import 'dart:async';

import 'package:device_info/device_info.dart';
import 'package:dio/dio.dart';
import 'package:flutter/material.dart';
import 'package:one_key/net/dio_util.dart';
import 'package:one_key/res/colors.dart';
import 'package:one_key/utils/event_bus.dart';
import 'package:one_key/utils/utils.dart';
import 'package:one_key/widgets/system_app_bar.dart';
import 'package:path_provider/path_provider.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:webview_flutter/webview_flutter.dart';

import 'dart:async';
import 'dart:convert';
import 'dart:io';

import 'package:flutter/material.dart';
import 'package:one_key/utils/event_bus.dart';
import 'package:one_key/widgets/app_bar.dart';
import 'package:one_key/widgets/system_app_bar.dart';
import 'package:webview_flutter/webview_flutter.dart';

import 'package:flutter_inappwebview/flutter_inappwebview.dart';
import 'package:url_launcher/url_launcher.dart';
import 'dart:collection';
// import 'package:open_file/open_file.dart';
// import 'package:flutter_downloader/flutter_downloader.dart';

class WebPage extends StatefulWidget {
  final String title;
  final String url;
  final bool need;

  const WebPage({Key key, this.title, this.url, this.need = false})
      : super(key: key);
  @override
  _WebPageState createState() => _WebPageState();
}

class _WebPageState extends State<WebPage> {
  final GlobalKey webViewKey = GlobalKey();

  InAppWebViewController webViewController;
  InAppWebViewGroupOptions options = InAppWebViewGroupOptions(
      crossPlatform: InAppWebViewOptions(
        useShouldOverrideUrlLoading: true,
        useOnDownloadStart: true,
        mediaPlaybackRequiresUserGesture: false,
      ),
      android: AndroidInAppWebViewOptions(
        useHybridComposition: true,
      ),
      ios: IOSInAppWebViewOptions(
        allowsInlineMediaPlayback: true,
      ));

  PullToRefreshController pullToRefreshController;
  ContextMenu contextMenu;
  String url = "";
  double progress = 0;
  final urlController = TextEditingController();
  // Future<void> openFile(filePath) async {
  //   final _result = await OpenFile.open(filePath);
  //   print(_result.message);

  //   // setState(() {
  //   //   _openResult = "type=${_result.type}  message=${_result.message}";
  //   // });
  // }

  @override
  void initState() {
    super.initState();

    // Enable hybrid composition.
    _init();
  }

  Future<bool> _checkPermission() async {
    DeviceInfoPlugin deviceInfo = DeviceInfoPlugin();
    AndroidDeviceInfo androidInfo = await deviceInfo.androidInfo;
    if (Platform.isAndroid && androidInfo.version.sdkInt <= 28) {
      final status = await Permission.storage.status;
      if (status != PermissionStatus.granted) {
        final result = await Permission.storage.request();
        if (result == PermissionStatus.granted) {
          return true;
        }
      } else {
        return true;
      }
    } else {
      return true;
    }
    return false;
  }

  Future<bool> checkPermissionStorage() async {
    var status = await Permission.storage.status;
    if (!status.isGranted) {
      status = await Permission.storage.request();
      if (status.isGranted) {
        return true;
      }
    } else {
      return true;
    }
    return false;
  }

  _init() async {
    // WidgetsFlutterBinding.ensureInitialized();
    // await FlutterDownloader.initialize(debug: true);
    if (Platform.isAndroid) {
      await AndroidInAppWebViewController.setWebContentsDebuggingEnabled(true);

      var swAvailable = await AndroidWebViewFeature.isFeatureSupported(
          AndroidWebViewFeature.SERVICE_WORKER_BASIC_USAGE);
      var swInterceptAvailable = await AndroidWebViewFeature.isFeatureSupported(
          AndroidWebViewFeature.SERVICE_WORKER_SHOULD_INTERCEPT_REQUEST);

      if (swAvailable && swInterceptAvailable) {
        AndroidServiceWorkerController serviceWorkerController =
            AndroidServiceWorkerController.instance();

