feat: fetch crossword from firestore

lib/app/view/app.dart

@@ -1,17 +1,22 @@
+import 'package:crossword_repository/crossword_repository.dart';
 import 'package:flame/cache.dart';
 import 'package:flame_audio/flame_audio.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:io_crossword/l10n/l10n.dart';
 import 'package:io_crossword/loading/loading.dart';
+import 'package:provider/provider.dart';
 
 class App extends StatelessWidget {
-  const App({super.key});
+  const App({required this.crosswordRepository, super.key});
+
+  final CrosswordRepository crosswordRepository;
 
   @override
   Widget build(BuildContext context) {
-    return MultiBlocProvider(
+    return MultiProvider(
       providers: [
+        Provider.value(value: crosswordRepository),
         BlocProvider(
           create: (_) => PreloadCubit(
             Images(prefix: ''),

lib/bootstrap.dart

@@ -2,6 +2,7 @@ import 'dart:async';
 import 'dart:developer';
 
 import 'package:bloc/bloc.dart';
+import 'package:cloud_firestore/cloud_firestore.dart';
 import 'package:firebase_auth/firebase_auth.dart';
 import 'package:flutter/widgets.dart';
 
@@ -22,6 +23,7 @@ class AppBlocObserver extends BlocObserver {
 }
 
 typedef BootstrapBuilder = FutureOr<Widget> Function(
+  FirebaseFirestore firestore,
   FirebaseAuth firebaseAuth,
 );
 
@@ -36,6 +38,7 @@ Future<void> bootstrap(BootstrapBuilder builder) async {
 
   runApp(
     await builder(
+      FirebaseFirestore.instance,
       FirebaseAuth.instance,
     ),
   );

lib/crossword/bloc/crossword_bloc.dart

@@ -1,113 +1,47 @@
 import 'dart:async';
 
 import 'package:bloc/bloc.dart';
+import 'package:crossword_repository/crossword_repository.dart';
 import 'package:equatable/equatable.dart';
 import 'package:game_domain/game_domain.dart';
 
 part 'crossword_event.dart';
 part 'crossword_state.dart';
 
-var _id = 0;
-int _defaultIdGenerator() => _id++;
-
 class CrosswordBloc extends Bloc<CrosswordEvent, CrosswordState> {
-  CrosswordBloc({
-    int Function()? idGenerator,
-  })  : _idGenerator = idGenerator ?? _defaultIdGenerator,
-        super(const CrosswordInitial()) {
-    on<InitialBoardLoadRequested>(_onInitialBoardLoadRequested);
+  CrosswordBloc(this.crosswordRepository) : super(const CrosswordInitial()) {
     on<BoardSectionRequested>(_onBoardSectionRequested);
     on<WordSelected>(_onWordSelected);
   }
 
-  // TODO(any): Replace with real data
-  final int Function() _idGenerator;
-
-  Future<void> _onInitialBoardLoadRequested(
-    InitialBoardLoadRequested event,
-    Emitter<CrosswordState> emit,
-  ) async {
-    final section = BoardSection(
-      id: '${_idGenerator()}',
-      position: const Point(2, 2),
-      size: 40,
-      words: [
-        Word(
-          axis: Axis.horizontal,
-          position: const Point(0, 0),
-          answer: 'flutter',
-          clue: 'flutter',
-          hints: const ['dart', 'mobile', 'cross-platform'],
-          visible: true,
-          solvedTimestamp: null,
-        ),
-      ],
-      borderWords: const [],
-    );
-
-    emit(
-      CrosswordLoaded(
-        width: 40,
-        height: 40,
-        sectionSize: 400,
-        sections: {
-          (section.position.x, section.position.y): section,
-        },
-      ),
-    );
-  }
+  final CrosswordRepository crosswordRepository;
 
