healthcare-frontend/lib/pages/index.dart

import 'package:agora_rtc_engine/rtc_engine.dart';
import 'package:flutter/material.dart';
import 'package:async/async.dart';
import 'dart:developer';
import 'package:permission_handler/permission_handler.dart';
import './call.dart';
import 'package:flutter/material.dart' hide Size;
import 'dart:ui' as ui;

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

  @override
  State<IndexPage> createState() => _IndexPageState();
}

class _IndexPageState extends State<IndexPage> {

  TextEditingController _channelController = TextEditingController(text: 'call');

  bool _validateError=false;
   ClientRole? _role= ClientRole.Broadcaster;


  @override
  void dispose() {
    _channelController.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text("VideoCall"),
        centerTitle: true,
      ),
      body: SingleChildScrollView(
        child: Container(
          padding: const EdgeInsets.symmetric(horizontal: 20),
          child: Column(
            children:<Widget> [
              const SizedBox(height: 20),
              const SizedBox(height: 20),
              TextField(
                controller: _channelController,
                decoration: InputDecoration(
                  errorText: _validateError ? 'Chanel Name is Mondatory' : null,
                  border: UnderlineInputBorder(borderSide: BorderSide(width: 1),),
                  hintText: 'channel name',
                ),
              ),
              RadioListTile(
                title: const Text('Broadcaster'),
                onChanged: (ClientRole? value)
                {
                  setState(() {
                    _role=value;
                  });
                },
                  value: ClientRole.Broadcaster,
                groupValue: _role,
              ),
              RadioListTile(
                title: const Text('Audience'),
                onChanged: (ClientRole? value)
                {
                  setState(() {
                    _role=value;
                  });
                },
                value: ClientRole.Audience,
                groupValue: _role,
              ),
              ElevatedButton(
                onPressed: onjoin,
                child: const Text('Join'),
                style: ElevatedButton.styleFrom(
                  minimumSize: const ui.Size(double.infinity, 40),
                ),
              )
            ],
          ),
        ),
      ),
    );
  }

  Future<void> onjoin() async {
    setState(() {
      _channelController.text.isEmpty
      ? _validateError=true:
      _validateError=false; // This line doesn't actually update any state
    });

    if(_channelController.text.isNotEmpty)
      {
        await _handlecameraAndMic(Permission.camera);
        await _handlecameraAndMic(Permission.microphone);
        await Navigator.push(
          context,
          MaterialPageRoute(
            builder: (__) => CallPage(
              channelName: _channelController.text, // Passes the text from _channelController as channelName
              role: _role, // Passes the value of _role as role
            ),
          ),
        );



      }
  }

  Future <void> _handlecameraAndMic(Permission permission) async
  {
    final status=await permission.request();
    log(status.toString());
  }
}