Merge pull request #53 from Iconica-Development/doc/improve-documentation

doc: create documentation for files

README.md

@@ -239,7 +239,7 @@ Please file any issues, bugs or feature request as an issue on our [GitHub](http
 
 ## Want to contribute
 
-If you would like to contribute to the plugin (e.g. by improving the documentation, solving a bug or adding a cool new feature), please carefully review our [contribution guide](../CONTRIBUTING.md) and send us your [pull request](https://github.com/Iconica-Development/flutter_chat/pulls).
+If you would like to contribute to the plugin (e.g. by improving the documentation, solving a bug or adding a cool new feature), please carefully review our [contribution guide](./CONTRIBUTING.md) and send us your [pull request](https://github.com/Iconica-Development/flutter_chat/pulls).
 
 ## Author
 

packages/flutter_chat/lib/src/chat_entry_widget.dart

@@ -3,7 +3,9 @@ import 'dart:async';
 import 'package:flutter/material.dart';
 import 'package:flutter_chat/flutter_chat.dart';
 
+/// A widget representing an entry point for a chat UI.
 class ChatEntryWidget extends StatefulWidget {
+  /// Constructs a [ChatEntryWidget].
   const ChatEntryWidget({
     this.chatService,
     this.onTap,
@@ -16,19 +18,35 @@ class ChatEntryWidget extends StatefulWidget {
     super.key,
   });
 
+  /// The chat service associated with the widget.
   final ChatService? chatService;
+
+  /// Background color of the widget.
   final Color backgroundColor;
+
+  /// Size of the widget.
   final double widgetSize;
+
+  /// Background color of the counter.
   final Color counterBackgroundColor;
+
+  /// Callback function triggered when the widget is tapped.
   final Function()? onTap;
+
+  /// Icon to be displayed.
   final IconData icon;
+
+  /// Color of the icon.
   final Color iconColor;
+
+  /// Text style for the counter.
   final TextStyle? textStyle;
 
   @override
   State<ChatEntryWidget> createState() => _ChatEntryWidgetState();
 }
 
+/// State class for [ChatEntryWidget].
 class _ChatEntryWidgetState extends State<ChatEntryWidget> {
   ChatService? chatService;
 
@@ -98,13 +116,17 @@ class _ChatEntryWidgetState extends State<ChatEntryWidget> {
       );
 }
 
+/// Stateful widget representing an animated notification icon.
 class _AnimatedNotificationIcon extends StatefulWidget {
   const _AnimatedNotificationIcon({
     required this.notifications,
     required this.icon,
   });
 
+  /// The number of notifications.
   final int notifications;
+
+  /// The icon to be displayed.
   final Icon icon;
 
   @override
@@ -112,6 +134,7 @@ class _AnimatedNotificationIcon extends StatefulWidget {
       _AnimatedNotificationIconState();
 }
 
+/// State class for [_AnimatedNotificationIcon].
 class _AnimatedNotificationIconState extends State<_AnimatedNotificationIcon>
     with SingleTickerProviderStateMixin {
   late AnimationController _animationController;

packages/flutter_chat/lib/src/flutter_chat_navigator_userstory.dart

@@ -5,6 +5,10 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_chat/flutter_chat.dart';
 
+/// Navigates to the chat user story screen.
+///
+/// [context]: The build context.
+/// [configuration]: The configuration for the chat user story.
 Widget chatNavigatorUserStory(
   BuildContext context, {
   ChatUserStoryConfiguration? configuration,
@@ -18,6 +22,10 @@ Widget chatNavigatorUserStory(
       context,
     );
 
+/// Constructs the chat screen route widget.
+///
+/// [configuration]: The configuration for the chat user story.
+/// [context]: The build context.
 Widget _chatScreenRoute(
   ChatUserStoryConfiguration configuration,
   BuildContext context,
@@ -65,6 +73,11 @@ Widget _chatScreenRoute(
       translations: configuration.translations,
     );
 
+/// Constructs the chat detail screen route widget.
+///
+/// [configuration]: The configuration for the chat user story.
+/// [context]: The build context.
+/// [chatId]: The id of the chat.
 Widget _chatDetailScreenRoute(
   ChatUserStoryConfiguration configuration,
   BuildContext context,
@@ -118,6 +131,12 @@ Widget _chatDetailScreenRoute(
       iconColor: configuration.iconColor,
     );
 
+/// Constructs the chat profile screen route widget.
+///
+/// [configuration]: The configuration for the chat user story.
+/// [context]: The build context.
+/// [chatId]: The id of the chat.
+/// [userId]: The id of the user.
 Widget _chatProfileScreenRoute(
   ChatUserStoryConfiguration configuration,
   BuildContext context,
@@ -147,6 +166,10 @@ Widget _chatProfileScreenRoute(
       },
     );
 
+/// Constructs the new chat screen route widget.
+///
+/// [configuration]: The configuration for the chat user story.
+/// [context]: The build context.
 Widget _newChatScreenRoute(
   ChatUserStoryConfiguration configuration,
   BuildContext context,

packages/flutter_chat/lib/src/go_router.dart

@@ -5,6 +5,11 @@
 import 'package:flutter/material.dart';
 import 'package:go_router/go_router.dart';
 
