import 'dart:io';

import 'package:dio/dio.dart';
import 'package:markdown/markdown.dart';
import 'package:starcitizen_doctor/api/api.dart';
import 'package:starcitizen_doctor/base/ui_model.dart';
import 'package:starcitizen_doctor/common/conf/app_conf.dart';
import 'package:starcitizen_doctor/common/conf/url_conf.dart';
import 'package:starcitizen_doctor/common/helper/system_helper.dart';
import 'package:url_launcher/url_launcher_string.dart';
import 'package:html/parser.dart';

class UpgradeDialogUIModel extends BaseUIModel {
  String? description;
  String targetVersion = "";
  String downloadUrl = "";
  String? diversionDownloadUrl;
  bool isUsingDiversion = false;

  bool isUpgrading = false;
  double? progress;

  @override
  Future loadData() async {
    // get download url for gitlab release
    try {
      targetVersion = AppConf.isMSE
          ? AppConf.networkVersionData!.mSELastVersion!
          : AppConf.networkVersionData!.lastVersion!;
      final r = await Api.getAppReleaseDataByVersionName(targetVersion);
      description = r["body"];
      _checkDiversionUrl();
      final assets = List.of(r["assets"] ?? []);
      for (var asset in assets) {
        if (asset["name"].toString().endsWith("SETUP.exe")) {
          downloadUrl = asset["browser_download_url"];
        }
      }
      notifyListeners();
    } catch (e) {
      dPrint("UpgradeDialogUIModel.loadData Error : $e");
      Navigator.pop(context!, false);
    }
  }

  doUpgrade() async {
    if (AppConf.isMSE) {
      launchUrlString("ms-windows-store://pdp/?productid=9NF3SWFWNKL1");
      await Future.delayed(const Duration(seconds: 3));
      if (AppConf.appVersionCode <
          (AppConf.networkVersionData?.minVersionCode ?? 0)) {
        exit(0);
      }
      Navigator.pop(context!);
    }
    isUpgrading = true;
    notifyListeners();
    final fileName = "${AppConf.getUpgradePath()}/next_SETUP.exe";
    try {
      // check diversionDownloadUrl
      var url = downloadUrl;
      final dio = Dio();
      if (diversionDownloadUrl != null) {
        try {
          final resp = await dio.head(diversionDownloadUrl!,
              options: Options(
                  sendTimeout: const Duration(seconds: 10),
                  receiveTimeout: const Duration(seconds: 10)));
          if (resp.statusCode == 200) {
            isUsingDiversion = true;
            url = diversionDownloadUrl!;
            notifyListeners();
          } else {
            isUsingDiversion = false;
            notifyListeners();
          }
          dPrint("diversionDownloadUrl head resp == ${resp.headers}");
        } catch (e) {
          dPrint("diversionDownloadUrl err:$e");
        }
      }
      await dio.download(url, fileName,
          onReceiveProgress: (int count, int total) {
        progress = (count / total) * 100;
        notifyListeners();
      });
    } catch (_) {
      isUpgrading = false;
      progress = null;
      showToast(context!, "下载失败，请尝试手动安装！");
      notifyListeners();
      return;
    }

    try {
      final r = await (Process.run(
          SystemHelper.powershellPath, ["start", fileName, "/SILENT"]));
      if (r.stderr.toString().isNotEmpty) {
        throw r.stderr;
      }
      exit(0);
    } catch (_) {
      isUpgrading = false;
      progress = null;
      showToast(context!, "运行失败，请尝试手动安装！");
      Process.run(SystemHelper.powershellPath,
          ["explorer.exe", "/select,\"$fileName\""]);
      notifyListeners();
    }
  }

  void doCancel() {
    Navigator.pop(context!, true);
  }

  void _checkDiversionUrl() {
    try {
      final htmlStr = markdownToHtml(description!);
      final html = parse(htmlStr);
      html.querySelectorAll('a').forEach((element) {
        String linkText = element.text;
        String linkUrl = element.attributes['href'] ?? '';
        if (linkText.trim().endsWith("_SETUP.exe")) {
          diversionDownloadUrl = linkUrl.trim();
          dPrint("diversionDownloadUrl === $diversionDownloadUrl");
        }
      });
    } catch (e) {
      dPrint("_checkDiversionUrl Error:$e");
    }
  }

  void launchReleaseUrl() {
    launchUrlString(URLConf.devReleaseUrl);
  }
}