PAINTROID-440, 441, 442 Created the landing page and implemented the basic functionality

.github/workflows/main.yml

@@ -15,7 +15,7 @@ jobs:
       - name: Setup
         run: |
           flutter pub get
-          flutter pub run build_runner build
+          flutter pub run build_runner build --delete-conflicting-outputs
           dart pub global activate protoc_plugin
           chmod +x generate_protos.sh
           ./generate_protos.sh

.gitignore

@@ -32,6 +32,7 @@ migrate_working_dir/
 coverage
 *.mocks.dart
 *.pb*.dart
+*.g.dart
 
 # Web related
 lib/generated_plugin_registrant.dart

analysis_options.yaml

@@ -4,4 +4,6 @@ analyzer:
     missing_enum_constant_in_switch: error
     exhaustive_cases: error
   exclude:
-    - lib/**.pb*.dart
+    - lib/**.pb*.dart
+    - lib/data/*.g.dart
+    - test/**

lib/data/model/project.dart

@@ -0,0 +1,27 @@
+import 'package:floor/floor.dart';
+
+@entity
+class Project {
+  String name;
+  String path;
+  DateTime lastModified;
+  DateTime creationDate;
+  String? resolution;
+  String? format;
+  int? size;
+  String? imagePreviewPath;
+  @PrimaryKey(autoGenerate: true)
+  final int? id;
+
+  Project({
+    required this.name,
+    required this.path,
+    required this.lastModified,
+    required this.creationDate,
+    this.resolution,
+    this.format,
+    this.size,
+    this.imagePreviewPath,
+    this.id,
+  });
+}

lib/data/project_dao.dart

@@ -0,0 +1,21 @@
+import 'package:floor/floor.dart';
+
+import 'model/project.dart';
+
+@dao
+abstract class ProjectDAO {
+  @Insert(onConflict: OnConflictStrategy.replace)
+  Future<int> insertProject(Project project);
+
+  @Insert(onConflict: OnConflictStrategy.replace)
+  Future<List<int>> insertProjects(List<Project> projects);
+
+  @Query('DELETE FROM Project WHERE id = :id')
+  Future<void> deleteProject(int id);
+
+  @delete
+  Future<void> deleteProjects(List<Project> projects);
+
+  @Query('SELECT * FROM Project order by lastModified desc')
+  Future<List<Project>> getProjects();
+}

lib/data/project_database.dart

@@ -0,0 +1,19 @@
+import 'dart:async';
+
+import 'package:floor/floor.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:paintroid/data/model/project.dart';
+import 'package:paintroid/data/project_dao.dart';
+import 'package:paintroid/data/typeconverters/date_time_converter.dart';
+import 'package:sqflite/sqflite.dart' as sqflite;
+
+part 'project_database.g.dart';
+
+@TypeConverters([DateTimeConverter])
+@Database(version: 1, entities: [Project])
+abstract class ProjectDatabase extends FloorDatabase {
+  ProjectDAO get projectDAO;
+
+  static final provider = FutureProvider((ref) =>
+      $FloorProjectDatabase.databaseBuilder("project_database.db").build());
+}

lib/data/typeconverters/date_time_converter.dart

@@ -0,0 +1,13 @@
+import 'package:floor/floor.dart';
+
+class DateTimeConverter extends TypeConverter<DateTime, int> {
+  @override
+  DateTime decode(int databaseValue) {
+    return DateTime.fromMillisecondsSinceEpoch(databaseValue);
+  }
+
+  @override
+  int encode(DateTime value) {
+    return value.millisecondsSinceEpoch;
+  }
+}

lib/io/src/service/file_service.dart

@@ -7,12 +7,18 @@ import 'package:oxidized/oxidized.dart';
 import 'package:paintroid/core/failure.dart';
 import 'package:paintroid/core/loggable_mixin.dart';
 import 'package:paintroid/io/io.dart';
+import 'package:path_provider/path_provider.dart';
 
 abstract class IFileService {
   Future<Result<File, Failure>> save(String filename, Uint8List data);
 
+  Future<Result<File, Failure>> saveToApplicationDirectory(
+      String filename, Uint8List data);
+
   Future<Result<File, Failure>> pick();
 
