import 'dart:convert';
import 'dart:io';

import 'package:json_annotation/json_annotation.dart';
import 'package:path_provider/path_provider.dart';
import 'package:path/path.dart' as p;

part 'appconfig.g.dart';

@JsonSerializable()
class AppConfig {
  List<Device> devices = [];

  AppConfig._constructor();
  static AppConfig _instance = AppConfig._constructor();

  factory AppConfig({Map<String, dynamic>? json}) {
    if (json != null) {
      _instance = _$AppConfigFromJson(json);
    }

    return _instance;
  }

  Map<String, dynamic> toJson() => _$AppConfigToJson(this);

  /// Saves configuration to file.
  ///
  /// WARN: This method assumes the config file already exists.
  Future<void> save() async {
    final appDocsDir = await getApplicationDocumentsDirectory();
    var configFile = File(p.join(appDocsDir.path, "app.json"));
    await configFile.writeAsString(jsonEncode(toJson()));
  }
}

@JsonSerializable()
class Device {
  String name;
  String routerSsid;
  String routerBssid;
  String networkPassword;
  String? ip;
  String? bssid;

  Device({
    required this.name,
    required this.routerSsid,
    required this.routerBssid,
    this.networkPassword = "",
  });

  factory Device.fromJson(Map<String, dynamic> json) => _$DeviceFromJson(json);

  Map<String, dynamic> toJson() => _$DeviceToJson(this);
}