/*
    * Copyright (C) 2016, Google Inc. and others
    *
    * This program and the accompanying materials are made available under the
    * terms of the Eclipse Distribution License v. 1.0 which is available at
    * https://www.eclipse.org/org/documents/edl-v10.php.
    *
    * SPDX-License-Identifier: BSD-3-Clause
    */
  
  package org.eclipse.jgit.transport;
  
  import org.eclipse.jgit.lib.Constants;
  
  /**
   * Statistics about {@link org.eclipse.jgit.transport.PackParser}.
   *
   * @since 4.6
   */
  public class ReceivedPackStatistics {
  	private long numBytesRead;
  	private long numBytesDuplicated;
  
  	private long numWholeCommit;
  	private long numWholeTree;
  	private long numWholeBlob;
  	private long numWholeTag;
  	private long numOfsDelta;
  	private long numRefDelta;
  	private long numObjectsDuplicated;
  
  	private long numDeltaCommit;
  	private long numDeltaTree;
  	private long numDeltaBlob;
  	private long numDeltaTag;
  
  	/**
  	 * Get number of bytes read from the input stream
  	 *
  	 * @return number of bytes read from the input stream
  	 */
  	public long getNumBytesRead() {
  		return numBytesRead;
  	}
  
  	/**
  	 * Get number of bytes of objects already in the local database
  	 *
  	 * @return number of bytes of objects appeared in both the pack sent by the
  	 *         client and the local database
  	 * @since 5.10
  	 */
  	public long getNumBytesDuplicated() {
  		return numBytesDuplicated;
  	}
  
  	/**
  	 * Get number of whole commit objects in the pack
  	 *
  	 * @return number of whole commit objects in the pack
  	 */
  	public long getNumWholeCommit() {
  		return numWholeCommit;
  	}
  
  	/**
  	 * Get number of whole tree objects in the pack
  	 *
  	 * @return number of whole tree objects in the pack
  	 */
  	public long getNumWholeTree() {
  		return numWholeTree;
  	}
  
  	/**
  	 * Get number of whole blob objects in the pack
  	 *
  	 * @return number of whole blob objects in the pack
  	 */
  	public long getNumWholeBlob() {
  		return numWholeBlob;
  	}
  
  	/**
  	 * Get number of whole tag objects in the pack
  	 *
  	 * @return number of whole tag objects in the pack
  	 */
  	public long getNumWholeTag() {
  		return numWholeTag;
  	}
  
  	/**
  	 * Get number of offset delta objects in the pack
  	 *
  	 * @return number of offset delta objects in the pack
  	 */
  	public long getNumOfsDelta() {
  		return numOfsDelta;
 	}
 
 	/**
 	 * Get number of ref delta objects in the pack
 	 *
 	 * @return number of ref delta objects in the pack
 	 */
 	public long getNumRefDelta() {
 		return numRefDelta;
 	}
 
 	/**
 	 * Get number of objects already in the local database
 	 *
 	 * @return number of objects appeared in both the pack sent by the client
 	 *         and the local database
 	 * @since 5.10
 	 */
 	public long getNumObjectsDuplicated() {
 		return numObjectsDuplicated;
 	}
 
 	/**
 	 * Get number of delta commit objects in the pack
 	 *
 	 * @return number of delta commit objects in the pack
 	 */
 	public long getNumDeltaCommit() {
 		return numDeltaCommit;
 	}
 
 	/**
 	 * Get number of delta tree objects in the pack
 	 *
 	 * @return number of delta tree objects in the pack
 	 */
 	public long getNumDeltaTree() {
 		return numDeltaTree;
 	}
 
 	/**
 	 * Get number of delta blob objects in the pack
 	 *
 	 * @return number of delta blob objects in the pack
 	 */
 	public long getNumDeltaBlob() {
 		return numDeltaBlob;
 	}
 
 	/**
 	 * Get number of delta tag objects in the pack
 	 *
 	 * @return number of delta tag objects in the pack
 	 */
 	public long getNumDeltaTag() {
 		return numDeltaTag;
 	}
 
