import 'package:isar/isar.dart';
import 'package:json_annotation/json_annotation.dart';
import 'package:stadtbote/main.dart';
import 'package:stadtbote/tools/util.dart';

part 'chat_message.g.dart';

@collection
@JsonSerializable()
class ChatMessage {
  late Id id;

  late int time;

  late String from;

  late String subj;

  late String text;

  late bool? read = false;

  ChatMessage();

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

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

  static Future<ChatMessage> mergeFromJson(Map<String, dynamic> json) async {
    var availableMessage = await MyApp.isarInstance.chatMessages.filter().idEqualTo(json["id"]).findFirst();

    if (availableMessage != null) {
      availableMessage.id = json["id"];
      availableMessage.time = json["time"];
      availableMessage.from = json["from"];
      availableMessage.subj = json["subj"];
      availableMessage.text = json['text'];

      return availableMessage;
    } else {
      var message = ChatMessage.fromJson(json);
      message.read = false;

      return message;
    }
  }

  static Future<int> getNextId() async {
    int currentExport500Id = Util.preferencesGetInt('next_message_id', 0) as int;

    currentExport500Id += 1;

    Util.preferencesSaveInt("next_message_id", currentExport500Id);

    return currentExport500Id;
  }
}