using System;
using System.Collections.Generic;
using System.Text;

using Microsoft.DirectX;
using Microsoft.DirectX.DirectSound;

namespace SalsaModel.Sound
{
    class Sound1 : IDisposable, IScene
    {
        private Device dSound;

        private SecondaryBuffer snd_clave;
        private SecondaryBuffer snd_tom_hi;
        private SecondaryBuffer snd_tom_lo;
        private SecondaryBuffer snd_bass;
        private SecondaryBuffer snd_guiro;

        private Random _rand = new Random();

        private Timing _timing;

        readonly string soundDir = findSoundDir();

        private static string findSoundDir()
        {
            string assloc = System.Reflection.Assembly.GetExecutingAssembly().Location;
            string topdir = System.IO.Path.GetDirectoryName(assloc);
            topdir = System.IO.Path.GetDirectoryName(topdir);
            topdir = System.IO.Path.GetDirectoryName(topdir);
            return topdir + "/Sound";
        }

        public Sound1(System.Windows.Forms.Control form, Timing timing)
        {
            dSound = new Device();
            dSound.SetCooperativeLevel(form.Handle,
                           CooperativeLevel.Priority);

            // Create the sound
            snd_clave = new SecondaryBuffer(soundDir + "/Clave.wav", dSound);
            snd_tom_hi = new SecondaryBuffer(soundDir + "/congah.wav", dSound);
            snd_tom_lo = new SecondaryBuffer(soundDir + "/congal.wav", dSound);
            snd_bass = new SecondaryBuffer(soundDir + "/bass.wav", dSound);

            snd_guiro = new SecondaryBuffer(soundDir + "/CR-8000 Guiro.wav", dSound);

            snd_tom_hi.Volume = -8000;

            _timing = timing;
        }

        public void Dispose()
        {
        }

        public void Setup(Microsoft.DirectX.Direct3D.Device dev)
        {
        }

        int lastBeat = -11111;
        public void Draw()
        {
            int halfBeat = (_timing.Beat() - 1) * 2
                + (_timing.Percent() < 0.5 ? 0 : 1);

            if (lastBeat != halfBeat)
            {
                switch (halfBeat % 8)
                {
                    case 0:
                    case 4:
                        //snd_tom_lo.Play(0, BufferPlayFlags.Default);
                        break;
                    case 2:
                        //snd_tom_hi.Play(0, BufferPlayFlags.Default);
                        break;
                }

                // clave
                switch (halfBeat)
                {
                    case 2:
                    case 4:
                    case 8:
                    case 11:
                    case 14:
                        snd_clave.Play(0, BufferPlayFlags.Default);
                        break;
                }

                // tumbao
                switch (halfBeat)
                {
                    case 2:
                    case 10:
                        snd_tom_hi.Play(0, BufferPlayFlags.Default);

                        //snd_tom_lo.SetCurrentPosition(0);
                        //snd_tom_lo.Play(0, BufferPlayFlags.Default);
                        
                        break;
                    case 6:
                    case 7:
                    case 14:
                    case 15:
                        snd_tom_lo.SetCurrentPosition(0);
                        snd_tom_lo.Play(0, BufferPlayFlags.Default);
                        break;
                    default:
                        //snd_tom_lo.SetCurrentPosition(0);
                        //snd_tom_lo.Play(0, BufferPlayFlags.Default);
                        break;
                }

                if (halfBeat % 4 == 0)
                {
                    //snd_tom_lo.SetCurrentPosition(0);
                    //snd_tom_lo.Play(0, BufferPlayFlags.Default);
                }

                if (halfBeat == 0 && _rand.NextDouble() < 0.3)
                {
                    snd_guiro.Play(0, BufferPlayFlags.Default);
                }

                lastBeat = halfBeat;
            }
        }
    }
}