ChatService class
ChatService provides methods to interact with chat functionalities such as sending messages, updating last seen, and managing chat summaries.
Constructors
- ChatService.new()
-
Factory constructor to return the singleton instance
factory
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- initialLimit ↔ int
-
The initial limit for message pagination.
getter/setter pair
-
lastDocument
↔ QueryDocumentSnapshot<
Map< String, dynamic> > -
The last document fetched for pagination.
getter/setter pair
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
deleteMessage(
String chatId, String messageId) → Future< void> - Delete a message and its associated media (if any)
-
fetchMessages(
String chatId, {Message? lastMessage}) → Future< List< Message> > -
Fetches messages for a chat, optionally paginated after
lastMessage. -
getChatId(
String user1, String user2) → String - Generate a unique chat ID based on user IDs
-
getLastSeen(
String userId) → Stream< Timestamp?> - Returns a stream of the last seen timestamp for a user.
-
getUserChats(
String userId) → Stream< List< ChatSummary> > - Get a stream of chat summaries for a specific user
-
initializeFirebase(
) → Future< void> - Initializes Firebase for chat services.
-
markMessagesAsRead(
String chatId, String currentUserId) → Future< void> - Mark all unread messages as "read" when the recipient opens the chat
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
sendMessage(
Message message) → Future< void> - Sends a new message and updates chat summary.
-
setTypingStatus(
String senderId, String receiverId, bool isTyping) → Future< void> - Set the typing status for a user in a chat This updates the typing status in Firestore for the specified chat and user.
-
streamLatestMessages(
String chatId) → Stream< List< Message> > - Streams the latest messages for a chat, limited to the initial limit.
-
streamTotalUnreadMessagesForUser(
String userId) → Stream< int> - Get the total unread messages for a specific user
-
toString(
) → String -
A string representation of this object.
inherited
-
typingStatusStream(
String senderId, String receiverId) → Stream< bool> - Get the typing status of the other user in a chat Returns a stream that emits true if the other user is typing, false otherwise.
-
updateLastSeen(
String userId) → Future< void> - Updates the last seen timestamp for a user.
-
updateMessageStatus(
String chatId, String messageId, MessageStatus status) → Future< void> - Update message status (delivered, unread, read)
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Static Properties
- instance → ChatService
-
Singleton instance
final