添加键盘里的充值界面

CustomKeyboard/Model/KBKeyboardSubscriptionProduct.h

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+//
+//  KBKeyboardSubscriptionProduct.h
+//  CustomKeyboard
+//
+//  订阅商品模型（键盘扩展专用），用于展示与主 App 相同的订阅列表。
+//
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface KBKeyboardSubscriptionProduct : NSObject
+/// 主键 id
+@property (nonatomic, assign) NSInteger identifier;
+/// Apple 商品编号
+@property (nonatomic, copy, nullable) NSString *productId;
+/// 商品名称，如 Monthly
+@property (nonatomic, copy, nullable) NSString *name;
+/// 单位，如 Subscription
+@property (nonatomic, copy, nullable) NSString *unit;
+/// 商品描述
+@property (nonatomic, copy, nullable) NSString *productDescription;
+/// 货币符号
+@property (nonatomic, copy, nullable) NSString *currency;
+/// 现价
+@property (nonatomic, assign) double price;
+/// 原价（如接口未返回，则回退为 price 的 1.25 倍）
+@property (nonatomic, assign) double originPrice;
+/// 有效期数值
+@property (nonatomic, assign) NSInteger durationValue;
+/// 有效期单位
+@property (nonatomic, copy, nullable) NSString *durationUnit;
+
+/// 标题（描述 > name+unit > name > unit）
+- (NSString *)displayTitle;
+/// 当前价格文本
+- (NSString *)priceDisplayText;
+/// 划线价文本
+- (nullable NSString *)strikePriceDisplayText;
+
+@end
+
+NS_ASSUME_NONNULL_END

CustomKeyboard/Model/KBKeyboardSubscriptionProduct.m

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+//
+//  KBKeyboardSubscriptionProduct.m
+//  CustomKeyboard
+//
+
+#import "KBKeyboardSubscriptionProduct.h"
+#import <MJExtension/MJExtension.h>
+#import "KBLocalizationManager.h"
+
+@implementation KBKeyboardSubscriptionProduct
+
++ (NSDictionary *)mj_replacedKeyFromPropertyName {
+    return @{
+        @"identifier": @"id",
+        @"productDescription": @"description",
+    };
+}
+
+- (NSString *)displayTitle {
+    if (self.productDescription.length > 0) {
+        return self.productDescription;
+    }
+    NSString *name = self.name ?: @"";
+    NSString *unit = self.unit ?: @"";
+    if (name.length && unit.length) {
+        return [NSString stringWithFormat:@"%@ %@", name, unit];
+    }
+    if (name.length) { return name; }
+    if (unit.length) { return unit; }
+    if (self.durationValue > 0 && self.durationUnit.length > 0) {
+        return [NSString stringWithFormat:@"%ld %@", (long)self.durationValue, self.durationUnit];
+    }
+    return KBLocalized(@"Subscription");
+}
+
+- (NSString *)priceDisplayText {
+    double priceValue = self.price;
+    if (priceValue <= 0) {
+        return @"$0.00";
+    }
+    NSString *currency = self.currency.length ? self.currency : @"$";
+    return [NSString stringWithFormat:@"%@%.2f", currency, priceValue];
+}
+
+- (nullable NSString *)strikePriceDisplayText {
+    double rawValue = self.originPrice;
+    if (rawValue <= 0 && self.price > 0) {
+        rawValue = self.price * 1.25;
+    }
+    if (rawValue <= 0) { return nil; }
+    NSString *currency = self.currency.length ? self.currency : @"$";
+    return [NSString stringWithFormat:@"%@%.2f", currency, rawValue];
+}
+
+@end