package pay

import (
	"encoding/json"
	"time"
	"yunyan/comm"
	"yunyan/pb"
	"yunyan/sys/pay/alipay"
	"yunyan/sys/pay/appleiap"
	"yunyan/sys/pay/googleiap"
	"yunyan/sys/pay/paypal"
	"yunyan/sys/pay/wechat"
)

// @Summary 创建支付订单
// @Description 创建支付订单并返回支付信息
// @Tags Pay
// @Accept  json
// @Produce  json
// @Security BearerAuth
// @Param order body pb.PayCreatePayOrderReq true "订单信息"
// @Success 200 {object} comm.HttpResult{data=pb.PayCreatePayOrderResp} "支付订单信息"
// @Router /api/home/pay_createorder [post]
func (this *apiComp) CreateOrder(session comm.IUserSession, req *pb.PayCreatePayOrderReq) (resp *pb.PayCreatePayOrderResp, errdata *pb.ErrorData) {
	var (
		osrderNo        string
		appPayParams    *wechat.AppPayParams
		alipayPayParams string
		paypalPayParams string
		err             error
	)
	resp = &pb.PayCreatePayOrderResp{
		Orderid:     osrderNo,
		ProductId:   req.ProductId,
		ProductName: req.ProductName,
	}
	if req.PaymentMethod == pb.PaymentMethod_WxAPP {
		osrderNo = wechat.GenerateOrderNo("WxAPP")
		if appPayParams, err = wechat.CreateAppOrder(session, osrderNo, req.Amount, req.ProductName, req.NotifyUrl); err != nil {
			errdata = &pb.ErrorData{
				Code:    pb.ErrorCode_PayCreateOrderFail,
				Message: "创建微信支付订单失败:" + err.Error(),
			}
			return
		}
		resp.PayParams = &pb.AppPayParams{
			Appid:     appPayParams.AppID,
			Partnerid: appPayParams.PartnerID,
			Prepayid:  appPayParams.PrepayID,
			Package:   appPayParams.Package,
			Noncestr:  appPayParams.NonceStr,
			Timestamp: appPayParams.TimeStamp,
			Sign:      appPayParams.Sign,
		}
	} else if req.PaymentMethod == pb.PaymentMethod_Alipay {
		osrderNo = alipay.GenerateOrderNo("Alipay")
		if alipayPayParams, err = alipay.CreateAppOrder(session, osrderNo, req.Amount, req.ProductName, req.NotifyUrl); err != nil {
			errdata = &pb.ErrorData{
				Code:    pb.ErrorCode_PayCreateOrderFail,
				Message: "创建微信支付订单失败:" + err.Error(),
			}
			return
		}
		resp.AlipayPayParams = alipayPayParams
	} else if req.PaymentMethod == pb.PaymentMethod_PayPal {
		osrderNo = paypal.GenerateOrderNo("PayPal")
		if paypalPayParams, err = paypal.CreateAppOrder(session, osrderNo, req.Amount, req.ProductName, req.ReturnUrl, req.CancelUrl); err != nil {
			errdata = &pb.ErrorData{
				Code:    pb.ErrorCode_PayCreateOrderFail,
				Message: "创建PayPal支付订单失败:" + err.Error(),
			}
			return
		}
		// CreateAppOrder 返回 JSON 字符串，包含 order_id 和 links
		resp.PaypalPayParams = paypalPayParams
	} else if req.PaymentMethod == pb.PaymentMethod_AppleIAP {
		osrderNo = appleiap.GenerateOrderNo("AppleIAP")
	} else if req.PaymentMethod == pb.PaymentMethod_GoogleIAP {
		osrderNo = googleiap.GenerateOrderNo("GoogleIAP")
	} else {
		errdata = &pb.ErrorData{
			Code:    pb.ErrorCode_PayCreateOrderFail,
			Message: "不支持的支付方式",
		}
		return
	}
	// this.module.Debugf("CreateOrder appPayParams:%v", appPayParams)
	// 如果是 PayPal，解析并保存第三方订单号（用于后续 capture）
	var paypalOrderID string
	if req.PaymentMethod == pb.PaymentMethod_PayPal && paypalPayParams != "" {
		var m map[string]any
		if json.Unmarshal([]byte(paypalPayParams), &m) == nil {
			if v, ok := m["order_id"].(string); ok {
				paypalOrderID = v
			}
		}
	}

	// 来源设备快照：客户端带的「当前使用设备」优先，否则回退用户最后绑定设备。
	// 下单即冻结，月结算按它把订单归到品牌商/渠道商名下。
	src := this.resolveOrderSource(session.GetUserId(), req.Devicemac, req.License)
	if err = this.module.model.createPayOrder(&pb.DBPayOrder{
		OrderId:       osrderNo,
		SrcLicense:    src.License,
		SrcMac:        src.Mac,
		SrcProductid:  src.ProductId,
		SrcBrandid:    src.BrandId,
		SrcChannelid:  src.ChannelId,
		Uid:           session.GetUserId(),
		ProductId:     req.ProductId,
		ProductName:   req.ProductName,
		Amount:        req.Amount,
		PaymentMethod: req.PaymentMethod,
		Status:        pb.PayOrderStatus_PAY_ORDER_PENDING,
		TransactionId: paypalOrderID,
		CreateTime:    time.Now().Unix(),
	}); err != nil {
		errdata = &pb.ErrorData{
			Code:    pb.ErrorCode_PayCreateOrderFail,
			Message: "创建支付订单失败:" + err.Error(),
		}
		return
	}
	// 订单创建埋点：与订单快照同源（来源设备的产品/渠道商），保证统计与结算口径一致。
	if this.module.analyze != nil {
		this.module.analyze.Report(&comm.StatEvent{
			Type:      comm.StatEventOrderCreate,
			ProductId: src.ProductId,
			ChannelId: src.ChannelId,
			Uid:       session.GetUserId(),
			Amount:    req.Amount,
		})
	}
	resp.Orderid = osrderNo
	return
}