⚡️ Generate package path for directory (#619)

## What does this change?

Resolves #602

## Type of change

- [x] New feature (non-breaking change which adds functionality)

Author: AlexV525

packages/core/lib/generators/assets_generator.dart

@@ -316,19 +316,19 @@ Future<String> _dotDelimiterStyleDefinition(
   List<Integration> integrations,
 ) async {
   final rootPath = Directory(config.rootPath).absolute.uri.toFilePath();
-  final buffer = StringBuffer();
-  final className = config.flutterGen.assets.outputs.className;
+  final packageName = generatePackageNameForConfig(config);
+  final outputs = config.flutterGen.assets.outputs;
   final assetRelativePathList = _getAssetRelativePathList(
     rootPath,
     config.assets,
     config.exclude,
   );
-  final assetsStaticStatements = <_Statement>[];
-
   final assetTypeQueue = ListQueue<AssetType>.from(
     _constructAssetTree(assetRelativePathList, rootPath).children,
   );
 
+  final assetsStaticStatements = <_Statement>[];
+  final buffer = StringBuffer();
   while (assetTypeQueue.isNotEmpty) {
     final assetType = assetTypeQueue.removeFirst();
     String assetPath = join(rootPath, assetType.path);
@@ -346,13 +346,7 @@ Future<String> _dotDelimiterStyleDefinition(
       final List<_Statement?> results = await Future.wait(
         assetType.children
             .mapToUniqueAssetType(camelCase, justBasename: true)
-            .map(
-              (e) => _createAssetTypeStatement(
-                config,
-                e,
-                integrations,
-              ),
-            ),
+            .map((e) => _createAssetTypeStatement(config, e, integrations)),
       );
       final statements = results.whereType<_Statement>().toList();
 
@@ -368,14 +362,15 @@ Future<String> _dotDelimiterStyleDefinition(
         assetsStaticStatements.add(statement!);
       } else {
         final className = '\$${assetType.path.camelCase().capitalize()}Gen';
+        String? directoryPath;
+        if (outputs.directoryPathEnabled) {
+          directoryPath = assetType.posixStylePath;
+          if (packageName != null) {
+            directoryPath = 'packages/$packageName/$directoryPath';
+          }
+        }
         buffer.writeln(
-          _directoryClassGenDefinition(
-            className,
-            statements,
-            config.flutterGen.assets.outputs.directoryPathEnabled
-                ? assetType.posixStylePath
-                : null,
-          ),
+          _directoryClassGenDefinition(className, statements, directoryPath),
         );
         // Add this directory reference to Assets class
         // if we are not under the default asset folder
@@ -395,10 +390,9 @@ Future<String> _dotDelimiterStyleDefinition(
       assetTypeQueue.addAll(assetType.children);
     }
   }
-  final String? packageName = generatePackageNameForConfig(config);
   buffer.writeln(
     _dotDelimiterStyleAssetsClassDefinition(
-      className,
+      outputs.className,
       assetsStaticStatements,
       packageName,
     ),

packages/core/test/assets_gen_test.dart

@@ -102,6 +102,13 @@ void main() {
       await expectedAssetsGen(pubspec, generated, fact);
     });
 
+    test('Assets with directory path and package parameter enabled', () async {
+      const pubspec = 'test_resources/pubspec_assets_directory_path_with_package_parameter.yaml';
+      const fact = 'test_resources/actual_data/assets_directory_path_with_package_parameter.gen.dart';
+      const generated = 'test_resources/lib/gen/assets_directory_path_with_package_parameter.gen.dart';
+      await expectedAssetsGen(pubspec, generated, fact);
+    });
+
     test('Assets with excluded files and directories', () async {
       const pubspec = 'test_resources/pubspec_assets_exclude_files.yaml';
       const fact =

packages/core/test_resources/actual_data/assets_directory_path_with_package_parameter.gen.dart

@@ -0,0 +1,16 @@
+name: test
+
+flutter_gen:
+  integrations:
+    flutter_svg: true
+  assets:
+    outputs:
+      directory_path_enabled: true
+      package_parameter_enabled: true
+
+flutter:
+  assets:
+    - assets/images/chip3/chip3.jpg
+    - assets/images/icons/[email protected]
+    - assets/images/icons/fuchsia.svg
+    - assets/unknown/unknown_mime_type.bk