        serviceWorkerController.serviceWorkerClient =
            AndroidServiceWorkerClient(
          shouldInterceptRequest: (request) async {
            print(request);
            return null;
          },
        );
      }
    }
    // await FlutterDownloader.initialize(
    //     debug: true // optional: set false to disable printing logs to console
    //     );
    await Permission.storage.request();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        // We're using a Builder here so we have a context that is below the Scaffold
        // to allow calling Scaffold.of(context) so we can show a snackbar.
        appBar: SystemAppBar(
          widget.title,
          onTap: () {
            if (widget.need) {
              Utils.changeStatusColor(color: MyColours.color_199095);
            }
            Navigator.of(context).pop();
          },
        ),
        body: WillPopScope(
            onWillPop: () async {
              if (widget.need) {
                Utils.changeStatusColor(color: MyColours.color_199095);
              }
              return true;
            },
            child: Column(
              children: [
                Expanded(
                    child: InAppWebView(
                  key: webViewKey,
                  // contextMenu: contextMenu,
                  initialUrlRequest: URLRequest(
                      url: Uri.parse("http://colorcun.com/privacy1.html")),
                  // initialFile: "assets/index.html",
                  initialUserScripts: UnmodifiableListView<UserScript>([]),
                  initialOptions: options,
                  pullToRefreshController: pullToRefreshController,
                  onWebViewCreated: (controller) {
                    webViewController = controller;
                  },
                  onLoadStart: (controller, url) {
                    setState(() {
                      this.url = url.toString();
                      urlController.text = this.url;
                    });
                  },
                  androidOnPermissionRequest:
                      (controller, origin, resources) async {
                    return PermissionRequestResponse(
                        resources: resources,
                        action: PermissionRequestResponseAction.GRANT);
                  },
                  shouldOverrideUrlLoading:
                      (controller, navigationAction) async {
                    var uri = navigationAction.request.url;

                    if (![
                      "http",
                      "https",
                      "file",
                      "chrome",
                      "data",
                      "javascript",
                      "about"
                    ].contains(uri.scheme)) {
                      if (await canLaunch(url)) {
                        // Launch the App
                        await launch(
                          url,
                        );
                        // and cancel the request
                        return NavigationActionPolicy.CANCEL;
                      }
                    }

                    return NavigationActionPolicy.ALLOW;
                  },
                  onLoadStop: (controller, url) async {
                    pullToRefreshController.endRefreshing();
                    setState(() {
                      this.url = url.toString();
                      urlController.text = this.url;
                    });
                  },
                  onLoadError: (controller, url, code, message) {
                    pullToRefreshController.endRefreshing();
                  },
                  onProgressChanged: (controller, progress) {
                    if (progress == 100) {
                      pullToRefreshController.endRefreshing();
                    }
                    setState(() {
                      this.progress = progress / 100;
                      urlController.text = this.url;
                    });
                  },
                  onUpdateVisitedHistory: (controller, url, androidIsReload) {
                    setState(() {
                      this.url = url.toString();
                      urlController.text = this.url;
                    });
                  },
                  onConsoleMessage: (controller, consoleMessage) {
                    print(consoleMessage);
                  },
                  onDownloadStart: (controller, url) async {
                    print("onDownloadStart $url");
                    Utils.showToast('开始下载...');
                    // final taskId = await FlutterDownloader.enqueue(
                    //   url: url.toString(),
                    //   savedDir: (await getExternalStorageDirectory()).path,
                    //   showNotification:
                    //       true, // show download progress in status bar (for Android)
                    //   openFileFromNotification:
                    //       true, // click on notification to open downloaded file (for Android)
                    // );
                    final dir = await getExternalStorageDirectory();
                    String savePath = dir.path + "/one_key";

