Firebase Rest Client

Lightweight Firebase Library, made on top of REST API.

Implement Firebase to any Project without importing any Firebase SDK. This Library comes with all major features of Firebase SDK, including Realtime Database, Authentication, Storage and others are coming soon.

Discord Server

Installation

Open Package Manager in Unity and Click on Plus Icon -> Add package from git URL, paste following link https://github.com/SrejonKhan/FirebaseRestClient.git and click Add.

Other methods (Asset Store, UPM, Release Page) will be added later after a stable release.

Configuring Project

After importing to your project, Open Settings from (Edit -> Project Settings -> Firebase Rest Client). This is where we will set all api configuration.

Setup Firebase Project (Recommended)

Go to Google Cloud Platform and Create a Project
Go to Firebase Console and Create New Project. While creating project, make sure to connect GCP Project rather than creating new one.
After creating Firebase Project, enable your desired service(s) e.g Authentication / Realtime Database.
Remember, for Web API Key, you need to enable Authentication. Else, it will be empty.

This is recommended way to setup project if you're planning add authentication. If you're only planning to use Realtime Database with no authentication, try below procedures. Please keep in mind, if you connect your Firebase Project with GCP Project, there are somethings to remember. For instance, if you delete Firebase Project, it will delete your GCP project too.

Setup Firebase Project (Shortcut)

Go to Firebase Console and Create New Project. This time, no need to connect any GCP Project.
After creating Firebase Project, enable your desired service(s) e.g Authentication / Realtime Database.
Remember, for Web API Key, you need to enable Authentication. Else, it will be empty.

If you follow this procedure, and planning to add Google Sign-In SDK, you may face some problem with ClientId and Secret. It's better to follow recommended procedure to avoid any unwanted problem.

Features

This library is so far supporting Realtime Database, Authentication and Storage from Firebase. Planning to add more support in future.

Realtime Database

Read
RawRead (Json Format)
Push
Write
Update
Remove
Child Events
- OnValueChanged
- OnChildAdded
- OnChildRemoved
- OnChildChanged
Ordering
- Order by Key
- Order by Value
- Order by Child value
Filtering
- StartAt
- EndAt
- EqualTo
- LimitTo
Locally generate Push ID

Authentication (Experimental)

Email-Password Authentication
- Login and Registration
- Forget Password Email
- Email Verification Email
- Change Email/Password
Anonymous Authentication
OAuth Login
- Login with oauth token from any provider
Google OAuth Desktop Flow (Loopback)
User Profile Actions (Display Name, Photo URL)
- Change/Add Display Name
- Change/Add Photo URL
- Get full profile

Firebase Storage

Upload File

More Features are being added on regular basis.

Example

This is a general documentation. In future, there will be fully explained video and Knowledgebase. For any immediate support or discussion, join the Discord Server.

Realtime Database

Reference

new RealtimeDatabase().ReadKeyValuePairs<User>();
new RealtimeDatabase().ReadKeyValuePairs();
new RealtimeDatabase().ReadValue();

new RealtimeDatabase().RawRead();
new RealtimeDatabase().RawRead(true);
new RealtimeDatabase().Read<User>();

new RealtimeDatabase().Push(user);
new RealtimeDatabase().Push(jsonString);

new RealtimeDatabase().WriteValue(user);
new RealtimeDatabase().WriteValue(jsonString);
new RealtimeDatabase().WriteKeyValuePair("key","value");
new RealtimeDatabase().WriteKeyValuePair("key","value", true);

new RealtimeDatabase().Update(user);
new RealtimeDatabase().Update(jsonString);

new RealtimeDatabase().ChildAdded(res => { });
new RealtimeDatabase().ChildRemoved(res => { });
new RealtimeDatabase().ChildChanged(res => { });
new RealtimeDatabase().ValueChanged(res => { });

