import 'dart:convert';

import 'package:easy_localization/easy_localization.dart';
import 'package:obtainium/custom_errors.dart';
import 'package:obtainium/providers/source_provider.dart';

class Aptoide extends AppSource {
  Aptoide() {
    host = 'aptoide.com';
    name = tr('Aptoide');
    allowSubDomains = true;
  }

  @override
  String sourceSpecificStandardizeURL(String url) {
    RegExp standardUrlRegEx = RegExp('^https?://([^\\.]+\\.){2,}$host');
    RegExpMatch? match = standardUrlRegEx.firstMatch(url.toLowerCase());
    if (match == null) {
      throw InvalidURLError(name);
    }
    return url.substring(0, match.end);
  }

  @override
  Future<String?> tryInferringAppId(String standardUrl,
      {Map<String, dynamic> additionalSettings = const {}}) async {
    return (await getAppDetailsJSON(standardUrl))['package'];
  }

  Future<Map<String, dynamic>> getAppDetailsJSON(String standardUrl) async {
    var res = await sourceRequest(standardUrl);
    if (res.statusCode != 200) {
      throw getObtainiumHttpError(res);
    }
    var idMatch = RegExp('"app":{"id":[0-9]+').firstMatch(res.body);
    String? id;
    if (idMatch != null) {
      id = res.body.substring(idMatch.start + 12, idMatch.end);
    } else {
      throw NoReleasesError();
    }
    var res2 =
        await sourceRequest('https://ws2.aptoide.com/api/7/getApp/app_id/$id');
    if (res2.statusCode != 200) {
      throw getObtainiumHttpError(res);
    }
    return jsonDecode(res2.body)?['nodes']?['meta']?['data'];
  }

  @override
  Future<APKDetails> getLatestAPKDetails(
    String standardUrl,
    Map<String, dynamic> additionalSettings,
  ) async {
    var appDetails = await getAppDetailsJSON(standardUrl);
    String appName = appDetails['name'] ?? tr('app');
    String author = appDetails['developer']?['name'] ?? name;
    String? dateStr = appDetails['updated'];
    String? version = appDetails['file']?['vername'];
    String? apkUrl = appDetails['file']?['path'];
    if (version == null) {
      throw NoVersionError();
    }
    if (apkUrl == null) {
      throw NoAPKError();
    }
    DateTime? relDate;
    if (dateStr != null) {
      relDate = DateTime.parse(dateStr);
    }

    return APKDetails(
        version, getApkUrlsFromUrls([apkUrl]), AppNames(author, appName),
        releaseDate: relDate);
  }
}