sjfirebase 1.7.0

Implement Firebase Java SDK in python

sj-firebase-python

Implement Firebase Java SDK in Python

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Usage

Buildozer Android project

android.gradle_dependencies = io.github.simplejnius:sjfirebase:1.3.2
requirements = sjfirebase

The current version of python-for-android lacks support for incorporating bom dependencies, modifying the classpath, and copying the google-service.json. To address this limitation, a fork of python-for-android has been developed to include these functionalities. To implement these changes in your buildozer.spec file, make adjustments to the specified section using the provided values below:

android.api = 34
android.enable_androidx = True
android.gradle_dependencies = io.github.simplejnius:sjfirebase:1.3.2,
    com.google.firebase:firebase-auth,com.google.firebase:firebase-database,
    com.google.firebase:firebase-firestore,com.google.firebase:firebase-storage,
    com.google.firebase:firebase-analytics
p4a.fork = SimpleJnius
p4a.branch = firebase

Important Note: Upon creating an Android project within your Firebase Console, ensure to transfer the google-service.json file to the same location as your main.py file.

Python(Buildozer) installation

# pip
pip install sjfirebase

# buildozer.spec
requirements = sjfirebase

Sample Code Documentation

To add, set, update, and delete a document in a collection

from kivy.uix.screenmanager import Screen  # noqa
from sjfirebase.tools.mixin import FirestoreMixin


class MyScreen(Screen, FirestoreMixin):
    
    def on_event1(self):
        data = dict(name=self.ids.name.text, email=self.ids.email.text)
        
        # creates a new document in "individual" collection and
        # passes a success(True/False) and error(None or FirebaseException)
        # parameters to your callback
        self.add_document("individuals", data, lambda success, error: print(success, error))
    
    def on_event2(self):
        data = dict(name=self.ids.name.text, email=self.ids.email.text)
        
        # creates a new or overwrite document "custom_document_id" in collection
        # and passes a success(True/False) and error(None or FirebaseException)
        # parameters to your callback
        self.set_document("individual/custom_document_id", data, lambda success, error: print(success, error))
    
    def on_event3(self):
        data = dict(name=self.ids.name.text, email=self.ids.email.text)
        
        # creates a new or update document "custom_document_id" in collection
        # and passes a success(True/False) and error(None or FirebaseException)
        # parameters to your callback
        self.set_document("individual/custom_document_id", data, lambda success, error: print(success, error), merge=True)
    
    def on_event4(self):
        data = ["name", self.ids.name.text, "email", self.ids.email.text]
        
        # creates a new or overwrite document "custom_document_id" in collection
        # and passes a success(True/False) and error(None or FirebaseException)
        # parameters to your callback.
        # Notice the data is a list, and this list must be an even length and not odd length.
        # Every odd values are the key while the even values are the value.
        # E.g in the above `data` `name` is the key while `self.ids.name.text` is the value
        # same goes with the email. It's this way due to the varargs nature of the Firestore `update` method
        # signature
        self.update_document("individual/custom_document_id", data, lambda success, error: print(success, error))
        
    def on_event5(self):
        # deletes document "custom_document_id"
        self.delete_document("individual/custom_document_id", lambda success, error: print(success, error))

# NB: You can instantiate the FirestoreMixing directly
# E.g
f = FirestoreMixin()
f.add_document(...)
f.set_document(...)
# etc..

