/*
 * This file is part of Applied Energistics 2.
 * Copyright (c) 2013 - 2014, AlgorithmX2, All rights reserved.
 *
 * Applied Energistics 2 is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Applied Energistics 2 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Applied Energistics 2.  If not, see <http://www.gnu.org/licenses/lgpl>.
 */

package appeng.client.gui.widgets;


import appeng.api.config.*;
import appeng.core.localization.ButtonToolTips;
import appeng.util.EnumCycler;
import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.widget.button.Button;
import net.minecraft.util.text.ITextComponent;

import java.util.EnumSet;
import java.util.HashMap;
import java.util.Map;
import java.util.function.Predicate;
import java.util.regex.Pattern;


public class GuiSettingToggleButton<T extends Enum<T>> extends GuiIconButton
{
	private static final Pattern COMPILE = Pattern.compile( "%s" );
	private static final Pattern PATTERN_NEW_LINE = Pattern.compile( "\\n", Pattern.LITERAL );
	private static Map<EnumPair, ButtonAppearance> appearances;
	private final Settings buttonSetting;
	private final IHandler<GuiSettingToggleButton<T>> onPress;
	private final EnumSet<T> validValues;
	private String fillVar;
	private T currentValue;

	@FunctionalInterface
	public interface IHandler<T extends GuiSettingToggleButton<?>> {
		void handle(T button, boolean backwards);
	}

	public GuiSettingToggleButton(final int x, final int y, final Settings setting, final T val, IHandler<GuiSettingToggleButton<T>> onPress )
	{
		this(x, y, setting, val, t -> true, onPress);
	}

	public GuiSettingToggleButton(final int x, final int y, final Settings setting, final T val, Predicate<T> isValidValue, IHandler<GuiSettingToggleButton<T>> onPress )
	{
		super( x, y, GuiSettingToggleButton::onPress );
		this.onPress = onPress;

		// Build a list of values (in order) that are valid w.r.t. the given predicate
		EnumSet<T> validValues = EnumSet.allOf(val.getDeclaringClass());
		validValues.removeIf(isValidValue.negate());
		validValues.removeIf(s -> !setting.getPossibleValues().contains(s));
		this.validValues = validValues;

		this.buttonSetting = setting;
		this.currentValue = val;

		if( appearances == null )
		{
			appearances = new HashMap<>();
			registerApp( 16 * 7, Settings.CONDENSER_OUTPUT, CondenserOutput.TRASH, ButtonToolTips.CondenserOutput, ButtonToolTips.Trash );
			registerApp( 16 * 7 + 1, Settings.CONDENSER_OUTPUT, CondenserOutput.MATTER_BALLS, ButtonToolTips.CondenserOutput, ButtonToolTips.MatterBalls );
			registerApp( 16 * 7 + 2, Settings.CONDENSER_OUTPUT, CondenserOutput.SINGULARITY, ButtonToolTips.CondenserOutput, ButtonToolTips.Singularity );

			registerApp( 16 * 9 + 1, Settings.ACCESS, AccessRestriction.READ, ButtonToolTips.IOMode, ButtonToolTips.Read );
			registerApp( 16 * 9, Settings.ACCESS, AccessRestriction.WRITE, ButtonToolTips.IOMode, ButtonToolTips.Write );
			registerApp( 16 * 9 + 2, Settings.ACCESS, AccessRestriction.READ_WRITE, ButtonToolTips.IOMode, ButtonToolTips.ReadWrite );

			registerApp( 16 * 10, Settings.POWER_UNITS, PowerUnits.AE, ButtonToolTips.PowerUnits, PowerUnits.AE.textComponent() );
			registerApp( 16 * 10 + 1, Settings.POWER_UNITS, PowerUnits.EU, ButtonToolTips.PowerUnits, PowerUnits.EU.textComponent() );
			registerApp( 16 * 10 + 4, Settings.POWER_UNITS, PowerUnits.RF, ButtonToolTips.PowerUnits, PowerUnits.RF.textComponent() );

			registerApp( 3, Settings.REDSTONE_CONTROLLED, RedstoneMode.IGNORE, ButtonToolTips.RedstoneMode, ButtonToolTips.AlwaysActive );
			registerApp( 0, Settings.REDSTONE_CONTROLLED, RedstoneMode.LOW_SIGNAL, ButtonToolTips.RedstoneMode, ButtonToolTips.ActiveWithoutSignal );
			registerApp( 1, Settings.REDSTONE_CONTROLLED, RedstoneMode.HIGH_SIGNAL, ButtonToolTips.RedstoneMode, ButtonToolTips.ActiveWithSignal );
			registerApp( 2, Settings.REDSTONE_CONTROLLED, RedstoneMode.SIGNAL_PULSE, ButtonToolTips.RedstoneMode, ButtonToolTips.ActiveOnPulse );