   Future<void> _onBoardSectionRequested(
     BoardSectionRequested event,
     Emitter<CrosswordState> emit,
   ) async {
-    final loadedState = state;
-    if (loadedState is CrosswordLoaded) {
-      final section = BoardSection(
-        id: '${_idGenerator()}',
-        position: Point(event.position.$1, event.position.$2),
-        size: 40,
-        words: [
-          Word(
-            axis: Axis.horizontal,
-            position: const Point(0, 0),
-            answer: 'flutter',
-            clue: 'flutter',
-            hints: const ['dart', 'mobile', 'cross-platform'],
-            visible: false,
-            solvedTimestamp: null,
-          ),
-          Word(
-            axis: Axis.vertical,
-            position: const Point(8, 3),
-            answer: 'dino',
-            clue: 'flutter',
-            hints: const ['dart', 'mobile', 'cross-platform'],
-            visible: true,
-            solvedTimestamp: null,
-          ),
-          Word(
-            position: const Point(4, 6),
-            axis: Axis.horizontal,
-            answer: 'sparky',
-            clue: 'flutter',
-            hints: const ['dart', 'mobile', 'cross-platform'],
-            visible: true,
-            solvedTimestamp: null,
-          ),
-        ],
-        borderWords: const [],
-      );
-
-      emit(
-        loadedState.copyWith(
-          sections: {
-            ...loadedState.sections,
-            (section.position.x, section.position.y): section,
-          },
-        ),
-      );
-    }
+    return emit.forEach(
+      crosswordRepository.watchSectionFromPosition(
+        event.position.$1,
+        event.position.$2,
+      ),
+      onData: (section) {
+        if (section == null) return state;
+        final newSection = {
+          (section.position.x, section.position.y): section,
+        };
+
+        return CrosswordLoaded(
+          sectionSize: section.size,
+          sections: state is CrosswordLoaded
+              ? {
+                  ...(state as CrosswordLoaded).sections,
+                  ...newSection,
+                }
+              : {...newSection},
+        );
+      },
+    );
   }
 
   FutureOr<void> _onWordSelected(
@@ -117,8 +51,8 @@ class CrosswordBloc extends Bloc<CrosswordEvent, CrosswordState> {
     final currentState = state;
     if (currentState is CrosswordLoaded) {
       emit(
-        currentState.withSelectedWord(
-          WordSelection(
+        currentState.copyWith(
+          selectedWord: WordSelection(
             section: event.section,
             wordId: event.wordId,
           ),

lib/crossword/bloc/crossword_event.dart

@@ -4,13 +4,6 @@ sealed class CrosswordEvent extends Equatable {
   const CrosswordEvent();
 }
 
-class InitialBoardLoadRequested extends CrosswordEvent {
-  const InitialBoardLoadRequested();
-
-  @override
-  List<Object> get props => [];
-}
-
 class BoardSectionRequested extends CrosswordEvent {
   const BoardSectionRequested(this.position);
 

lib/crossword/bloc/crossword_state.dart

@@ -6,12 +6,7 @@ sealed class CrosswordState extends Equatable {
 
 class CrosswordInitial extends CrosswordState {
   const CrosswordInitial();
-  @override
-  List<Object> get props => [];
-}
 
-class CrosswordLoading extends CrosswordState {
-  const CrosswordLoading();
   @override
   List<Object> get props => [];
 }
@@ -31,10 +26,11 @@ class WordSelection extends Equatable {
 
 class CrosswordLoaded extends CrosswordState {
   const CrosswordLoaded({
-    required this.width,
-    required this.height,
     required this.sectionSize,
     required this.sections,
+    // TODO(any): get configuration from db
+    this.width = 40,
+    this.height = 40,
     this.selectedWord,
   });
 
@@ -49,22 +45,14 @@ class CrosswordLoaded extends CrosswordState {
     int? height,
     int? sectionSize,
     Map<(int, int), BoardSection>? sections,
+    WordSelection? selectedWord,
   }) {
     return CrosswordLoaded(
       width: width ?? this.width,
       height: height ?? this.height,
       sectionSize: sectionSize ?? this.sectionSize,
       sections: sections ?? this.sections,
-    );
-  }
-
-  CrosswordState withSelectedWord(WordSelection? selectedWord) {
-    return CrosswordLoaded(
-      width: width,
-      height: height,
-      sectionSize: sectionSize,
-      sections: sections,
-      selectedWord: selectedWord,
+      selectedWord: selectedWord ?? this.selectedWord,
     );
   }
 

