577 lines
18 KiB
Markdown
577 lines
18 KiB
Markdown
# 订阅支付系统重新设计方案
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## 📊 问题分析
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### 现有系统的问题
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1. **价格配置混乱**
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- 季付和月付价格相同（配置错误）
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- `monthly_price` 和 `yearly_price` 字段命名不清晰
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- 缺少季付、半年付等周期的价格配置
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2. **升级逻辑复杂且不合理**
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- 计算剩余价值折算（按天计算 `remaining_value`）
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- 用户难以理解升级价格
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- 续费用户和新用户价格不一致
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- 逻辑复杂,容易出错
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3. **按钮文案不清晰**
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- 已订阅用户应显示"续费 Pro"/"续费 Max"
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- 而不是"升级至 Pro"/"切换至 Pro"
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4. **数据库表设计问题**
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- `SubscriptionUpgrade` 表记录升级,但逻辑过于复杂
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- `PaymentOrder` 表缺少必要字段
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- 价格配置分散在多个字段
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---
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## ✨ 新设计方案
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### 核心原则
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1. **简化续费逻辑**: **续费用户与新用户价格完全一致**,不做任何折算
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2. **清晰的价格体系**: 每个套餐每个周期都有明确的价格
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3. **统一的用户体验**: 无论是新购还是续费,价格透明一致
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4. **独立的订阅记录**: 每次支付都创建新的订阅记录(历史可追溯)
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---
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## 📐 数据库表设计
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### 1. `subscription_plans` - 订阅套餐表（重构）
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```sql
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CREATE TABLE subscription_plans (
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id INT PRIMARY KEY AUTO_INCREMENT,
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plan_code VARCHAR(20) NOT NULL UNIQUE COMMENT '套餐代码: pro, max',
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plan_name VARCHAR(50) NOT NULL COMMENT '套餐名称: Pro专业版, Max旗舰版',
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description TEXT COMMENT '套餐描述',
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features JSON COMMENT '功能列表',
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-- 价格配置（所有周期价格）
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price_monthly DECIMAL(10,2) NOT NULL DEFAULT 0 COMMENT '月付价格',
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price_quarterly DECIMAL(10,2) NOT NULL DEFAULT 0 COMMENT '季付价格(3个月)',
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price_semiannual DECIMAL(10,2) NOT NULL DEFAULT 0 COMMENT '半年付价格(6个月)',
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price_yearly DECIMAL(10,2) NOT NULL DEFAULT 0 COMMENT '年付价格(12个月)',
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-- 状态字段
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is_active BOOLEAN DEFAULT TRUE COMMENT '是否启用',
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display_order INT DEFAULT 0 COMMENT '展示顺序',
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
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INDEX idx_plan_code (plan_code),
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INDEX idx_active_order (is_active, display_order)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='订阅套餐配置表';
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```
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**示例数据**:
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```sql
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INSERT INTO subscription_plans (plan_code, plan_name, description, price_monthly, price_quarterly, price_semiannual, price_yearly) VALUES
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('pro', 'Pro 专业版', '为专业投资者打造', 299.00, 799.00, 1499.00, 2699.00),
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('max', 'Max 旗舰版', '旗舰级体验', 599.00, 1599.00, 2999.00, 5399.00);
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```
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---
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### 2. `user_subscriptions` - 用户订阅记录表（重构）
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```sql
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CREATE TABLE user_subscriptions (
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id INT PRIMARY KEY AUTO_INCREMENT,
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user_id INT NOT NULL COMMENT '用户ID',
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subscription_id VARCHAR(32) UNIQUE NOT NULL COMMENT '订阅ID(唯一标识)',
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-- 订阅基本信息
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plan_code VARCHAR(20) NOT NULL COMMENT '套餐代码: pro, max',
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billing_cycle VARCHAR(20) NOT NULL COMMENT '计费周期: monthly, quarterly, semiannual, yearly',
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-- 订阅时间
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start_date DATETIME NOT NULL COMMENT '订阅开始时间',
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end_date DATETIME NOT NULL COMMENT '订阅结束时间',
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-- 订阅状态
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status VARCHAR(20) NOT NULL DEFAULT 'active' COMMENT '状态: active(有效), expired(已过期), cancelled(已取消)',
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is_current BOOLEAN DEFAULT FALSE COMMENT '是否为当前生效的订阅',
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-- 支付信息
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payment_order_id INT COMMENT '关联的支付订单ID',