			registerApp( 0, Settings.REDSTONE_EMITTER, RedstoneMode.LOW_SIGNAL, ButtonToolTips.RedstoneMode, ButtonToolTips.EmitLevelsBelow );
			registerApp( 1, Settings.REDSTONE_EMITTER, RedstoneMode.HIGH_SIGNAL, ButtonToolTips.RedstoneMode, ButtonToolTips.EmitLevelAbove );

			registerApp( 51, Settings.OPERATION_MODE, OperationMode.FILL, ButtonToolTips.TransferDirection, ButtonToolTips.TransferToStorageCell );
			registerApp( 50, Settings.OPERATION_MODE, OperationMode.EMPTY, ButtonToolTips.TransferDirection, ButtonToolTips.TransferToNetwork );

			registerApp( 51, Settings.IO_DIRECTION, RelativeDirection.LEFT, ButtonToolTips.TransferDirection, ButtonToolTips.TransferToStorageCell );
			registerApp( 50, Settings.IO_DIRECTION, RelativeDirection.RIGHT, ButtonToolTips.TransferDirection, ButtonToolTips.TransferToNetwork );

			registerApp( 48, Settings.SORT_DIRECTION, SortDir.ASCENDING, ButtonToolTips.SortOrder, ButtonToolTips.ToggleSortDirection );
			registerApp( 49, Settings.SORT_DIRECTION, SortDir.DESCENDING, ButtonToolTips.SortOrder, ButtonToolTips.ToggleSortDirection );

			registerApp( 16 * 2 + 3, Settings.SEARCH_MODE, SearchBoxMode.AUTOSEARCH, ButtonToolTips.SearchMode, ButtonToolTips.SearchMode_Auto );
			registerApp( 16 * 2 + 4, Settings.SEARCH_MODE, SearchBoxMode.MANUAL_SEARCH, ButtonToolTips.SearchMode, ButtonToolTips.SearchMode_Standard );
			registerApp( 16 * 2 + 5, Settings.SEARCH_MODE, SearchBoxMode.JEI_AUTOSEARCH, ButtonToolTips.SearchMode, ButtonToolTips.SearchMode_JEIAuto );
			registerApp( 16 * 2 + 6, Settings.SEARCH_MODE, SearchBoxMode.JEI_MANUAL_SEARCH, ButtonToolTips.SearchMode,
					ButtonToolTips.SearchMode_JEIStandard );
			registerApp( 16 * 2 + 7, Settings.SEARCH_MODE, SearchBoxMode.AUTOSEARCH_KEEP, ButtonToolTips.SearchMode, ButtonToolTips.SearchMode_AutoKeep );
			registerApp( 16 * 2 + 8, Settings.SEARCH_MODE, SearchBoxMode.MANUAL_SEARCH_KEEP, ButtonToolTips.SearchMode,
					ButtonToolTips.SearchMode_StandardKeep );
			registerApp( 16 * 2 + 9, Settings.SEARCH_MODE, SearchBoxMode.JEI_AUTOSEARCH_KEEP, ButtonToolTips.SearchMode,
					ButtonToolTips.SearchMode_JEIAutoKeep );
			registerApp( 16 * 2 + 10, Settings.SEARCH_MODE, SearchBoxMode.JEI_MANUAL_SEARCH_KEEP, ButtonToolTips.SearchMode,
					ButtonToolTips.SearchMode_JEIStandardKeep );

			registerApp( 16 * 5 + 3, Settings.LEVEL_TYPE, LevelType.ENERGY_LEVEL, ButtonToolTips.LevelType, ButtonToolTips.LevelType_Energy );
			registerApp( 16 * 4 + 3, Settings.LEVEL_TYPE, LevelType.ITEM_LEVEL, ButtonToolTips.LevelType, ButtonToolTips.LevelType_Item );

			registerApp( 16 * 13, Settings.TERMINAL_STYLE, TerminalStyle.TALL, ButtonToolTips.TerminalStyle, ButtonToolTips.TerminalStyle_Tall );
			registerApp( 16 * 13 + 1, Settings.TERMINAL_STYLE, TerminalStyle.SMALL, ButtonToolTips.TerminalStyle, ButtonToolTips.TerminalStyle_Small );
			registerApp( 16 * 13 + 2, Settings.TERMINAL_STYLE, TerminalStyle.FULL, ButtonToolTips.TerminalStyle, ButtonToolTips.TerminalStyle_Full );

