problem_check_system/lib/data/models/server_problem.dart

import 'package:flutter/material.dart';

@immutable
class ServerProblem {
  final String id;
  final String title;
  final String location;
  final String? censorTaskId;
  final String? rowId;
  final String? bindData;
  final List<String>? imageUrls;
  final DateTime creationTime;
  final String creatorId;
  final DateTime lastModificationTime;
  final String lastModifierId;

  const ServerProblem({
    required this.id,
    required this.title,
    required this.location,
    this.censorTaskId,
    this.rowId,
    this.bindData,
    this.imageUrls,
    required this.creationTime,
    required this.creatorId,
    required this.lastModificationTime,
    required this.lastModifierId,
  });

  factory ServerProblem.fromJson(Map<String, dynamic> json) => ServerProblem(
    id: json['id'] as String,
    title: json['title'] as String,
    location: json['location'] as String,
    censorTaskId: json['censorTaskId'] as String?,
    rowId: json['rowId'] as String?,
    bindData: json['bindData'] as String?,
    imageUrls: json['imageUrls'] as List<String>?,
    creationTime: DateTime.parse(json['creationTime'] as String),
    creatorId: json['creatorId'] as String,
    lastModificationTime: DateTime.parse(
      json['lastModificationTime'] as String,
    ),
    lastModifierId: json['lastModifierId'] as String,
  );

  Map<String, dynamic> toJson() => {
    'id': id,
    'title': title,
    'location': location,
    'censorTaskId': censorTaskId,
    'rowId': rowId,
    'bindData': bindData,
    'imageUrls': imageUrls,
    'creationTime': creationTime.toUtc().toIso8601String(),
    'creatorId': creatorId,
    'lastModificationTime': lastModificationTime.toUtc().toIso8601String(),
    'lastModifierId': lastModifierId,
  };

  ServerProblem copyWith({
    String? id,
    String? title,
    String? location,
    String? censorTaskId,
    String? rowId,
    String? bindData,
    List<String>? imageUrls,
    DateTime? creationTime,
    String? creatorId,
    DateTime? lastModificationTime,
    String? lastModifierId,
  }) {
    return ServerProblem(
      id: id ?? this.id,
      title: title ?? this.title,
      location: location ?? this.location,
      censorTaskId: censorTaskId ?? this.censorTaskId,
      rowId: rowId ?? this.rowId,
      bindData: bindData ?? this.bindData,
      imageUrls: imageUrls ?? this.imageUrls,
      creationTime: creationTime ?? this.creationTime,
      creatorId: creatorId ?? this.creatorId,
      lastModificationTime: lastModificationTime ?? this.lastModificationTime,
      lastModifierId: lastModifierId ?? this.lastModifierId,
    );
  }
}