/*
 * Pixel Dungeon
 * Copyright (C) 2012-2015  Oleg Dolya
 *
 * Shattered Pixel Dungeon
 * Copyright (C) 2014-2016 Evan Debenham
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 */
package com.shatteredpixel.shatteredpixeldungeon.ui;

import com.shatteredpixel.shatteredpixeldungeon.Assets;
import com.shatteredpixel.shatteredpixeldungeon.Dungeon;
import com.shatteredpixel.shatteredpixeldungeon.effects.Speck;
import com.shatteredpixel.shatteredpixeldungeon.effects.particles.BloodParticle;
import com.shatteredpixel.shatteredpixeldungeon.scenes.GameScene;
import com.shatteredpixel.shatteredpixeldungeon.scenes.PixelScene;
import com.shatteredpixel.shatteredpixeldungeon.sprites.HeroSprite;
import com.shatteredpixel.shatteredpixeldungeon.windows.WndGame;
import com.shatteredpixel.shatteredpixeldungeon.windows.WndHero;
import com.shatteredpixel.shatteredpixeldungeon.windows.WndJournal;
import com.watabou.input.Touchscreen.Touch;
import com.watabou.noosa.BitmapText;
import com.watabou.noosa.Camera;
import com.watabou.noosa.Image;
import com.watabou.noosa.NinePatch;
import com.watabou.noosa.TouchArea;
import com.watabou.noosa.audio.Sample;
import com.watabou.noosa.particles.BitmaskEmitter;
import com.watabou.noosa.particles.Emitter;
import com.watabou.noosa.ui.Button;
import com.watabou.noosa.ui.Component;

public class StatusPane extends Component {

	private NinePatch bg;
	private Image avatar;
	private Emitter blood;

	private int lastTier = 0;

	private Image rawShielding;
	private Image shieldedHP;
	private Image hp;
	private Image exp;

	private BossHealthBar bossHP;

	private int lastLvl = -1;

	private BitmapText level;
	private BitmapText depth;

	private DangerIndicator danger;
	private BuffIndicator buffs;
	private Compass compass;

	private JournalButton btnJournal;
	private MenuButton btnMenu;

	@Override
	protected void createChildren() {

		bg = new NinePatch( Assets.STATUS, 85, 0, 45, 0 );
		add( bg );

		add( new TouchArea( 0, 1, 31, 31 ) {
			@Override
			protected void onClick( Touch touch ) {
				Image sprite = Dungeon.hero.sprite;
				if (!sprite.isVisible()) {
					Camera.main.focusOn( sprite );
				}
				GameScene.show( new WndHero() );
			}
		} );

		btnJournal = new JournalButton();
		add( btnJournal );

		btnMenu = new MenuButton();
		add( btnMenu );

		avatar = HeroSprite.avatar( Dungeon.hero.heroClass, lastTier );
		add( avatar );

		blood = new BitmaskEmitter( avatar );

		blood.pour( BloodParticle.FACTORY, 0.3f );
		blood.autoKill = false;
		blood.on = false;
		add( blood );

		compass = new Compass( Dungeon.level.exit );
		add( compass );

		rawShielding = new Image( Assets.SHLD_BAR );
		rawShielding.alpha(0.5f);
		add(rawShielding);

		shieldedHP = new Image( Assets.SHLD_BAR );
		add(shieldedHP);

		hp = new Image( Assets.HP_BAR );
		add( hp );

		exp = new Image( Assets.XP_BAR );
		add( exp );

		bossHP = new BossHealthBar();
		add( bossHP );

		level = new BitmapText( PixelScene.pixelFont);
		level.hardlight( 0xFFEBA4 );
		add( level );

		depth = new BitmapText( Integer.toString( Dungeon.depth ), PixelScene.pixelFont);
		depth.hardlight( 0xCACFC2 );
		depth.measure();
		add( depth );

		danger = new DangerIndicator();
		add( danger );

		buffs = new BuffIndicator( Dungeon.hero );
		add( buffs );
	}

	@Override
	protected void layout() {

		height = 32;

		bg.size( width, bg.height );

		avatar.x = bg.x + 15 - avatar.width / 2f;
		avatar.y = bg.y + 16 - avatar.height / 2f;
		PixelScene.align(avatar);

		compass.x = avatar.x + avatar.width / 2f - compass.origin.x;
		compass.y = avatar.y + avatar.height / 2f - compass.origin.y;
		PixelScene.align(compass);

		hp.x = shieldedHP.x = rawShielding.x = 30;
		hp.y = shieldedHP.y = rawShielding.y = 3;

		bossHP.setPos( 6 + (width - bossHP.width())/2, 20);

		depth.x = width - 35.5f - depth.width() / 2f;
		depth.y = 8f - depth.baseLine() / 2f;

		danger.setPos( width - danger.width(), 20 );