			registerApp( 64, Settings.SORT_BY, SortOrder.NAME, ButtonToolTips.SortBy, ButtonToolTips.ItemName );
			registerApp( 65, Settings.SORT_BY, SortOrder.AMOUNT, ButtonToolTips.SortBy, ButtonToolTips.NumberOfItems );
			registerApp( 68, Settings.SORT_BY, SortOrder.INVTWEAKS, ButtonToolTips.SortBy, ButtonToolTips.InventoryTweaks );
			registerApp( 69, Settings.SORT_BY, SortOrder.MOD, ButtonToolTips.SortBy, ButtonToolTips.Mod );

			registerApp( 16, Settings.VIEW_MODE, ViewItems.STORED, ButtonToolTips.View, ButtonToolTips.StoredItems );
			registerApp( 18, Settings.VIEW_MODE, ViewItems.ALL, ButtonToolTips.View, ButtonToolTips.StoredCraftable );
			registerApp( 19, Settings.VIEW_MODE, ViewItems.CRAFTABLE, ButtonToolTips.View, ButtonToolTips.Craftable );

			registerApp( 16 * 6, Settings.FUZZY_MODE, FuzzyMode.PERCENT_25, ButtonToolTips.FuzzyMode, ButtonToolTips.FZPercent_25 );
			registerApp( 16 * 6 + 1, Settings.FUZZY_MODE, FuzzyMode.PERCENT_50, ButtonToolTips.FuzzyMode, ButtonToolTips.FZPercent_50 );
			registerApp( 16 * 6 + 2, Settings.FUZZY_MODE, FuzzyMode.PERCENT_75, ButtonToolTips.FuzzyMode, ButtonToolTips.FZPercent_75 );
			registerApp( 16 * 6 + 3, Settings.FUZZY_MODE, FuzzyMode.PERCENT_99, ButtonToolTips.FuzzyMode, ButtonToolTips.FZPercent_99 );
			registerApp( 16 * 6 + 4, Settings.FUZZY_MODE, FuzzyMode.IGNORE_ALL, ButtonToolTips.FuzzyMode, ButtonToolTips.FZIgnoreAll );

			registerApp( 80, Settings.FULLNESS_MODE, FullnessMode.EMPTY, ButtonToolTips.OperationMode, ButtonToolTips.MoveWhenEmpty );
			registerApp( 81, Settings.FULLNESS_MODE, FullnessMode.HALF, ButtonToolTips.OperationMode, ButtonToolTips.MoveWhenWorkIsDone );
			registerApp( 82, Settings.FULLNESS_MODE, FullnessMode.FULL, ButtonToolTips.OperationMode, ButtonToolTips.MoveWhenFull );

			registerApp( 16 + 5, Settings.BLOCK, YesNo.YES, ButtonToolTips.InterfaceBlockingMode, ButtonToolTips.Blocking );
			registerApp( 16 + 4, Settings.BLOCK, YesNo.NO, ButtonToolTips.InterfaceBlockingMode, ButtonToolTips.NonBlocking );

			registerApp( 16 + 3, Settings.CRAFT_ONLY, YesNo.YES, ButtonToolTips.Craft, ButtonToolTips.CraftOnly );
			registerApp( 16 + 2, Settings.CRAFT_ONLY, YesNo.NO, ButtonToolTips.Craft, ButtonToolTips.CraftEither );

			registerApp( 16 * 11 + 2, Settings.CRAFT_VIA_REDSTONE, YesNo.YES, ButtonToolTips.EmitterMode, ButtonToolTips.CraftViaRedstone );
			registerApp( 16 * 11 + 1, Settings.CRAFT_VIA_REDSTONE, YesNo.NO, ButtonToolTips.EmitterMode, ButtonToolTips.EmitWhenCrafting );

			registerApp( 16 * 3 + 5, Settings.STORAGE_FILTER, StorageFilter.EXTRACTABLE_ONLY, ButtonToolTips.ReportInaccessibleItems,
					ButtonToolTips.ReportInaccessibleItemsNo );
			registerApp( 16 * 3 + 6, Settings.STORAGE_FILTER, StorageFilter.NONE, ButtonToolTips.ReportInaccessibleItems,
					ButtonToolTips.ReportInaccessibleItemsYes );

			registerApp( 16 * 14, Settings.PLACE_BLOCK, YesNo.YES, ButtonToolTips.BlockPlacement, ButtonToolTips.BlockPlacementYes );
			registerApp( 16 * 14 + 1, Settings.PLACE_BLOCK, YesNo.NO, ButtonToolTips.BlockPlacement, ButtonToolTips.BlockPlacementNo );

