package model

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

var _ RechargeModel = (*customRechargeModel)(nil)

type (
	// RechargeModel is an interface to be customized, add more methods here,
	// and implement the added methods in customRechargeModel.
	RechargeModel interface {
		rechargeModel
		InsertRechargeTrans(ctx context.Context, data *Recharge, session sqlx.Session) (sql.Result, error)
		FindRechargeListByUserId(ctx context.Context, userId, page, pageSize int64) ([]*Recharge, int64, error)
	}

	customRechargeModel struct {
		*defaultRechargeModel
	}
)

// NewRechargeModel returns a model for the database table.
func NewRechargeModel(conn sqlx.SqlConn, c cache.CacheConf, opts ...cache.Option) RechargeModel {
	return &customRechargeModel{
		defaultRechargeModel: newRechargeModel(conn, c, opts...),
	}
}
func (m *customRechargeModel) InsertRechargeTrans(ctx context.Context, data *Recharge, session sqlx.Session) (sql.Result, error) {
	rechargeOutTradeNoKey := fmt.Sprintf("%s%v", cacheRechargeOutTradeNoPrefix, data.OutTradeNo)
	rechargeTransactionIdKey := fmt.Sprintf("%s%v", cacheRechargeTransactionIdPrefix, data.TransactionId)
	query := fmt.Sprintf("INSERT INTO %s (%s) VALUES (?, ?, ?, ?, ?)", m.table, rechargeRowsExpectAutoSet)
	ret, err := session.ExecCtx(ctx, query, data.UserId, data.TransactionId, data.OutTradeNo, data.Amount, data.PaymentMethod)
	if err != nil {
		return nil, err
	}
	// 2. 更新缓存，保证所有缓存操作成功
	cacheKeys := []string{rechargeOutTradeNoKey, rechargeTransactionIdKey}
	cacheErrors := make([]error, len(cacheKeys))

	cacheErrors[0] = m.DelCacheCtx(ctx, rechargeOutTradeNoKey)
	cacheErrors[1] = m.DelCacheCtx(ctx, rechargeTransactionIdKey)
	// 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 *customRechargeModel) FindRechargeListByUserId(ctx context.Context, userId, page, pageSize int64) ([]*Recharge, int64, error) {
	offset := (page - 1) * pageSize
	query := fmt.Sprintf("SELECT * FROM recharge WHERE user_id = ? ORDER BY created_at DESC LIMIT ? OFFSET ?")

	var recharges []*Recharge
	err := m.QueryRowsNoCacheCtx(ctx, &recharges, query, userId, pageSize, offset)
	if err != nil {
		return nil, 0, err
	}

	// 获取总记录数
	var total int64
	countQuery := "SELECT COUNT(1) FROM recharge WHERE user_id = ?"
	err = m.QueryRowNoCacheCtx(ctx, &total, countQuery, userId)
	if err != nil {
		return nil, 0, err
	}

	return recharges, total, nil
}