import 'dart:io';
import 'package:flutter/material.dart';
import 'package:webview_flutter/webview_flutter.dart';
import 'package:webview_flutter_android/webview_flutter_android.dart';
import 'package:flutter/services.dart' show rootBundle;

class ChatPage extends StatefulWidget {
  const ChatPage({Key? key}) : super(key: key);

  @override
  State<ChatPage> createState() => _ChatPageState();
}

class _ChatPageState extends State<ChatPage> {
  late final WebViewController _controller;

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

    if (Platform.isAndroid) {
      WebViewPlatform.instance = AndroidWebViewPlatform();
    }

    _controller = WebViewController()
      ..setJavaScriptMode(JavaScriptMode.unrestricted)
      ..setNavigationDelegate(
        NavigationDelegate(onPageFinished: (url) {
          _controller.runJavaScript(
              "if(typeof botmanChatWidget !== 'undefined') botmanChatWidget.open();");
        }),
      );

    _loadBotmanHtml();
  }

  Future<void> _loadBotmanHtml() async {
    final htmlContent = await rootBundle.loadString('assets/botman_chat.html');
    _controller.loadHtmlString(htmlContent);
  }

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