package walletser

import (
	"91porn-server/app/appg"
	"91porn-server/common/db"
	"91porn-server/common/log"
	"91porn-server/common/stderr"
	"91porn-server/models/v/txnmod"
	"91porn-server/models/v/walletmod"
	"go.mongodb.org/mongo-driver/bson/primitive"
)

func debitPlan(w *walletmod.Wallet, amt int64) *walletmod.DebitPlan {
	p := walletmod.DebitPlan{}
	l1 := w.Amount - amt
	if l1 >= 0 { //amount够了
		p.Amount = amt
		return &p
	} else { // l1 < 0
		//amount 扣完
		l2 := w.Income + l1
		if l2 >= 0 {
			p.Amount = w.Amount
			p.Income = -l1
			return &p
		} else {
			return nil //余额不足
		}
	}
}

const (
	StoreBuyGoods            = 1
	StoreBuyNudeChat         = 2
	StorePublishWish         = 3
	StoreGoodsOrderRefund    = 4
	StoreNudeChatOrderRefund = 5
	StoreWishRefund          = 6
	StoreWishEdit            = 7
)

// StoreDeductBalance 商城相关扣款
func StoreDeductBalance(uid uint64, amount int64, orderId primitive.ObjectID, source int, desc string) (balance int64, code stderr.Code) {
	w, err := walletmod.GetWallet(uid)
	if err != nil || w == nil {
		return 0, stderr.ErrNetWorkBusy
	}
	plan := debitPlan(w, amount)
	if plan == nil {
		return 0, stderr.InsufficientBalance
	}
	var tranType txnmod.TransType
	switch source {
	case StoreBuyGoods:
		tranType = txnmod.StoreBuyGoods
	case StoreBuyNudeChat:
		tranType = txnmod.StoreBuyNudeChat
	case StorePublishWish:
		tranType = txnmod.StorePublishWish
	case StoreWishEdit:
		tranType = txnmod.StoreWishEdit
	default:
		return 0, stderr.ErrParamError
	}
	err = appg.VideoDB.Trans(func(t *db.MongoTool) (err error) {
		wallet, err := walletmod.Debit(t, plan, uid)
		if err != nil {
			log.Error("StoreDeductBalance walletmod.Debit fail", log.Any("uid", uid), log.Any("orderId", orderId), log.Any("amount", amount), log.Any("source", source))
			return
		}
		// 写入流水
		txnLog := &txnmod.TransactionLog{UID: uid,
			Amount:       -amount,
			ActualAmount: float64(-amount),
			TranType:     tranType.Key(),
			TranTypeInt:  int64(tranType),
			TransNo:      orderId,
			Desc:         desc,
			//DiscDoc:      discDoc,
			//SysType:      u.SysType,
			RealAmount: walletmod.GetRealAmount(wallet),
		}
		err = txnmod.InsertTransactionLog(t, txnLog)
		if err != nil {
			log.Error("StoreDeductBalance txnmod.InsertTransactionLog fail", log.Any("uid", uid), log.Any("orderId", orderId), log.Any("amount", amount), log.Any("source", source))
			return
		}
		balance = wallet.Amount + wallet.Income
		return nil
	})
	if err != nil {
		log.Error("StoreDeductBalance fail", log.Any("uid", uid), log.Any("orderId", orderId), log.Any("amount", amount), log.Any("source", source))
		return 0, stderr.Failure //通知消息
	}
	return balance, stderr.Success
}

// StoreRefund 商城相关退款
func StoreRefund(uid uint64, amount int64, orderId primitive.ObjectID, source int, desc string) (balance int64, code stderr.Code) {
	w, err := walletmod.GetWallet(uid)
	if err != nil || w == nil {
		return 0, stderr.ErrNetWorkBusy
	}
	var tranType txnmod.TransType
	switch source {
	case StoreGoodsOrderRefund:
		tranType = txnmod.StoreGoodsOrderRefund
	case StoreNudeChatOrderRefund:
		tranType = txnmod.StoreNudeChatOrderRefund
	case StoreWishRefund:
		tranType = txnmod.StoreWishRefund
	default:
		return 0, stderr.ErrParamError
	}
	err = appg.VideoDB.Trans(func(t *db.MongoTool) (err error) {
		wallet, err := walletmod.CreditAmount(t, amount, uid)
		if err != nil {
			log.Error("StoreRefund walletmod.CreditAmount fail", log.Any("uid", uid), log.Any("orderId", orderId), log.Any("amount", amount), log.Any("source", source))
			return
		}
		// 写入流水
		txnLog := &txnmod.TransactionLog{UID: uid,
			Amount:       amount,
			ActualAmount: float64(amount),
			TranType:     tranType.Key(),
			TranTypeInt:  int64(tranType),
			TransNo:      orderId,
			Desc:         desc,
			//DiscDoc:      discDoc,
			//SysType:      u.SysType,
			RealAmount: walletmod.GetRealAmount(wallet),
		}
		err = txnmod.InsertTransactionLog(t, txnLog)
		if err != nil {
			log.Error("StoreRefund txnmod.InsertTransactionLog fail", log.Any("uid", uid), log.Any("orderId", orderId), log.Any("amount", amount), log.Any("source", source))
			return
		}
		balance = wallet.Amount + wallet.Income
		return nil
	})
	if err != nil {
		log.Error("StoreRefund fail", log.Any("uid", uid), log.Any("orderId", orderId), log.Any("amount", amount), log.Any("source", source))
		return 0, stderr.Failure //通知消息
	}
	return balance, stderr.Success
}