ChatBackend class abstract

Pluggable storage/realtime backend for InappChat.

Implementations translate between the chat UI's needs (load history, stream new messages, send a message, upload an image) and a specific provider's SDK (Cloud Firestore, Appwrite, or Supabase).

Each conversation's path (see ChatEntity.path) identifies where its messages live, in whatever form the concrete backend expects (e.g. a Firestore collection path, or an Appwrite/Supabase table/collection id).

Implementers

• AppwriteChatBackend
• FirestoreChatBackend
• SupabaseChatBackend

Constructors

ChatBackend()

Const constructor for subclasses.

const

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.

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

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

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.

subscribeToNewMessages(String path) → Stream<ChatBackendMessage>

Subscribes to newly created messages for the conversation at path.

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.

Operators

operator ==(Object other) → bool

The equality operator.

inherited