package sf

import (
	"crypto/md5"
	"encoding/base64"
	"encoding/json"
	"fmt"
	"github.com/go-resty/resty/v2"
	"github.com/google/uuid"
	"net/url"
	"time"
)

func (c *Client) GetMsgDigest(msgData_ti string) string {

	// 将业务报文+时间戳+校验码组合成需加密的字符串
	toVerifyText := msgData_ti + c.CheckWord

	// URL 编码处理
	toVerifyText = url.QueryEscape(toVerifyText)

	// 进行 MD5 加密
	hash := md5.Sum([]byte(toVerifyText))

	// 通过 Base64 生成数字签名
	msgDigest := base64.StdEncoding.EncodeToString(hash[:])

	fmt.Println(msgDigest)
	return msgDigest
}

type Client struct {
	PartnerID   string //合作伙伴编码（即顾客编码）
	CheckWord   string //校验码
	MonthlyCard string // 月结账号
	IsBox       bool   // 是否为沙箱环境
}

func NewClient(PartnerID, CheckWord, MonthlyCard string, IsBox bool) *Client {
	client := &Client{
		PartnerID:   PartnerID,
		CheckWord:   CheckWord,
		MonthlyCard: MonthlyCard,
		IsBox:       IsBox,
	}
	return client
}

// body可传map,结构体
func (c *Client) Send(serverid string, body interface{}) (bd string, err error) {
	myurl := ""

	myurl += "?partnerID=" + c.PartnerID
	myurl += "&requestID=" + uuid.New().String()
	myurl += "&serviceCode=" + serverid
	//获取时间戳并拼接
	ti := fmt.Sprintf("%v", time.Now().Unix()*1000)
	myurl += "&timestamp=" + ti
	//把结构体转成json字符串，再生成签名
	by, _ := json.Marshal(body)
	msgdata := string(by)

	//fmt.Println(md5s)
	myurl += "&msgDigest=" + c.GetMsgDigest(msgdata+ti)

	myurl += "&msgData=" + msgdata

	//return a.发送(myurl, "")
	order_url := BASE_URL
	if c.IsBox {
		order_url = BASE_URL_SBOX
	}
	by, err = c.POST(order_url+myurl, "")
	if err != nil {
		return
	}
	res := new(Response)
	if err = json.Unmarshal(by, res); err != nil {
		return
	}
	bd = res.ApiResultData
	return
}

// application/x-www-form-urlencoded类型请求发送
func (c *Client) POST(url, body string) ([]byte, error) {

	client := resty.New()

	resp, err := client.R().
		SetHeader("Content-Type", "application/x-www-form-urlencoded").
		SetBody(body).Post(url)
	if err != nil {
		return nil, err
	}
	return resp.Body(), nil

}