上门做菜系统的Go语言开发：如何实现用户消费记录功能？

CREATE TABLE IF NOT EXISTS `dishes` (
    `id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT COMMENT '菜品 ID',
    `name` VARCHAR(50) NOT NULL COMMENT '菜名',
    `image` VARCHAR(100) NOT NULL COMMENT '图片地址',
    `category_id` INT(10) UNSIGNED NOT NULL COMMENT '分类 ID',
    `price` FLOAT(10,2) UNSIGNED NOT NULL COMMENT '价格',
    `created_at` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
    `updated_at` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
    PRIMARY KEY (`id`)
) ENGINE=InnoDB CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci COMMENT='菜品表';

CREATE TABLE IF NOT EXISTS `orders` (
    `id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT COMMENT '订单 ID',
    `user_id` INT(10) UNSIGNED NOT NULL COMMENT '用户 ID',
    `total_price` FLOAT(10,2) UNSIGNED NOT NULL COMMENT '订单总价',
    `status` TINYINT(1) UNSIGNED NOT NULL DEFAULT '0' COMMENT '订单状态，0：未支付，1：已支付，2：已完成，3：已取消',
    `created_at` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
    `updated_at` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
    PRIMARY KEY (`id`)
) ENGINE=InnoDB CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci COMMENT='订单表';

CREATE TABLE IF NOT EXISTS `order_items` (
    `id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT COMMENT '订单详情 ID',
    `order_id` INT(10) UNSIGNED NOT NULL COMMENT '订单 ID',
    `dish_id` INT(10) UNSIGNED NOT NULL COMMENT '菜品 ID',
    `quantity` SMALLINT(5) UNSIGNED NOT NULL COMMENT '数量',
    `price` FLOAT(10,2) UNSIGNED NOT NULL COMMENT '单价',
    `created_at` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
    `updated_at` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
    PRIMARY KEY (`id`)
) ENGINE=InnoDB CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci COMMENT='订单详情表';

CREATE TABLE IF NOT EXISTS `consumption_records` (
    `id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT COMMENT '消费记录 ID',
    `user_id` INT(10) UNSIGNED NOT NULL COMMENT '用户 ID',
    `order_id` INT(10) UNSIGNED NOT NULL COMMENT '订单 ID',
    `money` FLOAT(10,2) UNSIGNED NOT NULL COMMENT '消费金额',
    `created_at` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
    `updated_at` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
    PRIMARY KEY (`id`)
) ENGINE=InnoDB CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci COMMENT='消费记录表';

type ConsumptionRecord struct {
    ID        uint32    `db:"id" JSON:"id"`
    UserID    uint32    `db:"user_id" json:"user_id"`
    OrderID   uint32    `db:"order_id" json:"order_id"`
    Money     float32   `db:"money" json:"money"`
    CreatedAt time.Time `db:"created_at" json:"created_at"`
    UpdatedAt time.Time `db:"updated_at" json:"updated_at"`
}

type OrderDetail struct {
    ID         uint32    `db:"id" json:"id"`
    OrderID    uint32    `db:"order_id" json:"order_id"`
    DishID     uint32    `db:"dish_id" json:"dish_id"`
    Quantity   uint16    `db:"quantity" json:"quantity"`
    Price      float32   `db:"price" json:"price"`
    CreatedAt  time.Time `db:"created_at" json:"created_at"`
    UpdatedAt  time.Time `db:"updated_at" json:"updated_at"`
    Dish       *Dish     `db:"-" json:"dish"`
}

type Order struct {
    ID         uint32         `db:"id" json:"id"`
    UserID     uint32         `db:"user_id" json:"user_id"`
    TotalPrice float32        `db:"total_price" json:"total_price"`
    Status     OrderStatus    `db:"status" json:"status"`
    CreatedAt  time.Time      `db:"created_at" json:"created_at"`
    UpdatedAt  time.Time      `db:"updated_at" json:"updated_at"`
    Items      []*OrderDetail `db:"-" json:"items"`
}

// GetOrderDetailsByOrderIDs 根据订单 ID 列表查询订单详情
func GetOrderDetailsByOrderIDs(DB *sql.DB, orderIDs []uint32) ([]*OrderDetail, error) {
    details := make([]*OrderDetail, 0)

    if len(orderIDs) == 0 {
        return details, nil
    }

    // 拼接查询 SQL
    var placeHolders strings.Builder
    var args []interface{}
    for i, id := range orderIDs {
        if i != 0 {
            placeHolders.WriteString(", ")
        }
        placeHolders.WriteString("?")
        args = append(args, id)
    }

    query := fmt.Sprintf(`
        SELECT
            id, order_id, dish_id, quantity, price, created_at, updated_at
        FROM
            order_items
        WHERE
            order_id IN (%s)
    `, placeHolders.String())

    rows, err := DB.Query(query, args...)
    if err != nil {
        return nil, err
    }
    defer rows.Close()

    // 遍历查询结果，并填充菜品信息到订单详情结构体
    for rows.Next() {
        detail := &OrderDetail{}
        err := rows.Scan(
            &detail.ID, &detail.OrderID, &detail.DishID, &detail.Quantity,
            &detail.Price, &detail.CreatedAt, &detail.UpdatedAt)
        if err != nil {
            return nil, err
        }

        dish, err := GetDishByID(DB, detail.DishID)
        if err != nil {
            return nil, err
        }
        detail.Dish = dish

        details = append(details, detail)
    }

    return details, nil
}

// AddConsumptionRecord 添加消费记录
func AddConsumptionRecord(
    DB *sql.DB,
    userID uint32,
    orderID uint32,
    money float32) error {

    insertQuery := `
        INSERT INTO consumption_records (user_id, order_id, money)
        VALUES (?, ?, ?)
    `
    _, err := DB.Exec(insertQuery, userID, orderID, money)
    if err != nil {
        return err
    }

    return nil
}