refactor: Projektstruktur in app/ und backend/ aufgeteilt

app/lib/models/task.dart

@@ -0,0 +1,198 @@
+// Import all task types
+import 'tasks/generic_task.dart';
+import 'tasks/confirmation_task.dart';
+import 'tasks/photo_task.dart';
+import 'tasks/todolist_task.dart';
+import 'tasks/signature_task.dart';
+import 'tasks/barcode_task.dart';
+import 'tasks/comment_task.dart';
+
+abstract class Task {
+  final String id;
+  final String jobId;
+  final int? stationOrder;
+  final bool completed;
+  final bool optional;
+  final DateTime? completedAt;
+  final String? completedBy;
+  final int? taskOrder;
+  final String? title;
+  final String? description;
+  final String? displayName;
+
+  Task({
+    required this.id,
+    required this.jobId,
+    this.stationOrder,
+    this.completed = false,
+    this.optional = false,
+    this.completedAt,
+    this.completedBy,
+    this.taskOrder,
+    this.title,
+    this.description,
+    this.displayName,
+  });
+
+  factory Task.fromJson(Map<String, dynamic> json) {
+    // Get task specific data to determine task type
+    final taskSpecificData = json['taskSpecificData'] as Map<String, dynamic>?;
+    final taskType =
+        (taskSpecificData?['taskType'] ?? json['taskType'])?.toString();
+
+    // Create specific task type based on taskType
+    switch (taskType) {
+      case 'CONFIRMATION':
+        return ConfirmationTask.fromJson(json);
+      case 'PHOTO':
+        return PhotoTask.fromJson(json);
+      case 'TODOLIST':
+        return TodoListTask.fromJson(json);
+      case 'SIGNATURE':
+        return SignatureTask.fromJson(json);
+      case 'BARCODE':
+        return BarcodeTask.fromJson(json);
+      case 'COMMENT':
+        return CommentTask.fromJson(json);
+      case 'GENERIC':
+        return GenericTask.fromJson(json);
+      default:
+        // Fallback to a generic task if no specific type is found
+        return GenericTask.fromJson(json);
+    }
+  }
+
+  Map<String, dynamic> toJson();
+
+  Task copyWith({
+    String? id,
+    String? jobId,
+    int? stationOrder,
+    bool? completed,
+    bool? optional,
+    DateTime? completedAt,
+    String? completedBy,
+    int? taskOrder,
+    String? title,
+    String? description,
+    String? displayName,
+  });
+
+  @override
+  String toString() {
+    return 'Task(id: $id, jobId: $jobId, stationOrder: $stationOrder, completed: $completed, taskOrder: $taskOrder)';
+  }
+
+  @override
+  bool operator ==(Object other) {
+    if (identical(this, other)) return true;
+    return other is Task && other.id == id;
+  }
+
+  @override
+  int get hashCode => id.hashCode;
+
+  /// Parse DateTime from either string or array format
+  static DateTime? _parseDateTime(dynamic value) {
+    if (value == null) return null;
+
+    if (value is String) {
+      return DateTime.tryParse(value);
+    }
+
+    if (value is List && value.isNotEmpty) {
+      try {
+        // Array format: [year, month, day, hour, minute, second, microsecond]
+        final year = value[0] as int;
+        final month = value.length > 1 ? value[1] as int : 1;
+        final day = value.length > 2 ? value[2] as int : 1;
+        final hour = value.length > 3 ? value[3] as int : 0;
+        final minute = value.length > 4 ? value[4] as int : 0;
+        final second = value.length > 5 ? value[5] as int : 0;
+        final microsecond = value.length > 6 ? value[6] as int : 0;
+
+        return DateTime(year, month, day, hour, minute, second, microsecond);
+      } catch (e) {
+        return null;
+      }
+    }
+
+    return null;
+  }
+
+  static String? _readOptionalString(dynamic value) {
+    if (value == null) {
+      return null;
+    }
+    if (value is String) {
+      return value;
+    }
+    if (value is num || value is bool) {
+      return value.toString();
+    }
+    return null;
+  }
+
+  static int? _readOptionalInt(dynamic value) {
+    if (value is int) {
+      return value;
+    }
+    if (value is num) {
+      return value.toInt();
+    }
+    if (value is String) {
+      return int.tryParse(value);
+    }
+    return null;
+  }
+
+  // Helper method to parse common properties
+  static Map<String, dynamic> parseCommonProperties(Map<String, dynamic> json) {
+    // Parse the complex id object - can be either a Map or a simple string
+    String idValue = '';
+    if (json['id'] is Map) {
+      final idMap = json['id'] as Map<String, dynamic>;
+      idValue = idMap['timestamp']?.toString() ?? '';
+    } else {
+      idValue = json['id']?.toString() ?? '';
+    }
+
+    // Parse the complex jobId object - can be either a Map or a simple string
+    String jobIdValue = '';
+    if (json['jobId'] is Map) {
+      final jobIdMap = json['jobId'] as Map<String, dynamic>;
+      jobIdValue = jobIdMap['timestamp']?.toString() ?? '';
+    } else {
+      jobIdValue = json['jobId']?.toString() ?? '';
+    }
+
+    // Parse completedAt using the helper method to handle both string and array formats
+    final completedAt = _parseDateTime(json['completedAt']);
+
+    final taskSpecificData = json['taskSpecificData'] as Map<String, dynamic>?;
+    final stationOrder = _readOptionalInt(json['stationOrder']);
+    final title = _readOptionalString(
+      json['title'] ?? taskSpecificData?['title'],
+    );
+    final description = _readOptionalString(
+      json['description'] ?? taskSpecificData?['description'],
+    );
+    final displayName = _readOptionalString(
+      json['displayName'] ?? taskSpecificData?['displayName'],
+    );
+
+    return {
+      'id': idValue,
+      'jobId': jobIdValue,
+      'stationOrder': stationOrder,
+      'completed': json['completed'] ?? false,
+      'optional': json['optional'] ?? false,
+      'completedAt': completedAt,
+      'completedBy': json['completedBy'],
+      'taskOrder': json['taskOrder'],
+      'title': title,
+      'description': description,
+      'displayName': displayName,
+    };
+  }
+}