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paid_amount DECIMAL(10,2) NOT NULL COMMENT '实际支付金额',
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original_price DECIMAL(10,2) NOT NULL COMMENT '原价',
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discount_amount DECIMAL(10,2) DEFAULT 0 COMMENT '优惠金额',
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-- 订阅类型
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subscription_type VARCHAR(20) DEFAULT 'new' COMMENT '订阅类型: new(新购), renew(续费)',
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previous_subscription_id VARCHAR(32) COMMENT '上一个订阅ID(续费时记录)',
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-- 自动续费
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auto_renew BOOLEAN DEFAULT FALSE COMMENT '是否自动续费',
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
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INDEX idx_user_id (user_id),
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INDEX idx_subscription_id (subscription_id),
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INDEX idx_user_current (user_id, is_current),
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INDEX idx_status (status),
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INDEX idx_end_date (end_date),
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FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='用户订阅记录表';
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```
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**设计说明**:
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- 每次支付都创建新的订阅记录
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- 通过 `is_current` 标识当前生效的订阅
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- 支持订阅历史追溯
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- 续费时记录 `previous_subscription_id` 形成订阅链
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---
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### 3. `payment_orders` - 支付订单表（重构）
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```sql
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CREATE TABLE payment_orders (
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id INT PRIMARY KEY AUTO_INCREMENT,
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order_no VARCHAR(32) UNIQUE NOT NULL COMMENT '订单号',
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user_id INT NOT NULL COMMENT '用户ID',
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-- 订阅信息
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plan_code VARCHAR(20) NOT NULL COMMENT '套餐代码',
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billing_cycle VARCHAR(20) NOT NULL COMMENT '计费周期',
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subscription_type VARCHAR(20) DEFAULT 'new' COMMENT '订阅类型: new(新购), renew(续费)',
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-- 价格信息
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original_price DECIMAL(10,2) NOT NULL COMMENT '原价',
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discount_amount DECIMAL(10,2) DEFAULT 0 COMMENT '优惠金额',
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final_amount DECIMAL(10,2) NOT NULL COMMENT '实付金额',
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-- 优惠码
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promo_code_id INT COMMENT '优惠码ID',
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promo_code VARCHAR(50) COMMENT '优惠码',
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-- 支付信息
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payment_method VARCHAR(20) DEFAULT 'wechat' COMMENT '支付方式: wechat, alipay',
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payment_channel VARCHAR(50) COMMENT '支付渠道详情',
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transaction_id VARCHAR(64) COMMENT '第三方交易号',
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qr_code_url TEXT COMMENT '支付二维码URL',
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-- 订单状态
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status VARCHAR(20) DEFAULT 'pending' COMMENT '状态: pending(待支付), paid(已支付), expired(已过期), cancelled(已取消)',
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-- 时间信息
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
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paid_at TIMESTAMP NULL COMMENT '支付时间',
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expired_at TIMESTAMP NULL COMMENT '过期时间',
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-- 备注
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remark TEXT COMMENT '备注信息',
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INDEX idx_order_no (order_no),
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INDEX idx_user_id (user_id),
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INDEX idx_status (status),
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INDEX idx_created_at (created_at),
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FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
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FOREIGN KEY (promo_code_id) REFERENCES promo_codes(id) ON DELETE SET NULL
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='支付订单表';
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```
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---
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### 4. `promo_codes` - 优惠码表（保持不变,微调）
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```sql
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CREATE TABLE promo_codes (
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id INT PRIMARY KEY AUTO_INCREMENT,
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code VARCHAR(50) UNIQUE NOT NULL COMMENT '优惠码',
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description VARCHAR(200) COMMENT '描述',
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-- 折扣类型
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discount_type VARCHAR(20) NOT NULL COMMENT '折扣类型: percentage(百分比), fixed_amount(固定金额)',
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discount_value DECIMAL(10,2) NOT NULL COMMENT '折扣值',
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-- 适用范围
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applicable_plans JSON COMMENT '适用套餐: ["pro", "max"] 或 null(全部)',