+/// Builds a screen with a fade transition.
+///
+/// [context]: The build context.
+/// [state]: The state of the GoRouter.
+/// [child]: The child widget to be displayed.
 CustomTransitionPage buildScreenWithFadeTransition<T>({
   required BuildContext context,
   required GoRouterState state,
@@ -17,6 +22,11 @@ CustomTransitionPage buildScreenWithFadeTransition<T>({
           FadeTransition(opacity: animation, child: child),
     );
 
+/// Builds a screen without any transition.
+///
+/// [context]: The build context.
+/// [state]: The state of the GoRouter.
+/// [child]: The child widget to be displayed.
 CustomTransitionPage buildScreenWithoutTransition<T>({
   required BuildContext context,
   required GoRouterState state,

packages/flutter_chat/lib/src/models/chat_configuration.dart

@@ -7,8 +7,10 @@ import 'dart:typed_data';
 import 'package:flutter/material.dart';
 import 'package:flutter_chat_view/flutter_chat_view.dart';
 
+/// `ChatUserStoryConfiguration` is a class that configures the chat user story.
 @immutable
 class ChatUserStoryConfiguration {
+  /// Creates a new instance of `ChatUserStoryConfiguration`.
   const ChatUserStoryConfiguration({
     required this.chatService,
     required this.chatOptionsBuilder,
@@ -30,30 +32,63 @@ class ChatUserStoryConfiguration {
     this.messagePageSize = 20,
     this.onPressUserProfile,
   });
+
+  /// The service responsible for handling chat-related functionalities.
   final ChatService chatService;
+
+  /// Callback function triggered when a chat is pressed.
   final Function(BuildContext, ChatModel)? onPressChat;
+
+  /// Callback function triggered when a chat is deleted.
   final Function(BuildContext, ChatModel)? onDeleteChat;
+
+  /// Translations for internationalization/localization support.
   final ChatTranslations translations;
+
+  /// Determines whether dismissing is disabled for permanent chats.
   final bool disableDismissForPermanentChats;
+
+  /// Callback function for uploading an image.
   final Future<void> Function(Uint8List image)? onUploadImage;
+
+  /// Callback function for submitting a message.
   final Future<void> Function(String text)? onMessageSubmit;
 
   /// Called after a new message is sent. This can be used to do something
   /// extra like sending a push notification.
   final Function(String chatId)? afterMessageSent;
+
+  /// Callback function triggered when a chat is read.
   final Future<void> Function(ChatModel chat)? onReadChat;
+
+  /// Callback function triggered when creating a chat.
   final Function(ChatUserModel)? onPressCreateChat;
+
+  /// Builder for chat options based on context.
   final ChatOptions Function(BuildContext context) chatOptionsBuilder;
 
   /// If true, the user will be routed to the new chat screen if there are
   /// no chats.
   final bool routeToNewChatIfEmpty;
+
+  /// The size of each page of messages.
   final int messagePageSize;
 
+  /// Dialog for confirming chat deletion.
   final Future<bool?> Function(BuildContext, ChatModel)? deleteChatDialog;
+
+  /// Callback function triggered when chat title is pressed.
   final Function(BuildContext context, ChatModel chat)? onPressChatTitle;
+
+  /// Color of icons.
   final Color? iconColor;
+
+  /// Builder for the chat page.
   final Widget Function(BuildContext context, Widget child)? chatPageBuilder;
+
+  /// Callback function triggered when starting a chat.
   final Function()? onPressStartChat;
+
+  /// Callback function triggered when user profile is pressed.
   final Function()? onPressUserProfile;
 }

packages/flutter_chat/lib/src/routes.dart

@@ -2,12 +2,19 @@
 //
 // SPDX-License-Identifier: BSD-3-Clause
 
+/// Provides route paths for the chat user story.
 mixin ChatUserStoryRoutes {
   static const String chatScreen = '/chat';
+
+  /// Constructs the path for the chat detail view.
   static String chatDetailViewPath(String chatId) => '/chat-detail/$chatId';
+
   static const String chatDetailScreen = '/chat-detail/:id';
   static const String newChatScreen = '/new-chat';
+
+  /// Constructs the path for the chat profile screen.
   static String chatProfileScreenPath(String chatId, String? userId) =>
       '/chat-profile/$chatId/$userId';
+
   static const String chatProfileScreen = '/chat-profile/:id/:userId';
 }

packages/flutter_chat_firebase/lib/config/firebase_chat_options.dart

@@ -4,8 +4,10 @@
 
 import 'package:flutter/material.dart';
 
+/// Options for Firebase chat configuration.
 @immutable
 class FirebaseChatOptions {
+  /// Creates a new instance of `FirebaseChatOptions`.
   const FirebaseChatOptions({
     this.groupChatsCollectionName = 'group_chats',
     this.chatsCollectionName = 'chats',
@@ -15,15 +17,26 @@ class FirebaseChatOptions {
     this.userChatsCollectionName = 'chats',
   });
 
+  /// The collection name for group chats.
   final String groupChatsCollectionName;
+
+  /// The collection name for chats.
   final String chatsCollectionName;
+
+  /// The collection name for messages.
   final String messagesCollectionName;
+
+  /// The collection name for users.
   final String usersCollectionName;
+
+  /// The collection name for chat metadata.
   final String chatsMetaDataCollectionName;
 
-  ///This is the collection inside the user document.
+  /// The collection name for user chats.
   final String userChatsCollectionName;
 