+  Result<File, Failure> getFile(String path);
+
   static final provider = Provider<IFileService>((ref) => FileService());
 }
 
@@ -51,4 +57,32 @@ class FileService with LoggableMixin implements IFileService {
       return Result.err(SaveImageFailure.unidentified);
     }
   }
+
+  Future<String> get _localPath async {
+    final directory = await getApplicationDocumentsDirectory();
+    return directory.path;
+  }
+
+  @override
+  Future<Result<File, Failure>> saveToApplicationDirectory(
+      String filename, Uint8List data) async {
+    try {
+      String saveDirectory = "${await _localPath}/$filename";
+      final file = await File(saveDirectory).create(recursive: true);
+      return Result.ok(await file.writeAsBytes(data));
+    } catch (err, stacktrace) {
+      logger.severe("Could not save file", err, stacktrace);
+      return Result.err(SaveImageFailure.unidentified);
+    }
+  }
+
+  @override
+  Result<File, Failure> getFile(String path) {
+    try {
+      return Result.ok(File(path));
+    } catch (err, stacktrace) {
+      logger.severe("Could not load file", err, stacktrace);
+      return Result.err(LoadImageFailure.unidentified);
+    }
+  }
 }

lib/io/src/service/image_service.dart

@@ -1,3 +1,4 @@
+import 'dart:io';
 import 'dart:typed_data';
 import 'dart:ui' as ui;
 
@@ -19,6 +20,8 @@ abstract class IImageService {
 
   Future<Result<Uint8List, Failure>> exportAsPng(ui.Image image);
 
+  Result<Uint8List, Failure> getProjectPreview(String? path);
+
   static final provider = Provider<IImageService>((ref) => ImageService());
 }
 
@@ -61,4 +64,16 @@ class ImageService with LoggableMixin implements IImageService {
       return Result.err(SaveImageFailure.unidentified);
     }
   }
+
+  @override
+  Result<Uint8List, Failure> getProjectPreview(String? path) {
+    try {
+      if (path == null) throw "Unable to get the project preview";
+      final file = File(path);
+      return Result.ok(file.readAsBytesSync());
+    } catch (err, stacktrace) {
+      logger.severe("Could not get the project preview", err, stacktrace);
+      return Result.err(LoadImageFailure.invalidImage);
+    }
+  }
 }

lib/io/src/ui/delete_project_dialog.dart

@@ -0,0 +1,45 @@
+import 'package:flutter/material.dart';
+
+/// Returns [true] if user chose to delete the project or [null] if user
+/// dismiss the dialog by tapping outside
+Future<bool?> showDeleteDialog(BuildContext context, String name) =>
+    showGeneralDialog<bool>(
+        context: context,
+        pageBuilder: (_, __, ___) => DeleteProjectDialog(name: name),
+        barrierDismissible: true,
+        barrierLabel: "Show delete project dialog box");
+
+class DeleteProjectDialog extends StatefulWidget {
+  final String name;
+
+  const DeleteProjectDialog({Key? key, required this.name}) : super(key: key);
+
+  @override
+  State<DeleteProjectDialog> createState() => _DeleteProjectDialogState();
+}
+
+class _DeleteProjectDialogState extends State<DeleteProjectDialog> {
+  @override
+  Widget build(BuildContext context) => AlertDialog(
+        title: Text("Delete ${widget.name}"),
+        actions: [_discardButton, _deleteButton],
+        content: const Text("Do you really want to delete your project?"),
+      );
+
+  TextButton get _deleteButton {
+    return TextButton(
+      style:
+          ButtonStyle(foregroundColor: MaterialStateProperty.all(Colors.red)),
+      onPressed: () => Navigator.of(context).pop(true),
+      child: const Text("Delete"),
+    );
+  }
+
+  ElevatedButton get _discardButton => ElevatedButton(
+        onPressed: () => Navigator.of(context).pop(false),
+        child: const Text(
+          "Cancel",
+          style: TextStyle(color: Colors.white),
+        ),
+      );
+}

lib/io/src/ui/discard_changes_dialog.dart

@@ -29,7 +29,8 @@ class _DiscardChangesDialogState extends State<DiscardChangesDialog> {
 