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applicable_cycles JSON COMMENT '适用周期: ["monthly", "yearly"] 或 null(全部)',
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min_amount DECIMAL(10,2) COMMENT '最低消费金额',
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-- 使用限制
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max_total_uses INT COMMENT '最大使用次数(总)',
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max_uses_per_user INT DEFAULT 1 COMMENT '每用户最大使用次数',
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current_uses INT DEFAULT 0 COMMENT '当前使用次数',
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-- 有效期
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valid_from TIMESTAMP DEFAULT CURRENT_TIMESTAMP COMMENT '生效时间',
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valid_until TIMESTAMP NULL COMMENT '过期时间',
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-- 状态
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is_active BOOLEAN DEFAULT TRUE COMMENT '是否启用',
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
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INDEX idx_code (code),
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INDEX idx_active (is_active),
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INDEX idx_valid_period (valid_from, valid_until)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='优惠码表';
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```
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---
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### 5. `promo_code_usage` - 优惠码使用记录表（保持不变）
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```sql
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CREATE TABLE promo_code_usage (
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id INT PRIMARY KEY AUTO_INCREMENT,
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promo_code_id INT NOT NULL,
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user_id INT NOT NULL,
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order_id INT NOT NULL,
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discount_amount DECIMAL(10,2) NOT NULL COMMENT '实际优惠金额',
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used_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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INDEX idx_promo_code (promo_code_id),
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INDEX idx_user_id (user_id),
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INDEX idx_order_id (order_id),
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FOREIGN KEY (promo_code_id) REFERENCES promo_codes(id) ON DELETE CASCADE,
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FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
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FOREIGN KEY (order_id) REFERENCES payment_orders(id) ON DELETE CASCADE
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='优惠码使用记录表';
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```
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---
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### 6. 删除不必要的表
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**删除 `subscription_upgrades` 表** - 不再需要复杂的升级逻辑
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---
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## 💡 业务逻辑设计
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### 1. 价格计算逻辑（简化版）
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```python
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def calculate_subscription_price(plan_code, billing_cycle, promo_code=None):
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"""
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计算订阅价格（新购和续费价格完全一致）
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Args:
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plan_code: 套餐代码 (pro/max)
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billing_cycle: 计费周期 (monthly/quarterly/semiannual/yearly)
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promo_code: 优惠码（可选）
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Returns:
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dict: {
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'plan_code': 'pro',
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'billing_cycle': 'yearly',
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'original_price': 2699.00,
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'discount_amount': 0,
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'final_amount': 2699.00,
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'promo_code': None,
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'promo_error': None
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}
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"""
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# 1. 查询套餐价格
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plan = SubscriptionPlan.query.filter_by(plan_code=plan_code, is_active=True).first()
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if not plan:
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return {'error': '套餐不存在'}
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# 2. 获取对应周期的价格
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price_field = f'price_{billing_cycle}'
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original_price = getattr(plan, price_field, 0)
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if original_price <= 0:
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return {'error': '价格配置错误'}
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result = {
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'plan_code': plan_code,
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'plan_name': plan.plan_name,
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'billing_cycle': billing_cycle,
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'original_price': float(original_price),
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'discount_amount': 0,
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'final_amount': float(original_price),
