refactor providers e basi per spedizioni

lib/features/documents/models/shipment_document_model.dart

@@ -0,0 +1,64 @@
+import 'package:equatable/equatable.dart';
+
+class ShipmentDocumentModel extends Equatable {
+  final String? id;
+  final String companyId;
+  final String ticketId;
+  final String providerId;
+  final String destinationLocationId;
+  final String docNumber;
+  final DateTime docDate;
+  final int packageCount;
+  final double? weight;
+  final String shippingReason;
+  final String? notes;
+
+  const ShipmentDocumentModel({
+    this.id,
+    required this.companyId,
+    required this.ticketId,
+    required this.providerId,
+    required this.destinationLocationId,
+    required this.docNumber,
+    required this.docDate,
+    this.packageCount = 1,
+    this.weight,
+    this.shippingReason = 'Riparazione esterna',
+    this.notes,
+  });
+
+  factory ShipmentDocumentModel.fromMap(Map<String, dynamic> map) {
+    return ShipmentDocumentModel(
+      id: map['id'],
+      companyId: map['company_id'],
+      ticketId: map['ticket_id'],
+      providerId: map['provider_id'],
+      destinationLocationId: map['destination_location_id'],
+      docNumber: map['doc_number'],
+      docDate: DateTime.parse(map['doc_date']),
+      packageCount: map['package_count'] ?? 1,
+      weight: map['weight'] != null ? (map['weight'] as num).toDouble() : null,
+      shippingReason: map['shipping_reason'] ?? 'Riparazione esterna',
+      notes: map['notes'],
+    );
+  }
+
+  Map<String, dynamic> toMap() {
+    return {
+      if (id != null) 'id': id,
+      'company_id': companyId,
+      'ticket_id': ticketId,
+      'provider_id': providerId,
+      'destination_location_id': destinationLocationId,
+      'doc_number': docNumber,
+      'doc_date': docDate.toIso8601String(),
+      'package_count': packageCount,
+      'weight': weight,
+      'shipping_reason': shippingReason,
+      'notes': notes,
+    };
+  }
+
+  @override
+  List<Object?> get props => [id, docNumber, ticketId];
+}