Preparation:

Place the secret key (json) of the Firebase service account, which is generated in the Firebase Console project, into this directory.

$ cp path/to/serviceAccountKey.json sample-app-firebase-adminsdk-foobar.json

This program ues the following modules:

• argparse
• json
• requests
• oauth2client

If the required modules are not installed, please install them using the command below:

$ pip install argparse json requests oauth2client

Example:

Ensure you have obtained the device token of the desired recipient device.

Send a push notification by specifying the target device's token using the -d option.

$ python send_test.py -d d9pCrwUARmCyWDRjumG2SS:APA91xxxx 
=== Request ===
Request message:  {
    "message": {
        "token": "d9pCrwUARmCyWDRjumG2SS:APA91xxxxx",
        "notification": {
            "title": "Test Notification",
            "body": "This is a sample notification"
        }
    }
}

=== Response ===
Response status code:  200
Response content:  {
  "name": "projects/sample-app/messages/0:1692853925636648%d2dadecfd2dadecf"
}

Command Options:

• -d DEVICE_TOKEN, --device-token DEVICE_TOKEN: Specify the device token.
• -p PRIVATE_KEY_JSON_FILE, --private-key-json-file PRIVATE_KEY_JSON_FILE: Specify the secret key of the Firebase service account.
• -m MESSAGE_JSON, --message-json MESSAGE_JSON: Specify the json file of the push notification message to be sent.
• -t TITLE, --title TITLE: Specify title to set for the push notification.
• -b BODY, --body BODY: Specify body to set for the push notification.
• -i IMAGE, --image IMAGE: Specify image icon url to set for the push notification.
• --print-access-token: Display the bearer token used for FCM HTTP v1 protocol.

Reference Site:

• Firebase Cloud Messaging REST API
  • https://firebase.google.com/docs/reference/fcm/rest/v1/projects.messages
• Migrate from legacy FCM APIs to HTTP v1
  • https://firebase.google.com/docs/cloud-messaging/migrate-v1