new RealtimeDatabase().OrderByKey().OnSuccess(json => { });
new RealtimeDatabase().OrderByValue().OnSuccess(json => { });
new RealtimeDatabase().OrderByChild("id").OnSuccess(json => { });

new RealtimeDatabase().LimitToFirst(10).OrderByChild("id").OnSuccess(json => { });
new RealtimeDatabase().LimitToLast(5).OrderByChild("id").OnSuccess(json => { });
new RealtimeDatabase().StartAt(25).OrderByChild("id").OnSuccess(json => { });
new RealtimeDatabase().EndAt(125).OrderByChild("id").OnSuccess(json => { });
new RealtimeDatabase().EqualTo("srejon").OrderByChild("username").OnSuccess(json => { });

string pushId = new RealtimeDatabase().GeneratePushID();

Initialize

var firebase = new RealtimeDatabase();

Read

firebase.Child("users").ReadKeyValuePairs().OnSuccess(res =>
{
    //Returns response in Dictionary<string,string> (Dictionary<string,string>)
    //item.value.id is a property of user class
    foreach (var item in res)
        Debug.Log($"Key: {item.Key} - Value: {item.Value}\n");
}).
OnError(error =>
{
    Debug.LogError(error.Message);
});

firebase.Child("users").ReadKeyValuePairs<User>().OnSuccess(res =>
{
    //Returns response in Dictionary<string,User> (Dictionary<string,T>)
    //item.value.id is a property of user class
    foreach (var item in res)
        Debug.Log($"Key: {item.Key} - Value: {item.Value.id}\n");
});

firebase.Child("notices/51").ReadValue().OnSuccess(res =>
{
    //response can be in Json or simple string value
    //JSON will be returned if child value is an json object
    //simple string value will be returned if child value represents key-pair value
    Debug.Log(res);
});

firebase.Child("user/999").Read<User>().OnSuccess(res =>
{
    //response will be converted to desired type
    //Throws JsonUtilty error if couldn't be converted to desired type
    //best case to use when value is known as an object
    Debug.Log(res);
});

firebase.Child("product").Child("orange").RawRead().OnSuccess(res =>
{
    //Returns response in Json string
    Debug.Log(res);
});

//Shallow
firebase.Child("product").Child("orange").RawRead(true).OnSuccess(res =>
{
    //Returns response in Json string
    Debug.Log(res);
});

Push

Push functionality in this library is a bit different from actual Firebase SDK. In this library, when Push() function called, it implicitly complete followings task -

Generate a Push ID locally
Write passed body to following path (childs + push id)
Returns generated Push ID as string

If you just want a Push ID, not directly writing, you can call firebase.GeneratePushID(), which returns push id in string format.

var userObject = new User("DefaultName");
firebase.Child("users").Push(userObject).OnSuccess(uid =>
{
    //Returns Push ID in string
    Debug.Log(uid);
});

string jsonString = JsonUtility.ToJson(userObject);
firebase.Child("users").Push(jsonString).OnSuccess(uid =>
{
    //Returns Push ID in string
    Debug.Log(uid);
});

Write

// Write to specific node
// Object as payload, it can be any datatypes, even raw Json
firebase.Child("product").Child("orange").WriteValue(anyObject).OnSuccess( () =>
{
    Debug.Log("Successfully written.");
});

firebase.Child("product").Child("orange").WriteValue(123);
firebase.Child("product").Child("orange").WriteValue(324.25f);
firebase.Child("product").Child("stockout").WriteValue(true);


// Key and Value Pair, suitable for key-value pair leaderboard or similar.
firebase.Child("leaderboard").WriteKeyValuePair("player123", "123");
firebase.Child("leaderboard").WriteKeyValuePair("player321", "521", true); //append to parent

Update

// Object as payload
firebase.Child("users").Child("123").Update(user).OnSuccess( () => { /*...Codes...*/ });

// Json string as payload
firebase.Child("users").Child("123").Update(jsonString);

// Primitive datatype as payload
firebase.Child("users").Child("123").Update(5654.5f);
firebase.Child("users").Child("123").Update(123);
firebase.Child("users").Child("123").Update(false);

Remove

firebase.Child("product").Child("orange").Remove().OnSuccess( () => { /*...Codes...*/ });

firebase.Child("product").Child("orange").Remove();

ChildEvents

There are 4 types of Events available in this library.