+  /// Creates a copy of this FirebaseChatOptions but with the given fields
+  /// replaced with the new values.
   FirebaseChatOptions copyWith({
     String? groupChatsCollectionName,
     String? chatsCollectionName,

packages/flutter_chat_firebase/lib/dto/firebase_chat_document.dart

@@ -6,8 +6,10 @@ import 'package:cloud_firestore/cloud_firestore.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_chat_firebase/dto/firebase_message_document.dart';
 
+/// Represents a chat document in Firebase.
 @immutable
 class FirebaseChatDocument {
+  /// Creates a new instance of `FirebaseChatDocument`.
   const FirebaseChatDocument({
     required this.personal,
     required this.canBeDeleted,
@@ -19,6 +21,7 @@ class FirebaseChatDocument {
     this.lastMessage,
   });
 
+  /// Constructs a FirebaseChatDocument from JSON.
   FirebaseChatDocument.fromJson(Map<String, dynamic> json, this.id)
       : title = json['title'],
         imageUrl = json['image_url'],
@@ -33,15 +36,31 @@ class FirebaseChatDocument {
                 null,
               );
 
+  /// The unique identifier of the chat document.
   final String? id;
+
+  /// The title of the chat.
   final String? title;
+
+  /// The image URL of the chat.
   final String? imageUrl;
+
+  /// Indicates if the chat is personal.
   final bool personal;
+
+  /// Indicates if the chat can be deleted.
   final bool canBeDeleted;
+
+  /// The timestamp of when the chat was last used.
   final Timestamp? lastUsed;
+
+  /// The list of users participating in the chat.
   final List<String> users;
+
+  /// The last message in the chat.
   final FirebaseMessageDocument? lastMessage;
 
+  /// Converts the FirebaseChatDocument to JSON format.
   Map<String, dynamic> toJson() => {
         'title': title,
         'image_url': imageUrl,

packages/flutter_chat_firebase/lib/dto/firebase_message_document.dart

@@ -5,8 +5,10 @@
 import 'package:cloud_firestore/cloud_firestore.dart';
 import 'package:flutter/material.dart';
 
+/// Represents a message document in Firebase.
 @immutable
 class FirebaseMessageDocument {
+  /// Creates a new instance of `FirebaseMessageDocument`.
   const FirebaseMessageDocument({
     required this.sender,
     required this.timestamp,
@@ -15,18 +17,29 @@ class FirebaseMessageDocument {
     this.imageUrl,
   });
 
+  /// Constructs a FirebaseMessageDocument from JSON.
   FirebaseMessageDocument.fromJson(Map<String, dynamic> json, this.id)
       : sender = json['sender'],
         text = json['text'],
         imageUrl = json['image_url'],
         timestamp = json['timestamp'];
 
+  /// The unique identifier of the message document.
   final String? id;
+
+  /// The sender of the message.
   final String sender;
+
+  /// The text content of the message.
   final String? text;
+
+  /// The image URL of the message.
   final String? imageUrl;
+
+  /// The timestamp of when the message was sent.
   final Timestamp timestamp;
 
+  /// Converts the FirebaseMessageDocument to JSON format.
   Map<String, dynamic> toJson() => {
         'sender': sender,
         'text': text,

packages/flutter_chat_firebase/lib/dto/firebase_user_document.dart

@@ -4,8 +4,10 @@
 
 import 'package:flutter/material.dart';
 
+/// Represents a user document in Firebase.
 @immutable
 class FirebaseUserDocument {
+  /// Creates a new instance of `FirebaseUserDocument`.
   const FirebaseUserDocument({
     this.firstName,
     this.lastName,
@@ -13,6 +15,7 @@ class FirebaseUserDocument {
     this.id,
   });
 
+  /// Constructs a FirebaseUserDocument from JSON.
   FirebaseUserDocument.fromJson(
     Map<String, Object?> json,
     String id,
@@ -26,11 +29,19 @@ class FirebaseUserDocument {
               json['image_url'] == null ? null : json['image_url']! as String,
         );
 
+  /// The first name of the user.
   final String? firstName;
+
+  /// The last name of the user.
   final String? lastName;
+
+  /// The image URL of the user.
   final String? imageUrl;
+
+  /// The unique identifier of the user document.
   final String? id;
 
+  /// Converts the FirebaseUserDocument to JSON format.
   Map<String, Object?> toJson() => {
         'first_name': firstName,
         'last_name': lastName,

packages/flutter_chat_firebase/lib/service/firebase_chat_detail_service.dart

@@ -13,9 +13,16 @@ import 'package:flutter_chat_firebase/dto/firebase_message_document.dart';
 import 'package:flutter_chat_interface/flutter_chat_interface.dart';
 import 'package:uuid/uuid.dart';
 
+/// Service class for managing chat details using Firebase.
 class FirebaseChatDetailService
     with ChangeNotifier
     implements ChatDetailService {
+  /// Constructor for FirebaseChatDetailService.
+  ///
+  /// [userService]: Instance of ChatUserService.
+  /// [app]: Optional FirebaseApp instance, defaults to Firebase.app().
+  /// [options]: Optional FirebaseChatOptions instance,
+  /// defaults to FirebaseChatOptions().
   FirebaseChatDetailService({
     required ChatUserService userService,
     FirebaseApp? app,
@@ -123,6 +130,10 @@ class FirebaseChatDetailService
     }
   }
 
+  /// Sends a text message to a chat.
+  ///
+  /// [text]: The text message to send.
+  /// [chatId]: The ID of the chat where the message will be sent.
   @override
   Future<void> sendTextMessage({
     required String text,
@@ -135,6 +146,10 @@ class FirebaseChatDetailService
         },
       );
 