lib/crossword/game/components/section_component.dart

@@ -16,10 +16,16 @@ class SectionTapController extends PositionComponent
 
   @override
   void onTapUp(TapUpEvent event) {
-    final localPosition = event.localPosition;
     final boardSection = parent._boardSection;
 
     if (boardSection != null) {
+      final absolutePosition =
+          boardSection.position * CrosswordGame.cellSize * boardSection.size;
+      final localPosition = event.localPosition +
+          Vector2(
+            absolutePosition.x.toDouble(),
+            absolutePosition.y.toDouble(),
+          );
       for (final word in boardSection.words) {
         final wordLength =
             (word.answer.length * CrosswordGame.cellSize).toDouble();
@@ -210,11 +216,10 @@ class SectionComponent extends PositionComponent
 
         final y =
             word.axis == Axis.vertical ? word.position.y + c : word.position.y;
-        final offset = sectionPosition +
-            Vector2(
-              x * CrosswordGame.cellSize.toDouble(),
-              y * CrosswordGame.cellSize.toDouble(),
-            );
+        final offset = Vector2(
+          x * CrosswordGame.cellSize.toDouble(),
+          y * CrosswordGame.cellSize.toDouble(),
+        );
 
         spriteBatch.add(
           source: rect,

lib/crossword/game/crossword_game.dart

@@ -36,7 +36,7 @@ class CrosswordGame extends FlameGame with PanDetector {
     // TODO(erickzanardo): Use the assets cubit instead
     lettersSprite = await images.load('letters.png');
 
-    sectionSize = state.sectionSize;
+    sectionSize = state.sectionSize * cellSize;
 
     totalArea = Size(
       (state.width * cellSize).toDouble(),
@@ -47,8 +47,8 @@ class CrosswordGame extends FlameGame with PanDetector {
       ..priority = 1
       ..viewport = (MaxViewport()..anchor = Anchor.topLeft)
       ..viewfinder.position = Vector2(
-        totalArea.width / 2,
-        totalArea.height / 2,
+        totalArea.width,
+        totalArea.height,
       );
 
     _updateVisibleSections();

lib/crossword/view/crossword_page.dart

@@ -1,3 +1,4 @@
+import 'package:crossword_repository/crossword_repository.dart';
 import 'package:flame/game.dart' hide Route;
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
@@ -9,8 +10,9 @@ class CrosswordPage extends StatelessWidget {
   static Route<void> route() {
     return MaterialPageRoute<void>(
       builder: (_) => BlocProvider(
-        create: (BuildContext context) =>
-            CrosswordBloc()..add(const InitialBoardLoadRequested()),
+        create: (BuildContext context) => CrosswordBloc(
+          context.read<CrosswordRepository>(),
+        )..add(const BoardSectionRequested((0, 0))),
         child: const CrosswordPage(),
       ),
     );
@@ -34,10 +36,6 @@ class CrosswordView extends StatelessWidget {
       child = const Center(
         child: CircularProgressIndicator(),
       );
-    } else if (state is CrosswordLoading) {
-      child = const Center(
-        child: CircularProgressIndicator(),
-      );
     } else if (state is CrosswordError) {
       child = const Center(child: Text('Error loading crossword'));
     } else if (state is CrosswordLoaded) {

lib/main_development.dart

@@ -1,6 +1,7 @@
 import 'dart:async';
 
 import 'package:authentication_repository/authentication_repository.dart';
+import 'package:crossword_repository/crossword_repository.dart';
 import 'package:firebase_core/firebase_core.dart';
 import 'package:flutter/widgets.dart';
 import 'package:io_crossword/app/app.dart';
@@ -16,15 +17,17 @@ void main() async {
 
   unawaited(
     bootstrap(
-      (firebaseAuth) async {
+      (firestore, firebaseAuth) async {
         final authenticationRepository = AuthenticationRepository(
           firebaseAuth: firebaseAuth,
         );
 
         await authenticationRepository.signInAnonymously();
         await authenticationRepository.idToken.first;
 
-        return const App();
+        return App(
+          crosswordRepository: CrosswordRepository(db: firestore),
+        );
       },
     ),
   );