/*
 * Copyright (c) 2002-2008 LWJGL Project All rights reserved. Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following conditions are met: * Redistributions of source code
 * must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in
 * binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution. * Neither the name of 'LWJGL' nor the names of
 * its contributors may be used to endorse or promote products derived from this software without specific prior written
 * permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package gtPlusPlus.preloader.keyboard;

import java.lang.reflect.Field;
import java.nio.ByteBuffer;
import java.util.HashMap;
import java.util.Map;

import net.minecraft.client.resources.I18n;

import org.apache.logging.log4j.Level;
import org.lwjgl.BufferUtils;
import org.lwjgl.input.Keyboard;

import cpw.mods.fml.relauncher.FMLRelaunchLog;
import gtPlusPlus.core.util.reflect.ReflectionUtils;
import gtPlusPlus.preloader.asm.transformers.ClassTransformer_LWJGL_Keyboard;

/**
 * <br>
 * A raw Keyboard interface. This can be used to poll the current state of the keys, or read all the keyboard presses /
 * releases since the last read.
 *
 * DO NOT REMOVE. CALLED BY ASM CODE.
 *
 * @author cix_foo <cix_foo@users.sourceforge.net>
 * @author elias_naur <elias_naur@users.sourceforge.net>
 * @author Brian Matzon <brian@matzon.dk>
 * @version $Revision$ $Id$
 */
@SuppressWarnings("unused")
public class BetterKeyboard {

    public static final int KEYBOARD_SIZE = Short.MAX_VALUE;

    private static boolean init = false;

    public static void init() {
        if (!init) {
            FMLRelaunchLog.log(
                "[GT++ ASM] LWJGL Keybinding index out of bounds fix",
                Level.INFO,
                "Trying to patch out LWJGL internal arrays with larger ones.");
            Field aKeyNameSize = ReflectionUtils.getField(Keyboard.class, "keyName");
            Field aKeyMapSize = ReflectionUtils.getField(Keyboard.class, "keyMap");
            Field aKeyDownBuffer = ReflectionUtils.getField(Keyboard.class, "keyDownBuffer");
            String[] aOldKeyNameArray = ReflectionUtils.getFieldValue(aKeyNameSize);
            if (aOldKeyNameArray != null && aOldKeyNameArray.length < Short.MAX_VALUE) {
                String[] aNewKeyNameArray = new String[Short.MAX_VALUE];
                for (int i = 0; i < aOldKeyNameArray.length; i++) {
                    aNewKeyNameArray[i] = aOldKeyNameArray[i];
                }
                try {
                    ReflectionUtils.setFinalFieldValue(Keyboard.class, aKeyNameSize.getName(), aNewKeyNameArray);
                    FMLRelaunchLog.log(
                        "[GT++ ASM] LWJGL Keybinding index out of bounds fix",
                        Level.INFO,
                        "Patched Field: " + aKeyNameSize.getName());
                } catch (Throwable t) {
                    FMLRelaunchLog.log(
                        "[GT++ ASM] LWJGL Keybinding index out of bounds fix",
                        Level.INFO,
                        "Failed Patching Field: " + aKeyDownBuffer.getName());
                }
            }
            Map<String, Integer> aOldKeyMapArray = ReflectionUtils.getFieldValue(aKeyMapSize);
            if (aOldKeyNameArray != null && aOldKeyMapArray.size() < Short.MAX_VALUE) {
                Map<String, Integer> aNewKeyMapArray = new HashMap<String, Integer>(Short.MAX_VALUE);
                aNewKeyMapArray.putAll(aOldKeyMapArray);
                try {
                    ReflectionUtils.setFinalFieldValue(Keyboard.class, aKeyMapSize.getName(), aNewKeyMapArray);
                    FMLRelaunchLog.log(
                        "[GT++ ASM] LWJGL Keybinding index out of bounds fix",
                        Level.INFO,
                        "Patched Field: " + aKeyMapSize.getName());
                } catch (Throwable t) {
                    FMLRelaunchLog.log(
                        "[GT++ ASM] LWJGL Keybinding index out of bounds fix",
                        Level.INFO,
                        "Failed Patching Field: " + aKeyDownBuffer.getName());
                }
            }
            ByteBuffer aOldByteBuffer = ReflectionUtils.getFieldValue(aKeyDownBuffer);
            if (aOldByteBuffer != null && aOldByteBuffer.capacity() == Keyboard.KEYBOARD_SIZE) {
                ByteBuffer aNewByteBuffer = BufferUtils.createByteBuffer(Short.MAX_VALUE);
                try {
                    ReflectionUtils.setFinalFieldValue(Keyboard.class, aKeyDownBuffer.getName(), aNewByteBuffer);
                    FMLRelaunchLog.log(
                        "[GT++ ASM] LWJGL Keybinding index out of bounds fix",
                        Level.INFO,
                        "Patched Field: " + aKeyDownBuffer.getName());
                } catch (Throwable t) {
                    FMLRelaunchLog.log(
                        "[GT++ ASM] LWJGL Keybinding index out of bounds fix",
                        Level.INFO,
                        "Failed Patching Field: " + aKeyDownBuffer.getName());
                }
            }
            init = true;
        }
    }

    /**
     * Gets a key's name
     * 
     * @param key The key
     * @return a String with the key's human readable name in it or null if the key is unnamed
     */
    public static synchronized String getKeyName(int key) {
        return ClassTransformer_LWJGL_Keyboard.getKeyName(key);
    }

    /**
     * Represents a key or mouse button as a string. Args: key
     */
    public static String getKeyDisplayString(int aKeyValue) {
        return aKeyValue < 0 ? I18n.format("key.mouseButton", new Object[] { Integer.valueOf(aKeyValue + 101) })
            : getKeyName(aKeyValue);
    }
}