import 'package:flutter/material.dart';
import 'package:flutter_inappwebview/flutter_inappwebview.dart';
import 'package:hooks_riverpod/hooks_riverpod.dart';
import 'package:island/models/post.dart';
import 'package:material_symbols_icons/symbols.dart';
import 'package:url_launcher/url_launcher.dart';

class EmbedViewRenderer extends HookConsumerWidget {
  final SnPostEmbedView embedView;
  final double? maxHeight;
  final BorderRadius? borderRadius;

  const EmbedViewRenderer({
    super.key,
    required this.embedView,
    this.maxHeight = 400,
    this.borderRadius,
  });

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final theme = Theme.of(context);
    final colorScheme = theme.colorScheme;

    return Container(
      constraints: BoxConstraints(maxHeight: maxHeight ?? 400),
      decoration: BoxDecoration(
        borderRadius: borderRadius ?? BorderRadius.circular(12),
        border: Border.all(
          color: colorScheme.outline.withOpacity(0.3),
          width: 1,
        ),
        color: colorScheme.surfaceContainerLowest,
      ),
      child: ClipRRect(
        borderRadius: borderRadius ?? BorderRadius.circular(12),
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            // Header with embed info
            Container(
              padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
              decoration: BoxDecoration(
                color: colorScheme.surfaceContainerHigh,
                border: Border(
                  bottom: BorderSide(
                    color: colorScheme.outline.withOpacity(0.2),
                    width: 1,
                  ),
                ),
              ),
              child: Row(
                children: [
                  Icon(
                    embedView.renderer == PostEmbedViewRenderer.webView
                        ? Symbols.web
                        : Symbols.web,
                    size: 16,
                    color: colorScheme.primary,
                  ),
                  const SizedBox(width: 8),
                  Expanded(
                    child: Text(
                      _getUriDisplay(embedView.uri),
                      style: theme.textTheme.bodySmall?.copyWith(
                        color: colorScheme.onSurfaceVariant,
                      ),
                      maxLines: 1,
                      overflow: TextOverflow.ellipsis,
                    ),
                  ),
                  IconButton(
                    icon: Icon(
                      Symbols.open_in_new,
                      size: 16,
                      color: colorScheme.onSurfaceVariant,
                    ),
                    onPressed: () async {
                      final uri = Uri.parse(embedView.uri);
                      if (await canLaunchUrl(uri)) {
                        await launchUrl(
                          uri,
                          mode: LaunchMode.externalApplication,
                        );
                      }
                    },
                    padding: EdgeInsets.zero,
                    constraints: const BoxConstraints(),
                    visualDensity: VisualDensity.compact,
                    tooltip: 'Open in browser',
                  ),
                ],
              ),
            ),

            // WebView content
            AspectRatio(
              aspectRatio: embedView.aspectRatio ?? 1,
              child: InAppWebView(
                initialUrlRequest: URLRequest(url: WebUri(embedView.uri)),
                initialSettings: InAppWebViewSettings(
                  javaScriptEnabled: true,
                  mediaPlaybackRequiresUserGesture: false,
                  allowsInlineMediaPlayback: true,
                  useShouldOverrideUrlLoading: true,
                  useOnLoadResource: true,
                  supportZoom: false,
                  useWideViewPort: false,
                  loadWithOverviewMode: true,
                  builtInZoomControls: false,
                  displayZoomControls: false,
                  minimumFontSize: 12,
                  preferredContentMode: UserPreferredContentMode.RECOMMENDED,
                  allowsBackForwardNavigationGestures: false,
                  allowsLinkPreview: false,
                  isInspectable: false,
                ),
                onWebViewCreated: (controller) {
                  // Configure webview settings
                  controller.addJavaScriptHandler(
                    handlerName: 'onHeightChanged',
                    callback: (args) {
                      // Handle dynamic height changes if needed
                    },
                  );
                },
                onLoadStart: (controller, url) {
                  // Handle load start
                },
                onLoadStop: (controller, url) async {
                  // Inject CSS to improve mobile display and remove borders
                  await controller.evaluateJavascript(
                    source: '''
                    // Remove unwanted elements
                    var elements = document.querySelectorAll('nav, header, footer, .ads, .advertisement, .sidebar');
                    for (var i = 0; i < elements.length; i++) {
                      elements[i].style.display = 'none';
                    }
            
                    // Remove borders from embedded content (YouTube, Vimeo, etc.)
                    var iframes = document.querySelectorAll('iframe');
                    for (var i = 0; i < iframes.length; i++) {
                      iframes[i].style.border = 'none';
                      iframes[i].style.borderRadius = '0';
                    }
            
                    // Remove borders from video elements
                    var videos = document.querySelectorAll('video');
                    for (var i = 0; i < videos.length; i++) {
                      videos[i].style.border = 'none';
                      videos[i].style.borderRadius = '0';
                    }
            
                    // Remove borders from any element that might have them
                    var allElements = document.querySelectorAll('*');
                    for (var i = 0; i < allElements.length; i++) {
                      if (allElements[i].style.border) {
                        allElements[i].style.border = 'none';
                      }
                    }
            
                    // Improve readability
                    var body = document.body;
                    body.style.fontSize = '14px';
                    body.style.lineHeight = '1.4';
                    body.style.margin = '0';
                    body.style.padding = '0';
            
                    // Handle dynamic content
                    var observer = new MutationObserver(function(mutations) {
                      // Remove borders from newly added elements
                      var newIframes = document.querySelectorAll('iframe');
                      for (var i = 0; i < newIframes.length; i++) {
                        if (!newIframes[i].style.border || newIframes[i].style.border !== 'none') {
                          newIframes[i].style.border = 'none';
                          newIframes[i].style.borderRadius = '0';
                        }
                      }
                      var newVideos = document.querySelectorAll('video');
                      for (var i = 0; i < newVideos.length; i++) {
                        if (!newVideos[i].style.border || newVideos[i].style.border !== 'none') {
                          newVideos[i].style.border = 'none';
                          newVideos[i].style.borderRadius = '0';
                        }
                      }
                      window.flutter_inappwebview.callHandler('onHeightChanged', document.body.scrollHeight);
                    });
                    observer.observe(document.body, { childList: true, subtree: true });
                  ''',
                  );
                },
                onLoadError: (controller, url, code, message) {
                  // Handle load errors
                },
                onLoadHttpError: (controller, url, statusCode, description) {
                  // Handle HTTP errors
                },
                shouldOverrideUrlLoading: (controller, navigationAction) async {
                  final uri = navigationAction.request.url;
                  if (uri != null && uri.toString() != embedView.uri) {
                    // Open external links in browser
                    // You might want to use url_launcher here
                    return NavigationActionPolicy.CANCEL;
                  }
                  return NavigationActionPolicy.ALLOW;
                },
                onProgressChanged: (controller, progress) {
                  // Handle progress changes if needed
                },
                onConsoleMessage: (controller, consoleMessage) {
                  // Handle console messages for debugging
                  debugPrint('WebView Console: ${consoleMessage.message}');
                },
              ),
            ),
          ],
        ),
      ),
    );
  }

  String _getUriDisplay(String uri) {
    try {
      final parsedUri = Uri.parse(uri);
      return parsedUri.host.isNotEmpty ? parsedUri.host : uri;
    } catch (e) {
      return uri;
    }
  }
}