/*
 * Created on 06/03/2005
 *
 * JRandTest package
 *
 * Copyright (c) 2005, Zur Aougav, aougav@hotmail.com
 * 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 the JRandTest 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 com.fasteasytrade.JRandTest.IO;

import java.io.FileInputStream;

/**
 * @author Zur Aougav
 *  
 */
public class FileAlgoRandomStream extends FileRandomStream implements
		AlgoRandomStream {

	public int publicKeyLength = 256; // length in bytes, 8 bits each

	public byte[] publicKey = null;

	public int privateKeyLength = 256; // length in bytes, 8 bits each

	public byte[] privateKey = null;

	public int maxCount = 0xfffffff; // 2 ^ 28 - "length" of algorithm stream

	public FileAlgoRandomStream() {
		super();
		setupKeys();
	}

	public FileAlgoRandomStream(String s) {
		super(s);
		//filename = s;
		setupKeys();
	}

	/**
	 * @see com.fasteasytrade.JRandTest.IO.AlgoRandomStream#setupKeys()
	 */
	@Override
	public void setupKeys() {
		publicKey = new byte[publicKeyLength];
		privateKey = new byte[privateKeyLength];
	}

	/**
	 * @see com.fasteasytrade.JRandTest.IO.AlgoRandomStream#setPublicKeyFromFile(java.lang.String)
	 */
	@Override
	public void setPublicKeyFromFile(String f) {
		try (FileInputStream fis = new FileInputStream(f)) {
			fis.read(publicKey);
		} catch (Exception e) {
			System.out.println(e);
		}
	}

	/**
	 * @see com.fasteasytrade.JRandTest.IO.AlgoRandomStream#setPublicKey(byte[])
	 */
	@Override
	public void setPublicKey(byte[] k) {
		if (k == null)
			return;
		for (int i = 0; i < publicKeyLength; i++)
			publicKey[i] = k[i % k.length];
	}

	/**
	 * @see com.fasteasytrade.JRandTest.IO.AlgoRandomStream#setPrivateKeyFromFile(java.lang.String)
	 */
	@Override
	public void setPrivateKeyFromFile(String f) {
		try (FileInputStream fis = new FileInputStream(f)) {
			fis.read(privateKey);
		} catch (Exception e) {
			System.out.println(e);
		}
	}

	/**
	 * @see com.fasteasytrade.JRandTest.IO.AlgoRandomStream#setPrivateKey(byte[])
	 */
	@Override
	public void setPrivateKey(byte[] k) {
		if (k == null)
			return;
		for (int i = 0; i < privateKeyLength; i++)
			privateKey[i] = k[i % k.length];
	}

	/**
	 * setup will be implemented by each subclass
	 * 
	 * @see com.fasteasytrade.JRandTest.IO.AlgoRandomStream#setup()
	 */
	@Override
	public void setup() {
	}

	/**
	 * @param s
	 *            set algorithm input filename file
	 */
	@Override
	public void setFilename(String s) {
		filename = s;
	}

	/**
	 * @return algorithm input filename file
	 */
	@Override
	public String getFilename() {
		return filename;
	}

	/**
	 * @see com.fasteasytrade.JRandTest.IO.RandomStream#readByte()
	 */
	@Override
	public byte readByte() throws Exception {
		return super.readByte();
	}

	/**
	 * @see com.fasteasytrade.JRandTest.IO.RandomStream#readInt()
	 */
	@Override
	public int readInt() throws Exception {
		return super.readInt();
	}

	/**
	 * @see com.fasteasytrade.JRandTest.IO.RandomStream#readLong()
	 */
	@Override
	public long readLong() throws Exception {
		return super.readLong();
	}
}