+  /// Sends an image message to a chat.
+  ///
+  /// [chatId]: The ID of the chat where the message will be sent.
+  /// [image]: The image data to send.
   @override
   Future<void> sendImageMessage({
     required String chatId,
@@ -157,6 +172,9 @@ class FirebaseChatDetailService
         );
   }
 
+  /// Retrieves a stream of messages for a chat.
+  ///
+  /// [chatId]: The ID of the chat.
   @override
   Stream<List<ChatMessageModel>> getMessagesStream(String chatId) {
     timestampToFilter = DateTime.now();
@@ -227,6 +245,7 @@ class FirebaseChatDetailService
     return _controller!.stream;
   }
 
+  /// Stops listening for messages.
   @override
   Future<void> stopListeningForMessages() async {
     await _subscription?.cancel();
@@ -235,6 +254,10 @@ class FirebaseChatDetailService
     _controller = null;
   }
 
+  /// Fetches more messages for a chat.
+  ///
+  /// [pageSize]: The number of messages to fetch.
+  /// [chatId]: The ID of the chat.
   @override
   Future<void> fetchMoreMessage(int pageSize, String chatId) async {
     if (lastChat == null) {
@@ -313,6 +336,7 @@ class FirebaseChatDetailService
     notifyListeners();
   }
 
+  /// Retrieves the list of messages.
   @override
   List<ChatMessageModel> getMessages() => _cumulativeMessages;
 }

packages/flutter_chat_firebase/lib/service/firebase_chat_overview_service.dart

@@ -12,12 +12,19 @@ import 'package:flutter_chat_firebase/config/firebase_chat_options.dart';
 import 'package:flutter_chat_firebase/dto/firebase_chat_document.dart';
 import 'package:flutter_chat_interface/flutter_chat_interface.dart';
 
+/// Service class for managing chat overviews using Firebase.
 class FirebaseChatOverviewService implements ChatOverviewService {
   late FirebaseFirestore _db;
   late FirebaseStorage _storage;
   late ChatUserService _userService;
   late FirebaseChatOptions _options;
 
+  /// Constructor for FirebaseChatOverviewService.
+  ///
+  /// [userService]: Instance of ChatUserService.
+  /// [app]: Optional FirebaseApp instance, defaults to Firebase.app().
+  /// [options]: Optional FirebaseChatOptions instance, defaults
+  /// to FirebaseChatOptions().
   FirebaseChatOverviewService({
     required ChatUserService userService,
     FirebaseApp? app,
@@ -45,6 +52,7 @@ class FirebaseChatOverviewService implements ChatOverviewService {
     return snapshots.data()?['amount_unread_messages'];
   }
 
+  /// Retrieves a stream of chat overviews.
   @override
   Stream<List<ChatModel>> getChatsStream() {
     StreamSubscription? chatSubscription;
@@ -199,6 +207,9 @@ class FirebaseChatOverviewService implements ChatOverviewService {
     return controller.stream;
   }
 
+  /// Retrieves a chat by the given user.
+  ///
+  /// [user]: The user associated with the chat.
   @override
   Future<ChatModel> getChatByUser(ChatUserModel user) async {
     var currentUser = await _userService.getCurrentUser();
@@ -217,6 +228,9 @@ class FirebaseChatOverviewService implements ChatOverviewService {
     );
   }
 
+  /// Retrieves a chat by the given ID.
+  ///
+  /// [chatId]: The ID of the chat.
   @override
   Future<ChatModel> getChatById(String chatId) async {
     var currentUser = await _userService.getCurrentUser();
@@ -266,6 +280,9 @@ class FirebaseChatOverviewService implements ChatOverviewService {
     }
   }
 
+  /// Deletes the given chat.
+  ///
+  /// [chat]: The chat to be deleted.
   @override
   Future<void> deleteChat(ChatModel chat) async {
     var chatCollection = await _db
@@ -308,6 +325,9 @@ class FirebaseChatOverviewService implements ChatOverviewService {
     }
   }
 
+  /// Stores the given chat if it does not exist already.
+  ///
+  /// [chat]: The chat to be stored.
   @override
   Future<ChatModel> storeChatIfNot(ChatModel chat) async {
     if (chat.id == null) {
@@ -392,6 +412,7 @@ class FirebaseChatOverviewService implements ChatOverviewService {
     return chat;
   }
 
+  /// Retrieves a stream of the count of unread chats.
   @override
   Stream<int> getUnreadChatsCountStream() {
     // open a stream to the user's chats collection and listen to changes in
@@ -428,6 +449,9 @@ class FirebaseChatOverviewService implements ChatOverviewService {
     return controller.stream;
   }
 
+  /// Marks a chat as read.
+  ///
+  /// [chat]: The chat to be marked as read.
   @override
   Future<void> readChat(ChatModel chat) async {
     // set the amount of read chats to the amount of messages in the chat
@@ -436,6 +460,7 @@ class FirebaseChatOverviewService implements ChatOverviewService {
       return;
     }
     // set the amount of unread messages to 0
+
     await _db
         .collection(_options.usersCollectionName)
         .doc(currentUser!.id)

packages/flutter_chat_firebase/lib/service/firebase_chat_service.dart

@@ -3,6 +3,7 @@ import 'package:flutter_chat_firebase/config/firebase_chat_options.dart';
 import 'package:flutter_chat_firebase/flutter_chat_firebase.dart';
 import 'package:flutter_chat_interface/flutter_chat_interface.dart';
 
