InventoryAgent/inventory_monitor_app/lib/device.dart

import 'dart:convert';

class PaginatedResult<T> {
  final int pageNumber;
  final int pageSize;
  final int totalCount;
  final List<T> items;

  PaginatedResult({
    required this.pageNumber,
    required this.pageSize,
    required this.totalCount,
    required this.items,
  });

  factory PaginatedResult.fromJson(
      Map<String, dynamic> json, T Function(Map<String, dynamic>) fromJsonT) {
    return PaginatedResult<T>(
      pageNumber: json['pageNumber'],
      pageSize: json['pageSize'],
      totalCount: json['totalCount'],
      items: List<T>.from(json['items'].map((item) => fromJsonT(item))),
    );
  }
}

class Device {
  final int id;
  final String? computerName;
  final String? deviceType;
  final String? serialNumber;
  final String? location;
  final String? processor;
  final String? ram;
  final String? osVersion;
  final DateTime lastSeen;
  final List<MonitorInfo> monitors;
  final List<PrinterInfo> printers;
  final List<StorageDeviceInfo> storageDevices;
  final List<DriveHealthInfo> driveHealth;
  final List<LocalAdminInfo> localAdmins;

  Device({
    required this.id,
    this.computerName,
    this.deviceType,
    this.serialNumber,
    this.location,
    this.processor,
    this.ram,
    this.osVersion,
    required this.lastSeen,
    required this.monitors,
    required this.printers,
    required this.storageDevices,
    required this.driveHealth,
    required this.localAdmins,
  });

  factory Device.fromJson(Map<String, dynamic> json) {
    return Device(
      id: json['id'],
      computerName: json['computerName'],
      deviceType: json['deviceType'],
      serialNumber: json['serialNumber'],
      location: json['location'],
      processor: json['processor'],
      ram: json['ram'],
      osVersion: json['osVersion'],
      lastSeen: DateTime.parse(json['lastSeen']),
      monitors:
          _parseJsonList(json['monitors'], (j) => MonitorInfo.fromJson(j)),
      printers:
          _parseJsonList(json['printers'], (j) => PrinterInfo.fromJson(j)),
      storageDevices: _parseJsonList(
          json['storageDevices'], (j) => StorageDeviceInfo.fromJson(j)),
      driveHealth: _parseJsonList(
          json['driveHealth'], (j) => DriveHealthInfo.fromJson(j)),
      localAdmins: _parseJsonList(
          json['localAdmins'], (j) => LocalAdminInfo.fromJson(j)),
    );
  }

  static List<T> _parseJsonList<T>(
      String? jsonString, T Function(Map<String, dynamic>) fromJson) {
    if (jsonString == null || jsonString.isEmpty) return [];
    try {
      final List<dynamic> decoded = json.decode(jsonString);
      return decoded
          .map((item) => fromJson(item as Map<String, dynamic>))
          .toList();
    } catch (e) {
      return [];
    }
  }
}

class MonitorInfo {
  final String? model;
  final String? serialNumber;
  MonitorInfo({this.model, this.serialNumber});
  factory MonitorInfo.fromJson(Map<String, dynamic> json) =>
      MonitorInfo(model: json['Model'], serialNumber: json['SerialNumber']);
}

class PrinterInfo {
  final String? name;
  final String? serialNumber;
  final bool isNetwork;
  PrinterInfo({this.name, this.serialNumber, required this.isNetwork});
  factory PrinterInfo.fromJson(Map<String, dynamic> json) => PrinterInfo(
      name: json['Name'],
      serialNumber: json['SerialNumber'],
      isNetwork: json['IsNetwork']);
}

class StorageDeviceInfo {
  final String? model;
  final String? serialNumber;
  final String? mediaType;
  final int size;
  StorageDeviceInfo(
      {this.model, this.serialNumber, this.mediaType, required this.size});
  factory StorageDeviceInfo.fromJson(Map<String, dynamic> json) =>
      StorageDeviceInfo(
        model: json['Model'],
        serialNumber: json['SerialNumber'],
        mediaType: json['MediaType'],
        size: json['Size'] ?? 0,
      );
}

class DriveHealthInfo {
  final String? model;
  final bool? isFailing;
  final double? healthPercentage;
  DriveHealthInfo({this.model, this.isFailing, this.healthPercentage});
  factory DriveHealthInfo.fromJson(Map<String, dynamic> json) =>
      DriveHealthInfo(
        model: json['Model'],
        isFailing: json['IsFailing'],
        healthPercentage: (json['HealthPercentage'] as num?)?.toDouble(),
      );
}

class LocalAdminInfo {
  final String? name;
  final String? accountType;
  final String? source;
  LocalAdminInfo({this.name, this.accountType, this.source});
  factory LocalAdminInfo.fromJson(Map<String, dynamic> json) => LocalAdminInfo(
        name: json['Name'],
        accountType: json['AccountType'],
        source: json['Source'],
      );
}