using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using Microsoft.Xna.Framework.Audio;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
using System.IO;
using System;

namespace Asteroids;

public static class AudioEn
{
    public static float MasterVolume;
    public static Sound[] Sounds;
    private static List<SoundEffectInstance> SoundInits = new List<SoundEffectInstance>();
    private static string[] music;
    public static int cursong;
    public static SoundEffectInstance muse;
    public static SoundEffect nexmuse;
    public static TimeSpan songtime;
    public static TimeSpan playedtime;
    private static KeyboardState old;
    private static Game gam;
    public static void Initialize(Game Gam)
    {
        gam = Gam;
        music = Directory.GetFiles("Content/Music");
        for(int i = 0; i< music.Length; i++)
        {
            music[i] = music[i].Remove(0, 8);
            music[i] = music[i].Remove(music[i].Length-4, 4);
        }
        SoundEffect se = gam.Content.Load<SoundEffect>(music[cursong]);
        muse = se.CreateInstance();
        songtime = se.Duration;
        muse.Play();
        cursong++;
        
        loadnex();
    }
    public static void playsound(int sound)
    {
        SoundInits.Add(Sounds[sound].effect.CreateInstance());
        SoundInits[SoundInits.Count-1].Volume = Sounds[sound].volume * MasterVolume;
        SoundInits[SoundInits.Count-1].Play();
    }
    public static void Update(GameTime gameTime)
    {
        musein();
        SoundInits.RemoveAll(pred);
        muse.Volume = Sounds[1].volume * MasterVolume;
        if(muse.State == SoundState.Stopped)
        {
            playedtime = new TimeSpan();
            muse = nexmuse.CreateInstance();
            songtime = nexmuse.Duration;
            loadnex();
            muse.Play();
            cursong++;
        }
        if(cursong == music.Length)
        {
            cursong = 0;
        }
        playedtime += gameTime.ElapsedGameTime;
    }
    private static void musein()
    {
        KeyboardState KEY = Keyboard.GetState();
        if(KEY.IsKeyDown(Keys.Right) && !old.IsKeyDown(Keys.Right))
        {
            muse.Stop();
        }
        old = KEY;
    }
    private static void loadnex()
    {
        Task taskA = Task.Run( () => sus());
    }
    private static void sus()
    {
        nexmuse = gam.Content.Load<SoundEffect>(music[cursong]);
    }
    private static bool pred(SoundEffectInstance sei)
    {
        if(sei.State == SoundState.Playing)
        {
            return false;
        }
        return true;
    }
}
public class Sound
{
    public SoundEffect effect;
    public float volume;
    public string name;
    public bool show;
    public Sound(SoundEffect effect, float volume, string name, bool show)
    {
        this.effect = effect;
        this.volume = volume;
        this.name = name;
        this.show = show;
    }
}