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package de.uniks.networkparser.bytes;

/*
NetworkParser
The MIT License
Copyright (c) 2010-2016 Stefan Lindel https://github.com/fujaba/NetworkParser/

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
import de.uniks.networkparser.EntityUtil;
import de.uniks.networkparser.buffer.ByteBuffer;
import de.uniks.networkparser.converter.ByteConverter;
import de.uniks.networkparser.converter.ByteConverterHTTP;
import de.uniks.networkparser.converter.ByteConverterString;
import de.uniks.networkparser.interfaces.BaseItem;
import de.uniks.networkparser.interfaces.ByteItem;
import de.uniks.networkparser.interfaces.Converter;
import de.uniks.networkparser.list.SimpleList;

public class ByteList extends SimpleList implements ByteItem {
	/** The children of the ByteEntity. */
	private byte type;
	
	public static final byte BIT_STRING = 0x53; // S = String;
	public static final byte BIT_NUMBER = 0x4E; // N = Number
	public static final byte BIT_BYTE = 0x42; // B = Byte
	public static final byte BIT_REFERENCE = 0x52; // R = Reference

	// Can be a Type
	public static final String PROPERTY_PROPERTY = "property";
	public static final String PROPERTY_TYPE = "type";
	public static final String PROPERTY_ORIENTATION = "orientation";

	@Override
	public BaseItem getNewList(boolean keyValue) {
		if(keyValue) {
			return new ByteEntity();
		}
		return new ByteList();
	}

	@Override
	public String toString() {
		return toString(null);
	}

	/**
	 * Convert the bytes to a String
	 *
	 * @param converter
	 *			Grammar
	 * @return converted bytes as String
	 */
	@Override
	public String toString(Converter converter) {
		if(converter instanceof ByteConverter) {
			return toString((ByteConverter)converter, false);
		}
		return toString(null, false);
	}

	/**
	 * Convert the bytes to a String
	 *
	 * @param converter
	 *			Grammar
	 * @param dynamic
	 *			if byte is dynamic
	 * @return converted bytes as String
	 */
	@Override
	public String toString(ByteConverter converter, boolean dynamic) {
		if (converter == null) {
			converter = new ByteConverterHTTP();
		}
		return converter.toString(this.getBytes(dynamic));
	}

	@Override
	public ByteBuffer getBytes(boolean isDynamic) {
		int len = calcLength(isDynamic, true);
		ByteBuffer buffer = EntityUtil.getBuffer(len);
		writeBytes(buffer, isDynamic, true, isPrimitive(isDynamic));
		buffer.flip(true);
		return buffer;
	}

	@Override
	public void writeBytes(ByteBuffer buffer, boolean isDynamic,
			boolean last, boolean isPrimitive) {
		// Override for each ByteList
		isPrimitive = isPrimitive(isDynamic);
		int size = calcChildren(isDynamic, last);
		byte type;
		if (isPrimitive) {
			type = ByteTokener.DATATYPE_CLAZZSTREAM;
		} else {
			type = EntityUtil.getType(getType(), size, last);
		}
		EntityUtil.writeByteHeader(buffer, type, size);

		for (int i = 0; i < size(); i++) {
			((ByteItem) get(i)).writeBytes(buffer, isDynamic,
					i == size() - 1, isPrimitive);
		}
	}

	@Override
	public int calcLength(boolean isDynamic, boolean isLast) {
		if (size() == 0) {
			return 1;
		}
		int length = calcChildren(isDynamic, isLast);
		// add The Headerlength
		if (type != 0) {
			length += ByteEntity.TYPEBYTE + EntityUtil.getTypeLen(type, length, isLast);
		}
		return length;
	}

	public int calcChildren(boolean isDynamic, boolean isLast) {
		int length, size = size();
		if (size < 1) {
			return 0;
		}
		boolean isPrimitive = isDynamic;
		int nullerBytes = 0;
		if (this.get(size - 1) instanceof ByteEntity) {
			// HEADER + VALUE
			isPrimitive = isPrimitive
					&& this.get(0).getType() == ByteTokener.DATATYPE_CLAZZTYPE;
			if (this.get(size - 1).getType() == ByteTokener.DATATYPE_NULL) {
				nullerBytes++;
			}
		} else {
			isPrimitive = false;
		}
		length = this.get(size - 1).calcLength(isDynamic, true);
		for (int i = size - 2; i >= 0; i--) {
			int len = this.get(i).calcLength(isDynamic, false);
			if (isPrimitive) {
				if (this.get(i).getType() == ByteTokener.DATATYPE_NULL) {
					nullerBytes++;
				}
				isPrimitive = (this.get(i).size() == len - 1);
			}
			length += len;
		}
		if (isPrimitive) {
			// Only for ByteList with value dynamic and values with cant be
			// short
			// add one for ClazzSTEAM Byte as first Byte
			length = length - size + ByteEntity.TYPEBYTE + ByteEntity.TYPEBYTE
					+ nullerBytes;
		}
		return length;
	}

	private boolean isPrimitive(boolean isDynamic) {
		if (!isDynamic) {
			return false;
		}
		if (this.size() < 1) {
			return false;
		}
		if (!(this.get(this.size() - 1) instanceof ByteEntity)) {
			return false;
		}
		if (this.get(0).getType() != ByteTokener.DATATYPE_CLAZZTYPE) {
			return false;
		}
		for (int i = 1; i < this.size(); i++) {
			int len = this.get(i).calcLength(isDynamic, false);
			if ((this.get(i).size() != len - 1)) {
				return false;
			}
		}
		return true;
	}

	@Override
	public byte getType() {
		return type;
	}

	public ByteList withType(Byte value) {
		if(value != null)
			this.type = value;
		return this;
	}

	public SimpleList withValue(String value) {
		ByteConverterString converter = new ByteConverterString();
		this.add(((ByteEntity)getNewList(true)).withValue(ByteTokener.DATATYPE_FIXED,
				converter.decode(value)));
		return this;
	}

	@Override
	public boolean remove(Object value) {
		return removeByObject(value) >= 0;
	}
}