510 lines
12 KiB
Go
510 lines
12 KiB
Go
package services
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import (
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"context"
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"errors"
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"fmt"
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"github.com/shopspring/decimal"
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wecahtpaycore "github.com/wechatpay-apiv3/wechatpay-go/core"
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"io"
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"log/slog"
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"net/http"
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"platform/pkg/env"
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"platform/pkg/u"
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"platform/web/core"
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bill2 "platform/web/domains/bill"
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coupon2 "platform/web/domains/coupon"
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trade2 "platform/web/domains/trade"
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g "platform/web/globals"
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"platform/web/globals/orm"
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m "platform/web/models"
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q "platform/web/queries"
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"platform/web/tasks"
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"time"
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"github.com/smartwalle/alipay/v3"
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"github.com/wechatpay-apiv3/wechatpay-go/services/payments/native"
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"gorm.io/gorm"
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)
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var Trade = &tradeService{}
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type tradeService struct {
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}
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func (s *tradeService) CreateTrade(q *q.Query, uid int32, now time.Time, data *TradeCreateData) (*TradeCreateResult, error) {
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var subject = data.Subject
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var expire = data.ExpireAt
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var tType = data.Type
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var method = data.Method
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var platform = data.Platform
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var amount = data.Amount
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// 实际支付金额，只在创建真实订单时使用
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var amountReal = data.Amount
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if env.RunMode == "debug" {
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amountReal = decimal.NewFromFloat(0.01)
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}
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// 附加优惠券
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if data.CouponCode != "" {
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coupon, err := q.Coupon.
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Where(
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q.Coupon.Code.Eq(data.CouponCode),
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q.Coupon.Status.Eq(int32(coupon2.StatusUnused)),
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).
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Take()
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if err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return nil, errors.New("优惠券不存在或已失效")
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}
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return nil, err
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}
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var expireAt = time.Time(u.Z(coupon.ExpireAt))
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if !expireAt.IsZero() && expireAt.Before(now) {
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_, err = q.Coupon.
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Where(q.Coupon.ID.Eq(coupon.ID)).
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Update(q.Coupon.Status, coupon2.StatusExpired)
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if err != nil {
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return nil, err
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}
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return nil, errors.New("优惠券已过期")
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}
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if amount.Cmp(coupon.MinAmount) < 0 {
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return nil, errors.New("订单金额未达到使用优惠券的条件")
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}
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if coupon.UserID != nil {
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switch *coupon.UserID {
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// 指定用户的优惠券
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case uid:
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amount = amount.Sub(coupon.Amount)
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if expireAt.IsZero() {
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_, err = q.Coupon.
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Where(q.Coupon.ID.Eq(coupon.ID)).
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Update(q.Coupon.Status, int32(coupon2.StatusUsed))
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if err != nil {
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return nil, err
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}
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}
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// 该优惠券不属于当前用户
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default:
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return nil, errors.New("优惠券不属于当前用户")
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}
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} else {
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// 公开优惠券
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amount = amount.Sub(coupon.Amount)
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}
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}
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// 生成订单号
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tradeNo, err := ID.GenSerial(context.Background())
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if err != nil {
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return nil, err
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}
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// 创建支付订单
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var payUrl string
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switch {
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// 支付宝 + 电脑网站
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case method == trade2.MethodAlipay && platform == trade2.PlatformDesktop:
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resp, err := g.Alipay.TradePagePay(alipay.TradePagePay{
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QRPayMode: "4",
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QRCodeWidth: "196", // 二维码宽度需要-4，支付宝页面布局有问题
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Trade: alipay.Trade{
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ProductCode: "FAST_INSTANT_TRADE_PAY",
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OutTradeNo: tradeNo,
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Subject: subject,
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TotalAmount: amountReal.StringFixed(2),
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TimeExpire: expire.Format("2006-01-02 15:04:05"),
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},
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})
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if err != nil {
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return nil, err
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}
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payUrl = resp.String()
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// 微信 + 电脑网站
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case method == trade2.MethodWeChat && platform == trade2.PlatformDesktop:
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resp, _, err := g.WechatPay.Native.Prepay(context.Background(), native.PrepayRequest{
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Appid: &env.WechatPayAppId,
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Mchid: &env.WechatPayMchId,
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OutTradeNo: &tradeNo,
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Description: &subject,
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TimeExpire: &expire,
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NotifyUrl: &env.WechatPayCallbackUrl,
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Amount: &native.Amount{
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Total: u.P(amountReal.Mul(decimal.NewFromInt(100)).Round(0).IntPart()),
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},
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})
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if err != nil {
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return nil, err
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}
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payUrl = *resp.CodeUrl
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// 商福通 + 电脑网站
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case method == trade2.MethodSft && platform == trade2.PlatformDesktop:
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resp, err := g.SFTPay.PaymentScanPay(&g.PaymentScanPayReq{
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MchOrderNo: tradeNo,
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Subject: subject,
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Body: subject,
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Amount: amountReal.Mul(decimal.NewFromInt(100)).Round(0).IntPart(),
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Currency: "cny",
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ClientIp: "123.52.74.23",
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OrderTimeout: u.P(expire.Format("2006-01-02 15:04:05")),
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})
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if err != nil {
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return nil, err
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}
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payUrl = u.Z(u.Z(resp.PayInfo).QrCodeUrl)
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// 商福通 + 手机网站
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case (method == trade2.MethodSftAlipay || method == trade2.MethodSftWeChat) && platform == trade2.PlatformMobile:
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var payType g.SftPayType
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if method == trade2.MethodSftAlipay {
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payType = g.SftAlipay
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} else {
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payType = g.SftWeChat
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}
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resp, err := g.SFTPay.PaymentH5Pay(&g.PaymentH5PayReq{
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MchOrderNo: tradeNo,
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Subject: subject,
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Body: subject,
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Amount: amountReal.Mul(decimal.NewFromInt(100)).Round(0).IntPart(),
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PayType: payType,
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Currency: "cny",
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ClientIp: "123.52.74.23",
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OrderTimeout: u.P(expire.Format("2006-01-02 15:04:05")),
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})
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if err != nil {
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return nil, err
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}
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payUrl = u.Z(u.Z(resp.PayInfo).PayUrl)
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// 不支持的支付方式
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default:
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slog.Warn(ErrTransactionNotSupported.Error(), "method", method, "platform", platform)
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return nil, ErrTransactionNotSupported
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}
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// 保存交易订单
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var trade = m.Trade{
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UserID: uid,
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InnerNo: tradeNo,
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Subject: subject,
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Type: int32(tType),
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Method: int32(method),
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Platform: int32(platform),
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Amount: amount,
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PayURL: &payUrl,
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}
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err = q.Trade.Create(&trade)
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if err != nil {
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return nil, err
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}
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// 保存用户帐单
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var billType bill2.Type
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switch tType {
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case trade2.TypeRecharge:
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billType = bill2.TypeRecharge
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case trade2.TypePurchase:
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billType = bill2.TypeConsume
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}
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var bill = m.Bill{
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BillNo: ID.GenReadable("bil"),
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UserID: uid,
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TradeID: &trade.ID,
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Info: &subject,
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Type: int32(billType),
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Amount: amount,
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}
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err = q.Bill.
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Omit(q.Bill.ResourceID, q.Bill.RefundID).
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Create(&bill)
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if err != nil {
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return nil, err
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}
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// 提交异步任务更新订单状态
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_, err = g.Asynq.Enqueue(tasks.NewUpdateTrade(tradeNo, method))
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if err != nil {
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return nil, err
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}
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return &TradeCreateResult{
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TradeNo: tradeNo,
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PayURL: payUrl,
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Bill: &bill,
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Trade: &trade,
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}, nil
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}
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func (s *tradeService) OnTradeCreated(q *q.Query, data *OnTradeCreateData) (*m.Trade, error) {
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var transId = data.TransId
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var tradeNo = data.TradeNo
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var payment = data.Payment
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var paidAt = data.Time
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var acquirer = data.Acquirer
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// 获取交易信息
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trade, err := q.Trade.
