using System;
using System.Collections.Generic;
using System.IO;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Audio;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using Microsoft.Xna.Framework.Storage;
using Microsoft.Xna.Framework.Content;
using Util;
using tAC_Engine.Graphics.Entities;

namespace AuditoryStimuli
{
	public class AuditoryStimuli : GameScreen
	{
		private float SOUND_DELAY = 1f;
		private float lastTime = 0f;
		private float nextPlay;
		private float MAX_JITTER = .5f; 
		private int MAX_PLAYS = 100;

		private EntitySprite cross;
		private SpriteBatch msb;

		private Logger mLogger;

		private string mSound;


		private List<float> volumes = new List<float>();
		private List<int> toneCount = new List<int>();

		public override void Initialize()
		{
			base.Initialize();
			nextPlay = SOUND_DELAY + (float)Util.Random.NextDouble(0f, MAX_JITTER);
			try
			{
				mLogger = GetLogger();
				mLogger.Initialize();
				StreamReader input = File.OpenText(RootDirectory + @"\Config\AuditoryConfig.script");
				string inputLine;
				while (!input.EndOfStream)
				{
					inputLine = input.ReadLine();

					string[] args = inputLine.Split('=');
					if (args.Length == 2)
					{
						args[1] = args[1].Trim();
						switch (args[0].Trim())
						{
							case "AS_SOUND_DELAY":
								SOUND_DELAY = (float)Convert.ToDouble(args[1]);
								break;
							case "AS_MAX_JITTER":
								MAX_JITTER = (float)Convert.ToDouble(args[1]);
								break;
							case "AS_MAX_PLAYS":
								MAX_PLAYS = Convert.ToInt32(args[1]);
								break;
							case "AS_VOLUME1":
								volumes[0] = (float)Convert.ToDouble(args[1]);
								break;
							case "AS_VOLUME2":
								volumes[1] = (float)Convert.ToDouble(args[1]);
								break;
							case "AS_VOLUME3":
								volumes[2] = (float)Convert.ToDouble(args[1]);
								break;
							case "AS_VOLUME4":
								volumes[3] = (float)Convert.ToDouble(args[1]);
								break;
							case "AS_SOUND":
								mSound = args[1];
								break;
								
						}
					}
				}

				mLogger.Write((int)EventCode.Start, "AS_START");
			}
			catch (IOException e)
			{
				Console.WriteLine("Config File Error: Config File is Corrupt or not found");
			}
		}

		protected override void LoadContent()
		{
			base.LoadContent();

			for (int i = 0; i < 4; i++)
				volumes.Add(0);

			for (int i = 0; i < volumes.Count; i++)
				toneCount.Add(0);
           
			SoundManager.SoundManager.UnloadAudioProject();
			SoundManager.SoundManager.LoadAudioProject(Content.RootDirectory, @"AudioProject.xgs");

			GraphicsDevice.Clear(Color.Black);
			msb = new SpriteBatch(GraphicsDevice);
			cross = new EntitySprite(Content, "Cross");
			cross.Height = GraphicsDevice.DisplayMode.Height;
			cross.Width = GraphicsDevice.DisplayMode.Width;
			cross.Position = Vector2.Zero;
			cross.SpriteBatch = msb;

			AddComponent(cross);
		}

		protected override void UnloadContent()
		{
			base.UnloadContent();
			SoundManager.SoundManager.UnloadAudioProject();
		}

		public override void Update(GameTime gameTime)
		{
			base.Update(gameTime);
			SoundManager.SoundManager.Update();

			if (Keyboard.GetState().IsKeyDown(Keys.Escape))
			{
				mLogger.Write((int)EventCode.End, "AS_END");
				Done();
			}
			if (gameTime.TotalGameTime.TotalSeconds - lastTime >= nextPlay)
			{
				int volumeNumber = Util.Random.Next(volumes.Count);
				while (toneCount[volumeNumber] >= MAX_PLAYS)
				{
					volumeNumber = Util.Random.Next(volumes.Count);
				}
				SoundManager.SoundManager.EffectVolume = volumes[volumeNumber];
				SoundManager.SoundManager.PlayEffect(mSound);
				mLogger.Write((int)Enum.Parse(typeof(EventCode), "TonePlayed_" + (volumeNumber+1), true), "AS_TONE_PLAYED Volume=" + volumes[volumeNumber] + " Tone="+ (volumeNumber + 1));

				toneCount[volumeNumber]++;
				lastTime = (float)gameTime.TotalGameTime.TotalSeconds;
				nextPlay = SOUND_DELAY + (float)Util.Random.NextDouble(0f, MAX_JITTER);
				
				bool quit = true;
				foreach (int i in toneCount)
				{
					if (i < MAX_PLAYS)
						quit = false;
				}
				if (quit)
				{
					mLogger.Write((int)EventCode.End, "AS_END");
					Done();
				}
			}
		}
	}
}