import 'package:freezed_annotation/freezed_annotation.dart';
import 'package:superport/data/models/equipment/equipment_dto.dart';
import 'package:superport/data/models/warehouse/warehouse_dto.dart';

part 'equipment_history_dto.freezed.dart';
part 'equipment_history_dto.g.dart';

@freezed
class EquipmentHistoryDto with _$EquipmentHistoryDto {
  const EquipmentHistoryDto._(); // Private constructor for getters

  const factory EquipmentHistoryDto({
    // 백엔드 실제 필드명과 정확 일치
    @JsonKey(name: 'id') int? id,
    @JsonKey(name: 'equipments_id') required int equipmentsId,
    @JsonKey(name: 'warehouses_id') required int warehousesId,
    @JsonKey(name: 'transaction_type') required String transactionType,
    required int quantity,
    @JsonKey(name: 'transacted_at') required DateTime transactedAt,
    String? remark,
    @JsonKey(name: 'is_deleted') @Default(false) bool isDeleted,
    @JsonKey(name: 'created_at') required DateTime createdAt,
    @JsonKey(name: 'updated_at') DateTime? updatedAt,
    
    // 백엔드 추가 필드들
    @JsonKey(name: 'equipment_serial') String? equipmentSerial,
    @JsonKey(name: 'warehouse_name') String? warehouseName,
    @JsonKey(name: 'companies') @Default([]) List<Map<String, dynamic>> companies,
    
    // Related entities (optional, populated in GET requests)
    EquipmentDto? equipment,
    WarehouseDto? warehouse,
  }) = _EquipmentHistoryDto;

  // isActive 계산 속성 (is_deleted의 반대)
  bool get isActive => !isDeleted;

  factory EquipmentHistoryDto.fromJson(Map<String, dynamic> json) =>
      _$EquipmentHistoryDtoFromJson(json);
}

@freezed
class EquipmentHistoryRequestDto with _$EquipmentHistoryRequestDto {
  const factory EquipmentHistoryRequestDto({
    @JsonKey(name: 'equipments_id') required int equipmentsId,
    @JsonKey(name: 'warehouses_id') int? warehousesId,  // 출고 시 null 가능 (다른 회사로 완전 이관)
    @JsonKey(name: 'company_ids') List<int>? companyIds,  // 백엔드 API 매칭
    @JsonKey(name: 'transaction_type') required String transactionType,
    required int quantity,
    @JsonKey(name: 'transacted_at') DateTime? transactedAt,
    String? remark,
  }) = _EquipmentHistoryRequestDto;

  factory EquipmentHistoryRequestDto.fromJson(Map<String, dynamic> json) =>
      _$EquipmentHistoryRequestDtoFromJson(json);
}

@freezed
class EquipmentHistoryUpdateRequestDto with _$EquipmentHistoryUpdateRequestDto {
  const factory EquipmentHistoryUpdateRequestDto({
    @JsonKey(name: 'warehouses_id') int? warehousesId,
    @JsonKey(name: 'transaction_type') String? transactionType,
    int? quantity,
    @JsonKey(name: 'transacted_at') DateTime? transactedAt,
    String? remark,
  }) = _EquipmentHistoryUpdateRequestDto;

  factory EquipmentHistoryUpdateRequestDto.fromJson(Map<String, dynamic> json) =>
      _$EquipmentHistoryUpdateRequestDtoFromJson(json);
}

@freezed
class EquipmentHistoryListResponse with _$EquipmentHistoryListResponse {
  const factory EquipmentHistoryListResponse({
    @JsonKey(name: 'data') required List<EquipmentHistoryDto> items,
    @JsonKey(name: 'total') required int totalCount,
    @JsonKey(name: 'page') required int currentPage,
    @JsonKey(name: 'total_pages') required int totalPages,
    @JsonKey(name: 'page_size') int? pageSize,
  }) = _EquipmentHistoryListResponse;

  factory EquipmentHistoryListResponse.fromJson(Map<String, dynamic> json) =>
      _$EquipmentHistoryListResponseFromJson(json);
}

// Transaction Type 헬퍼 (백엔드 실제 사용 타입들)
class TransactionType {
  static const String input = 'I';     // 입고
  static const String output = 'O';    // 출고  
  static const String rent = 'R';      // 대여
  static const String dispose = 'D';   // 폐기
  
  static String getDisplayName(String type) {
    switch (type) {
      case input:
        return '입고';
      case output:
        return '출고';
      case rent:
        return '대여';
      case dispose:
        return '폐기';
      default:
        return type;
    }
  }
  
  static List<String> get allTypes => [input, output, rent, dispose];
}