import 'package:flutter/material.dart';
import 'package:webview_flutter/webview_flutter.dart';
import 'package:url_launcher/url_launcher.dart';

class ChatbotWebViewPage extends StatefulWidget {
  final String client_branch_id;
  final String empCodeString;
  final String empName;
  final String empPrimaryId;
  final String client_id;

  const ChatbotWebViewPage({
    Key? key,
    required this.client_branch_id,
    required this.empCodeString,
    required this.empName,
    required this.empPrimaryId,
    required this.client_id,
  }) : super(key: key);

  @override
  State<ChatbotWebViewPage> createState() => _ChatbotWebViewPageState();
}

class _ChatbotWebViewPageState extends State<ChatbotWebViewPage> {
  late final WebViewController _controller;

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

    final url = Uri.parse(
      'https://venbait.in/nhance/dev/chatbot'
          '?employee_id=${widget.empPrimaryId}'
          '&emp_code=${widget.empCodeString}'
          '&origin=mob'
          '&name=${widget.empName}'
          '&client_id=${widget.client_id}'
          '&client_branch_id=${widget.client_branch_id}',
    );

    _controller = WebViewController()
      ..setJavaScriptMode(JavaScriptMode.unrestricted)
      ..setBackgroundColor(Colors.transparent)
      ..setNavigationDelegate(
        NavigationDelegate(
          onNavigationRequest: (NavigationRequest request) {
            debugPrint("Clicked URL: ${request.url}");
            _launchInExternalBrowser(Uri.parse(request.url));
            return NavigationDecision.prevent; // prevent WebView navigation
          },
          onWebResourceError: (error) {
            debugPrint("WebView error: ${error.description}");
          },
        ),
      )
      ..loadRequest(url);
  }

  /// Launch URL in external browser (Chrome or default)
  Future<void> _launchInExternalBrowser(Uri url) async {
    if (await canLaunchUrl(url)) {
      await launchUrl(url, mode: LaunchMode.externalApplication);
    } else {
      debugPrint("Could not launch $url");
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('Ask ILA')),
      body: WebViewWidget(controller: _controller),
    );
  }
}