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'promo_code': None,
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'promo_error': None
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}
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# 3. 应用优惠码（如果有）
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if promo_code:
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promo, error = validate_promo_code(promo_code, plan_code, billing_cycle, original_price, user_id)
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if promo:
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discount = calculate_discount(promo, original_price)
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result['discount_amount'] = float(discount)
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result['final_amount'] = float(original_price - discount)
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result['promo_code'] = promo.code
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elif error:
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result['promo_error'] = error
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return result
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```
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**关键点**:
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- ✅ 不再计算 `remaining_value`（剩余价值）
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- ✅ 不再区分新购/续费价格
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- ✅ 逻辑简单,易于维护
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- ✅ 用户体验清晰透明
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---
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### 2. 创建订单逻辑
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```python
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def create_subscription_order(user_id, plan_code, billing_cycle, promo_code=None):
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"""
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创建订阅支付订单
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"""
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# 1. 计算价格
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price_result = calculate_subscription_price(plan_code, billing_cycle, promo_code)
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if 'error' in price_result:
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return {'success': False, 'error': price_result['error']}
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# 2. 判断是新购还是续费
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current_sub = get_current_subscription(user_id)
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subscription_type = 'new'
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if current_sub and current_sub.plan_code in ['pro', 'max']:
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subscription_type = 'renew'
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# 3. 创建支付订单
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order = PaymentOrder(
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order_no=generate_order_no(user_id),
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user_id=user_id,
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plan_code=plan_code,
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billing_cycle=billing_cycle,
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subscription_type=subscription_type,
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original_price=price_result['original_price'],
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discount_amount=price_result['discount_amount'],
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final_amount=price_result['final_amount'],
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promo_code=promo_code,
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status='pending',
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expired_at=datetime.now() + timedelta(minutes=30)
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)
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db.session.add(order)
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db.session.commit()
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# 4. 生成支付二维码（微信支付）
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qr_code_url = generate_wechat_qr_code(order)
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order.qr_code_url = qr_code_url
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db.session.commit()
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return {'success': True, 'order': order.to_dict()}
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```
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---
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### 3. 支付成功后的订阅激活逻辑
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```python
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def activate_subscription_after_payment(order_id):
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"""
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支付成功后激活订阅
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"""
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order = PaymentOrder.query.get(order_id)
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if not order or order.status != 'paid':
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return {'success': False, 'error': '订单状态错误'}
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user_id = order.user_id
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plan_code = order.plan_code
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billing_cycle = order.billing_cycle
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# 1. 计算订阅周期
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cycle_days = {
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'monthly': 30,
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'quarterly': 90,
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'semiannual': 180,
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'yearly': 365
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}
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days = cycle_days.get(billing_cycle, 30)
