// Author: Gockner, Simon
// Created: 2021-04-07
// Copyright(c) 2021 SimonG. All Rights Reserved.

using System.Collections.Generic;
using System.Linq;
using Lib.Audio.Factories;
using Lib.Audio.Interfaces;
using Lib.Driver.Interfaces;
using Lib.Midi.Factories;
using Lib.Midi.Interfaces;
using Lib.Midi.Messages;
using Lib.Midi.Messages.Interfaces;

namespace Lib.Audio
{
    public class Device : IDevice
    {
        private readonly IDriver _driver;
        private readonly IMidiCommunication _midiCommunication;
        private readonly IChannelFactory _channelFactory;

        public Device(IDriver driver, IMidiCommunicationFactory midiCommunicationFactory, IChannelFactory channelFactory)
        {
            _driver = driver;
            _midiCommunication = midiCommunicationFactory.Create();
            _channelFactory = channelFactory;

            Channels = InitializeChannels();
            
            _midiCommunication.MessageReceived += OnMidiCommunicationMessageReceived;
            _midiCommunication.ErrorReceived += OnMidiCommunicationErrorReceived;
        }

        public List<IChannel> Channels { get; }
        
        public void StartCommunication()
        {
            _midiCommunication.Open();
            // _midiCommunication.Send(new PitchWheelChangeMessage(5000, 1, 600));
            _midiCommunication.Send(new ControlChangeMessage(0, 1, 127));
        }

        private List<IChannel> InitializeChannels() => _driver.Channels == null ? new List<IChannel>()
            : _driver.Channels.Select(c => _channelFactory.Create(_driver.Channels.IndexOf(c), c)).ToList();

        private void OnMidiCommunicationMessageReceived(object? sender, IMidiMessage message)
        {
            int i = 0;
            if (message is PitchWheelChangeMessage)
            {
                i = 1;
                _midiCommunication.Send(message);
            }
        }
        
        private void OnMidiCommunicationErrorReceived(object? sender, IMidiMessage message)
        {
            int i = 0;
        }
    }
}