Printer Local data and remove unused

lib/data/models/response/print_model.dart

@@ -5,6 +5,8 @@ class PrintModel {
   final String address;
   final String paper;
   final String type;
+  final DateTime? createdAt;
+  final DateTime? updatedAt;
 
   PrintModel({
     this.id,
@@ -13,26 +15,130 @@ class PrintModel {
     required this.address,
     required this.paper,
     required this.type,
+    this.createdAt,
+    this.updatedAt,
   });
 
-  // from map
+  // Factory constructor from map (updated)
   factory PrintModel.fromMap(Map<String, dynamic> map) {
     return PrintModel(
-      id: map['id'],
-      code: map['code'],
-      name: map['name'],
-      address: map['address'],
-      paper: map['paper'],
-      type: map['type'],
+      id: map['id'] as int?,
+      code: map['code'] as String,
+      name: map['name'] as String,
+      address: map['address'] as String,
+      paper: map['paper'] as String,
+      type: map['type'] as String,
+      createdAt: map['created_at'] != null
+          ? DateTime.tryParse(map['created_at'] as String)
+          : null,
+      updatedAt: map['updated_at'] != null
+          ? DateTime.tryParse(map['updated_at'] as String)
+          : null,
     );
   }
 
-  // to map
-  Map<String, dynamic> toMap() => {
-        "code": code,
-        "name": name,
-        "address": address,
-        "paper": paper,
-        "type": type,
-      };
+  // Convert to map for database insertion (without id, with timestamps)
+  Map<String, dynamic> toMapForInsert() {
+    final now = DateTime.now().toIso8601String();
+    return {
+      'code': code,
+      'name': name,
+      'address': address,
+      'paper': paper,
+      'type': type,
+      'created_at': now,
+      'updated_at': now,
+    };
+  }
+
+  // Convert to map for database update (without id and created_at)
+  Map<String, dynamic> toMapForUpdate() {
+    return {
+      'code': code,
+      'name': name,
+      'address': address,
+      'paper': paper,
+      'type': type,
+      'updated_at': DateTime.now().toIso8601String(),
+    };
+  }
+
+  // Convert to complete map (original method, enhanced)
+  Map<String, dynamic> toMap() {
+    return {
+      if (id != null) 'id': id,
+      'code': code,
+      'name': name,
+      'address': address,
+      'paper': paper,
+      'type': type,
+      if (createdAt != null) 'created_at': createdAt!.toIso8601String(),
+      if (updatedAt != null) 'updated_at': updatedAt!.toIso8601String(),
+    };
+  }
+
+  // Copy with method for creating modified instances
+  PrintModel copyWith({
+    int? id,
+    String? code,
+    String? name,
+    String? address,
+    String? paper,
+    String? type,
+    DateTime? createdAt,
+    DateTime? updatedAt,
+  }) {
+    return PrintModel(
+      id: id ?? this.id,
+      code: code ?? this.code,
+      name: name ?? this.name,
+      address: address ?? this.address,
+      paper: paper ?? this.paper,
+      type: type ?? this.type,
+      createdAt: createdAt ?? this.createdAt,
+      updatedAt: updatedAt ?? this.updatedAt,
+    );
+  }
+
+  // Equality and hashCode
+  @override
+  bool operator ==(Object other) {
+    if (identical(this, other)) return true;
+    return other is PrintModel &&
+        other.id == id &&
+        other.code == code &&
+        other.name == name &&
+        other.address == address &&
+        other.paper == paper &&
+        other.type == type;
+  }
+
+  @override
+  int get hashCode {
+    return Object.hash(id, code, name, address, paper, type);
+  }
+
+  // String representation for debugging (matches datasource logging)
+  @override
+  String toString() {
+    return 'PrintModel(id: $id, code: $code, name: $name, address: $address, paper: $paper, type: $type, createdAt: $createdAt, updatedAt: $updatedAt)';
+  }
+
+  // Validation methods
+  bool get isValid {
+    return code.isNotEmpty &&
+        name.isNotEmpty &&
+        address.isNotEmpty &&
+        paper.isNotEmpty &&
+        type.isNotEmpty;
+  }
+
+  String? get validationError {
+    if (code.isEmpty) return 'Printer code cannot be empty';
+    if (name.isEmpty) return 'Printer name cannot be empty';
+    if (address.isEmpty) return 'Printer address cannot be empty';
+    if (paper.isEmpty) return 'Paper size cannot be empty';
+    if (type.isEmpty) return 'Printer type cannot be empty';
+    return null;
+  }
 }