Currently, I'm wondering if it's possible to create a chat-like mechanism (server story) with an application that I'm developing personally and deliver push notifications to specified users and topics when data is added to the Firebase Database. I tried it.
The original story is Send push notifications from iOS client in Firebase.
I did it in Python because Node.js can't (deploy implementation).
--Python 3.5.2 (I forgot to put 3.6)
AppDelegate.swift
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
let settings = UIUserNotificationSettings(types: [.alert, .badge, .sound],
categories: nil)
application.registerUserNotificationSettings(settings)
application.registerForRemoteNotifications()
}
func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
//APNS registration
#if DEBUG
FIRInstanceID.instanceID().setAPNSToken(deviceToken, type: .sandbox)
#else
FIRInstanceID.instanceID().setAPNSToken(deviceToken, type: .prod)
#endif
}
func application(_ application: UIApplication, didRegister notificationSettings: UIUserNotificationSettings) {
//Sign up for a topic
FIRMessaging.messaging().subscribe(toTopic: "/topics/news")
}
Do a hoge for later push notifications!
Hoge.swift
class Hoge: NSObject {
class func create() {
let ref = FIRDatabase.database().reference()
let data: [String : String] = ["title": "title", "body": "Text"]
ref("message").childByAutoId().setValue(data, withCompletionBlock: { (error, reference) in
if error != nil {
print("Success")
} else {
print("Failure")
}
}
}
}
THE miscellaneous, but it's like this
requirements.txt
docutils==0.13.1
gcloud==0.17.0
googleapis-common-protos==1.5.0
httplib2==0.9.2
jws==0.1.3
lockfile==0.12.2
oauth2client==3.0.0
protobuf==3.2.0rc1
pyasn1==0.1.9
pyasn1-modules==0.0.8
pycryptodome==3.4.3
Pyrebase==3.0.27
python-daemon==2.1.2
python-jwt==2.0.1
requests==2.11.1
requests-toolbelt==0.7.0
rsa==3.4.2
six==1.10.0
app.py
import daemon
import json
import pyrebase
import requests
config = {
# GoogleService-info.plist API_KEY
"apiKey": "API_KEY",
"authDomain": "PROJECT_NAME",
"databaseURL": "https://PROJECT_NAME.firebaseio.com/",
#May not be needed
"storageBucket": "gs://PROJECT_NAME.appspot.com"
}
fcm_header = {
'Content-type': 'application/json; charset=UTF-8',
#See the image below this code!
'Authorization': 'key=API_KEY'
}
firebase = pyrebase.initialize_app(config)
def stream_handler(message):
if message['data'] == None:
return
if message['path'] == '/':
return
if 'title' in message['data']:
title = message['data']['title']
else:
title = 'Delivery'
if 'body' in message['data']:
body = message['data']['body']
else:
body = ''
payload = {'to': '/topics/news',
'priority': 'high',
'notification': {
'title': title,
'body': body,
'badge': 1,
'sound': 'default'
}
}
r = requests.post('https://fcm.googleapis.com/fcm/send', headers = fcm_header, data = json.dumps(payload))
print(r.json())
if __name__ == '__main__':
db = firebase.database()
dc = daemon.DaemonContext()
with dc:
stream = db.child("message").stream(stream_handler)
(Please protect your privacy !!)
The Python package uses Pyrebase
and python-daemon
.
$ pip install pyrebase python-daemon
I'm going to look at the / message
directory in the Firebase Database.
if message['data'] == None:
return
if message['path'] == '/':
return
This is an exception handling because an error occurred (?) When there was no data in / message
. Even though a push notification is sent when the monitoring code is started, the notification is coming to the iOS side, but the alert is not displayed! I put it in because there was something like that.
All you have to do is run the script on the server side.
By the way, using python-daemon
will daemonize the script! Thank you very much!
$ python app.py
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