📦 songquanpeng / message-pusher

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162package channel

import (
	"bytes"
	"encoding/json"
	"errors"
	"fmt"
	"message-pusher/common"
	"message-pusher/model"
	"net/http"
	"strings"
)

type larkAppTokenRequest struct {
	AppID     string `json:"app_id"`
	AppSecret string `json:"app_secret"`
}

type larkAppTokenResponse struct {
	Code              int    `json:"code"`
	Msg               string `json:"msg"`
	TenantAccessToken string `json:"tenant_access_token"`
	Expire            int    `json:"expire"`
}

type LarkAppTokenStoreItem struct {
	AppID       string
	AppSecret   string
	AccessToken string
}

func (i *LarkAppTokenStoreItem) Key() string {
	return i.AppID + i.AppSecret
}

func (i *LarkAppTokenStoreItem) IsShared() bool {
	var count int64 = 0
	model.DB.Model(&model.Channel{}).Where("secret = ? and app_id = ? and type = ?",
		i.AppSecret, i.AppID, model.TypeLarkApp).Count(&count)
	return count > 1
}

func (i *LarkAppTokenStoreItem) IsFilled() bool {
	return i.AppID != "" && i.AppSecret != ""
}

func (i *LarkAppTokenStoreItem) Token() string {
	return i.AccessToken
}

func (i *LarkAppTokenStoreItem) Refresh() {
	// https://open.feishu.cn/document/ukTMukTMukTM/ukDNz4SO0MjL5QzM/auth-v3/auth/tenant_access_token_internal
	tokenRequest := larkAppTokenRequest{
		AppID:     i.AppID,
		AppSecret: i.AppSecret,
	}
	tokenRequestData, err := json.Marshal(tokenRequest)
	responseData, err := http.Post("https://open.feishu.cn/open-apis/auth/v3/tenant_access_token/internal",
		"application/json; charset=utf-8", bytes.NewBuffer(tokenRequestData))
	if err != nil {
		common.SysError("failed to refresh access token: " + err.Error())
		return
	}
	defer responseData.Body.Close()
	var res larkAppTokenResponse
	err = json.NewDecoder(responseData.Body).Decode(&res)
	if err != nil {
		common.SysError("failed to decode larkAppTokenResponse: " + err.Error())
		return
	}
	if res.Code != 0 {
		common.SysError(res.Msg)
		return
	}
	i.AccessToken = res.TenantAccessToken
	common.SysLog("access token refreshed")
}

type larkAppMessageRequest struct {
	ReceiveId string `json:"receive_id"`
	MsgType   string `json:"msg_type"`
	Content   string `json:"content"`
}

type larkAppMessageResponse struct {
	Code int    `json:"code"`
	Msg  string `json:"msg"`
}

func parseLarkAppTarget(target string) (string, string, error) {
	parts := strings.Split(target, ":")
	if len(parts) != 2 {
		return "", "", errors.New("无效的飞书应用号消息接收者参数")
	}
	return parts[0], parts[1], nil
}

func SendLarkAppMessage(message *model.Message, user *model.User, channel_ *model.Channel) error {
	// https://open.feishu.cn/document/uAjLw4CM/ukTMukTMukTM/reference/im-v1/message/create
	rawTarget := message.To
	if rawTarget == "" {
		rawTarget = channel_.AccountId
	}
	targetType, target, err := parseLarkAppTarget(rawTarget)
	if err != nil {
		return err
	}
	request := larkAppMessageRequest{
		ReceiveId: target,
	}
	atPrefix := getLarkAtPrefix(message)
	if message.Description != "" {
		request.MsgType = "text"
		content := larkTextContent{Text: atPrefix + message.Description}
		contentData, err := json.Marshal(content)
		if err != nil {
			return err
		}
		request.Content = string(contentData)
	} else {
		request.MsgType = "interactive"
		content := larkCardContent{}
		content.Config.WideScreenMode = true
		content.Config.EnableForward = true
		content.Elements = append(content.Elements, larkMessageRequestCardElement{
			Tag: "div",
			Text: larkMessageRequestCardElementText{
				Content: atPrefix + message.Content,
				Tag:     "lark_md",
			},
		})
		contentData, err := json.Marshal(content)
		if err != nil {
			return err
		}
		request.Content = string(contentData)
	}
	requestData, err := json.Marshal(request)
	if err != nil {
		return err
	}
	key := fmt.Sprintf("%s%s", channel_.AppId, channel_.Secret)
	accessToken := TokenStoreGetToken(key)
	url := fmt.Sprintf("https://open.feishu.cn/open-apis/im/v1/messages?receive_id_type=%s", targetType)
	req, _ := http.NewRequest("POST", url, bytes.NewReader(requestData))
	req.Header.Set("Authorization", "Bearer "+accessToken)
	req.Header.Set("Content-Type", "application/json; charset=utf-8")
	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		return err
	}
	var res larkAppMessageResponse
	err = json.NewDecoder(resp.Body).Decode(&res)
	if err != nil {
		return err
	}
	if res.Code != 0 {
		return errors.New(res.Msg)
	}
	return nil
}