package http

import (
	"fmt"
	"net/http"

	"quyun/providers/wepay"

	"github.com/go-pay/gopay"
	"github.com/go-pay/gopay/wechat/v3"
	"github.com/go-pay/util/js"
	"github.com/gofiber/fiber/v3"
)

type pays struct {
	wepay *wepay.Client
}

// Callback
// @Router			/pay/callback [get]
func (ctl *pays) Callback(ctx fiber.Ctx) error {
	body := ctx.Body()
	si := &wechat.SignInfo{
		HeaderTimestamp: ctx.Get(wechat.HeaderTimestamp),
		HeaderNonce:     ctx.Get(wechat.HeaderNonce),
		HeaderSignature: ctx.Get(wechat.HeaderSignature),
		HeaderSerial:    ctx.Get(wechat.HeaderSerial),
		SignBody:        string(body),
	}
	notifyReq := &wechat.V3NotifyReq{SignInfo: si}
	if err := js.UnmarshalBytes(body, notifyReq); err != nil {
		return ctx.Status(http.StatusBadRequest).JSON(fiber.Map{"error": fmt.Sprintf("json unmarshal error:%v", err)})
	}

	// 获取微信平台证书
	certMap := ctl.wepay.WxPublicKeyMap()

	// 验证异步通知的签名
	err := notifyReq.VerifySignByPKMap(certMap)
	if err != nil {
		return ctx.Status(http.StatusBadRequest).JSON(fiber.Map{"error": "Invalid signature"})
	}

	// TODO: add process order job

	return ctx.Status(http.StatusOK).JSON(&wechat.V3NotifyRsp{
		Code:    gopay.SUCCESS,
		Message: "成功",
	})
}