package model

import (
	"context"
	"database/sql"
	"errors"
	"fmt"
	"github.com/zeromicro/go-zero/core/stores/cache"
	"github.com/zeromicro/go-zero/core/stores/sqlx"
)

var _ UsersModel = (*customUsersModel)(nil)

type (
	// UsersModel is an interface to be customized, add more methods here,
	// and implement the added methods in customUsersModel.
	UsersModel interface {
		usersModel
		UpdateUserTrans(ctx context.Context, user *Users, session sqlx.Session) (sql.Result, error)
		FindOneTrans(ctx context.Context, userId int64, session sqlx.Session) (*Users, error)
	}

	customUsersModel struct {
		*defaultUsersModel
	}
)

// NewUsersModel returns a model for the database table.
func NewUsersModel(conn sqlx.SqlConn, c cache.CacheConf, opts ...cache.Option) UsersModel {
	return &customUsersModel{
		defaultUsersModel: newUsersModel(conn, c, opts...),
	}
}

func (m *defaultUsersModel) UpdateUserTrans(ctx context.Context, user *Users, session sqlx.Session) (sql.Result, error) {
	userIdKey := fmt.Sprintf("%s%v", cacheUsersIdPrefix, user.Id)
	usersPhoneKey := fmt.Sprintf("%s%v", cacheUsersPhonePrefix, user.Phone)
	usersUsernameKey := fmt.Sprintf("%s%v", cacheUsersUsernamePrefix, user.Username)
	query := fmt.Sprintf("UPDATE %s SET %s WHERE `id` = ?", m.table, usersRowsWithPlaceHolder)
	ret, err := session.ExecCtx(ctx, query, user.Username, user.Password, user.Phone, user.AuthStatus, user.Id)
	if err != nil {
		return nil, err
	}

	// 2. 删除缓存，保证所有缓存操作成功
	cacheKeys := []string{userIdKey, usersPhoneKey, usersUsernameKey}
	cacheErrors := make([]error, len(cacheKeys))

	cacheErrors[0] = m.DelCacheCtx(ctx, userIdKey)
	cacheErrors[1] = m.DelCacheCtx(ctx, usersPhoneKey)
	cacheErrors[2] = m.DelCacheCtx(ctx, usersUsernameKey)

	// 3. 检查缓存操作是否全部成功
	for _, cacheErr := range cacheErrors {
		if cacheErr != nil {
			return nil, cacheErr // 返回第一个缓存更新失败的错误
		}
	}
	return ret, err
}
func (m *defaultUsersModel) FindOneTrans(ctx context.Context, userId int64, session sqlx.Session) (*Users, error) {
	// 定义 SQL 查询语句
	query := fmt.Sprintf("SELECT %s FROM %s WHERE `id` = ? LIMIT 1", usersRows, m.table)

	var user Users
	// 在事务上下文中执行查询
	err := session.QueryRowCtx(ctx, &user, query, userId)
	if err != nil {
		if errors.Is(err, sql.ErrNoRows) {
			// 如果没有找到记录，返回 nil 和 ErrNotFound 错误
			return nil, ErrNotFound
		}
		return nil, err
	}

	// 返回查询结果
	return &user, nil
}