ChildAdded
ChildRemoved
ChildChanged
ValueChanged

ChildAdded

Listen for Child addition to targeted path and in-depth.

Recommended not to use in root level, as internally a snapshot creates and run query internally on each put response from server to differentiate among Update and Addition.

If it is required to listen in root level childs only, use bool shallow = true for listen to surface level child, not in-depth childs.

firebase.Child("notices").ChildAdded(res =>
{
    //Firebase send full snapshot of child node, you can ignore by checking isInitial
    if (res.isInitial)
        Debug.Log(res.path + " | " + res.data);

    //This is real snapshot of event, you will get Json from res.data
    else
        Debug.Log(res.path + "\n" + res.data);
});

//Shallow Read
firebase.Child("users").ChildAdded(res =>
{ /*...Codes...*/ }, true); //true indicates shallow read, by default is false

ChildRemoved

Listen for Child Remove at any level from targeted path.

firebase.Child("users").ChildRemoved(res =>
{
    //Firebase send full snapshot of child node, you can ignore by checking isInitial
    if (res.isInitial)
        Debug.Log(res.path + " | " + res.data);

    //This is real snapshot of event, you will get null from res.data
    else
        Debug.Log(res.path + "\n" + res.data);
});

//Shallow Read
firebase.Child("users").ChildRemoved(res =>
{ /*...Codes...*/ }, true); //true indicates shallow read, by default is false

ChildChanged

Combination of both ChildAdded and ChildRemoved.

firebase.Child("messages").ChildChanged(res =>
{
    //Firebase send full snapshot of child node, you can ignore by checking isInitial
    if (res.isInitial)
        Debug.Log(res.path + " | " + res.data);

    //This is real snapshot of event, you will get Json or null from res.data
    else
        Debug.Log(res.path + "\n" + res.data);
});

//Shallow Read
firebase.Child("users").ChildChanged(res =>
{ /*...Codes...*/ }, true); //true indicates shallow read, by default is false

Remember, as ChildChanged listen to both Add and Remove event, to make differentiate, check if(res.data == "null"). If server returns null in string format, that means a child was removed at specific path.

ValueChanged

Union of all server events.

firebase.ValueChanged(res =>
{
    //Firebase send full snapshot of child node, you can ignore by checking isInitial
    if (res.isInitial)
        Debug.Log(res.path + " | " + res.data);

    //This is real snapshot of event, you will get Json or null from res.data
    else
        Debug.Log(res.path + "\n" + res.data);
});

//Shallow Read
firebase.Child("users").ValueChanged(res =>
{ /*...Codes...*/ }, true); //true indicates shallow read, by default is false

Order

Order functions return a Json String. Remember, returned JSON isn't in order, as JSON interpreters don't enforce any ordering. Same applies to any filtered result.

If you want to order, you have to order itself in application. I'm planning to write a helper function to order json in future updates.

Remember, before using order function, make sure to Index your Database Rules. You can use OnError callback before setting up a index rules. OnError will throw error and tell exactly what is needed to add in index rules.

firebase.Child("users").OrderByKey().OnSuccess(json =>
{
    //returns json string
});

firebase.Child("leaderboard").OrderByValue().OnSuccess(json =>
{
    //returns json string
});

firebase.Child("users").OrderByChild("id").OnSuccess(json =>
{
    //returns json string
});

Order with Filters

Things to remember while filtering -

Filter functions come before Order function. E.g StartAt("5").OrderByKey()
Returned JSON isn't in order, as JSON interpreters don't enforce any ordering.
Filter functions params are in string, if you pass 5 as string, it will count it as number. If you want to filter by string, pass string inside quoutes. E.g EqualTo(""\Orange"\")

If you want to order, you have to order itself in application. I'm planning to write a helper function to order json in future updates.