			registerApp( 16 * 15, Settings.SCHEDULING_MODE, SchedulingMode.DEFAULT, ButtonToolTips.SchedulingMode, ButtonToolTips.SchedulingModeDefault );
			registerApp( 16 * 15 + 1, Settings.SCHEDULING_MODE, SchedulingMode.ROUNDROBIN, ButtonToolTips.SchedulingMode,
					ButtonToolTips.SchedulingModeRoundRobin );
			registerApp( 16 * 15 + 2, Settings.SCHEDULING_MODE, SchedulingMode.RANDOM, ButtonToolTips.SchedulingMode,
					ButtonToolTips.SchedulingModeRandom );
		}
	}

	private static void onPress(Button btn) {
		if (btn instanceof GuiSettingToggleButton) {
			((GuiSettingToggleButton<?>) btn).triggerPress();
		}
	}

	private void triggerPress() {
		boolean backwards = Minecraft.getInstance().mouseHelper.isRightDown();
		onPress.handle(this, backwards);
	}

	private static void registerApp( final int iconIndex, final Settings setting, final Enum<?> val, final ButtonToolTips title, final ITextComponent hint )
	{
		final ButtonAppearance a = new ButtonAppearance();
		a.displayName = title.getTranslationKey();
		a.displayValue = hint;
		a.index = iconIndex;
		appearances.put( new EnumPair( setting, val ), a );
	}

	private static void registerApp( final int iconIndex, final Settings setting, final Enum<?> val, final ButtonToolTips title, final ButtonToolTips hint )
	{
		registerApp(iconIndex, setting, val, title, hint.getTranslationKey());
	}

	@Override
	protected int getIconIndex()
	{
		if( this.buttonSetting != null && this.currentValue != null )
		{
			final ButtonAppearance app = appearances.get( new EnumPair( this.buttonSetting, this.currentValue ) );
			if( app == null )
			{
				return 256 - 1;
			}
			return app.index;
		}
		return 256 - 1;
	}

	public Settings getSetting()
	{
		return this.buttonSetting;
	}

	public T getCurrentValue()
	{
		return this.currentValue;
	}

	public void set( final T e )
	{
		if( this.currentValue != e )
		{
			this.currentValue = e;
		}
	}

	public T getNextValue(boolean backwards) {
		return EnumCycler.rotateEnum(currentValue, backwards, validValues);
	}

	@Override
	public String getMessage()
	{
		ITextComponent displayName = null;
		ITextComponent displayValue = null;

		if( this.buttonSetting != null && this.currentValue != null )
		{
			final ButtonAppearance buttonAppearance = appearances.get( new EnumPair( this.buttonSetting, this.currentValue ) );
			if( buttonAppearance == null )
			{
				return "No Such Message";
			}

			displayName = buttonAppearance.displayName;
			displayValue = buttonAppearance.displayValue;
		}

		if( displayName != null )
		{
			String name = displayName.getString();
			String value = displayValue.getString();

			if( this.fillVar != null )
			{
				value = COMPILE.matcher( value ).replaceFirst( this.fillVar );
			}

			value = PATTERN_NEW_LINE.matcher( value ).replaceAll( "\n" );
			final StringBuilder sb = new StringBuilder( value );

			int i = sb.lastIndexOf( "\n" );
			if( i <= 0 )
			{
				i = 0;
			}
			while( i + 30 < sb.length() && ( i = sb.lastIndexOf( " ", i + 30 ) ) != -1 )
			{
				sb.replace( i, i + 1, "\n" );
			}

			return name + '\n' + sb;
		}
		return null;
	}

	public String getFillVar()
	{
		return this.fillVar;
	}

	public void setFillVar( final String fillVar )
	{
		this.fillVar = fillVar;
	}

	private static final class EnumPair
	{

		final Settings setting;
		final Enum<?> value;

		EnumPair( final Settings a, final Enum<?> b )
		{
			this.setting = a;
			this.value = b;
		}

		@Override
		public int hashCode()
		{
			return this.setting.hashCode() ^ this.value.hashCode();
		}

		@Override
		public boolean equals( final Object obj )
		{
			if( obj == null )
			{
				return false;
			}
			if( this.getClass() != obj.getClass() )
			{
				return false;
			}
			final EnumPair other = (EnumPair) obj;
			return other.setting == this.setting && other.value == this.value;
		}
	}

	private static class ButtonAppearance
	{
		public int index;
		public ITextComponent displayName;
		public ITextComponent displayValue;
	}
}