.detailModel.isPurchased) {
+        [self requestDownload];
+    } else {
+        [self purchaseCurrentTheme];
+    }
+}
+
+- (void)purchaseCurrentTheme {
+    if (self.isProcessingAction) { return; }
+    self.isProcessingAction = YES;
+    [KBHUD show];
+    __weak typeof(self) weakSelf = self;
+    [self.shopVM purchaseThemeWithId:self.themeId completion:^(BOOL success, NSError * _Nullable error) {
+        dispatch_async(dispatch_get_main_queue(), ^{
+            weakSelf.isProcessingAction = NO;
+            [KBHUD dismiss];
+            if (error || !success) {
+                NSString *msg = error.localizedDescription ?: KBLocalized(@"购买失败");
+                [KBHUD showInfo:msg];
+                return;
+            }
+            weakSelf.detailModel.isPurchased = YES;
+            [weakSelf updateBottomBarAppearance];
+            [weakSelf requestDownload];
+        });
+    }];
+}
+
+- (void)requestDownload {
+    if (self.isProcessingAction) { return; }
+    self.isProcessingAction = YES;
+    [KBHUD show];
+    NSMutableDictionary *skin = [NSMutableDictionary dictionary];
+    if (!skin[@"id"] && self.detailModel.themeId) {
+        skin[@"id"] = self.detailModel.themeId;
+    }
+    if (!skin[@"name"] && self.detailModel.themeName) {
+        skin[@"name"] = self.detailModel.themeName;
+    }
+    if (!skin[@"themeDownloadUrl"]) {
+        [KBHUD showInfo:KBLocalized(@"缺少下载地址")];
+        return;
+    }
+    skin[@"themeDownloadUrl"] = self.detailModel.themeDownloadUrl;
+    
+    [[KBSkinService shared] applySkinWithJSON:skin
+                           fromViewController:self
+                                         mode:KBSkinSourceModeRemoteZip
+                                    completion:^(BOOL success) {
+        if (success) {
+            [KBHUD showSuccess:KBLocalized(@"已开始下载")];
+        } else {
+            [KBHUD showInfo:KBLocalized(@"下载失败")];
+        }
+    }];
+}
+
+- (void)updateBottomBarAppearance {
+    BOOL purchased = self.detailModel.isPurchased;
+    if (purchased) {
+        self.bottomBar.titleText = KBLocalized(@"Download again");
+        self.bottomBar.showsPrice = NO;
+    } else {
+        NSString *price = self.detailModel ? [NSString stringWithFormat:@"%.2f", self.detailModel.themePrice] : @"0";
+        self.bottomBar.titleText = KBLocalized(@"Download");
+        self.bottomBar.priceText = price;
+        self.bottomBar.showsPrice = YES;
+        UIImage *coin = [UIImage imageNamed:@"shop_jb_icon"];
+        if (coin) {
+            self.bottomBar.iconImage = coin;
+        }
+    }
 }
 
 - (void)fetchThemeDetailIfNeeded {
@@ -235,6 +319,7 @@ typedef NS_ENUM(NSInteger, KBSkinDetailSection) {
                 }
             }
             weakSelf.tags = tagNames.copy;
+            [weakSelf updateBottomBarAppearance];
             [weakSelf.collectionView reloadData];
         });
     }];