+/// Service class for managing chat services using Firebase.
 class FirebaseChatService implements ChatService {
   FirebaseChatService({
     this.options,
@@ -29,10 +30,19 @@ class FirebaseChatService implements ChatService {
     );
   }
 
+  /// The options for configuring Firebase Chat.
   final FirebaseChatOptions? options;
+
+  /// The Firebase app instance.
   final FirebaseApp? app;
+
+  /// The service for managing chat details.
   ChatDetailService? firebaseChatDetailService;
+
+  /// The service for managing chat overviews.
   ChatOverviewService? firebaseChatOverviewService;
+
+  /// The service for managing chat users.
   ChatUserService? firebaseChatUserService;
 
   @override

packages/flutter_chat_firebase/lib/service/firebase_chat_user_service.dart

@@ -9,7 +9,12 @@ import 'package:flutter_chat_firebase/config/firebase_chat_options.dart';
 import 'package:flutter_chat_firebase/dto/firebase_user_document.dart';
 import 'package:flutter_chat_interface/flutter_chat_interface.dart';
 
+/// Service class for managing chat users using Firebase.
 class FirebaseChatUserService implements ChatUserService {
+  /// Constructor for FirebaseChatUserService.
+  ///
+  /// [app]: The Firebase app instance.
+  /// [options]: The options for configuring Firebase Chat.
   FirebaseChatUserService({
     FirebaseApp? app,
     FirebaseChatOptions? options,
@@ -21,13 +26,22 @@ class FirebaseChatUserService implements ChatUserService {
     _options = options ?? const FirebaseChatOptions();
   }
 
+  /// The Firebase Firestore instance.
   late FirebaseFirestore _db;
+
+  /// The Firebase Authentication instance.
   late FirebaseAuth _auth;
+
+  /// The options for configuring Firebase Chat.
   late FirebaseChatOptions _options;
 
+  /// The current user.
   ChatUserModel? _currentUser;
+
+  /// Map to cache user models.
   final Map<String, ChatUserModel> _users = {};
 
+  /// Collection reference for users.
   CollectionReference<FirebaseUserDocument> get _userCollection => _db
       .collection(_options.usersCollectionName)
       .withConverter<FirebaseUserDocument>(

packages/flutter_chat_interface/lib/src/model/chat.dart

@@ -14,7 +14,21 @@ abstract class ChatModelInterface {
   bool get canBeDeleted;
 }
 
+/// A concrete implementation of [ChatModelInterface] representing a chat.
 class ChatModel implements ChatModelInterface {
+  /// Constructs a [ChatModel] instance.
+  ///
+  /// [id]: The ID of the chat.
+  ///
+  /// [messages]: The list of messages in the chat.
+  ///
+  /// [unreadMessages]: The number of unread messages in the chat.
+  ///
+  /// [lastUsed]: The timestamp when the chat was last used.
+  ///
+  /// [lastMessage]: The last message sent in the chat.
+  ///
+  /// [canBeDeleted]: Indicates whether the chat can be deleted.
   ChatModel({
     this.id,
     this.messages = const [],
@@ -26,14 +40,19 @@ class ChatModel implements ChatModelInterface {
 
   @override
   String? id;
+
   @override
   final List<ChatMessageModel>? messages;
+
   @override
   final int? unreadMessages;
+
   @override
   final DateTime? lastUsed;
+
   @override
   final ChatMessageModel? lastMessage;
+
   @override
   final bool canBeDeleted;
 }

packages/flutter_chat_interface/lib/src/model/chat_image_message.dart

@@ -5,25 +5,44 @@
 
 import 'package:flutter_chat_interface/flutter_chat_interface.dart';
 
+/// An abstract class defining the interface for an image message in a chat.
 abstract class ChatImageMessageModelInterface extends ChatMessageModel {
+  /// Constructs a [ChatImageMessageModelInterface] instance.
+  ///
+  /// [sender]: The sender of the message.
+  ///
+  /// [timestamp]: The timestamp when the message was sent.
   ChatImageMessageModelInterface({
     required super.sender,
     required super.timestamp,
   });
 
+  /// Returns the URL of the image associated with the message.
   String get imageUrl;
 }
 
+/// A concrete implementation of [ChatImageMessageModelInterface]
+/// representing an image message in a chat.
 class ChatImageMessageModel implements ChatImageMessageModelInterface {
+  /// Constructs a [ChatImageMessageModel] instance.
+  ///
+  /// [sender]: The sender of the message.
+  ///
+  /// [timestamp]: The timestamp when the message was sent.
+  ///
+  /// [imageUrl]: The URL of the image associated with the message.
   ChatImageMessageModel({
     required this.sender,
     required this.timestamp,
     required this.imageUrl,
   });
+
   @override
   final ChatUserModel sender;
+
   @override
   final DateTime timestamp;
+
   @override
   final String imageUrl;
 }

packages/flutter_chat_interface/lib/src/model/chat_message.dart

@@ -10,7 +10,14 @@ abstract class ChatMessageModelInterface {
   DateTime get timestamp;
 }
 
