import 'dart:io';

import 'package:dio/dio.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:install_plugin/install_plugin.dart';
import 'package:news_getx/data/model/app.dart';
import 'package:news_getx/data/repository/app_repository.dart';
import 'package:news_getx/data/services/config.dart';
import 'package:path_provider/path_provider.dart';

//  todo 如何用完一次就消失
class DownloadController extends GetxController {
  // 进度条
  var _progressValue = 0.0.obs;

  double get progressValue => _progressValue.value;

  set progressValue(double value) {
    _progressValue.value = value;
  }

  /// 下载文件 & 安装
  Future<void> _downloadAPKAndSetup(fileUrl) async {
    _progressValue.value = 0.0;

    // 下载
    Directory? externalDir = await getExternalStorageDirectory();

    if (externalDir == null) {
      return;
    }
    // 存储路径
    String fullPath = "${externalDir.path}/release.apk";

    // Dio dio = Dio(BaseOptions(
    //   responseType: ResponseType.bytes,
    //   followRedirects: false,
    //   validateStatus: (status) {
    //     return status! < 500;
    //   }
    // ));
    //
    // // 获取APP文件
    // Response response = await dio.get(fileUrl);
    //
    // // 文件写入
    // File file = File(fullPath);
    // var raf = file.openSync(mode: FileMode.write);
    // raf.writeByteSync(response.data);
    // await raf.close();

    await Dio().download(fileUrl, fullPath, onReceiveProgress: (count, total) {
      final value = count / total;
      if (_progressValue.value != value) {
        if (_progressValue.value < 1.0) {
          _progressValue.value = count / total;
        } else {
          _progressValue.value = 0.0;
        }
        print("${(_progressValue * 100).toStringAsFixed(0)}%");
      }
    });

    // 安装
    await InstallPlugin.installApk(fullPath);
  }
}

/// App 更新
class AppUpdateUtil {
  static AppUpdateUtil _instance = AppUpdateUtil._internal();

  factory AppUpdateUtil() => _instance;

  AppUpdateUtil._internal();

  AppUpdateResponse? _appUpdateInfo;

  /// 获取更新信息
  Future run() async {
    // 提交 设备类型、发行渠道、架构、机型
    AppUpdateRequest appUpdateRequest = AppUpdateRequest(
      device: Platform.isIOS ? "ios" : "android",
      channel: ConfigService.channel,
      architecture: ConfigService.isIOS
          ? ConfigService.iosDeviceInfo!.utsname.machine
          : ConfigService.androidDeviceInfo!.device,
      model: ConfigService.isIOS
          ? ConfigService.iosDeviceInfo!.name
          : ConfigService.androidDeviceInfo!.brand,
    );

    _appUpdateInfo = await AppRepository().update(appUpdateRequest);

    _runAppUpdate();
  }

  /// 检查是否有新版
  Future _runAppUpdate() async {
    // 比较版本
    final isNewVersion =
        _appUpdateInfo!.latestVersion!.compareTo(ConfigService.to.version) > 0;

    // 发现新版本
    if (isNewVersion) {
      // todo 确认弹窗 确认完成下载并显示进度条
      Get.defaultDialog(
        title: "发现新版本 ${_appUpdateInfo!.latestVersion}",
        content: GetBuilder<DownloadController>(
          init: DownloadController(),
          builder: (controller) {
            return LinearProgressIndicator(value: controller.progressValue);
          },
        ),
      );

      // _appUpdateConformDialog(
      //
      // );
    }
  }

  /// 升级确认对话框
  void _appUpdateConformDialog(VoidCallback onPressed) {}
}