import 'dart:async';
import 'dart:io';
import 'package:flutter/cupertino.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter_downloader/flutter_downloader.dart';

import 'package:flutter_inappwebview/flutter_inappwebview.dart';
import 'package:flutter_download_manager/flutter_download_manager.dart';
import 'package:generp/Utils/app_colors.dart';
import 'package:generp/Utils/commonWidgets.dart';
import 'package:generp/screens/WebERPScreen.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:url_launcher/url_launcher.dart';

const MAX_PROGRESS = 100;

Future main() async {
  await FlutterDownloader.initialize(
    debug: true, // optional: set false to disable printing logs to console
  );
  await Permission.storage.request();
}

class WebERPIOS extends StatefulWidget {
  final String url;
  const WebERPIOS({Key? key, required this.url}) : super(key: key);

  @override
  State<WebERPIOS> createState() => _WebERPIOSState();
}

class _WebERPIOSState extends State<WebERPIOS> {
  final Completer<InAppWebViewController> _controller =
      Completer<InAppWebViewController>();
  var empId = "";
  var sessionId = "";
  bool isLoading = true;
  InAppWebViewController? webViewController;
  PullToRefreshController? pullToRefreshController;
  PullToRefreshSettings pullToRefreshSettings = PullToRefreshSettings(
    color: AppColors.app_blue,
  );
  bool pullToRefreshEnabled = true;

  final GlobalKey webViewKey = GlobalKey();
  var dl = DownloadManager();
  @override
  void initState() {
    //  loadData();

    pullToRefreshController =
        kIsWeb
            ? null
            : PullToRefreshController(
              settings: pullToRefreshSettings,
              onRefresh: () async {
                if (defaultTargetPlatform == Platform.isAndroid) {
                  webViewController?.reload();
                } else if (defaultTargetPlatform == Platform.isIOS) {
                  webViewController?.loadUrl(
                    urlRequest: URLRequest(
                      url: await webViewController?.getUrl(),
                    ),
                  );
                }
              },
            );
    print("WebURL:${widget.url}");
    super.initState();
  }

  @override
  void dispose() {
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return WillPopScope(
      onWillPop: () async {
        if (await webViewController!.canGoBack()) {
          webViewController!.goBack();
          return false; // Prevent default back button behavior
        }
        return true; // Allow default back button behavior
      },
      child: Scaffold(
        appBar: appbar(context, "Web ERP"),
        body: SafeArea(
          child: Container(
            child: Column(
              children: <Widget>[
                Expanded(
                  child: Stack(
                    children: [
                      InAppWebView(
                        initialUrlRequest: URLRequest(
                          url: WebUri(widget.url.toString()),
                        ),
                        androidOnGeolocationPermissionsShowPrompt: (
                          InAppWebViewController controller,
                          String origin,
                        ) async {
                          return GeolocationPermissionShowPromptResponse(
                            origin: origin,
                            allow: true,
                            retain: true,
                          );
                        },
                        initialOptions: InAppWebViewGroupOptions(
                          android: AndroidInAppWebViewOptions(
                            useWideViewPort: true,
                            loadWithOverviewMode: true,
                            allowContentAccess: true,
                            geolocationEnabled: true,
                            allowFileAccess: true,
                            databaseEnabled: true, // Enables the WebView database
                            domStorageEnabled: true, // Enables DOM storage
                            builtInZoomControls:
                                true, // Enables the built-in zoom controls
                            displayZoomControls:
                                false, // Disables displaying zoom controls
                            safeBrowsingEnabled: true, // Enables Safe Browsing
                          ),
                          ios: IOSInAppWebViewOptions(
                            allowsInlineMediaPlayback: true,
                            allowsLinkPreview: true,
                            allowsBackForwardNavigationGestures: true,
                          ),
                        ),
          