+/// A concrete implementation of [ChatMessageModelInterface]
+/// representing a chat message.
 class ChatMessageModel implements ChatMessageModelInterface {
+  /// Constructs a [ChatMessageModel] instance.
+  ///
+  /// [sender]: The sender of the message.
+  ///
+  /// [timestamp]: The timestamp when the message was sent.
   ChatMessageModel({
     required this.sender,
     required this.timestamp,
@@ -18,6 +25,7 @@ class ChatMessageModel implements ChatMessageModelInterface {
 
   @override
   final ChatUserModel sender;
+
   @override
   final DateTime timestamp;
 }

packages/flutter_chat_interface/lib/src/model/chat_text_message.dart

@@ -14,16 +14,28 @@ abstract class ChatTextMessageModelInterface extends ChatMessageModel {
   String get text;
 }
 
+/// A concrete implementation of [ChatTextMessageModelInterface]
+/// representing a text message in a chat.
 class ChatTextMessageModel implements ChatTextMessageModelInterface {
+  /// Constructs a [ChatTextMessageModel] instance.
+  ///
+  /// [sender]: The sender of the message.
+  ///
+  /// [timestamp]: The timestamp when the message was sent.
+  ///
+  /// [text]: The text content of the message.
   ChatTextMessageModel({
     required this.sender,
     required this.timestamp,
     required this.text,
   });
+
   @override
   final ChatUserModel sender;
+
   @override
   final DateTime timestamp;
+
   @override
   final String text;
 }

packages/flutter_chat_interface/lib/src/model/chat_user.dart

@@ -12,7 +12,18 @@ abstract class ChatUserModelInterface {
   String? get fullName;
 }
 
+/// A concrete implementation of [ChatUserModelInterface]
+/// representing a chat user.
 class ChatUserModel implements ChatUserModelInterface {
+  /// Constructs a [ChatUserModel] instance.
+  ///
+  /// [id]: The ID of the user.
+  ///
+  /// [firstName]: The first name of the user.
+  ///
+  /// [lastName]: The last name of the user.
+  ///
+  /// [imageUrl]: The URL of the user's image.
   ChatUserModel({
     this.id,
     this.firstName,
@@ -22,12 +33,16 @@ class ChatUserModel implements ChatUserModelInterface {
 
   @override
   final String? id;
+
   @override
   final String? firstName;
+
   @override
   final String? lastName;
+
   @override
   final String? imageUrl;
+
   @override
   String? get fullName {
     var fullName = '';

packages/flutter_chat_interface/lib/src/model/group_chat.dart

@@ -33,6 +33,25 @@ abstract class GroupChatModelInterface extends ChatModel {
 }
 
 class GroupChatModel implements GroupChatModelInterface {
+  /// Constructs a [GroupChatModel] instance.
+  ///
+  /// [id]: The ID of the chat.
+  ///
+  /// [messages]: The list of messages in the chat.
+  ///
+  /// [unreadMessages]: The number of unread messages in the chat.
+  ///
+  /// [lastUsed]: The timestamp when the chat was last used.
+  ///
+  /// [lastMessage]: The last message sent in the chat.
+  ///
+  /// [title]: The title of the group chat.
+  ///
+  /// [imageUrl]: The URL of the image associated with the group chat.
+  ///
+  /// [users]: The list of users participating in the group chat.
+  ///
+  /// [canBeDeleted]: Indicates whether the chat can be deleted.
   GroupChatModel({
     required this.canBeDeleted,
     required this.title,

packages/flutter_chat_interface/lib/src/model/personal_chat.dart

@@ -29,6 +29,21 @@ abstract class PersonalChatModelInterface extends ChatModel {
 }
 
 class PersonalChatModel implements PersonalChatModelInterface {
+  /// Constructs a [PersonalChatModel] instance.
+  ///
+  /// [user]: The user involved in the personal chat.
+  ///
+  /// [id]: The ID of the chat.
+  ///
+  /// [messages]: The list of messages in the chat.
+  ///
+  /// [unreadMessages]: The number of unread messages in the chat.
+  ///
+  /// [lastUsed]: The timestamp when the chat was last used.
+  ///
+  /// [lastMessage]: The last message sent in the chat.
+  ///
+  /// [canBeDeleted]: Indicates whether the chat can be deleted.
   PersonalChatModel({
     required this.user,
     this.id,

packages/flutter_chat_interface/lib/src/service/chat_detail_service.dart

@@ -2,24 +2,31 @@ import 'dart:typed_data';
 import 'package:flutter/material.dart';
 import 'package:flutter_chat_interface/flutter_chat_interface.dart';
 
+/// An abstract class defining the interface for a chat detail service.
 abstract class ChatDetailService with ChangeNotifier {
+  /// Sends a text message to the specified chat.
   Future<void> sendTextMessage({
     required String chatId,
     required String text,
   });
 
+  /// Sends an image message to the specified chat.
   Future<void> sendImageMessage({
     required String chatId,
     required Uint8List image,
   });
 
+  /// Retrieves a stream of messages for the specified chat.
   Stream<List<ChatMessageModel>> getMessagesStream(
     String chatId,
   );
 
+  /// Fetches more messages for the specified chat with a given page size.
   Future<void> fetchMoreMessage(int pageSize, String chatId);
 
+  /// Retrieves the list of messages for the chat.
   List<ChatMessageModel> getMessages();
 
+  /// Stops listening for messages.
   void stopListeningForMessages();
 }

packages/flutter_chat_local/lib/service/local_chat_detail_service.dart

@@ -4,12 +4,24 @@ import 'package:flutter/foundation.dart';
 import 'package:flutter_chat_interface/flutter_chat_interface.dart';
 import 'package:flutter_chat_local/local_chat_service.dart';
 
