package org.warp.jcwdb;

import java.util.Objects;

public class IndexDetails {
	/**
	 * The bitmask is used to determine if an index has been deleted
	 */
	public static final int BITMASK_SIZE = Integer.BYTES;
	public static final int OFFSET_BYTES = Long.BYTES;
	public static final int DATA_SIZE_BYTES = Integer.BYTES;
	public static final int TYPE_BYTES = Integer.BYTES;
	public static final int HASH_BYTES = Long.BYTES;
	public static final int TOTAL_BYTES = BITMASK_SIZE + OFFSET_BYTES + DATA_SIZE_BYTES + TYPE_BYTES + HASH_BYTES;
	public static final int MASK_DELETED = 0b00000001;
	private final long offset;
	private final int size;
	private final int type;
	private final long hash;

	public IndexDetails(long offset, int size, int type, long hash) {
		this.offset = offset;
		this.size = size;
		this.type = type;
		this.hash = hash;
	}

	public IndexDetails(IndexDetails indexDetails) {
		this.offset = indexDetails.offset;
		this.size = indexDetails.size;
		this.type = indexDetails.type;
		this.hash = indexDetails.hash;
	}

	public long getOffset() {
		return offset;
	}

	public int getSize() {
		return size;
	}

	public int getType() {
		return type;
	}
	
	public long getHash() {
		return hash;
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + (int) (hash ^ (hash >>> 32));
		result = prime * result + (int) (offset ^ (offset >>> 32));
		result = prime * result + size;
		result = prime * result + type;
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		IndexDetails other = (IndexDetails) obj;
		if (hash != other.hash)
			return false;
		if (offset != other.offset)
			return false;
		if (size != other.size)
			return false;
		if (type != other.type)
			return false;
		return true;
	}

	@Override
	public String toString() {
		return "IndexDetails [offset=" + offset + ", size=" + size + ", type=" + type + ", hash=" + hash + "]";
	}
	

}