                    Directory directory = new Directory(savePath);
                    if (directory.existsSync()) {
                      //删除历史apk
                      final List<FileSystemEntity> files = directory.listSync();
                      for (FileSystemEntity file in files) {
                        file.deleteSync();
                      }
                    }
                    DioUtil().download(url.toString(), savePath,
                        onProgress: (received, total) {
                      // if (_progress != 100) {
                      //   int progress = ((received / total) * 100).round();
                      //   _progress = progress;
                      //   _setState(() {});
                      // }
                      if (received == total) {
                        print('object');
                        Utils.showToast('文件已保存在${savePath}');
                        // openFile(savePath);
                        //下载完成
                        // InstallPlugin.installApk(savePath, "com.naji.one_key");
                      }
                    });
                    // },
                    // DioUtil().download(url.toString(),
                    //     (await getExternalStorageDirectory()).path,
                    //     onProgress: (received, total) {
                    //   // if (_progress != 100) {
                    //   //   int progress = ((received / total) * 100).round();
                    //   //   _progress = progress;
                    //   //   _setState(() {});
                    //   // }
                    //   if (received == total) {
                    //     //下载完成
                    //     // InstallPlugin.installApk(savePath, "com.naji.one_key");
                    //   }
                    // });
                  },
                ))
              ],
            )
            //  Builder(builder: (BuildContext context) {
            //   return WebView(
            //     initialUrl: "http://colorcun.com/privacy1.html",
            //     javascriptMode: JavascriptMode.unrestricted,
            //     onWebViewCreated: (WebViewController webViewController) {
            //       _controller.complete(webViewController);
            //     },
            //     // TODO(iskakaushik): Remove this when collection literals makes it to stable.
            //     // ignore: prefer_collection_literals
            //     javascriptChannels: <JavascriptChannel>[
            //       _toasterJavascriptChannel(context),
            //     ].toSet(),
            //     navigationDelegate: (NavigationRequest request) {
            //       if (request.url.startsWith('https://www.youtube.com/')) {
            //         print('blocking navigation to $request}');
            //         return NavigationDecision.prevent;
            //       }
            //       print('allowing navigation to $request');
            //       return NavigationDecision.navigate;
            //     },
            //     onPageStarted: (String url) {
            //       print('Page started loading: $url');
            //     },
            //     onPageFinished: (String url) async {
            //       print('Page finished loading: $url');
            //       //  showDownloadProgress(context);
            //       final dir = await getExternalStorageDirectory();
            //       String savePath = dir.path + "/one_key";
            //       DioUtil().download(url, savePath,
            //           onProgress: (received, total) {
            //         // if (_progress != 100) {
            //         //   int progress = ((received / total) * 100).round();
            //         //   _progress = progress;
            //         //   _setState(() {});
            //         // }
            //         if (received == total) {
            //           print('object');
            //           //下载完成
            //           // InstallPlugin.installApk(savePath, "com.naji.one_key");
            //         }
            //       });
            //     },
            //     gestureNavigationEnabled: true,
            //   );
            // }),
            ));
  }

  // JavascriptChannel _toasterJavascriptChannel(BuildContext context) {
  //   return JavascriptChannel(
  //       name: 'Toaster',
  //       onMessageReceived: (JavascriptMessage message) {
  //         Scaffold.of(context).showSnackBar(
  //           SnackBar(content: Text(message.message)),
  //         );
  //       });
  // }
}

// class WebPage extends StatelessWidget {
//   final String title;
//   final String url;
//   final bool need;

//   const WebPage({Key key, this.title, this.url, this.need = false})
//       : super(key: key);
//   @override
//   Widget build(BuildContext context) {
//     final Completer<WebViewController> _controller =
//         Completer<WebViewController>();
//     return Scaffold(
//       appBar: SystemAppBar(title, onTap: () {
//         if (need) {
//           Utils.changeStatusColor(color: MyColours.color_199095);
//         }
//         Navigator.of(context).pop();
//       }),
//       body: WillPopScope(
//           onWillPop: () async {
//             if (need) {
//               Utils.changeStatusColor(color: MyColours.color_199095);
//             }
//             return true;
//           },
//           child: WebView(
//             initialUrl: "http://colorcun.com/privacy1.html",
//             javascriptMode: JavascriptMode.unrestricted,
//             onWebViewCreated: (WebViewController webViewController) {
//               // Loading.showLoading(context);
//               _controller.complete(webViewController);
//             },
//             javascriptChannels: <JavascriptChannel>[
//               _toasterJavascriptChannel(context),
//             ].toSet(),
//             navigationDelegate: (NavigationRequest request) {
//               if (request.url.startsWith('https://www.youtube.com/')) {
//                 return NavigationDecision.prevent;
//               }
//               return NavigationDecision.navigate;
//             },
//             onPageStarted: (String url) {},
//             onPageFinished: (String url) {
//               // Loading.hideLoading(context);
//             },
//             gestureNavigationEnabled: true,
//           )),
//     );
//   }

//   JavascriptChannel _toasterJavascriptChannel(BuildContext context) {
//     return JavascriptChannel(
//         name: 'Toaster',
//         onMessageReceived: (JavascriptMessage message) {
//           Scaffold.of(context).showSnackBar(
//             SnackBar(content: Text(message.message)),
//           );
//         });
//   }
// }