+/// A class providing local chat detail service implementation.
 class LocalChatDetailService with ChangeNotifier implements ChatDetailService {
+  /// Constructs a [LocalChatDetailService] instance.
+  ///
+  /// [chatOverviewService]: The chat overview service.
   LocalChatDetailService({required this.chatOverviewService});
+
+  /// The chat overview service.
   final ChatOverviewService chatOverviewService;
+
+  /// The list of cumulative messages.
   final List<ChatMessageModel> _cumulativeMessages = [];
+
+  /// The stream controller for messages.
   final StreamController<List<ChatMessageModel>> _controller =
       StreamController<List<ChatMessageModel>>.broadcast();
+
+  /// The subscription for the stream.
   late StreamSubscription? _subscription;
 
   @override

packages/flutter_chat_local/lib/service/local_chat_overview_service.dart

@@ -3,12 +3,17 @@ import 'dart:async';
 import 'package:flutter/foundation.dart';
 import 'package:flutter_chat_interface/flutter_chat_interface.dart';
 
+/// A class providing local chat overview service implementation.
 class LocalChatOverviewService
     with ChangeNotifier
     implements ChatOverviewService {
+  /// The list of personal chat models.
   final List<PersonalChatModel> _chats = [];
+
+  /// Retrieves the list of personal chat models.
   List<PersonalChatModel> get chats => _chats;
 
+  /// The stream controller for chats.
   final StreamController<List<ChatModel>> _chatsController =
       StreamController<List<ChatModel>>.broadcast();
 

packages/flutter_chat_local/lib/service/local_chat_service.dart

@@ -3,24 +3,36 @@ import 'package:flutter_chat_local/service/local_chat_detail_service.dart';
 import 'package:flutter_chat_local/service/local_chat_overview_service.dart';
 import 'package:flutter_chat_local/service/local_chat_user_service.dart';
 
+/// Service class for managing local chat services.
 class LocalChatService implements ChatService {
+  /// Constructor for LocalChatService.
+  ///
+  /// [localChatDetailService]: Optional local ChatDetailService instance,
+  /// defaults to LocalChatDetailService.
+  /// [localChatOverviewService]: Optional local ChatOverviewService instance,
+  /// defaults to LocalChatOverviewService.
+  /// [localChatUserService]: Optional local ChatUserService instance,
+  /// defaults to LocalChatUserService.
   LocalChatService({
     this.localChatDetailService,
     this.localChatOverviewService,
     this.localChatUserService,
   }) {
-    {
-      localChatOverviewService ??= LocalChatOverviewService();
-      localChatDetailService ??= LocalChatDetailService(
-        chatOverviewService: localChatOverviewService!,
-      );
+    localChatOverviewService ??= LocalChatOverviewService();
+    localChatDetailService ??= LocalChatDetailService(
+      chatOverviewService: localChatOverviewService!,
+    );
 
-      localChatUserService ??= LocalChatUserService();
-    }
+    localChatUserService ??= LocalChatUserService();
   }
 
+  /// The local chat detail service.
   ChatDetailService? localChatDetailService;
+
+  /// The local chat overview service.
   ChatOverviewService? localChatOverviewService;
+
+  /// The local chat user service.
   ChatUserService? localChatUserService;
 
   @override

packages/flutter_chat_local/lib/service/local_chat_user_service.dart

@@ -1,6 +1,8 @@
 import 'package:flutter_chat_interface/flutter_chat_interface.dart';
 
+/// Service class for managing local chat users.
 class LocalChatUserService implements ChatUserService {
+  /// List of predefined chat users.
   List<ChatUserModel> users = [
     ChatUserModel(
       id: '1',
@@ -15,6 +17,7 @@ class LocalChatUserService implements ChatUserService {
       imageUrl: 'https://picsum.photos/200/300',
     ),
   ];
+
   @override
   Future<List<ChatUserModel>> getAllUsers() => Future.value(users);
 

packages/flutter_chat_view/lib/src/components/chat_bottom.dart

@@ -16,11 +16,22 @@ class ChatBottom extends StatefulWidget {
     super.key,
   });
 
+  /// Callback function invoked when a message is submitted.
   final Future<void> Function(String text) onMessageSubmit;
+
+  /// The builder function for the message input.
   final TextInputBuilder messageInputBuilder;
+
+  /// Callback function invoked when the select image button is pressed.
   final VoidCallback? onPressSelectImage;
+
+  /// The chat model.
   final ChatModel chat;
+
+  /// The translations for the chat.
   final ChatTranslations translations;
+
+  /// The color of the icons.
   final Color? iconColor;
 
   @override

packages/flutter_chat_view/lib/src/components/chat_detail_row.dart

@@ -18,12 +18,21 @@ class ChatDetailRow extends StatefulWidget {
     super.key,
   });
 
+  /// The translations for the chat.
   final ChatTranslations translations;
+
+  /// The chat message model.
   final ChatMessageModel message;
+
+  /// The builder function for user avatar.
   final UserAvatarBuilder userAvatarBuilder;
-  final bool showTime;
+
+  /// The previous chat message model.
   final ChatMessageModel? previousMessage;
 
