package tencentyun

import (
	"bytes"
	"encoding/json"
	"fmt"
	"hilo-micCenter/common/config"
	"io/ioutil"
	"math/rand"
	"net/http"
	"strconv"
	"strings"

	"github.com/sirupsen/logrus"
	"github.com/tencentyun/tls-sig-api-v2-golang/tencentyun"
)

const (
	timUrl     = "https://console.tim.qq.com/v4"
	overseaUrl = "https://adminapiger.im.qcloud.com/v4"

	basicParameters = "sdkappid={appid}&identifier=administrator&usersig={userSig}&random={random}&contenttype=json"

	sendSystemMsgUrl        = timUrl + "/group_open_http_svc/send_group_system_notification?" + basicParameters
	overseaSendSystemMsgUrl = overseaUrl + "/group_open_http_svc/send_group_system_notification?" + basicParameters
)

func getAdminSig() (string, error) {
	return tencentyun.GenSig(config.GetTencentyunAppId(), config.GetTencentyunKey(), "administrator", 86400*180)
}

func getOverseaAdminSig() (string, error) {
	return tencentyun.GenSig(config.GetTxOverSeaAppId(), config.GetTxOverSeaAppKey(), "administrator", 86400*180)
}

// RespStruct 基本的返回结构
type RespStruct struct {
	ActionStatus string
	ErrorCode    int
	ErrorInfo    string
}

func SendSystemMsg(logger *logrus.Entry, groupId string, members []string, content string) error {
	if config.AppIsRelease() {
		return SendSystemMsgBy(logger, groupId, members, content, overseaSendSystemMsgUrl,
			func() (string, error) {
				return getOverseaAdminSig()
			}, config.GetTxOverSeaAppId())
	} else {
		return SendSystemMsgBy(logger, groupId, members, content, sendSystemMsgUrl,
			func() (string, error) {
				return getAdminSig()
			}, config.GetTencentyunAppId())
	}
}
func SendSystemMsgBy(logger *logrus.Entry, txGroupId string, members []string, content string, reqUrl string, getAdminSig func() (string, error), appId int) error {
	logger = logger.WithField("appId", appId).WithField("txGroupId", txGroupId)
	//logger.Infof("SendSystemMsg content: %s", content)
	//beginTime := time.Now()

	type BodyStruct struct {
		GroupId           string
		ToMembers_Account []string
		Content           string
	}

	sig, err := getAdminSig()
	if err != nil {
		return err
	}
	url := strings.ReplaceAll(strings.ReplaceAll(strings.ReplaceAll(reqUrl,
		"{appid}", strconv.Itoa(appId)),
		"{userSig}", sig),
		"{random}", strconv.FormatUint(uint64(rand.Uint32()), 10))

	body := BodyStruct{
		GroupId:           txGroupId,
		ToMembers_Account: members,
		Content:           content,
	}

	jsonStr, err := json.Marshal(body)
	if err != nil {
		return err
	}

	rsp, err := http.Post(url, "application/json", bytes.NewBuffer(jsonStr))
	if err != nil {
		return err
	}
	defer rsp.Body.Close()

	result, err := ioutil.ReadAll(rsp.Body)
	if err != nil {
		return err
	}

	response := RespStruct{}
	if err := json.Unmarshal(result, &response); err != nil {
		return err
	}

	//endTime := time.Now()
	//logger.Infof("SendSystemMsg takes %dms: rsp: %+v", endTime.Sub(beginTime).Milliseconds(), response)

	if response.ErrorCode == 0 {
		return nil
	} else {
		return fmt.Errorf("tencentyun SendSystemMsg rsp ErrorCode:%v, ErrorInfo:%v", response.ErrorCode, response.ErrorInfo)
	}
}