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lark.go
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lark.go
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package main
import (
"bytes"
"encoding/json"
"io/ioutil"
"net/http"
)
//Lark provides methods to interact with lark using lark APIs
type Lark interface {
GetAccessToken(appDetails AppDetails) (LarkToken, error)
GetBotGroups(token string) (LarkData, error)
SendMessage(token string, larkMessageRequest LarkMessageRequest) int
}
type larkRequest struct {
client *http.Client
}
var lark Lark
func (lr *larkRequest) GetAccessToken(appDetails AppDetails) (LarkToken, error) {
var token LarkToken
payload, err := json.Marshal(appDetails)
if err != nil {
return token, err
}
req, err := http.NewRequest("POST", "https://open.larksuite.com/open-apis/auth/v3/app_access_token/internal", bytes.NewBuffer(payload))
if err != nil {
return token, err
}
resp, err := lr.client.Do(req)
if err != nil {
return token, err
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return token, err
}
err = json.Unmarshal(body, &token)
if err != nil {
return token, err
}
return token, nil
}
func (lr *larkRequest) GetBotGroups(token string) (LarkData, error) {
var larkData LarkData
req, err := http.NewRequest("GET", "https://open.larksuite.com/open-apis/chat/v4/list", nil)
if err != nil {
return larkData, err
}
req.Header.Add("Authorization", "Bearer "+token)
resp, err := lr.client.Do(req)
if err != nil {
return larkData, err
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return larkData, err
}
err = json.Unmarshal([]byte(body), &larkData)
if err != nil {
return larkData, err
}
return larkData, nil
}
func (lr *larkRequest) SendMessage(token string, larkMessageRequest LarkMessageRequest) int {
payload, err := json.Marshal(larkMessageRequest)
if err != nil {
return http.StatusBadRequest
}
req, err := http.NewRequest("POST", "https://open.larksuite.com/open-apis/message/v4/send/", bytes.NewBuffer(payload))
req.Header.Add("Authorization", "Bearer "+token)
resp, _ := lr.client.Do(req)
return resp.StatusCode
}
//InitLark is used to initialise lark
func InitLark(l Lark) {
lark = l
}