// This file shows the calls necessary to efficiently build
// a clip cache. The steps are broken up into two sections:
// 1. Getting an initial view of all files in a bin.
// 2. Getting all future clip changes.

using System;
using System.Net;	// needed for DNS.GetHostName call
using System.Threading;
using GrassValley.Mseries.AppServer;
using GrassValley.Mseries.AppServerLog;
using GrassValley.Mseries.ChanStatus;
using GrassValley.Mseries.ConfigMgr;
using GrassValley.Mseries.Control;
using GrassValley.Mseries.DVCapture;
using GrassValley.Mseries.Editor;
using GrassValley.Mseries.MediaMgr;
using GrassValley.Mseries.Security;
using GrassValley.Mseries.Status;
using GrassValley.Mseries.TransferQueue;
// next lines needed only for running with CS-Script
//css_reference Credentials.dll;	
//css_reference ServerUtil.dll;

/// <summary>
/// This is a sample CS-Script app for controlling the Grass Valley K2 server. 
/// The code is regular C# code, but it's written for CS-Script which can
/// run it as a script from a DOS command prompt.
///
/// Go to the K2 AppServer Developer's Guide for more information:
/// http://www.gvgdevelopers.com/K2DevGuide/K2DevGuide.html#%5B%5BCS-Script%20Sample%20Scripts%5D%5D
///
/// For more information about CS-Script go to:
/// http://www.members.optusnet.com.au/~olegshilo/
/// </summary>
class K2Sample
{
	[STAThread]
	static void Main()
	{
		try
		{
			// setup variables
			AppServerMgrProxy appServerMgrProxy = null;			
			string appName = Environment.GetCommandLineArgs()[0];
			string suiteName = appName + "_" + System.Guid.NewGuid().ToString("N");
			string userName = "";
			string password = "";
			string domain = "";
	
			// which K2 should we connect to?
			Console.Write("Connect to AppService on which system? [" + Dns.GetHostName() + "]: ");
			string host = Console.ReadLine();
			if (null == host || 0 == host.Length)
				host = Dns.GetHostName();
	
			// create an AppServerMgr proxy object
			appServerMgrProxy = new AppServerMgrProxy();
	
			// set the host name of the K2 server
			appServerMgrProxy.SetHost(host);
	
			// pass the credentials info
			appServerMgrProxy.SetUserCredentials(userName, password, domain, false);
	
			// connect to the AppServerMgr
			if ( !appServerMgrProxy.Connect() )
			{
				appServerMgrProxy = null;
				Console.WriteLine("ERROR: Could not connect to AppService on " + host + ".");
				return;
			}
	
			// create an AppServer
			bool newConnection = false;
			IAppServer iappServer = appServerMgrProxy.CreateAppServer(suiteName, 
				appName, out newConnection);
	
	
			////////////////////////////////////////////////////////////////
			// STEP 1: Get all information about the clips in a bin.
			// Use these calls for building up your clip cache data model.
			///////////////////////////////////////////////////////////////
	
			Console.WriteLine("Get all asset data from bin V:\\default...\n");
	
			// get a MediaMgr object for asset management
			IMediaMgr mediaMgr = iappServer.CreateMediaMgr(appName);
	
			// enumerate the assets in the v:\default bin. this returns a cookie and
			// a count that represents the number of assets in the bin
			// NOTE: EnumerateAssets is a very expensive call and should be used sparingly
			// Abusing this call against bins with large numbers of clips could cause slows downs
			// and/or unexpected behavior.  Read link  below for more information:
			// http://www.gvgdevelopers.com/concrete/apis/appserver_api/examples/programming_tips/ 
			int count = 0;
			int cookie = mediaMgr.EnumerateAssets("V:", "default", ref count);
	 
	 
	 		// when collecting the asset data, you should iterate thru the results
	 		// in chunks. this prevents a call from blocking for a long time as it
	 		// collects data for all assets. 512 assets is a good size to use. the
	 		// code below loop continually in blocks of 512 assets until all data
	 		// is retrieved.
			int maxCount = 512;
	
			int iteration = 0;
			object dataObj = null;

			// setup an array of property names. These are the properties you can get using
			// GetResultProperty.
			// See http://www.gvgdevelopers.com/K2DevGuide/K2DevGuide.html#%5B%5BAsset%20properties%5D%5D
			// asset property descriptions.			
			
			string[] propertyName = {"uri", "name", "assettype", "created", "modified", "attributes1", 
				"attributes2", "videoformat", "videocompressiontype", "firsttimecodemask", 
				"lengthstr", "maxlength", "markin", "markout", "markinstr", "markoutstr", 
				"dropframe", "locked", "hidef" };
				
			// setup a query of properties to get for each clip
			string query = "uri+name+assettype+created+modified+attributes1+attributes2+videoformat+videocompressiontype+firsttimecodemask+lengthstr+maxlength+markin+markout+markinstr+markoutstr+dropframe+locked+hidef";

			// loop thru all assets			
			count = maxCount;
			while (count == maxCount)
			{
				// query the results for properties. do this for up to 512 clips at a time
				mediaMgr.GetResultProperty( cookie, query, iteration * maxCount, maxCount, out count, out dataObj);

				// we get back an array (clip) of arrays (clip properties).
				// get the array of clips
				object[] clipArray = (object[]) dataObj;				
				foreach (object clip in clipArray)
				{
					// get the array of properties for each clip
					object[] propertyArray = (object[]) clip;
					for (int k=0; k<propertyArray.Length; k++)
					{
						Console.WriteLine( propertyName[k] + ": " + propertyArray[k] );
					}
					Console.WriteLine();
				}

				iteration++;
			}
	
	
			////////////////////////////////////////////////////////////
			// STEP 2. After you have built your clip cache data model, 
			// in order to keep your cache current, the only thing you 
			// need to do is get updates of what has changed. The loop
			// below polls for changes every 0.5 second.
			////////////////////////////////////////////////////////////
			// Read http://www.gvgdevelopers.com/concrete/apis/appserver_api/examples/programming_tips/ for more details.
			
			Console.WriteLine("Get all clip change data...\n");
	
			int changeCount = 0;			
			string xmlData = "";
			while ( true )
			{
				mediaMgr.GetXmlChanges(512, ref changeCount, out xmlData);
				if ( xmlData.Length > 0)
					Console.WriteLine(xmlData);
	
				Thread.Sleep(500);
			}
			
	
			// cleanup
			mediaMgr.CloseResults(cookie);
			mediaMgr.Dispose();	
			iappServer.CloseConnection();
		}
		catch (Exception e)
		{
			Console.WriteLine(e);
		}
	}
}