mohemm-flutter-app/lib/classes/voip_chat_call.dart

import 'dart:convert';

import 'package:firebase_messaging/firebase_messaging.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter_callkit_incoming/entities/entities.dart';
import 'package:flutter_callkit_incoming/flutter_callkit_incoming.dart';
import 'package:mohem_flutter_app/app_state/app_state.dart';
import 'package:mohem_flutter_app/classes/utils.dart';
import 'package:mohem_flutter_app/main.dart';
import 'package:mohem_flutter_app/models/chat/get_single_user_chat_list_model.dart';
import 'package:mohem_flutter_app/models/chat/get_user_login_token_model.dart' as ALM;

class ChatVoipCall {
  static final ChatVoipCall _instance = ChatVoipCall._internal();

  ChatVoipCall._internal();

  factory ChatVoipCall() => _instance;

  Future<void> showCallkitIncoming({required String uuid, required RemoteMessage data}) async {
    await ChatVoipCall().listenerEvent();
    SingleUserChatModel callerData = SingleUserChatModel.fromJson(jsonDecode(data.data["user_chat_history_response"]));
    ALM.Response autoLoginData = ALM.Response.fromJson(jsonDecode(data.data["user_token_response"]));
    var values = {
      "loginDetails": autoLoginData.toJson(),
      "callerDetails": callerData.toJson(),
    };
     CallKitParams params = CallKitParams(
       id: uuid,
       nameCaller: callerData.targetUserName,
       appName: 'Mohemm',
       handle: '',
       type: 0,
       duration: 25000,
       textAccept: 'Accept',
       textDecline: 'Decline',
       textMissedCall: 'Missed call',
       textCallback: 'Call back',
    extra: values,
       android: const AndroidParams(
         isCustomNotification: true,
         isShowLogo: true,
         isShowCallback: false,
         isShowMissedCallNotification: true,
         ringtonePath: 'system_ringtone_default',
         backgroundColor: '#0955fa',
         backgroundUrl: 'assets/test.png',
         actionColor: '#4CAF50',
       ),
       ios: IOSParams(
         iconName: 'Mohemm',
         handleType: '',
         supportsVideo: true,
         maximumCallGroups: 2,
         maximumCallsPerCallGroup: 1,
         audioSessionMode: 'default',
         audioSessionActive: true,
         audioSessionPreferredSampleRate: 38000.0,
         audioSessionPreferredIOBufferDuration: 0.005,
         supportsDTMF: true,
         supportsHolding: true,
         supportsGrouping: false,
         supportsUngrouping: false,
         ringtonePath: 'system_ringtone_default',
       ),
     );
     if (callerData.chatEventId == 3) {
       await Utils.saveStringFromPrefs("isIncomingCall", "true");
       await Utils.saveStringFromPrefs("inComingCallData",jsonEncode(values));
       await FlutterCallkitIncoming.showCallkitIncoming(params);
     }
  }

//Function(CallEvent) callback
  Future<void> listenerEvent() async {
    try {
      FlutterCallkitIncoming.onEvent.listen((event) async {
        switch (event!.event) {
          case Event.ACTION_CALL_INCOMING:
            // TODO: received an incoming call
            break;
          case Event.ACTION_CALL_START:
            // TODO: started an outgoing call
            // TODO: show screen calling in Flutter
            break;
          case Event.ACTION_CALL_ACCEPT:

            break;
          case Event.ACTION_CALL_DECLINE:
            Utils.saveStringFromPrefs("isIncomingCall", "false");
            Utils.saveStringFromPrefs("inComingCallData", "null");
            break;
          case Event.ACTION_CALL_ENDED:
            Utils.saveStringFromPrefs("isIncomingCall", "false");
            Utils.saveStringFromPrefs("inComingCallData", "null");

            // TODO: ended an incoming/outgoing call
            break;
          case Event.ACTION_CALL_TIMEOUT:
            Utils.saveStringFromPrefs("isIncomingCall", "false");
            Utils.saveStringFromPrefs("inComingCallData", "null");
            break;
          case Event.ACTION_CALL_CALLBACK:
            // TODO: only Android - click action `Call back` from missed call notification
            break;
          case Event.ACTION_CALL_TOGGLE_HOLD:
            // TODO: only iOS
            break;
          case Event.ACTION_CALL_TOGGLE_MUTE:
            // TODO: only iOS
            break;
          case Event.ACTION_CALL_TOGGLE_DMTF:
            // TODO: only iOS
            break;
          case Event.ACTION_CALL_TOGGLE_GROUP:
            // TODO: only iOS
            break;
          case Event.ACTION_CALL_TOGGLE_AUDIO_SESSION:
            // TODO: only iOS
            break;
          case Event.ACTION_DID_UPDATE_DEVICE_PUSH_TOKEN_VOIP:
            // TODO: only iOS
            break;
        }
      });
    } on Exception {}
  }
}