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Where(q.Trade.InnerNo.Eq(tradeNo)).
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First()
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if err != nil {
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return nil, err
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}
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// 检查交易状态
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switch trade2.Status(trade.Status) {
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// 如果已退款或取消，则返回错误
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case trade2.StatusCanceled, trade2.StatusRefunded:
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return nil, errors.New("交易已取消或已退款")
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// 如果是未支付，则更新支付状态
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case trade2.StatusPending:
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trade.Status = int32(trade2.StatusSuccess)
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trade.OuterNo = &transId
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trade.Payment = payment
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trade.Acquirer = u.P(int32(acquirer))
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trade.PaidAt = u.P(orm.LocalDateTime(paidAt))
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trade.PayURL = u.P("")
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_, err = q.Trade.
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Where(q.Trade.ID.Eq(trade.ID)).
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Updates(trade)
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if err != nil {
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return nil, err
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}
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case trade2.StatusSuccess:
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}
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return trade, nil
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}
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func (s *tradeService) CancelTrade(tradeNo string, method trade2.Method) error {
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switch method {
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case trade2.MethodAlipay:
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resp, err := g.Alipay.TradeCancel(context.Background(), alipay.TradeCancel{
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OutTradeNo: tradeNo,
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})
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if err != nil {
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return err
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}
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if resp.Code != alipay.CodeSuccess {
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slog.Warn("支付宝交易取消失败", "code", resp.Code, "sub_code", resp.SubCode, "msg", resp.Msg)
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return errors.New("交易取消失败")
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}
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case trade2.MethodWeChat:
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resp, err := g.WechatPay.Native.CloseOrder(context.Background(), native.CloseOrderRequest{
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Mchid: &env.WechatPayMchId,
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OutTradeNo: &tradeNo,
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})
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if err != nil {
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return err
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}
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if resp.Response.StatusCode != http.StatusNoContent {
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body, _ := io.ReadAll(resp.Response.Body)
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slog.Warn("微信交易取消失败", "code", resp.Response.StatusCode, "body", string(body))
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return errors.New("交易取消失败")
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}
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case trade2.MethodSft:
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resp, err := g.SFTPay.OrderClose(&g.OrderCloseReq{
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MchOrderNo: &tradeNo,
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})
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if err != nil {
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return err
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}
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if resp.State != "TRADE_CLOSE" {
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slog.Warn("商福通交易取消失败", "state", resp.State)
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return errors.New("交易取消失败")
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}
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default:
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return ErrTransactionNotSupported
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}
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return nil
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}
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func (s *tradeService) OnTradeCanceled(q *q.Query, tradeNo string, now time.Time) error {
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_, err := q.Trade.
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Where(q.Trade.InnerNo.Eq(tradeNo)).
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Select(q.Trade.Status, q.Trade.CancelAt, q.Trade.PayURL).
