Feature

ein paar feature aber datenbank macht probleme wenn man aufträge speichern möchge

services/pdf_history_service.dart

@@ -0,0 +1,76 @@
+import 'dart:convert';
+
+import 'package:shared_preferences/shared_preferences.dart';
+
+class PdfHistoryEntry {
+  PdfHistoryEntry({
+    required this.at,
+    required this.title,
+    required this.rechnungsnummer,
+  });
+
+  final DateTime at;
+  final String title;
+  final String rechnungsnummer;
+
+  Map<String, dynamic> toJson() => {
+        'at': at.toIso8601String(),
+        'title': title,
+        'rechnungsnummer': rechnungsnummer,
+      };
+
+  factory PdfHistoryEntry.fromJson(Map<String, dynamic> m) {
+    return PdfHistoryEntry(
+      at: DateTime.tryParse(m['at'] as String? ?? '') ?? DateTime.now(),
+      title: m['title'] as String? ?? '',
+      rechnungsnummer: m['rechnungsnummer'] as String? ?? '',
+    );
+  }
+}
+
+/// Lokaler Verlauf geteilter/erzeugter PDFs (nur Metadaten, keine Dateiablage).
+class PdfHistoryService {
+  PdfHistoryService._();
+  static const _key = 'handwerkpro_pdf_history_v1';
+  static const _max = 30;
+
+  static Future<List<PdfHistoryEntry>> load() async {
+    final p = await SharedPreferences.getInstance();
+    final raw = p.getString(_key);
+    if (raw == null || raw.isEmpty) return [];
+    try {
+      final list = jsonDecode(raw) as List<dynamic>;
+      return list
+          .map((e) => PdfHistoryEntry.fromJson(Map<String, dynamic>.from(e as Map)))
+          .toList();
+    } catch (_) {
+      return [];
+    }
+  }
+
+  static Future<void> add({
+    required String title,
+    required String rechnungsnummer,
+  }) async {
+    final p = await SharedPreferences.getInstance();
+    final existing = await load();
+    existing.insert(
+      0,
+      PdfHistoryEntry(
+        at: DateTime.now(),
+        title: title,
+        rechnungsnummer: rechnungsnummer,
+      ),
+    );
+    final trimmed = existing.take(_max).toList();
+    await p.setString(
+      _key,
+      jsonEncode(trimmed.map((e) => e.toJson()).toList()),
+    );
+  }
+
+  static Future<void> clear() async {
+    final p = await SharedPreferences.getInstance();
+    await p.remove(_key);
+  }
+}