                        androidOnPermissionRequest: (
                          InAppWebViewController controller,
                          String origin,
                          List<String> resources,
                        ) async {
                          return PermissionRequestResponse(
                            resources: resources,
                            action: PermissionRequestResponseAction.GRANT,
                          );
                        },
                        initialSettings: InAppWebViewSettings(
                          javaScriptEnabled: true,
                          allowFileAccess: true,
                          allowContentAccess: true,
                          clearCache: true,
                          blockNetworkLoads: false,
                          networkAvailable: true,
                          useOnLoadResource: true,
                          thirdPartyCookiesEnabled: true,
                          supportZoom: false,
                          geolocationEnabled: true,
                          safeBrowsingEnabled: false,
                          saveFormData: true,
                          allowFileAccessFromFileURLs: true,
                          useWideViewPort: true,
                          databaseEnabled: true,
                          domStorageEnabled: true,
                          allowsBackForwardNavigationGestures: true,
                          allowUniversalAccessFromFileURLs: true,
                          allowsLinkPreview: true,
                        ),
                        onPermissionRequest: (controller, request) async {
                          return PermissionResponse(
                            resources: request.resources,
                            action: PermissionResponseAction.GRANT,
                          );
                        },
                        keepAlive: InAppWebViewKeepAlive(),
                        // initialData:
                        //     InAppWebViewInitialData(baseUrl: WebUri(widget.url),data: ),
                        onWebViewCreated: (controller) {
                          webViewController = controller;
                          _controller.complete(controller);
                        },
                        pullToRefreshController: pullToRefreshController,
                        shouldOverrideUrlLoading: (
                          controller,
                          navigationAction,
                        ) async {
                          var uri = navigationAction.request.url!;
                          print("urib scgefes");
                          print(uri);
                          print(uri.scheme);
                          if (uri.scheme == "tel") {
                            // Launch the phone dialer app with the specified phone number
                            if (await canLaunch(uri.toString())) {
                              await launch(uri.toString());
                              return NavigationActionPolicy.CANCEL;
                            }
                          } else if (uri.scheme == "mailto") {
                            if (await canLaunch(uri.toString())) {
                              await launch(uri.toString());
                              return NavigationActionPolicy.CANCEL;
                            }
                          } else if (uri.scheme == "whatsapp") {
                            // Launch WhatsApp with the specified chat or phone number
                            if (await canLaunch(uri.toString())) {
                              await launch(uri.toString());
                              return NavigationActionPolicy.CANCEL;
                            }
                          }
                          // // Check if the URL is trying to access the camera for image upload
                          // if (uri.scheme == 'camera' && uri.path.contains('/camera/')) {
                          //   // Handle camera image upload here
                          //   // You might want to display a custom UI for image selection or directly trigger the camera
                          //   // You can use platform-specific plugins like image_picker for this purpose
                          //   // Once the image is selected, you can pass it to the web view using JavaScript injection
                          //   if (await canLaunch(uri.toString())) {
                          //     await launch(uri.toString());
                          //     return NavigationActionPolicy.CANCEL;
                          //   }
                          // }
                          return NavigationActionPolicy.ALLOW;
                        },
          
                        onLoadStart: (controller, url) {
                          return setState(() {
                            isLoading = true;
                          });
                        },
                        onLoadStop: (controller, url) {
                          pullToRefreshController?.endRefreshing();
                          return setState(() {
                            isLoading = false;
                          });
                        },
                        onReceivedError: (controller, request, error) {
                          pullToRefreshController?.endRefreshing();
                        },
                        onProgressChanged: (controller, progress) {
                          if (progress == 100) {
                            pullToRefreshController?.endRefreshing();
                          }
                        },
                      ),
                      if (isLoading) ...[
                        Container(
                          color: Colors.white.withOpacity(0.7),
                          child: Column(
                            crossAxisAlignment: CrossAxisAlignment.center,
                            mainAxisAlignment: MainAxisAlignment.center,
                            children: [
                              SpinKitRing(
                                color: AppColors.app_blue,
                                lineWidth: 4,
                                // duration: Duration(seconds: 2),
                                size: 50,
                              ),
                              const SizedBox(height: 15),
                              SizedBox(
                                width: 200,
                                child: Text(
                                  "Please wait.......",
                                  textAlign: TextAlign.center,
                                  style: TextStyle(
                                    decorationThickness: 0,
                                    fontSize: 15,
                                    fontWeight: FontWeight.normal,
                                    color: AppColors.app_blue,
                                  ),
                                ),
                              ),
          
                              // SvgPicture.asset("/assets/images/NutsLoader.gif")
                            ],
                          ),
                        ),
                      ],
                    ],
                  ),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }
}