package funkin.game;

import flixel.FlxSprite;
import flixel.graphics.frames.FlxAtlasFrames;
import flixel.math.FlxMath;
import flixel.util.FlxColor;
import flixel.math.FlxRect;
import funkin.system.Conductor;
#if polymod
import polymod.format.ParseRules.TargetSignatureElement;
#end

using StringTools;

class Note extends FlxSprite
{
	public var strumTime:Float = 0;

	public var mustPress:Bool = false;
	public var noteData:Int = 0;
	public var canBeHit:Bool = false;
	public var tooLate:Bool = false;
	public var wasGoodHit:Bool = false;
	public var prevNote:Note;

	public var strumID(get, never):Int;
	private function get_strumID() {
		var id = noteData % 4;
		if (id < 0) id = 0;
		return id;
	}

	public var sustainLength:Float = 0;
	public var isSustainNote:Bool = false;

	public var noteScore:Float = 1;

	public static var swagWidth:Float = 160 * 0.7;

	public function new(strumTime:Float, noteData:Int, ?prevNote:Note, ?sustainNote:Bool = false)
	{
		super();

		if (prevNote == null)
			prevNote = this;

		this.prevNote = prevNote;
		isSustainNote = sustainNote;

		x += 50;
		// MAKE SURE ITS DEFINITELY OFF SCREEN?
		y -= 2000;
		this.strumTime = strumTime;

		this.noteData = noteData;

		var daStage:String = PlayState.instance.curStage;

		switch (daStage)
		{
			case 'school' | 'schoolEvil':
				loadGraphic(Paths.image('weeb/pixelUI/arrows-pixels'), true, 17, 17);

				animation.add('greenScroll', [6]);
				animation.add('redScroll', [7]);
				animation.add('blueScroll', [5]);
				animation.add('purpleScroll', [4]);

				if (isSustainNote)
				{
					loadGraphic(Paths.image('weeb/pixelUI/arrowEnds'), true, 7, 6);

					animation.add('purpleholdend', [4]);
					animation.add('greenholdend', [6]);
					animation.add('redholdend', [7]);
					animation.add('blueholdend', [5]);

					animation.add('purplehold', [0]);
					animation.add('greenhold', [2]);
					animation.add('redhold', [3]);
					animation.add('bluehold', [1]);
				}

				setGraphicSize(Std.int(width * PlayState.daPixelZoom));
				updateHitbox();

			default:
				frames = Paths.getSparrowAtlas('NOTE_assets');

				animation.addByPrefix('greenScroll', 'green0');
				animation.addByPrefix('redScroll', 'red0');
				animation.addByPrefix('blueScroll', 'blue0');
				animation.addByPrefix('purpleScroll', 'purple0');

				animation.addByPrefix('purpleholdend', 'pruple end hold');
				animation.addByPrefix('greenholdend', 'green hold end');
				animation.addByPrefix('redholdend', 'red hold end');
				animation.addByPrefix('blueholdend', 'blue hold end');

				animation.addByPrefix('purplehold', 'purple hold piece');
				animation.addByPrefix('greenhold', 'green hold piece');
				animation.addByPrefix('redhold', 'red hold piece');
				animation.addByPrefix('bluehold', 'blue hold piece');

				setGraphicSize(Std.int(width * 0.7));
				updateHitbox();
				antialiasing = true;
		}

		switch (noteData)
		{
			case 0:
				x += swagWidth * 0;
				animation.play('purpleScroll');
			case 1:
				x += swagWidth * 1;
				animation.play('blueScroll');
			case 2:
				x += swagWidth * 2;
				animation.play('greenScroll');
			case 3:
				x += swagWidth * 3;
				animation.play('redScroll');
		}

		// trace(prevNote);

		if (isSustainNote && prevNote != null)
		{
			noteScore * 0.2;
			alpha = 0.6;

			x += width / 2;

			switch (noteData)
			{
				case 2:
					animation.play('greenholdend');
				case 3:
					animation.play('redholdend');
				case 1:
					animation.play('blueholdend');
				case 0:
					animation.play('purpleholdend');
			}

			updateHitbox();

			x -= width / 2;

			if (PlayState.instance.curStage.startsWith('school'))
				x += 30;

			if (prevNote.isSustainNote)
			{
				switch (prevNote.noteData)
				{
					case 0:
						prevNote.animation.play('purplehold');
					case 1:
						prevNote.animation.play('bluehold');
					case 2:
						prevNote.animation.play('greenhold');
					case 3:
						prevNote.animation.play('redhold');
				}

				prevNote.scale.y *= Conductor.stepCrochet / 100 * 1.5 * PlayState.instance.scrollSpeed;
				prevNote.updateHitbox();
				// prevNote.setGraphicSize();
			}
		}
	}

	override function update(elapsed:Float)
	{
		super.update(elapsed);

		if (mustPress)
		{
			// The * 0.5 is so that it's easier to hit them too late, instead of too early
			if (strumTime > Conductor.songPosition - Conductor.safeZoneOffset
				&& strumTime < Conductor.songPosition + (Conductor.safeZoneOffset * 0.5))
				canBeHit = true;
			else
				canBeHit = false;

			if (strumTime < Conductor.songPosition - Conductor.safeZoneOffset && !wasGoodHit)
				tooLate = true;
		}
		else
			canBeHit = false;
		

		if (tooLate)
		{
			if (alpha > 0.3)
				alpha = 0.3;
		}
	}

	public function updateClipRect(strum:Strum) {
		var t = FlxMath.bound((Conductor.songPosition - strumTime) / (height / (0.45 * FlxMath.roundDecimal(strum.getScrollSpeed(), 2))), 0, 1);
		var swagRect = new FlxRect(0, t * frameHeight, frameWidth, frameHeight);

		setClipRect(swagRect);
	}

	public function setClipRect(rect:FlxRect) {
		// TODO: Shader ClipRect like in Yoshi Engine for smoother sustains
		this.clipRect = rect;
	}
}