==================
Firebase Messaging
==================

A library to subscribe to GCM/FCM and receive notifications within a python application.

When should I use `firebase-messaging` ?
----------------------------------------

- I want to **receive** push notifications sent using Firebase Cloud Messaging in a python application.

When should I not use `firebase-messaging` ?
--------------------------------------------

- I want to **send** push notifications (use the firebase SDK instead)
- My application is running on a FCM supported platform (Android, iOS, Web).

Install
-------

PyPi::

    $ pip install firebase-messaging


Requirements
------------

- Firebase configuration to receive notifications

Usage
-----

Must be run inside an asyncio event loop.

python::

    from firebase_messaging import FcmPushClient, FcmRegisterConfig

    def on_notification(obj, notification, data_message):
        # Do something with the notification
        pass

    credentials = None  # Start off with none or load from previous save
    def on_credentials_updated(creds):
        # save the credentials to a file here for future use

    fcm_config = FcmRegisterConfig(fcm-project-id, fcm-app-id, fcm-api-key, fcm-message-sender-id)
    pc = FcmPushClient(on_notification, fcm_config, credentials, on_credentials_updated)
    fcm_token = await pc.checkin_or_register()

    await pc.start()

    # Adapt the following for your usage
    while some_condition_to_keep_listening:
        asyncio.sleep(2)


Attribution
-----------

Code originally based on typescript/node implementation by
`Matthieu Lemoine <https://github.com/MatthieuLemoine/push-receiver>`_.
See `this blog post <https://medium.com/@MatthieuLemoine/my-journey-to-bring-web-push-support-to-node-and-electron-ce70eea1c0b0>`_ for more details.

Converted to python by
`lolisamurai <https://github.com/Francesco149/push_receiver>`_

http decryption logic in decrypt.py by
`Martin Thomson <https://github.com/web-push-libs/encrypted-content-encoding>`_
