import 'package:flutter/painting.dart';
import 'package:shared_preferences/shared_preferences.dart';
import '../business_logic/auth/oauth.dart' as oauth;

class Settings {
  late String instanceUrl;
  static const String instanceUrlKey = "instance-url";
  late String authCode;
  static const String authCodeKey = "authcode";
  late Locale locale;
  static const localeKey = "active-locale";
  late String clientSecret;
  static const clientSecretKey = "client-secret";
  late String clientId;
  static const clientIdKey = "client-id";
  late String token;
  static const tokenKey = "access-token";
  late int batchSize;
  static const batchSizeKey = "post-batch-size";
  late SharedPreferences prefs;

  Settings._create();

  static Future<Settings> create() async {
    Settings settings = Settings._create();

    settings.prefs = await SharedPreferences.getInstance();
    settings.instanceUrl =
        settings.prefs.getString(instanceUrlKey) ?? "example.com";
    settings.authCode = settings.prefs.getString(authCodeKey) ?? "";
    settings.locale = Locale(settings.prefs.getString(localeKey) ?? "en");
    settings.clientSecret = settings.prefs.getString(clientSecretKey) ?? "";
    settings.clientId = settings.prefs.getString(clientIdKey) ?? "";
    settings.token = settings.prefs.getString(tokenKey) ?? "";
    settings.batchSize = settings.prefs.getInt(batchSizeKey) ?? 20;
    if (settings.batchSize < 5) {
      settings.batchSize = 5;
    }

    return settings;
  }

  Future<bool> saveInstanceUrl(String url) async {
    instanceUrl = url;
    return await prefs.setString(instanceUrlKey, url);
  }

  Future<bool> saveAuthCode(String code) async {
    authCode = code;
    return await prefs.setString(authCodeKey, code);
  }

  Future<bool> saveLocale(String locale) async {
    this.locale = Locale(locale);
    return await prefs.setString(localeKey, locale);
  }

  Future<void> saveApp(oauth.App app) async {
    clientId = app.clientId;
    clientSecret = clientSecret;
    prefs.setString(clientSecretKey, app.clientSecret);
    prefs.setString(clientIdKey, app.clientId);
  }

  Future<bool> saveToken(String token) async {
    this.token = token;
    return await prefs.setString(tokenKey, token);
  }

  Future<bool> saveBatchSize(int size) async {
    batchSize = size;
    return await prefs.setInt(batchSizeKey, size);
  }
}