To get-data, paginate-data, and get-realtime-updates

from kivy.uix.screenmanager import Screen  # noqa
from sjfirebase.tools.mixin import FirestoreMixin


class MyScreen(Screen, FirestoreMixin):
    def on_event1(self):
        # gets a dictionary of data from "document_id" if any data and passes
        # `success` (True/False) and `data` (dict/errorMessage).
        # always check if success is True before accessing items from data,
        # or check if data is an instance of dict. Else log the data to see the error message
        self.get_document("individual/document_id", lambda success, data: print(success, data))
    
    def on_event2(self):
        # everything @on_event1 plus `source` that states where the data should be fetched.
        # either cache, server or default. cache gets from firebase data stored locally
        # on the device for offline purposes while server gets from firebase cloud directly.
        # default can be either cache or cloud depending on your configuration.
        self.get_document("individual/document_id", lambda success, data: print(success, data), source="cache")
    
    def on_event3(self):
        # gets all document at "individual" collection and passes success and data argument.
        # here, data is a list of dict. before accessing, refer to @on_event1
        self.get_collection_of_documents("individual", lambda success, data: print(success, data))
    
    def on_event4(self):
        # refer to @on_event2 for "source" and @on_event3 for functionality description
        self.get_collection_of_documents("individual", lambda success, data: print(success, data), source="cache")

    def on_event5(self):
        # refer to @on_event3 for functionality description. The new thing here is `limit`.
        # limit is used to limit the amount of data you fetch from firebase and paginate as you go.
        self.get_pagination_of_documents("individual", 10, lambda success, data: print(success, data))

    def on_event6(self):
        # listens for document changes and returns a dict of data and location
        # where the data is coming from. `data`(dict/errorMessage), where("Local"/"Server")
        self.add_document_snapshot_listener("individual/document_id", lambda data, where: print(data, where))
    
    def on_event7(self):
        # same as @on_event6 but gets a list of document with information on whether they were
        # added, removed or modified
        self.add_collection_snapshot_listener("individual", lambda data, where: print(data, where))

Python API

ActionCodeSettings

class sjfirebase.jclass.action.ActionCodeSettings

Structure that contains the required continue/state URL with optional Android and iOS bundle identifiers. The stateUrl used to initialize this class is the link/deep link/fallback url used while constructing the Firebase dynamic link.

methods

• newBuilder

Visit ActionCodeSettings Documentation for more API

SJFirebaseAuthEmai

class sjfirebase.jclass.emailauth.SJFirebaseAuthEmail

The entry point of the Firebase Authentication SDK. First, obtain an instance of this class by calling get_instance

methods

• check_user_signed_in
• get_instance

Visit FirebaseAuth Documentation for more API

SJFirebaseDatabase

class sjfirebase.jclass.database.SJFirebaseDatabase

The entry point for accessing a Firebase Database. You can get an instance by calling getInstance. To access a location in the database and read or write data, use get_ref

methods

• get_db
• get_ref

Visit FirebaseDatabase Documentation for more API

SJFirebaseFirestore

class sjfirebase.jclass.firestore.SJFirebaseFirestore

methods

• get_db

Visit FirebaseFirestore Documentation for more API

SJFirebaseUser

class sjfirebase.jclass.user.SJFirebaseUser

Represents a user's profile information in your Firebase project's user database. It also contains helper methods to change or retrieve profile information, as well as to manage that user's authentication state.

methods

• get_current_user
• profile_change_request_builder

Visit FirebaseUser Documentation for more API

SJFirebaseStorage

class sjfirebase.jclass.user.SJFirebaseStorage

FirebaseStorage is a service that supports uploading and downloading large objects to Google Cloud Storage. Pass a custom instance of FirebaseApp to get_instance which will initialize it with a storage location (bucket) specified via setStorageBucket.

Otherwise, if you call getReference without a FirebaseApp, the FirebaseStorage instance will initialize with the default FirebaseApp obtainable from get_instance. The storage location in this case will come the JSON configuration file downloaded from the web

methods

• get_instance

Visit FirebaseStorage Documentation for more API

OnCompleteListener

class sjfirebase.jinterface.google

OnCompleteListener

Listener called when a Task completes.

methods

• onComplete

Visit OnCompleteListener Documentation for more API

ValueEventListener

class sjfirebase.jinterface.firebase.ValueEventListener

methods

• onDataChange
• onCancelled

Visit ValueEventListener Documentation for more API