   TextButton get _discardButton {
     return TextButton(
-      style: TextButton.styleFrom(primary: Colors.red),
+      style:
+          ButtonStyle(foregroundColor: MaterialStateProperty.all(Colors.red)),
       onPressed: () => Navigator.of(context).pop(true),
       child: const Text("Discard"),
     );

lib/io/src/ui/project_details_dialog.dart

@@ -0,0 +1,110 @@
+import 'package:filesize/filesize.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_styled_toast/flutter_styled_toast.dart';
+import 'package:intl/intl.dart';
+import 'package:oxidized/oxidized.dart';
+import 'package:paintroid/io/io.dart';
+
+import '../../../data/model/project.dart';
+import '../../../ui/color_schemes.dart';
+
+Future<bool?> showDetailsDialog(BuildContext context, Project project) =>
+    showGeneralDialog<bool>(
+        context: context,
+        pageBuilder: (_, __, ___) => ProjectDetailsDialog(project: project),
+        barrierDismissible: true,
+        barrierLabel: "Show project details dialog box");
+
+class ProjectDetailsDialog extends ConsumerStatefulWidget {
+  final Project project;
+
+  const ProjectDetailsDialog({Key? key, required this.project})
+      : super(key: key);
+
+  @override
+  ConsumerState<ProjectDetailsDialog> createState() =>
+      _ProjectDetailsDialogState();
+}
+
+class _ProjectDetailsDialogState extends ConsumerState<ProjectDetailsDialog> {
+  late IImageService imageService;
+  late IFileService fileService;
+
+  @override
+  Widget build(BuildContext context) {
+    imageService = ref.watch(IImageService.provider);
+    fileService = ref.watch(IFileService.provider);
+
+    final DateFormat formatter = DateFormat('dd-MM-yyyy HH:mm:ss');
+
+    return AlertDialog(
+      title: Text(widget.project.name),
+      actions: [_okButton],
+      content: FutureBuilder(
+        future: _getImageDimensions(widget.project.imagePreviewPath),
+        builder: (BuildContext context, AsyncSnapshot<dynamic> snapshot) {
+          if (snapshot.hasData) {
+            final dimensions = snapshot.data!;
+            return Column(
+              mainAxisAlignment: MainAxisAlignment.center,
+              crossAxisAlignment: CrossAxisAlignment.start,
+              mainAxisSize: MainAxisSize.min,
+              children: [
+                Text("Resolution: ${dimensions[0]} X ${dimensions[1]}"),
+                Text(
+                    "Last modified: ${formatter.format(widget.project.lastModified)}"),
+                Text(
+                    "Creation date: ${formatter.format(widget.project.creationDate)}"),
+                Text("Size: ${filesize(_getProjectSize())}"),
+              ],
+            );
+          } else {
+            return Column(
+              mainAxisSize: MainAxisSize.min,
+              children: [
+                CircularProgressIndicator(
+                  backgroundColor: lightColorScheme.background,
+                ),
+              ],
+            );
+          }
+        },
+      ),
+    );
+  }
+
+  ElevatedButton get _okButton => ElevatedButton(
+        onPressed: () => Navigator.of(context).pop(false),
+        child: const Text("OK", style: TextStyle(color: Colors.white)),
+      );
+
+  int _getProjectSize() => fileService.getFile(widget.project.path).when(
+        ok: (file) => file.lengthSync(),
+        err: (failure) {
+          showToast(failure.message);
+          return 0;
+        },
+      );
+
+  Future<List<int>> _getImageDimensions(String? path) async {
+    List<int> dimensions = [];
+    return imageService.getProjectPreview(path).when(
+          ok: (img) => imageService.import(img).when(
+            ok: (image) {
+              dimensions.add(image.width);
+              dimensions.add(image.height);
+              return dimensions;
+            },
+            err: (failure) {
+              showToast(failure.message);
+              return dimensions;
+            },
+          ),
+          err: (failure) {
+            showToast(failure.message);
+            return dimensions;
+          },
+        );
+  }
+}