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dingding.go
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dingding.go
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// Package dingding 钉钉机器人
package dingding
import (
"bytes"
"crypto/hmac"
"crypto/sha256"
"encoding/base64"
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"net/http"
"time"
)
type E钉钉机器人 struct {
WebHookUrl string
Secret string
}
type response struct {
Code int `json:"errcode"`
Msg string `json:"errmsg"`
}
func New钉钉机器人(WebHookUrl, secret string) *E钉钉机器人 {
return &E钉钉机器人{WebHookUrl: WebHookUrl, Secret: secret}
}
// E发送文本消息
// text 发送内容
// atIdType 1 atMobiles 2 atUserIds 3 all
// at 传入的手机号或者用户id
func (t *E钉钉机器人) E发送文本消息(text string, atIdType int, at ...string) error {
msg := map[string]interface{}{
"msgtype": "text",
"text": map[string]string{
"content": text,
},
}
if atIdType == 1 {
msg["at"] = map[string]interface{}{
"atMobiles": at,
"isAtAll": false,
}
}
if atIdType == 2 {
msg["at"] = map[string]interface{}{
"atUserIds": at,
"isAtAll": false,
}
}
if atIdType == 3 {
msg["at"] = map[string]interface{}{
"isAtAll": true,
}
}
b, err := json.Marshal(msg)
if err != nil {
return err
}
//fmt.Println("发送数据", bytes.NewBuffer(b).String())
resp, err := http.Post(t.getURL(), "application/json", bytes.NewBuffer(b))
if err != nil {
return err
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return err
}
var r response
err = json.Unmarshal(body, &r)
if err != nil {
return err
}
if r.Code != 0 {
return errors.New(fmt.Sprintf("response error: %s", string(body)))
}
return err
}
// E发送markdown消息
// text 发送内容
// atIdType 1 atMobiles 2 atUserIds 3 all
// at 传入的手机号或者用户id
func (t *E钉钉机器人) E发送markdown消息(title, text string, atIdType int, at ...string) error {
msg := map[string]interface{}{
"msgtype": "markdown",
"markdown": map[string]string{
"title": title,
"text": text,
},
}
if atIdType == 1 {
msg["at"] = map[string]interface{}{
"atMobiles": at,
"isAtAll": false,
}
}
if atIdType == 2 {
msg["at"] = map[string]interface{}{
"atUserIds": at,
"isAtAll": false,
}
}
if atIdType == 3 {
msg["at"] = map[string]interface{}{
"isAtAll": true,
}
}
b, err := json.Marshal(msg)
if err != nil {
return err
}
resp, err := http.Post(t.getURL(), "application/json", bytes.NewBuffer(b))
if err != nil {
return err
}
defer resp.Body.Close()
_, err = ioutil.ReadAll(resp.Body)
return err
}
func (t *E钉钉机器人) hmacSha256(stringToSign string, secret string) string {
h := hmac.New(sha256.New, []byte(secret))
h.Write([]byte(stringToSign))
return base64.StdEncoding.EncodeToString(h.Sum(nil))
}
func (t *E钉钉机器人) getURL() string {
wh := t.WebHookUrl
timestamp := time.Now().UnixNano() / 1e6
stringToSign := fmt.Sprintf("%d\n%s", timestamp, t.Secret)
sign := t.hmacSha256(stringToSign, t.Secret)
url := fmt.Sprintf("%s×tamp=%d&sign=%s", wh, timestamp, sign)
return url
}