refactored broad range of the application, split files, modularized calendar and file views, centralized bottom sheets and clipboard handling, and implemented unit test coverage

lib/view/pages/files/widgets/file_details_sheet.dart

@@ -1,48 +1,33 @@
 import 'package:filesize/filesize.dart';
 import 'package:flutter/material.dart';
-import 'package:flutter/services.dart';
-import 'package:jiffy/jiffy.dart';
 
 import '../../../../api/marianumcloud/webdav/queries/list_files/cacheable_file.dart';
+import '../../../../extensions/date_time.dart';
+import '../../../../utils/clipboard_helper.dart';
+import '../../../../widget/details_bottom_sheet.dart';
 
 /// Shows a modal bottom sheet with technical metadata about a single file or
 /// folder: full path, MIME type, size, timestamps, ETag.
-Future<void> showFileDetailsSheet(BuildContext context, CacheableFile file) {
-  return showModalBottomSheet<void>(
-    context: context,
-    isScrollControlled: true,
-    showDragHandle: true,
-    builder: (context) => SafeArea(
-      child: SingleChildScrollView(
-        padding: const EdgeInsets.fromLTRB(16, 0, 16, 16),
-        child: Column(
-          crossAxisAlignment: CrossAxisAlignment.stretch,
-          mainAxisSize: MainAxisSize.min,
-          children: [
-            ListTile(
-              leading: Icon(file.isDirectory ? Icons.folder : Icons.description_outlined, size: 32),
-              title: Text(file.name, style: const TextStyle(fontWeight: FontWeight.bold)),
-              subtitle: Text(file.isDirectory ? 'Ordner' : (file.mimeType ?? '–')),
-            ),
-            const Divider(),
-            _DetailRow(label: 'Pfad', value: file.path, copyable: true),
-            if (!file.isDirectory) _DetailRow(label: 'Größe', value: filesize(file.size)),
-            if (file.modifiedAt != null)
-              _DetailRow(
-                label: 'Geändert',
-                value: '${Jiffy.parseFromDateTime(file.modifiedAt!).format(pattern: 'dd.MM.yyyy HH:mm')} '
-                    '(${Jiffy.parseFromDateTime(file.modifiedAt!).fromNow()})',
-              ),
-            if (file.createdAt != null)
-              _DetailRow(
-                label: 'Erstellt',
-                value: Jiffy.parseFromDateTime(file.createdAt!).format(pattern: 'dd.MM.yyyy HH:mm'),
-              ),
-            if (file.eTag != null) _DetailRow(label: 'ETag', value: file.eTag!, copyable: true),
-          ],
-        ),
-      ),
+void showFileDetailsSheet(BuildContext context, CacheableFile file) {
+  showDetailsBottomSheet(
+    context,
+    header: ListTile(
+      leading: Icon(file.isDirectory ? Icons.folder : Icons.description_outlined, size: 32),
+      title: Text(file.name, style: const TextStyle(fontWeight: FontWeight.bold)),
+      subtitle: Text(file.isDirectory ? 'Ordner' : (file.mimeType ?? '–')),
     ),
+    children: (_) => [
+      _DetailRow(label: 'Pfad', value: file.path, copyable: true),
+      if (!file.isDirectory) _DetailRow(label: 'Größe', value: filesize(file.size)),
+      if (file.modifiedAt != null)
+        _DetailRow(
+          label: 'Geändert',
+          value: '${file.modifiedAt!.formatDateTime()} (${file.modifiedAt!.formatRelative()})',
+        ),
+      if (file.createdAt != null)
+        _DetailRow(label: 'Erstellt', value: file.createdAt!.formatDateTime()),
+      if (file.eTag != null) _DetailRow(label: 'ETag', value: file.eTag!, copyable: true),
+    ],
   );
 }
 
@@ -54,7 +39,7 @@ class _DetailRow extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) => Padding(
-        padding: const EdgeInsets.symmetric(vertical: 6),
+        padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 6),
         child: Row(
           crossAxisAlignment: CrossAxisAlignment.start,
           children: [
@@ -67,12 +52,7 @@ class _DetailRow extends StatelessWidget {
               IconButton(
                 tooltip: 'Kopieren',
                 icon: const Icon(Icons.copy, size: 18),
-                onPressed: () {
-                  Clipboard.setData(ClipboardData(text: value));
-                  ScaffoldMessenger.of(context).showSnackBar(
-                    const SnackBar(content: Text('In Zwischenablage kopiert')),
-                  );
-                },
+                onPressed: () => copyToClipboard(context, value),
               ),
           ],
         ),