		buffs.setPos( 31, 9 );

		btnJournal.setPos( width - 42, 1 );

		btnMenu.setPos( width - btnMenu.width(), 1 );
	}

	@Override
	public void update() {
		super.update();

		float health = Dungeon.hero.HP;
		float shield = Dungeon.hero.SHLD;
		float max = Dungeon.hero.HT;

		if (!Dungeon.hero.isAlive()) {
			avatar.tint( 0x000000, 0.6f );
			blood.on = false;
		} else if ((health/max) < 0.25f) {
			avatar.tint( 0xcc0000, 0.4f );
			blood.on = true;
		} else {
			avatar.resetColor();
			blood.on = false;
		}

		hp.scale.x = Math.max( 0, (health-shield)/max);
		shieldedHP.scale.x = health/max;
		rawShielding.scale.x = shield/max;

		exp.scale.x = (width / exp.width) * Dungeon.hero.exp / Dungeon.hero.maxExp();

		if (Dungeon.hero.lvl != lastLvl) {

			if (lastLvl != -1) {
				Emitter emitter = (Emitter)recycle( Emitter.class );
				emitter.revive();
				emitter.pos( 27, 27 );
				emitter.burst( Speck.factory( Speck.STAR ), 12 );
			}

			lastLvl = Dungeon.hero.lvl;
			level.text( Integer.toString( lastLvl ) );
			level.measure();
			level.x = 27.5f - level.width() / 2f;
			level.y = 28.0f - level.baseLine() / 2f;
			PixelScene.align(level);
		}

		int tier = Dungeon.hero.tier();
		if (tier != lastTier) {
			lastTier = tier;
			avatar.copy( HeroSprite.avatar( Dungeon.hero.heroClass, tier ) );
		}
	}

	private static class JournalButton extends Button {

		private Image bg;
		//used to display key state to the player
		private Image icon;

		public JournalButton() {
			super();

			width = bg.width + 13; //includes the depth display to the left
			height = bg.height + 4;
		}

		@Override
		protected void createChildren() {
			super.createChildren();

			bg = new Image( Assets.MENU, 2, 2, 13, 11 );
			add( bg );

			icon = new Image( Assets.MENU, 31, 0, 11, 7);
			add( icon );
		}

		@Override
		protected void layout() {
			super.layout();

			bg.x = x + 13;
			bg.y = y + 2;

			icon.x = bg.x + (bg.width() - icon.width())/2f;
			icon.y = bg.y + (bg.height() - icon.height())/2f;
			PixelScene.align(icon);
		}

		@Override
		public void update() {
			super.update();
			updateKeyDisplay();
		}

		public void updateKeyDisplay() {
			boolean foundKeys = false;
			boolean blackKey = false;
			boolean specialKey = false;
			int ironKeys = 0;
			for (int i = 1; i <= Dungeon.depth; i++) {
				if (Dungeon.hero.belongings.ironKeys[i] > 0 || Dungeon.hero.belongings.specialKeys[i] > 0) {
					foundKeys = true;

					if (i < Dungeon.depth){
						blackKey = true;

					} else {
						if (Dungeon.hero.belongings.specialKeys[i] > 0){
							specialKey = true;
						}
						ironKeys = Dungeon.hero.belongings.ironKeys[i];
					}
				}
			}

			if (!foundKeys){
				icon.frame(31, 0, 11, 7);
			} else {
				int left = 46, top = 0, width = 0, height = 7;
				if (blackKey){
					left = 43;
					width += 3;
				}
				if (specialKey){
					top = 8;
					width += 3;
				}
				width += ironKeys*3;
				width = Math.min( width, 9);
				icon.frame(left, top, width, height);
			}
			layout();

		}

		@Override
		protected void onTouchDown() {
			bg.brightness( 1.5f );
			icon.brightness( 1.5f );
			Sample.INSTANCE.play( Assets.SND_CLICK );
		}

		@Override
		protected void onTouchUp() {
			bg.resetColor();
			icon.resetColor();
		}

		@Override
		protected void onClick() {
			GameScene.show( new WndJournal() );
		}

	}

	private static class MenuButton extends Button {

		private Image image;

		public MenuButton() {
			super();

			width = image.width + 4;
			height = image.height + 4;
		}

		@Override
		protected void createChildren() {
			super.createChildren();

			image = new Image( Assets.MENU, 17, 2, 12, 11 );
			add( image );
		}

		@Override
		protected void layout() {
			super.layout();

			image.x = x + 2;
			image.y = y + 2;
		}

		@Override
		protected void onTouchDown() {
			image.brightness( 1.5f );
			Sample.INSTANCE.play( Assets.SND_CLICK );
		}

		@Override
		protected void onTouchUp() {
			image.resetColor();
		}

		@Override
		protected void onClick() {
			GameScene.show( new WndGame() );
		}
	}
}