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Updates(m.Trade{
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Status: int32(trade2.StatusCanceled),
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CancelAt: u.P(orm.LocalDateTime(now)),
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PayURL: u.P(""),
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})
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if err != nil {
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return err
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}
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return nil
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}
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func (s *tradeService) SendRefundTrade(tradeNo string, method trade2.Method) error {
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panic("todo")
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}
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func (s *tradeService) OnTradeRefunded(q *q.Query, tradeNo string, now time.Time) error {
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panic("todo")
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}
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func (s *tradeService) VerifyTrade(data *TradeVerifyData) (*TradeSuccessResult, error) {
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var tradeNo = data.TradeNo
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var method = data.Method
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// 检查交易号是否存在
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var transId string
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var paidAt time.Time
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var payment decimal.Decimal
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switch method {
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// 检查支付宝交易
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case trade2.MethodAlipay:
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resp, err := g.Alipay.TradeQuery(context.Background(), alipay.TradeQuery{
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OutTradeNo: tradeNo,
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})
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if err != nil {
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return nil, err
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}
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if resp.Code != alipay.CodeSuccess {
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slog.Warn("支付宝交易查询失败", "code", resp.Code, "sub_code", resp.SubCode, "msg", resp.Msg)
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return nil, errors.New("交易查询失败")
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}
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if resp.TradeStatus != alipay.TradeStatusSuccess {
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return nil, ErrTransactionNotPaid
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}
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transId = resp.TradeNo
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payment, err = decimal.NewFromString(resp.TotalAmount)
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if err != nil {
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return nil, err
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}
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paidAt, err = time.Parse("2006-01-02 15:04:05", resp.SendPayDate)
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if err != nil {
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return nil, err
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}
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// 检查微信交易
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case trade2.MethodWeChat:
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resp, _, err := g.WechatPay.Native.QueryOrderByOutTradeNo(context.Background(), native.QueryOrderByOutTradeNoRequest{
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OutTradeNo: &tradeNo,
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Mchid: &env.WechatPayMchId,
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})
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if err != nil {
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var apiErr *wecahtpaycore.APIError
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if errors.As(err, &apiErr) {
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if apiErr.Code == "ORDER_NOT_EXIST" {
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return nil, ErrTransactionNotPaid
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}
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return nil, core.NewServErr(
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fmt.Sprintf("微信上游接口异常：code=%v，message=%v", apiErr.Code, apiErr.Message),
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apiErr,
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)
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}
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return nil, err
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}
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if *resp.TradeState != "SUCCESS" {
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return nil, core.NewServErr(
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fmt.Sprintf("预期之外的支付未完成：state=%v, stateDesc=%v", resp.TradeState, resp.TradeStateDesc),
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)
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}
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transId = *resp.TransactionId
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payment = decimal.NewFromInt(*resp.Amount.PayerTotal).Div(decimal.NewFromInt(100))
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paidAt, err = time.Parse(time.RFC3339, *resp.SuccessTime)
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if err != nil {
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return nil, err
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}
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// 检查商福通交易
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case trade2.MethodSft, trade2.MethodSftAlipay, trade2.MethodSftWeChat:
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resp, err := g.SFTPay.QueryTrade(&g.QueryTradeReq{
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MchOrderNo: &tradeNo,
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})
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if err != nil {
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return nil, err
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}
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if resp.State != g.SftTradeSuccess {
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return nil, ErrTransactionNotPaid
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}
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if resp.PayOrderId == nil {
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return nil, errors.New("商福通交易号不存在")
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}
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if resp.PayTime == nil {
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return nil, errors.New("商福通交易时间不存在")
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}
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transId = *resp.PayOrderId
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payment = decimal.NewFromInt(resp.Amount).Div(decimal.NewFromInt(100))
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paidAt, err = time.Parse("2006-01-02 15:04:05", *resp.PayTime)
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if err != nil {
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return nil, err
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}
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// 不支持的支付方式
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default:
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return nil, ErrTransactionNotSupported
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}
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return &TradeSuccessResult{
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TransId: transId,
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Payment: payment,
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Time: paidAt,
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}, nil
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}
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type TradeCreateData struct {
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Subject string
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Amount decimal.Decimal
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ExpireAt time.Time
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Type trade2.Type
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Method trade2.Method
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Platform trade2.Platform
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CouponCode string
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}
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type TradeCreateResult struct {
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TradeNo string
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PayURL string
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Bill *m.Bill
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Trade *m.Trade
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}
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type TradeVerifyData struct {
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TradeNo string
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Method trade2.Method
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}
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type TradeSuccessResult struct {
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TransId string
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Payment decimal.Decimal
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Time time.Time
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Acquirer trade2.Acquirer
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}
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type OnTradeCreateData struct {
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TradeNo string
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TradeSuccessResult
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}
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type TradeErr string
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func (e TradeErr) Error() string {
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return string(e)
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}
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var (
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ErrTransactionNotPaid = core.NewBizErr("交易未支付")
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ErrTransactionNotSupported = core.NewBizErr("不支持的支付方式")
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)
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