package net.lightstone.util.nbt;

/**
 * A class which contains NBT-related utility methods.
 * @author Graham Edgecombe
 */
public final class NBTUtils {

	/**
	 * Gets the type name of a tag.
	 * @param clazz The tag class.
	 * @return The type name.
	 */
	public static String getTypeName(Class<? extends Tag> clazz) {
		if (clazz.equals(ByteArrayTag.class)) {
			return "TAG_Byte_Array";
		} else if (clazz.equals(ByteTag.class)) {
			return "TAG_Byte";
		} else if (clazz.equals(CompoundTag.class)) {
			return "TAG_Compound";
		} else if (clazz.equals(DoubleTag.class)) {
			return "TAG_Double";
		} else if (clazz.equals(EndTag.class)) {
			return "TAG_End";
		} else if (clazz.equals(FloatTag.class)) {
			return "TAG_Float";
		} else if (clazz.equals(IntTag.class)) {
			return "TAG_Int";
		} else if (clazz.equals(ListTag.class)) {
			return "TAG_List";
		} else if (clazz.equals(LongTag.class)) {
			return "TAG_Long";
		} else if (clazz.equals(ShortTag.class)) {
			return "TAG_Short";
		} else if (clazz.equals(StringTag.class)) {
			return "TAG_String";
		} else {
			throw new IllegalArgumentException("Invalid tag classs (" + clazz.getName() + ").");
		}
	}

	/**
	 * Gets the type code of a tag class.
	 * @param clazz The tag class.
	 * @return The type code.
	 * @throws IllegalArgumentException if the tag class is invalid.
	 */
	public static int getTypeCode(Class<? extends Tag> clazz) {
		if (clazz.equals(ByteArrayTag.class)) {
			return NBTConstants.TYPE_BYTE_ARRAY;
		} else if (clazz.equals(ByteTag.class)) {
			return NBTConstants.TYPE_BYTE;
		} else if (clazz.equals(CompoundTag.class)) {
			return NBTConstants.TYPE_COMPOUND;
		} else if (clazz.equals(DoubleTag.class)) {
			return NBTConstants.TYPE_DOUBLE;
		} else if (clazz.equals(EndTag.class)) {
			return NBTConstants.TYPE_END;
		} else if (clazz.equals(FloatTag.class)) {
			return NBTConstants.TYPE_FLOAT;
		} else if (clazz.equals(IntTag.class)) {
			return NBTConstants.TYPE_INT;
		} else if (clazz.equals(ListTag.class)) {
			return NBTConstants.TYPE_LIST;
		} else if (clazz.equals(LongTag.class)) {
			return NBTConstants.TYPE_LONG;
		} else if (clazz.equals(ShortTag.class)) {
			return NBTConstants.TYPE_SHORT;
		} else if (clazz.equals(StringTag.class)) {
			return NBTConstants.TYPE_STRING;
		} else {
			throw new IllegalArgumentException("Invalid tag classs (" + clazz.getName() + ").");
		}
	}

	/**
	 * Gets the class of a type of tag.
	 * @param type The type.
	 * @return The class.
	 * @throws IllegalArgumentException if the tag type is invalid.
	 */
	public static Class<? extends Tag> getTypeClass(int type) {
		switch (type) {
		case NBTConstants.TYPE_END:
			return EndTag.class;
		case NBTConstants.TYPE_BYTE:
			return ByteTag.class;
		case NBTConstants.TYPE_SHORT:
			return ShortTag.class;
		case NBTConstants.TYPE_INT:
			return IntTag.class;
		case NBTConstants.TYPE_LONG:
			return LongTag.class;
		case NBTConstants.TYPE_FLOAT:
			return FloatTag.class;
		case NBTConstants.TYPE_DOUBLE:
			return DoubleTag.class;
		case NBTConstants.TYPE_BYTE_ARRAY:
			return ByteArrayTag.class;
		case NBTConstants.TYPE_STRING:
			return StringTag.class;
		case NBTConstants.TYPE_LIST:
			return ListTag.class;
		case NBTConstants.TYPE_COMPOUND:
			return CompoundTag.class;
		default:
			throw new IllegalArgumentException("Invalid tag type : " + type + ".");
		}
	}

	/**
	 * Default private constructor.
	 */
	private NBTUtils() {

	}

}

