// ignore_for_file: library_private_types_in_public_api, deprecated_member_use, avoid_print

import 'package:didvan/constants/assets.dart';
import 'package:didvan/services/auth/token_storage.dart';
import 'package:didvan/views/widgets/didvan/text.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/gestures.dart';
import 'package:flutter/material.dart';
import 'package:webview_flutter/webview_flutter.dart';

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

  @override
  _WebViewState createState() => _WebViewState();
}

class _WebViewState extends State<WebView> {
  late WebViewController controller;
  bool loading = true;
  int progress = 0;

  final Set<Factory<VerticalDragGestureRecognizer>> gestureRecognizers = {
    Factory<VerticalDragGestureRecognizer>(
        () => VerticalDragGestureRecognizer())
  };

  void _onProgress(int progress) {
    print('🌐 WebView loading progress: $progress%'); // Add logging
    setState(() {
      this.progress = progress;
    });
  }

  void _onPageFinished(String url) async {
    print('✅ WebView finished loading: $url'); // Add logging
    await Future.delayed(const Duration(seconds: 2));
    setState(() {
      if (progress == 100) loading = false;
    });
  }

  /// قبل از باز کردنِ URL، توکنِ Keycloak را به‌صورتِ کوکی روی دامنه
  /// `.didvan.com` ست می‌کنیم تا سایت‌های پنل (مثل `app.didvan.com`) کاربر
  /// را همان لحظه لاگین‌شده ببینند و لاگین مجدد نخواهد.
  Future<void> _injectAuthCookies() async {
    final access = TokenStorage.accessToken;
    final refresh = TokenStorage.refreshToken;
    if (access == null || access.isEmpty) return;
    final cookieManager = WebViewCookieManager();
    Future<void> setCookie(String name, String value, String domain) async {
      try {
        await cookieManager.setCookie(WebViewCookie(
          name: name,
          value: value,
          domain: domain,
          path: '/',
        ));
      } catch (e) {
        print('⚠️ failed to set cookie $name on $domain: $e');
      }
    }

    // برای پوششِ همه‌ی ساب‌دامین‌ها، روی هم `.didvan.com` و دامنه‌ی
    // مقصد را ست می‌کنیم.
    final host = Uri.tryParse(widget.src)?.host ?? '';
    await setCookie('access_token', access, '.didvan.com');
    if (host.isNotEmpty) {
      await setCookie('access_token', access, host);
    }
    if (refresh != null && refresh.isNotEmpty) {
      await setCookie('refresh_token', refresh, '.didvan.com');
      if (host.isNotEmpty) {
        await setCookie('refresh_token', refresh, host);
      }
    }
  }

  @override
  void initState() {
    print('🔄 Initializing WebView with URL: ${widget.src}'); // Add logging
    controller = WebViewController()
      ..setJavaScriptMode(JavaScriptMode.unrestricted)
      ..setNavigationDelegate(
        NavigationDelegate(
          onProgress: _onProgress,
          onPageStarted: (String url) {
            print('▶️ WebView started loading: $url'); // Add logging
          },
          onPageFinished: _onPageFinished,
          onHttpError: (HttpResponseError error) {
            // print('❌ WebView HTTP error: ${error.statusCode} on ${error.url}'); // Add logging
          },
          onWebResourceError: (WebResourceError error) {
            // print('❌ WebView resource error: ${error.description} on ${error.failingUrl}'); // Add logging
          },
          onNavigationRequest: (NavigationRequest request) {
            print('🔀 WebView navigation request to: ${request.url}'); // Add logging
            return NavigationDecision.navigate;
          },
        ),
      );

    // ابتدا کوکی‌های احراز هویت را تزریق می‌کنیم، سپس URL را لود می‌کنیم.
    _injectAuthCookies().whenComplete(() {
      controller.loadRequest(Uri.parse(widget.src));
    });
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return WillPopScope(
        onWillPop: () async {
          if (await controller.canGoBack()) {
            await controller.goBack();
            return false;
          } else {
            return true;
          }
        },
        child: Scaffold(
          resizeToAvoidBottomInset: true,
          appBar: AppBar(
            title: const DidvanText(
              'بازگشت',
            ),
            leading: const BackButton(),
          ),
          body: loading
              ? Center(
                  child: Image.asset(
                    Assets.loadingAnimation,
                    width: 60,
                    height: 60,
                  ),
                )
              : LayoutBuilder(builder: (context, constraints) {
                  return SizedBox(
                    width: MediaQuery.sizeOf(context).width,
                    height: MediaQuery.sizeOf(context).height,
                    child: WebViewWidget(
                      controller: controller,
                      gestureRecognizers: gestureRecognizers,
                    ),
                  );
                }),
        ));
  }
}