package main

import (
	"crypto/hmac"
	"crypto/sha256"
	"encoding/base64"
	"encoding/json"
	"errors"
	"flag"
	"fmt"
	"io/ioutil"
	"log"
	"net/http"
	"net/url"
	"strconv"
	"strings"
	"time"

	"github.com/sirupsen/logrus"
	"github.com/spf13/viper"
	"myschools.me/wyh/dingd.git/model"
	"myschools.me/wyh/dingd.git/service"
)

func main() {
	cf := flag.String("config", "config.yaml", "file of config")
	flag.Parse()
	viper.SetConfigFile(*cf)
	if err := viper.ReadInConfig(); err != nil {
		logrus.WithFields(logrus.Fields{
			"func": "main",
		}).Errorf("%s", err.Error())
		return
	}
	uid := "351313653629177902"
	opid := "351313653629177902"
	service.DingTalkTaskCreate(&uid, &opid)
	// unionid:=UnionidByCode()

	// accesstoken, err := GetAccesstoken()
	// if err != nil {
	// 	log.Fatal(err)
	// }

	// userid, err := GetUseridByUnionid(accesstoken, unionid)
	// if err != nil {
	// 	log.Fatal(err)
	// }
	// userinfo, err := GETUserInfo(accesstoken, userid)
	// if err != nil {
	// 	log.Fatal(err)
	// }
	// fmt.Println(userinfo)
}
func EncodeSHA256(message, secret string) string {
	// 钉钉签名算法实现
	h := hmac.New(sha256.New, []byte(secret))
	h.Write([]byte(message))
	sum := h.Sum(nil) // 二进制流
	message1 := base64.StdEncoding.EncodeToString(sum)

	uv := url.Values{}
	uv.Add("0", message1)
	message2 := uv.Encode()[2:]
	return message2

}

func GetAccesstoken() (accesstoken string, err error) {
	var resp *http.Response
	//var AppKey, AppSecret string
	//获取access_token
	url := fmt.Sprintf("https://oapi.dingtalk.com/gettoken?appkey=%s&appsecret=%s", viper.GetString("app.AppKey"), viper.GetString("app.AppSecret"))
	resp, err = http.Get(url)
	if err != nil {
		return "", err
	}
	//fmt.Println(resp)
	//fmt.Println(err)
	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		return "", err
	}
	var i map[string]interface{}
	_ = json.Unmarshal(body, &i)
	//fmt.Println(1, string(body), i["errmsg"])
	if i["errcode"].(float64) == 0 {
		return i["access_token"].(string), nil
	}
	return "", errors.New("accesstoken获取错误：" + i["errmsg"].(string))

}

func GetUseridByUnionid(accesstoken, unionid string) (userid string, err error) {
	//根据unionid获取userid
	var resp *http.Response
	url := fmt.Sprintf("https://oapi.dingtalk.com/topapi/user/getbyunionid?access_token=%s", accesstoken)
	p := struct {
		Unionid string `json:"unionid"`
	}{unionid} // post数据
	p1, _ := json.Marshal(p)
	p2 := string(p1)
	p3 := strings.NewReader(p2) //构建post数据
	resp, err = http.Post(url, "application/json;charset=UTF-8", p3)
	if err != nil {
		return "", nil
	}
	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		return "", nil
	}
	//fmt.Println(1, string(body), err)
	var i map[string]interface{}
	_ = json.Unmarshal(body, &i)
	errcode := i["errcode"].(float64)
	if errcode != 0 {
		return "", fmt.Errorf("userid获取错误: %f, %s", errcode, i["errmsg"].(string))
	}
	return i["result"].(map[string]interface{})["userid"].(string), nil
}

func GETUserInfo(accesstoken, userid string) (*model.DingtalkUserInfoResponse, error) {
	var resp *http.Response
	url := fmt.Sprintf("https://oapi.dingtalk.com/topapi/v2/user/get?access_token=%s", accesstoken)
	p := struct {
		UserID   string `json:"userid"`
		Language string `json:"language"`
	}{
		UserID:   userid,
		Language: "zh_CN",
	}
	p1, _ := json.Marshal(p)
	p2 := string(p1)
	p3 := strings.NewReader(p2) //构建post数据
	resp, err := http.Post(url, "application/json;charset=UTF-8", p3)
	if err != nil {
		return nil, err
	}
	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		return nil, err
	}
	userinfo := &model.DingtalkUserInfoResponse{}
	_ = json.Unmarshal(body, userinfo)
	errcode := userinfo.ErrCode
	if errcode != 0 {
		log.Fatal("errcode!=0")
	}
	return userinfo, nil
}

func UnionidByCode() string {
	timestamp := strconv.FormatInt(time.Now().UnixNano()/1000000, 10)      // 毫秒时间戳
	signature := EncodeSHA256(timestamp, viper.GetString("app.AppSecret")) // 加密签名  加密算法见我另一个函数
	url := fmt.Sprintf("https://oapi.dingtalk.com/sns/getuserinfo_bycode?accessKey=%s&timestamp=%s&signature=%s",
		viper.GetString("app.AppKey"), timestamp, signature)
	p := struct {
		Tmp_auth_code string `json:"tmp_auth_code"`
	}{viper.GetString("app.AuthCode")} // post数据
	p1, _ := json.Marshal(p)
	p2 := string(p1)
	p3 := strings.NewReader(p2) //构建post数据

	resp, err := http.Post(url, "application/json;charset=UTF-8", p3)
	if err != nil {
		log.Fatal(err)
	}
	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		log.Fatal(err)
	}
	i := make(map[string]interface{})
	_ = json.Unmarshal(body, &i)
	fmt.Println(i)
	errcode := i["errcode"].(float64)
	if errcode != 0 {
		log.Fatal("errcode ==0")
	}
	unionid := i["user_info"].(map[string]interface{})["unionid"].(string)

	return unionid
}