forked from nyaruka/courier
-
Notifications
You must be signed in to change notification settings - Fork 0
/
firebase.go
223 lines (187 loc) · 6.26 KB
/
firebase.go
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
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
package firebase
import (
"bytes"
"context"
"encoding/json"
"fmt"
"net/http"
"time"
"github.com/buger/jsonparser"
"github.com/nyaruka/courier"
"github.com/nyaruka/courier/handlers"
"github.com/nyaruka/courier/utils"
"github.com/nyaruka/gocommon/urns"
"github.com/pkg/errors"
)
const (
configTitle = "FCM_TITLE"
configNotification = "FCM_NOTIFICATION"
configKey = "FCM_KEY"
)
var (
sendURL = "https://fcm.googleapis.com/fcm/send"
msgSize = 1024
)
func init() {
courier.RegisterHandler(newHandler())
}
type handler struct {
handlers.BaseHandler
}
func newHandler() courier.ChannelHandler {
return &handler{handlers.NewBaseHandler(courier.ChannelType("FCM"), "Firebase")}
}
func (h *handler) Initialize(s courier.Server) error {
h.SetServer(s)
err := s.AddHandlerRoute(h, http.MethodPost, "receive", h.ReceiveMessage)
if err != nil {
return err
}
return s.AddHandlerRoute(h, http.MethodPost, "register", h.RegisterContact)
}
type receiveForm struct {
From string `name:"from" validate:"required"`
Msg string `name:"msg"`
FCMToken string `name:"fcm_token"`
Date string `name:"date"`
Name string `name:"name"`
}
// ReceiveMessage is our HTTP handler function for incoming messages
func (h *handler) ReceiveMessage(ctx context.Context, channel courier.Channel, w http.ResponseWriter, r *http.Request) ([]courier.Event, error) {
form := &receiveForm{}
err := handlers.DecodeAndValidateForm(form, r)
if err != nil {
return nil, courier.WriteAndLogRequestError(ctx, w, r, channel, err)
}
date := time.Now().UTC()
if form.Date != "" {
date, err = time.Parse("2006-01-02T15:04:05.000", form.Date)
if err != nil {
return nil, courier.WriteAndLogRequestError(ctx, w, r, channel, fmt.Errorf("unable to parse date: %s", form.Date))
}
}
// create our URN
urn := urns.NewFirebaseURN(form.From)
// build our msg
dbMsg := h.Backend().NewIncomingMsg(channel, urn, form.Msg).WithReceivedOn(date).WithContactName(form.Name).WithURNAuth(form.FCMToken)
// queue our message
err = h.Backend().WriteMsg(ctx, dbMsg)
if err != nil {
return nil, err
}
return []courier.Event{dbMsg}, courier.WriteMsgSuccess(ctx, w, r, []courier.Msg{dbMsg})
}
type registerForm struct {
URN string `name:"urn" validate:"required"`
FCMToken string `name:"fcm_token" validate:"required"`
Name string `name:"name"`
}
// RegisterContact is our HTTP handler function for when a contact is registered (or renewed)
func (h *handler) RegisterContact(ctx context.Context, channel courier.Channel, w http.ResponseWriter, r *http.Request) ([]courier.Event, error) {
form := ®isterForm{}
err := handlers.DecodeAndValidateForm(form, r)
if err != nil {
return nil, courier.WriteAndLogRequestError(ctx, w, r, channel, err)
}
// create our URN
urn := urns.NewFirebaseURN(form.URN)
// create our contact
contact, err := h.Backend().GetContact(ctx, channel, urn, form.FCMToken, form.Name)
if err != nil {
return nil, err
}
// return our contact UUID
w.Header().Set("Content-Type", "application/json")
err = json.NewEncoder(w).Encode(map[string]string{"contact_uuid": contact.UUID().String()})
return nil, err
}
type mtPayload struct {
Data struct {
Type string `json:"type"`
Title string `json:"title"`
Message string `json:"message"`
MessageID int64 `json:"message_id"`
} `json:"data"`
Notification *mtNotification `json:"notification,omitempty"`
QuickReplies []mtQuickReply `json:"quick_replies,omitempty"`
ContentAvailable bool `json:"content_available"`
To string `json:"to"`
Priority string `json:"priority"`
}
type mtNotification struct {
Title string `json:"title"`
Body string `json:"body"`
}
type mtQuickReply struct {
Title string `json:"title"`
Payload string `json:"payload"`
}
// SendMsg sends the passed in message, returning any error
func (h *handler) SendMsg(ctx context.Context, msg courier.Msg) (courier.MsgStatus, error) {
title := msg.Channel().StringConfigForKey(configTitle, "")
if title == "" {
return nil, fmt.Errorf("no FCM_TITLE set for FCM channel")
}
fcmKey := msg.Channel().StringConfigForKey(configKey, "")
if fcmKey == "" {
return nil, fmt.Errorf("no FCM_KEY set for FCM channel")
}
configNotification := msg.Channel().ConfigForKey(configNotification, false)
notification, _ := configNotification.(bool)
status := h.Backend().NewMsgStatusForID(msg.Channel(), msg.ID(), courier.MsgErrored)
for i, part := range handlers.SplitMsg(handlers.GetTextAndAttachments(msg), msgSize) {
payload := mtPayload{}
payload.Data.Type = "rapidpro"
payload.Data.Title = title
payload.Data.Message = part
payload.Data.MessageID = msg.ID().Int64
payload.To = msg.URNAuth()
payload.Priority = "high"
if notification {
payload.Notification = &mtNotification{
Title: title,
Body: part,
}
payload.ContentAvailable = true
}
if len(msg.QuickReplies()) > 0 {
quickReplies := make([]mtQuickReply, len(msg.QuickReplies()))
for i, qr := range msg.QuickReplies() {
quickReplies[i].Title = qr
quickReplies[i].Payload = qr
}
payload.QuickReplies = quickReplies
}
jsonPayload, err := json.Marshal(payload)
if err != nil {
return nil, err
}
req, err := http.NewRequest(http.MethodPost, sendURL, bytes.NewReader(jsonPayload))
req.Header.Set("Content-Type", "application/json")
req.Header.Set("Accept", "application/json")
req.Header.Set("Authorization", fmt.Sprintf("key=%s", fcmKey))
rr, err := utils.MakeHTTPRequest(req)
log := courier.NewChannelLogFromRR("Message Sent", msg.Channel(), msg.ID(), rr).WithError("Message Send Error", err)
status.AddLog(log)
if err != nil {
return status, nil
}
// was this successful
success, _ := jsonparser.GetInt(rr.Body, "success")
if success != 1 {
log.WithError("Message Send Error", errors.Errorf("received non-1 value for success in response"))
return status, nil
}
// grab the id if this is our first part
if i == 0 {
externalID, err := jsonparser.GetInt(rr.Body, "multicast_id")
if err != nil {
log.WithError("Message Send Error", errors.Errorf("unable to get multicast_id from response"))
return status, nil
}
status.SetExternalID(fmt.Sprintf("%d", externalID))
}
}
status.SetStatus(courier.MsgWired)
return status, nil
}