Essentials/essentials-framework/Essentials Devices Common/Essentials Devices Common/VideoCodec/Interfaces/IHasParticipants.cs

using System;
using System.Collections.Generic;
using PepperDash.Essentials.Core;

namespace PepperDash.Essentials.Devices.Common.VideoCodec.Interfaces
{
    /// <summary>
    /// Describes a device that has call participants
    /// </summary>
    public interface IHasParticipants
    {
        CodecParticipants Participants { get; }
    }

    /// <summary>
    /// Describes the ability to mute and unmute a participant's video in a meeting
    /// </summary>
    public interface IHasParticipantVideoMute:IHasParticipants
    {
        void MuteVideoForParticipant(int userId);
        void UnmuteVideoForParticipant(int userId);
        void ToggleVideoForParticipant(int userId);
    }

    /// <summary>
    /// Describes the ability to mute and unmute a participant's audio in a meeting
    /// </summary>
    public interface IHasParticipantAudioMute : IHasParticipantVideoMute
    {
        void MuteAudioForParticipant(int userId);
        void UnmuteAudioForParticipant(int userId);
        void ToggleAudioForParticipant(int userId);
    }

    /// <summary>
    /// Describes the ability to pin and unpin a participant in a meeting
    /// </summary>
    public interface IHasParticipantPinUnpin : IHasParticipants
    {
        IntFeedback NumberOfScreensFeedback { get; }
        int ScreenIndexToPinUserTo { get; }

        void PinParticipant(int userId, int screenIndex);
        void UnPinParticipant(int userId);
        void ToggleParticipantPinState(int userId, int screenIndex);
    }

    public class CodecParticipants
    {
        private List<Participant> _currentParticipants;
 
        public List<Participant> CurrentParticipants {
            get { return _currentParticipants; }
            set
            {
                _currentParticipants = value;
                OnParticipantsChanged();
            }
        }

        public event EventHandler<EventArgs> ParticipantsListHasChanged;

        public CodecParticipants()
        {
            _currentParticipants = new List<Participant>();
        }

        public void OnParticipantsChanged()
        {
            var handler = ParticipantsListHasChanged;

            if (handler == null) return;

            handler(this, new EventArgs());
        }
    }

    /// <summary>
    /// Represents a call participant
    /// </summary>
    public class Participant
    {
        public int UserId { get; set; }
        public bool IsHost { get; set; }
        public string Name { get; set; }
        public bool CanMuteVideo { get; set; }       
        public bool CanUnmuteVideo { get; set; }
        public bool VideoMuteFb { get; set; }
        public bool AudioMuteFb { get; set; }
        public bool HandIsRaisedFb { get; set; }
        public bool IsPinnedFb { get; set; }
        public int ScreenIndexIsPinnedToFb { get; set; }

        public Participant()
        {
            // Initialize to -1 (no screen)
            ScreenIndexIsPinnedToFb = -1;
        }
    }
}