//StartAt
firebase.Child("users").StartAt("5").OrderByKey().OnSuccess(json =>
{
    //returns json string
});

//EndAt
firebase.Child("users").EndAt("125").OrderByKey().OnSuccess(json =>
{
    //returns json string
});

//LimitToFirst
firebase.Child("users").LimitToFirst("25").OrderByChild("id").OnSuccess(json =>
{
    //returns json string
});


//LimitToLast
firebase.Child("users").LimitToLast("25").OrderByChild("id").OnSuccess(json =>
{
    //returns json string
});

//EqualTo
firebase.Child("users").EqualTo("\"John Doe\"").OrderByChild("name").OnSuccess(json =>
{
    //returns json string
});

Generate Push ID Locally

string pushId = firebase.GeneratePushID();

Authentication

Initialize

FirebaseAuthentication firebaseAuth = new FirebaseAuthentication();

Account Actions

firebaseAuth.CreateUserWithEmailAndPassword(email, password); //Password Signup

firebaseAuth.SignInWithEmailAndPassword(email, password); //Password Signin

firebaseAuth.SignInAnonymously(); //Anonymous SignIn

firebaseAuth.SignInWithOAuth("ACCESS_TOKEN_FROM_PROVIDER", "YOUR_PROVIDER_ID"); //OAuth SignIn

firebaseAuth.GoogleSignIn("AUTH_CODE_FROM_GOOGLE_TO_EXCHANGE_ACCESS_TOKEN"); //Google SignIn
firebaseAuth.FacebookSignIn("AUTH_CODE_FROM_FACEBOOK_TO_EXCHANGE_ACCESS_TOKEN"); //Facebook SignIn

firebaseAuth.SendPasswordResetEmail(email); //Password Reset Mail
firebaseAuth.SendEmailVerification(); //Email Verification (user must be signed in)

firebaseAuth.RefreshIdToken(refreshToken);
firebaseAuth.GetUserFromIdToken(idToken);

User Actions

FirebaseUser user = firebaseAuth.CurrentUser; //Current User automatically updates after any sign-in actions

user.ChangeEmail(newEmail); //Change Email
user.ChangePassword(newPassword); //Change Password

user.UpdateProfile("NEW_DISPLAY_NAME", "PHOTO_URL"); //Update Profile

user.Reload(); //Refresh User
user.RefreshAccessToken(); //Force to refresh token
user.Delete(); //Delete user

//User props
string displayName = user.DisplayName;
string userEmail = user.Email;
bool isEmailVerified = user.IsEmailVerified;
bool isAnonymous = user.IsAnonymous;
string photoUrl = user.PhotoUrl;
string provider = user.Provider;

firebaseAuth.SignOut(); //Sign out any signed-in user

Auth State Change Listening

firebaseAuth.StateChanged += AuthStateChanged;

// Track state changes of the auth object.
void AuthStateChanged(object sender, System.EventArgs eventArgs)
{
    if (firebaseAuth.CurrentUser != user)
    {
        bool signedIn = user != firebaseAuth.CurrentUser && firebaseAuth.CurrentUser != null;
        if (!signedIn && user != null)
        {
            Debug.Log("Signed out " + user.LocalId);
        }
        user = firebaseAuth.CurrentUser;
        if (signedIn)
        {
            Debug.Log("Signed in " + user.LocalId);
        }
    }
}

Reauthenticate with Refresh Token

We can reauthenticate user with Refresh Token. IdToken generally expires in one hour, where Refresh Token in Firebase usually long lived unless any major action taken to account (Password Change, Email change etc.).

