/***************************************************************************
 *                              SaveMetrics.cs
 *                            -------------------
 *   begin                : May 1, 2002
 *   copyright            : (C) The RunUO Software Team
 *   email                : info@runuo.com
 *
 *   $Id$
 *
 ***************************************************************************/

/***************************************************************************
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 ***************************************************************************/

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Text;

namespace Server {
	public sealed class SaveMetrics : IDisposable {
		private const string PerformanceCategoryName = "Ultima";
		private const string PerformanceCategoryDesc = "Performance counters for Ultima.";

		private PerformanceCounter numberOfWorldSaves;

		private PerformanceCounter itemsPerSecond;
		private PerformanceCounter mobilesPerSecond;

		private PerformanceCounter serializedBytesPerSecond;
		private PerformanceCounter writtenBytesPerSecond;

		public SaveMetrics() {
			if ( !PerformanceCounterCategory.Exists( PerformanceCategoryName ) ) {
				CounterCreationDataCollection counters = new CounterCreationDataCollection();

				counters.Add( new CounterCreationData(
						"Save - Count",
						"Number of world saves.",
						PerformanceCounterType.NumberOfItems32
					)
				);

				counters.Add( new CounterCreationData(
						"Save - Items/sec",
						"Number of items saved per second.",
						PerformanceCounterType.RateOfCountsPerSecond32
					)
				);

				counters.Add( new CounterCreationData(
						"Save - Mobiles/sec",
						"Number of mobiles saved per second.",
						PerformanceCounterType.RateOfCountsPerSecond32
					)
				);

				counters.Add( new CounterCreationData(
						"Save - Serialized bytes/sec",
						"Amount of world-save bytes serialized per second.",
						PerformanceCounterType.RateOfCountsPerSecond32
					)
				);

				counters.Add( new CounterCreationData(
						"Save - Written bytes/sec",
						"Amount of world-save bytes written to disk per second.",
						PerformanceCounterType.RateOfCountsPerSecond32
					)
				);

#if !MONO
				PerformanceCounterCategory.Create( PerformanceCategoryName, PerformanceCategoryDesc, PerformanceCounterCategoryType.SingleInstance, counters );
#endif
			}

			numberOfWorldSaves = new PerformanceCounter( PerformanceCategoryName, "Save - Count", false );

			itemsPerSecond = new PerformanceCounter( PerformanceCategoryName, "Save - Items/sec", false );
			mobilesPerSecond = new PerformanceCounter( PerformanceCategoryName, "Save - Mobiles/sec", false );

			serializedBytesPerSecond = new PerformanceCounter( PerformanceCategoryName, "Save - Serialized bytes/sec", false );
			writtenBytesPerSecond = new PerformanceCounter( PerformanceCategoryName, "Save - Written bytes/sec", false );

			// increment number of world saves
			numberOfWorldSaves.Increment();
		}

		public void OnItemSaved( int numberOfBytes ) {
			itemsPerSecond.Increment();

			serializedBytesPerSecond.IncrementBy( numberOfBytes );
		}

		public void OnMobileSaved( int numberOfBytes ) {
			mobilesPerSecond.Increment();

			serializedBytesPerSecond.IncrementBy( numberOfBytes );
		}

		public void OnGuildSaved( int numberOfBytes ) {
			serializedBytesPerSecond.IncrementBy( numberOfBytes );
		}

		public void OnFileWritten( int numberOfBytes ) {
			writtenBytesPerSecond.IncrementBy( numberOfBytes );
		}

		private bool isDisposed;

		public void Dispose() {
			if ( !isDisposed ) {
				isDisposed = true;

				numberOfWorldSaves.Dispose();

				itemsPerSecond.Dispose();
				mobilesPerSecond.Dispose();

				serializedBytesPerSecond.Dispose();
				writtenBytesPerSecond.Dispose();
			}
		}
	}
}