+  /// Flag indicating whether to show the time.
+  final bool showTime;
+
   @override
   State<ChatDetailRow> createState() => _ChatDetailRowState();
 }

packages/flutter_chat_view/lib/src/components/chat_image.dart

@@ -5,14 +5,23 @@
 import 'package:cached_network_image/cached_network_image.dart';
 import 'package:flutter/material.dart';
 
+/// A stateless widget representing an image in the chat.
 class ChatImage extends StatelessWidget {
+  /// Constructs a [ChatImage] widget.
+  ///
+  /// [image]: The URL of the image.
+  ///
+  /// [size]: The size of the image widget.
   const ChatImage({
     required this.image,
     this.size = 40,
     super.key,
   });
 
+  /// The URL of the image.
   final String image;
+
+  /// The size of the image widget.
   final double size;
 
   @override
@@ -24,7 +33,7 @@ class ChatImage extends StatelessWidget {
         ),
         width: size,
         height: size,
-        child: image != ''
+        child: image.isNotEmpty
             ? CachedNetworkImage(
                 imageUrl: image,
                 fit: BoxFit.cover,

packages/flutter_chat_view/lib/src/components/chat_row.dart

@@ -13,12 +13,22 @@ class ChatRow extends StatelessWidget {
     this.avatar,
     super.key,
   });
+
+  /// The title of the chat.
   final String title;
+
+  /// The number of unread messages in the chat.
   final int unreadMessages;
-  final Widget? avatar;
-  final String? subTitle;
+
+  /// The last time the chat was used.
   final String? lastUsed;
 
+  /// The subtitle of the chat.
+  final String? subTitle;
+
+  /// The avatar associated with the chat.
+  final Widget? avatar;
+
   @override
   Widget build(BuildContext context) => Row(
         crossAxisAlignment: CrossAxisAlignment.center,

packages/flutter_chat_view/lib/src/config/chat_options.dart

@@ -19,13 +19,28 @@ class ChatOptions {
     this.noChatsPlaceholderBuilder = _createNoChatsPlaceholder,
   });
 
+  /// Builder function for the new chat button.
   final ButtonBuilder newChatButtonBuilder;
+
+  /// Builder function for the message input field.
   final TextInputBuilder messageInputBuilder;
+
+  /// Builder function for the container wrapping each chat row.
   final ContainerBuilder chatRowContainerBuilder;
+
+  /// Builder function for the container wrapping the image picker.
   final ImagePickerContainerBuilder imagePickerContainerBuilder;
+
+  /// Builder function for the scaffold containing the chat view.
   final ScaffoldBuilder scaffoldBuilder;
+
+  /// Builder function for the user avatar.
   final UserAvatarBuilder userAvatarBuilder;
+
+  /// Builder function for the group avatar.
   final GroupAvatarBuilder groupAvatarBuilder;
+
+  /// Builder function for the placeholder shown when no chats are available.
   final NoChatsPlaceholderBuilder noChatsPlaceholderBuilder;
 }
 

packages/flutter_chat_view/lib/src/screens/chat_profile_screen.dart

@@ -13,10 +13,19 @@ class ChatProfileScreen extends StatefulWidget {
     super.key,
   });
 
+  /// Translations for the chat.
   final ChatTranslations translations;
+
+  /// Chat service instance.
   final ChatService chatService;
+
+  /// ID of the chat.
   final String chatId;
+
+  /// ID of the user (optional).
   final String? userId;
+
+  /// Callback function for tapping on a user.
   final Function(String userId) onTapUser;
 
   @override

packages/flutter_chat_view/lib/src/screens/chat_screen.dart

@@ -24,19 +24,33 @@ class ChatScreen extends StatefulWidget {
     super.key,
   });
 
+  /// Chat options.
   final ChatOptions options;
-  final ChatTranslations translations;
+
+  /// Chat service instance.
   final ChatService service;
+
+  /// Callback function for starting a chat.
   final Function()? onPressStartChat;
-  final Function()? onNoChats;
-  final void Function(ChatModel chat) onDeleteChat;
+
+  /// Callback function for pressing on a chat.
   final void Function(ChatModel chat) onPressChat;
 
-  /// Disable the swipe to dismiss feature for chats that are not deletable
+  /// Callback function for deleting a chat.
+  final void Function(ChatModel chat) onDeleteChat;
+
+  /// Callback function for handling when there are no chats.
+  final Function()? onNoChats;
+
+  /// Method to optionally change the bottom sheet dialog.
+  final Future<bool?> Function(BuildContext, ChatModel)? deleteChatDialog;
+
+  /// Translations for the chat.
+  final ChatTranslations translations;
+
+  /// Disables the swipe to dismiss feature for chats that are not deletable.
   final bool disableDismissForPermanentChats;
 
-  /// Method to optionally change the bottomsheetdialog
-  final Future<bool?> Function(BuildContext, ChatModel)? deleteChatDialog;
   @override
   State<ChatScreen> createState() => _ChatScreenState();
 }

packages/flutter_chat_view/lib/src/screens/new_chat_screen.dart

@@ -14,11 +14,18 @@ class NewChatScreen extends StatefulWidget {
     super.key,
   });
 
+  /// Chat options.
   final ChatOptions options;
-  final ChatTranslations translations;
+
+  /// Chat service instance.
   final ChatService service;
+
+  /// Callback function for creating a new chat with a user.
   final Function(ChatUserModel) onPressCreateChat;
 
+  /// Translations for the chat.
+  final ChatTranslations translations;
+
   @override
   State<NewChatScreen> createState() => _NewChatScreenState();
 }