package reward

import (
	"context"
	"crypto/md5"
	"encoding/hex"
	"fmt"
	"github.com/gogf/gf/v2/frame/g"
	"server/api/reward/v1"
	"strings"
)

func (c *ControllerV1) Callback(ctx context.Context, req *v1.CallbackReq) (res *v1.CallbackRes, err error) {
	fromCtx := g.RequestFromCtx(ctx)
	appid := fromCtx.Header.Get("Custom-Data-Appid")
	timestamp := fromCtx.Header.Get("Custom-Data-Timestamp")
	nonce := fromCtx.Header.Get("Custom-Data-Nonce")
	auth := fromCtx.Header.Get("Custom-Data-Auth")

	data := fmt.Sprintf("%s%s%s%s%d%d%d%s%s%s#%s", req.Uid, req.OrderId, req.PrizeChannelId, req.PrizeId, req.PrizeType, req.PrizeSubType, req.Num, appid, timestamp, nonce, auth)
	stateOri := md5.Sum([]byte(data))
	state := hex.EncodeToString(stateOri[:])
	myAuth := strings.ToUpper(state)
	if myAuth != auth {
		return &v1.CallbackRes{Errcode: 252151000, OrderId: req.OrderId, Datas: []v1.CallbackData{{PrizeCode: req.OrderId}}}, err
	}
	return &v1.CallbackRes{Errcode: 0, OrderId: req.OrderId, Datas: []v1.CallbackData{{PrizeCode: req.OrderId}}}, err
}