 	/** A builder for {@link ReceivedPackStatistics}. */
 	public static class Builder {
 		private long numBytesRead;
 		private long numBytesDuplicated;
 
 		private long numWholeCommit;
 		private long numWholeTree;
 		private long numWholeBlob;
 		private long numWholeTag;
 		private long numOfsDelta;
 		private long numRefDelta;
 		private long numObjectsDuplicated;
 
 		private long numDeltaCommit;
 		private long numDeltaTree;
 		private long numDeltaBlob;
 		private long numDeltaTag;
 
 		/**
 		 * @param numBytesRead number of bytes read from the input stream
 		 * @return this
 		 */
 		public Builder setNumBytesRead(long numBytesRead) {
 			this.numBytesRead = numBytesRead;
 			return this;
 		}
 
 		/**
 		 * @param size
 		 *            additional bytes already in the local database
 		 * @return this
 		 * @since 5.10
 		 */
 		Builder incrementNumBytesDuplicated(long size) {
 			numBytesDuplicated += size;
 			return this;
 		}
 
 		/**
 		 * Increment a whole object count.
 		 *
 		 * @param type OBJ_COMMIT, OBJ_TREE, OBJ_BLOB, or OBJ_TAG
 		 * @return this
 		 */
 		public Builder addWholeObject(int type) {
 			switch (type) {
 				case Constants.OBJ_COMMIT:
 					numWholeCommit++;
 					break;
 				case Constants.OBJ_TREE:
 					numWholeTree++;
 					break;
 				case Constants.OBJ_BLOB:
 					numWholeBlob++;
 					break;
 				case Constants.OBJ_TAG:
 					numWholeTag++;
 					break;
 				default:
 					throw new IllegalArgumentException(
 							type + " cannot be a whole object"); //$NON-NLS-1$
 			}
 			return this;
 		}
 
 		/** @return this */
 		public Builder addOffsetDelta() {
 			numOfsDelta++;
 			return this;
 		}
 
 		/** @return this */
 		public Builder addRefDelta() {
 			numRefDelta++;
 			return this;
 		}
 
 		/**
 		 * Increment the duplicated object count.
 		 *
 		 * @return this
 		 * @since 5.10
 		 */
 		Builder incrementObjectsDuplicated() {
 			numObjectsDuplicated++;
 			return this;
 		}
 
 		/**
 		 * Increment a delta object count.
 		 *
 		 * @param type OBJ_COMMIT, OBJ_TREE, OBJ_BLOB, or OBJ_TAG
 		 * @return this
 		 */
 		public Builder addDeltaObject(int type) {
 			switch (type) {
 				case Constants.OBJ_COMMIT:
 					numDeltaCommit++;
 					break;
 				case Constants.OBJ_TREE:
 					numDeltaTree++;
 					break;
 				case Constants.OBJ_BLOB:
 					numDeltaBlob++;
 					break;
 				case Constants.OBJ_TAG:
 					numDeltaTag++;
 					break;
 				default:
 					throw new IllegalArgumentException(
 							"delta should be a delta to a whole object. " + //$NON-NLS-1$
 							type + " cannot be a whole object"); //$NON-NLS-1$
 			}
 			return this;
 		}
 
 		ReceivedPackStatistics build() {
 			ReceivedPackStatistics s = new ReceivedPackStatistics();
 			s.numBytesRead = numBytesRead;
 			s.numBytesDuplicated = numBytesDuplicated;
 			s.numWholeCommit = numWholeCommit;
 			s.numWholeTree = numWholeTree;
 			s.numWholeBlob = numWholeBlob;
 			s.numWholeTag = numWholeTag;
 			s.numOfsDelta = numOfsDelta;
 			s.numRefDelta = numRefDelta;
 			s.numDeltaCommit = numDeltaCommit;
 			s.numDeltaTree = numDeltaTree;
 			s.numDeltaBlob = numDeltaBlob;
 			s.numDeltaTag = numDeltaTag;
 			s.numObjectsDuplicated = numObjectsDuplicated;
 			return s;
 		}
 	}
 }