This is a client library for Firebase in C# 8.0 in .NET Core 3.1.
Initialize firebase with the Firebase.InitializeFirebase(string projectId, string apiKey) method with your project id and WebApi key as parameters.
After this you can get the firebase instance with the Firebase.GetInstance() method.
Any usage of firebase from this library should be from the Firebase instance you get from InitializeFirebase or GetInstance methods.
If you need to register a user you can use the FirebaseAuth.SignUpAsync(string email, string password) method with the desired users email and password.
If you already registered and want to authenticate a user, you can use the FirebaseAuth.SignInWithPasswordEmailAsync(string email, string password) method with the users email and password as parameters.
Or if you have already authenticated a user and you want to reauthenticate with a refresh token you can use the FirebaseAuth.SignInWithTokenAsync(string token) method with the refresh token you got from signing in.
You can get the current signed user information with the FirebaseAuth.GetCurrentUser() method.
You can sign out with the FirebaseAuth.Signout() method.
First you need to get a FirebaseDatabase instance, and then call the GetReference(string child) method to get a reference to a place in the database.
To read data use the DatabaseReference.ReadAync() method to get a json representation of the data in the database in the reference location, or you can use the DatabaseReference.ReadAync<T>() to cast the data to a desired type (may throw an exception if can't cast).
To write data use the DatabaseReference.WriteAsync(object data) method to write data in the database in the reference location or use the DatabaseReference.WriteAsync(string data) if you have the json representation of the data you need to write.
To delete data use the DatabaseReference.DeleteAync() method.
You can get to the root reference of your database with the DatabaseReference.Root, and get to a child reference with the DatabaseReference.Child(string child) method and to the parent with the DatabaseReference.GetParent() method.
Get a reference to a collection with the GetCollectionReference(string path) method and a reference to a document with the GetDocumentReference(string path) method of a firestore instance you have retrieved from a Firebase instance.
You can create a document in the collection with the CollectionReference.CreateDocumentAsync(string documentName, Document document) method to create a document with the document name and document as parameters. If you don't want to name the document you can use the CollectionReference.CreateDocumentAsync(Document document) method and Firestore will assign a random name to the document.
You can list the documents in the collection with the CollectionReference.ListDocumentsAsync(string collectionId = null, int? pageSize = null, string pageToken = null, string orderBy = null) method.
You can get the parent document of the collection with the CollectionReference.GetParent() method and get a document reference with the CollectionReference.GetDocumentReference(string path) method.
You can get the id of the collection with the CollectionReference.GetId() method.
You can get the document with the DocumentReference.GetAsync() method.
You can set (override) the document with the DocumentReference.SetAsync(Document document) method. Or you can update the document with the DocumentReference.UpdateAsync(Document document, Precondition currentDocument = null) method.
You can list the documents in the collection with the DocumentReference.ListCollectionsAsync(int? pageSize = null, string pageToken = null) method.
You can get a reference to a sub-collection with the DocumentReference.GetAsync() method, you can also get the name of the document with the DocumentReference.GetName()method. And you can get the parent collection with the DocumentReference.GetParent() method.