Reauthentication should be done from the library, but as there is not any proper implementation for persistency, Library won't take liability of Reauthentication. Anyway, library provides some methods to reauthenticate from User side.

// Step 1 - Get new IdToken using Refresh Token 
string refreshToken = /*Get refresh token*/;
firebaseAuth.RefreshIdToken(refreshToken).
OnSuccess(res => 
{ 
    // Step 2 - Get User using IdToken
    firebaseAuth.GetUserFromIdToken(res.accessToken).
    OnSucess(user => 
    {
        // user authenticated
        // do your work
    }); 
});

Storage

Initialize

var firebaseStorage = new FirebaseStorage();

Upload from Direct Filepath

string filePath = @"D:\Download\audacity-win-2.4.2.exe";

firebaseStorage.Upload(filePath, "File_From_File_Path_Array", progress =>
{
    Debug.Log(progress);
}).
OnSuccess(res =>
{
    //res = UploadResponse
    Debug.Log(res.downloadUrl);
}).
OnError(err => Debug.LogError(err.Message));

Upload from Byte Array

byte[] data = File.ReadAllBytes(filePath);

firebaseStorage.Upload(data, "File_From_Byte_Array", progress =>
{
    Debug.Log(progress);
}).
OnSuccess(res =>
{
    //res = UploadResponse
    Debug.Log(res.downloadUrl);
});

Progress

Progress are between 0~1. Progress action can be passed as null argument, or simply without passing any.

firebaseStorage.Upload(filePath, "File_From_File_Path_Array", null);
firebaseStorage.Upload(filePath, "File_From_File_Path_Array");

Implementing Auth SDK

Google Sign-In SDK (Android/IOS)

Download Google SignIn SDK and Unity Jar Resolver. When importing SignIn SDK, make sure to exclude Parse & PlayServicesResolver folder. After importing SignIn Sdk, Import external-dependency-manager-latest.unitypackage from Unity Jar Resolver.
Go to Configure Project and configure your desired project.
Make sure Android is selected and exact Package Name and SHA-1 cert provided same as your project Package Name. For creating Keystore, use Unity's default Keystore Manager and for generating SHA-1 Certificate, use Keystore Explorer or command.
Go to Credential Tab in GCP and click on Web client (Auto-created for Google Sign-in) in OAuth 2.0 Client IDs Section.
Add http://127.0.0.1:5050 in Authorized Redirect URIs.
Copy Client ID and Client Secret, paste them in Firebase Configuration (Edit -> Project Settings -> Firebase Rest Client).
Enable Google SignIn Method in Firebase Authentication. And copy Client ID and Client Secret from GCP (Step 4) and Paste them in Web SDK Configuration.

Invoke this code when necessery.

GoogleSignIn.Configuration = new GoogleSignInConfiguration
{
    RequestIdToken = true,
    // Copy this ClientID from GCP OAuth Client IDs(Step 4).
    WebClientId = "723306904970-2kdkej7jcucl2b8kktpvivucov6t0r76.apps.googleusercontent.com",
    RequestAuthCode = true,
    AdditionalScopes = new List<string>() { "https://www.googleapis.com/auth/userinfo.email" } //Scope for Email
};

//Google Sign-In SDK
Task<GoogleSignInUser> signIn = GoogleSignIn.DefaultInstance.SignIn();

signIn.ContinueWith(task =>
{
    if (task.IsCanceled)
    {
        Debug.LogError("Cancelled");
    }
    else if (task.IsFaulted)
    {
        Debug.LogError(task.Exception.Message);

        using (IEnumerator<System.Exception> enumerator =
            task.Exception.InnerExceptions.GetEnumerator())
        {
            if (enumerator.MoveNext())
            {
                GoogleSignIn.SignInException error =
                        (GoogleSignIn.SignInException)enumerator.Current;
                Debug.LogError("Got Error: " + error.Status + " " + error.Message);
            }
            else
            {
                Debug.LogError("Got Unexpected Exception?!?" + task.Exception);
            }
        }
    }