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# 2. 获取当前订阅
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current_sub = UserSubscription.query.filter_by(
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user_id=user_id,
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is_current=True
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).first()
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# 3. 计算开始和结束时间
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now = datetime.now()
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if current_sub and current_sub.end_date > now:
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# 续费：从当前订阅结束时间开始
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start_date = current_sub.end_date
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else:
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# 新购：从当前时间开始
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start_date = now
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end_date = start_date + timedelta(days=days)
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# 4. 创建新订阅记录
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new_subscription = UserSubscription(
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user_id=user_id,
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subscription_id=generate_subscription_id(),
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plan_code=plan_code,
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billing_cycle=billing_cycle,
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start_date=start_date,
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end_date=end_date,
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status='active',
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is_current=True,
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payment_order_id=order.id,
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paid_amount=order.final_amount,
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original_price=order.original_price,
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discount_amount=order.discount_amount,
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subscription_type=order.subscription_type,
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previous_subscription_id=current_sub.subscription_id if current_sub else None
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)
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# 5. 将旧订阅标记为非当前
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if current_sub:
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current_sub.is_current = False
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db.session.add(new_subscription)
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db.session.commit()
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return {'success': True, 'subscription': new_subscription.to_dict()}
|
||
```
|
||
|
||
**关键特性**:
|
||
- ✅ 续费时从**当前订阅结束时间**开始,避免浪费
|
||
- ✅ 每次支付都创建新的订阅记录
|
||
- ✅ 保留历史订阅记录（通过 `previous_subscription_id` 形成链）
|
||
- ✅ 逻辑清晰,易于理解
|
||
|
||
---
|
||
|
||
### 4. 按钮文案逻辑
|
||
|
||
```python
|
||
def get_subscription_button_text(user, plan_code, billing_cycle):
|
||
"""
|
||
获取订阅按钮文字
|
||
|
||
Args:
|
||
user: 用户对象
|
||
plan_code: 套餐代码 (pro/max)
|
||
billing_cycle: 计费周期
|
||
|
||
Returns:
|
||
str: 按钮文字
|
||
"""
|
||
current_sub = get_current_subscription(user.id)
|
||
|
||
# 1. 如果没有订阅或订阅已过期
|
||
if not current_sub or current_sub.plan_code == 'free' or current_sub.status != 'active':
|
||
return f"选择 {get_plan_display_name(plan_code)}"
|
||
|
||
# 2. 如果是当前套餐且周期相同
|
||
if current_sub.plan_code == plan_code and current_sub.billing_cycle == billing_cycle:
|
||
return f"续费 {get_plan_display_name(plan_code)}"
|
||
|
||
# 3. 如果是当前套餐但周期不同
|
||
if current_sub.plan_code == plan_code:
|
||
return f"切换至{get_cycle_display_name(billing_cycle)}"
|
||
|
||
# 4. 如果是不同套餐
|
||
return f"选择 {get_plan_display_name(plan_code)}"
|
||
|
||
def get_plan_display_name(plan_code):
|
||
names = {'pro': 'Pro 专业版', 'max': 'Max 旗舰版'}
|
||
return names.get(plan_code, plan_code)
|
||
|
||
def get_cycle_display_name(billing_cycle):
|
||
names = {
|
||
'monthly': '月付',
|
||
'quarterly': '季付',
|
||
'semiannual': '半年付',
|
||
'yearly': '年付'
|
||
}
|
||
return names.get(billing_cycle, billing_cycle)
|
||
```
|
||
|
||
**示例**:
|
||
- 免费用户看 Pro 年付: "选择 Pro 专业版"
|
||
- Pro 月付用户看 Pro 年付: "切换至年付"
|
||
- Pro 年付用户看 Pro 年付: "续费 Pro 专业版"
|
||
- Pro 用户看 Max 年付: "选择 Max 旗舰版"
|
||
|
||
---
|
||
|
||
## 📊 价格配置示例
|
||
|
||
### Pro 专业版价格设定
|
||
|
||
| 计费周期 | 价格 | 原价 | 折扣 | 月均价格 |
|
||
|---------|------|------|------|---------|
|
||
| 月付 | ¥299 | - | - | ¥299 |
|
||
| 季付(3个月) | ¥799 | ¥897 | 11% | ¥266 |
|
||
| 半年付(6个月) | ¥1499 | ¥1794 | 16% | ¥250 |
|
||
| 年付(12个月) | ¥2699 | ¥3588 | 25% | ¥225 |
|
||
|
||
### Max 旗舰版价格设定
|
||
|
||
| 计费周期 | 价格 | 原价 | 折扣 | 月均价格 |
|
||
|---------|------|------|------|---------|
|
||
| 月付 | ¥599 | - | - | ¥599 |
|
||
| 季付(3个月) | ¥1599 | ¥1797 | 11% | ¥533 |
|
||
| 半年付(6个月) | ¥2999 | ¥3594 | 17% | ¥500 |
|
||
| 年付(12个月) | ¥5399 | ¥7188 | 25% | ¥450 |
|
||
|
||
---
|
||
|
||
## 🔄 迁移方案
|
||
|
||
### 数据迁移 SQL
|
||
|
||
参见 `database_migration.sql`
|
||
|
||
### 代码迁移步骤
|
||
|
||
1. **备份现有数据库**
|
||
2. **执行数据库迁移 SQL**
|
||
3. **更新数据库模型** (`models.py`)
|
||
4. **更新价格计算逻辑** (`calculate_price.py`)
|
||
5. **更新 API 路由** (`routes.py`)
|
||
6. **更新前端组件** (`SubscriptionContentNew.tsx`)
|
||
7. **测试完整流程**
|
||
8. **灰度发布**
|
||
|
||
---
|
||
|
||
## ✅ 优势总结
|
||
|
||
### 相比旧系统的改进
|
||
|
||
1. **价格透明** - 续费用户和新用户价格完全一致
|
||
2. **逻辑简化** - 不再计算剩余价值,代码减少 50%+
|
||
3. **易于理解** - 用户体验更清晰
|
||
4. **灵活扩展** - 轻松添加新的计费周期
|
||
5. **历史追溯** - 完整的订阅历史记录
|
||
6. **数据完整** - 每次支付都有完整的记录
|
||
|
||
### 用户体验改进
|
||
|
||
1. **按钮文案清晰** - "续费 Pro"/"选择 Pro"明确表达意图
|
||
2. **价格一致性** - 所有用户看到的价格都一样
|
||
3. **无隐藏费用** - 不会因为"升级折算"产生困惑
|
||
4. **透明计费** - 支付金额 = 显示价格 - 优惠码折扣
|
||
|
||
---
|
||
|
||
## 📝 后续优化建议
|
||
|
||
1. **自动续费** - 到期前自动扣款续费
|
||
2. **订阅提醒** - 到期前 7 天、3 天、1 天发送通知
|
||
3. **订阅暂停** - 允许用户暂停订阅
|
||
4. **订阅降级** - 从 Max 降级到 Pro（当前周期结束后生效）
|
||
5. **发票管理** - 支持开具电子发票
|
||
6. **支付方式扩展** - 支持支付宝、银行卡等
|
||
|
||
---
|
||
|
||
**设计时间**: 2025-11-19
|
||
**设计者**: Claude Code
|
||
**版本**: v2.0.0
|