import 'package:flutter/foundation.dart';
import 'package:flutter/gestures.dart';
import 'package:flutter/material.dart';
import 'package:flutter_inappwebview/flutter_inappwebview.dart';

import '../utils/constants.dart';
import '../utils/util.dart';

class WebViewPopup extends StatelessWidget {
  final CreateWindowAction createWindowAction;
  final InAppWebViewSettings popupWebViewSettings;

  const WebViewPopup(
      {Key? key,
      required this.createWindowAction,
      required this.popupWebViewSettings})
      : super(key: key);

  @override
  Widget build(BuildContext context) {
    return FutureBuilder<bool>(
        future: isNetworkAvailable(),
        builder: (context, snapshot) {
          if (!snapshot.hasData) {
            return Container();
          }

          final bool networkAvailable = snapshot.data ?? false;

          // Android-only
          final cacheMode = networkAvailable
              ? CacheMode.LOAD_DEFAULT
              : CacheMode.LOAD_CACHE_ELSE_NETWORK;

          final webViewInitialSettings = popupWebViewSettings.copy();
          webViewInitialSettings.cacheMode = cacheMode;

          return AlertDialog(
            content: SizedBox(
              width: double.maxFinite,
              child: Column(
                mainAxisSize: MainAxisSize.min,
                children: [
                  SizedBox(
                    height: 250,
                    child: InAppWebView(
                      gestureRecognizers: <Factory<
                          OneSequenceGestureRecognizer>>{
                        Factory<OneSequenceGestureRecognizer>(
                          () => EagerGestureRecognizer(),
                        ),
                      },
                      initialSettings: webViewInitialSettings,
                      windowId: createWindowAction.windowId,
                      onCloseWindow: (controller) {
                        Navigator.pop(context);
                      },
                      onReceivedError: (controller, request, error) async {
                        final isForMainFrame = request.isForMainFrame ?? true;
                        if (isForMainFrame && !(await isNetworkAvailable())) {
                          if (!(await isPWAInstalled())) {
                            await controller.loadData(
                                data: kHTMLErrorPageNotInstalled);
                          } else if (request.url.host != kPwaHost) {
                            await controller.loadData(data: kHTMLErrorPage);
                          }
                        }
                      },
                    ),
                  ),
                ],
              ),
            ),
          );
        });
  }
}