FirestoreChatBackend class

A ChatBackend backed by Cloud Firestore for message storage and Firebase Storage for image uploads.

Messages for a conversation at path are stored in the <path>/Activity subcollection, ordered by a timestamp server timestamp field.

Inheritance

• Object
• ChatBackend
• FirestoreChatBackend

Constructors

FirestoreChatBackend({FirebaseFirestore? firestore, FirebaseStorage? storage})

Creates a FirestoreChatBackend using the default FirebaseFirestore and FirebaseStorage instances, or the ones supplied.

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

dispose(String path) → void

Releases any resources (subscriptions, clients) held for path.

override

fetchMessages(String path) → Future<List<ChatBackendMessage>>

Fetches all existing messages for the conversation at path, ordered oldest first.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

sendMessage(String path, ChatMessage message) → Future<void>

Persists message for the conversation at path.

override

subscribeToNewMessages(String path) → Stream<ChatBackendMessage>

Subscribes to newly created messages for the conversation at path.

override

toString() → String

A string representation of this object.

inherited

uploadImage(String filePath, String fileName) → Future<String>

Uploads filePath as a chat image attachment and returns its public URL.

override

Operators

operator ==(Object other) → bool

The equality operator.

inherited