package meituan_cps

import (
	"code.fnuoos.com/go_rely_warehouse/zyos_go_third_party_api.git/comm"
	zhios_third_party_utils "code.fnuoos.com/go_rely_warehouse/zyos_go_third_party_api.git/utils"
	"crypto/hmac"
	"crypto/md5"
	"crypto/sha256"
	"encoding/base64"
	"fmt"
	"strings"
	"time"
)

func Send(method, key, secret string, param map[string]interface{}) (string, error) {
	header := map[string]string{
		"S-Ca-App":       key,
		"S-Ca-Timestamp": zhios_third_party_utils.Int64ToStr(time.Now().Unix() * 1000),
	}
	url := "https://media.meituan.com/cps_open/common/api/v1/"
	paramStr := comm.GetSortJson(param)
	paramStr = strings.ReplaceAll(paramStr, "\n", "")
	header = GetSign(method, secret, paramStr, header)
	fmt.Println(header)
	fmt.Println(paramStr)

	post, err := zhios_third_party_utils.CurlPost(url+method, paramStr, header)
	fmt.Println(string(post))
	fmt.Println(err)
	return string(post), err
}

func GetSign(method, secret string, paramStr string, header map[string]string) map[string]string {
	headers := comm.KsortToStr(header)

	HTTPMethod := "POST"
	h1 := md5.New()
	h1.Write([]byte(paramStr))
	ContentMd5 := base64.StdEncoding.EncodeToString(h1.Sum(nil))
	fmt.Println(ContentMd5)
	headerStr := ""
	signHeader := ""
	for _, v := range headers {
		headerStr += v + ":" + header[v] + "\n"
		if signHeader == "" {
			signHeader += v
		} else {
			signHeader += "," + v
		}
	}

	Url := "/cps_open/common/api/v1/" + method
	sign := HTTPMethod + "\n" + ContentMd5 + "\n" + headerStr + Url
	h := hmac.New(sha256.New, []byte(secret))
	_, _ = h.Write([]byte(sign))
	header["S-Ca-Signature"] = base64.StdEncoding.EncodeToString(h.Sum(nil))
	header["Content-MD5"] = ContentMd5
	header["S-Ca-Signature-Headers"] = signHeader
	header["Content-Type"] = "application/json; charset=utf-8"
	return header
}