-- 兑换码功能数据库表
-- 执行方式: mysql -u root -p video_parser < database/redeem_codes.sql

-- 兑换码表
CREATE TABLE IF NOT EXISTS `redeem_codes` (
    `id` INT PRIMARY KEY AUTO_INCREMENT,
    `code` VARCHAR(32) NOT NULL UNIQUE COMMENT '兑换码',
    `batch_id` VARCHAR(32) COMMENT '批次ID',
    `target_group_id` INT NOT NULL COMMENT '目标用户组ID',
    `duration_days` INT DEFAULT 30 COMMENT '有效期天数',
    `is_used` TINYINT(1) DEFAULT 0 COMMENT '是否已使用',
    `used_by` INT COMMENT '使用者用户ID',
    `used_at` DATETIME COMMENT '使用时间',
    `expires_at` DATETIME COMMENT '兑换码过期时间',
    `remark` VARCHAR(255) COMMENT '备注',
    `created_at` DATETIME DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (`target_group_id`) REFERENCES `user_groups`(`id`),
    FOREIGN KEY (`used_by`) REFERENCES `users`(`id`),
    INDEX `idx_code` (`code`),
    INDEX `idx_batch_id` (`batch_id`),
    INDEX `idx_is_used` (`is_used`),
    INDEX `idx_expires_at` (`expires_at`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='兑换码表';

-- 用户组到期时间表
CREATE TABLE IF NOT EXISTS `user_group_expiry` (
    `id` INT PRIMARY KEY AUTO_INCREMENT,
    `user_id` INT NOT NULL UNIQUE COMMENT '用户ID',
    `group_id` INT NOT NULL COMMENT '用户组ID',
    `expires_at` DATETIME NOT NULL COMMENT '到期时间',
    `created_at` DATETIME DEFAULT CURRENT_TIMESTAMP,
    `updated_at` DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    FOREIGN KEY (`user_id`) REFERENCES `users`(`id`),
    FOREIGN KEY (`group_id`) REFERENCES `user_groups`(`id`),
    INDEX `idx_user_id` (`user_id`),
    INDEX `idx_expires_at` (`expires_at`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='用户组到期时间表';