import 'package:agora_rtc_engine/agora_rtc_engine.dart';
import 'package:flutter/material.dart';
import 'package:permission_handler/permission_handler.dart';
import '../Provider/public_keys_provider.dart';

class AgoraService {

  static RtcEngine? _engine;
  static bool _isInitialized = false;

  static Future<void> initialize() async {
    if (_isInitialized) return;

    if (!publickeys.guardKey(publickeys.agoraAppId, 'agoraAppId')) {
      debugPrint('[AgoraService] Agora App ID not configured — skipping init');
      return;
    }

    await _requestPermissions();

    _engine = createAgoraRtcEngine();
    await _engine!.initialize(RtcEngineContext(
      appId: publickeys.agoraAppId!,
      channelProfile: ChannelProfileType.channelProfileCommunication,
    ));

    await _engine!.enableVideo();
    await _engine!.enableAudio();

    _isInitialized = true;
  }

  static Future<void> _requestPermissions() async {
    await [
      Permission.camera,
      Permission.microphone,
    ].request();
  }

  static RtcEngine? get engine => _engine;
  static bool get isInitialized => _isInitialized;

  static Future<void> dispose() async {
    await _engine?.leaveChannel();
    await _engine?.release();
    _engine = null;
    _isInitialized = false;
  }
}