    //No Error
    else
    {
        string authCode = task.Result.AuthCode; //Auth Code

        //Signing-in to Firebase Auth
        firebaseAuth.GoogleSignIn(authCode).OnSuccess(user =>
        {
            string resulText = $"\n " +
            $"Email: {user.Email}, \n " +
            $"Local ID : {user.LocalId}, \n " +
            $"Provider : {user.Provider}, \n " +
            $"Is Anon : {user.IsAnonymous}, \n " +
            $"Display Name : {user.DisplayName}";

            Debug.Log(resulText);
        }).
        OnError(error =>
        {
            Debug.Log(error.Message);
        });
    }
});

DONE!

Google Sign-In (Standalone)

Skip if you have already configured GCP Project. If you're planning to implement Google Sign-In both for Android/IOS and Standalone, follow previous segment to configure project. If you're only planning for Desktop Sign-In, follow all steps below-
- Go to Credential Tab in GCP and click on Create Credentials -> OAuth Client ID
- Select Web Application as Application Type.
- Give meaningful name
- Add http://127.0.0.1:5050 to Authorized redirect URIs.
- Click Create
Go back to Credential Tab in GCP and click on previously created Client ID in OAuth 2.0 Client IDs Section.
Copy Client ID and Client Secret, paste them in Firebase Configuration (Edit -> Project Settings -> Firebase Rest Client). You can either get ID and Secret from Firebase or GCP.
Enable Google SignIn Method in Firebase Authentication. And copy Client ID and Client Secret from GCP (Step 3) and Paste them in Web SDK Configuration.

Invoke this code when necessary.

firebaseAuth.GoogleSignInLoopback().OnSuccess(user =>
{
    string resulText = $"\n " +
    $"Email: {user.Email}, \n " +
    $"Local ID : {user.LocalId}, \n " +
    $"Provider : {user.Provider}, \n " +
    $"Is Anon : {user.IsAnonymous}, \n " +
    $"Display Name : {user.DisplayName}";

    Debug.Log(resulText);
}).
OnError(error =>
{
    Debug.Log(error.Message);
});

Done!

Documentation

There will be a well written Documentation on a Stable Release and web-based Wiki in future.

Known Limitations

This library is still under development. All limitations are being resolved one-by-one. Check CHANGELOG for more details.

Name		Name	Last commit message	Last commit date
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.github		.github
.opensource		.opensource
Documentation		Documentation
Editor		Editor
Runtime		Runtime
Tests		Tests
.gitignore		.gitignore
CHANGELOG.md		CHANGELOG.md
CHANGELOG.md.meta		CHANGELOG.md.meta
Documentation.meta		Documentation.meta
Editor.meta		Editor.meta
LICENCE.md		LICENCE.md
LICENCE.md.meta		LICENCE.md.meta
README.md		README.md
README.md.meta		README.md.meta
Runtime.meta		Runtime.meta
Tests.meta		Tests.meta
package.json		package.json
package.json.meta		package.json.meta

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SrejonKhan/FirebaseRestClient

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Firebase Rest Client

Installation

Configuring Project

Setup Firebase Project (Recommended)

Setup Firebase Project (Shortcut)

Features

Realtime Database

Authentication (Experimental)

Firebase Storage

Example

Realtime Database

Reference

Initialize

Read

Push

Write

Update

Remove

ChildEvents

ChildAdded

ChildRemoved

ChildChanged

ValueChanged

Order

Order with Filters

Generate Push ID Locally

Authentication

Initialize

Account Actions

User Actions

Auth State Change Listening

Reauthenticate with Refresh Token

Storage

Initialize

Upload from Direct Filepath

Upload from Byte Array

Progress

Implementing Auth SDK

Google Sign-In SDK (Android/IOS)

Google Sign-In (Standalone)

Documentation

Known Limitations

About

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Resources

License

Code of conduct

Security policy

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