/*

	<? Copyright Ranjeet Chakraborty 29/05/2001 ranjeetc@hotmail.com ?> 
	A basic C# Component that provides 2 helper classes 
	dispCOMWrapper --> Helper class that uses reflection to make late bound calls on a component's default interface.
	COMPlusAdminHelper --> Wraps the functionality that talks to the COM+ Admin objects, not all of its methods are 
				used though. Viz: deleteComPlusApp which could delete an app from your system given the 
				app's name as a parameter.(USE with extreme caution !)

*/

namespace COMHelperSpace
{
using System;
using System.Xml;
using System.Reflection;

	public 
	class dispCOMWrapper
	{
		private Object m_oCOM;
		private Type m_Type;
		public dispCOMWrapper (Object o)
		{
			this.m_oCOM = o;
			this.m_Type = this.m_oCOM.GetType();
		}
		public dispCOMWrapper (String strProgId)
		{
			Type typ;
			typ = Type.GetTypeFromProgID(strProgId);
			this.m_oCOM = Activator.CreateInstance(typ);
			this.m_Type = this.m_oCOM.GetType();
		}
		public Object getProperty(String strPropName)
		{
			Object oPropValue = this.m_Type.InvokeMember(strPropName,
									BindingFlags.InvokeMethod|BindingFlags.GetProperty,
									null,
									this.m_oCOM,
									new object [] {}
									);
			return oPropValue;
		}
		public Object getProperty(String strPropName,String strPropType )
		{
			Object oPropValue = this.m_Type.InvokeMember(strPropName,
									BindingFlags.InvokeMethod|BindingFlags.GetProperty,
									null,
									this.m_oCOM,
									new object [] {strPropType}
									);
			return oPropValue;
		}

		public Object getProperty(String strPropName,int iPropType )
		{
			Object oPropValue = this.m_Type.InvokeMember(strPropName,
									BindingFlags.InvokeMethod|BindingFlags.GetProperty,
									null,
									this.m_oCOM,
									new object [] {iPropType}
									);
			return oPropValue;
		}

		public void setProperty(String strPropName, Object [] args)
		{
			this.m_Type.InvokeMember(strPropName,
									BindingFlags.Default | BindingFlags.SetProperty,
									null,
									this.m_oCOM,
									args
									);
			return;

		}
		public Object callMethod(String strMethodName, Object [] args)
		{
			Object objRetVal = this.m_Type.InvokeMember(strMethodName,
									BindingFlags.Default | BindingFlags.InvokeMethod,
									null,
									this.m_oCOM,
									args
									);
			return objRetVal ;
		}
	}
}

namespace COMAdminHelperSpace
{
using COMHelperSpace;
using System;
using System.Xml;
using System.Reflection;

public 
	class COMPlusAdminHelper
	{
		private dispCOMWrapper m_oCatalog;
		private dispCOMWrapper m_oDispColApps;

		public COMPlusAdminHelper()
		{
			m_oCatalog = new dispCOMWrapper("COMAdmin.COMAdminCatalog");
			m_oDispColApps = new dispCOMWrapper(m_oCatalog.callMethod("GetCollection" , new Object [] {"Applications"} ));
		}

		public bool deleteComPlusApp(String strAppName)
		{
			bool blnRetVal = false;
			m_oDispColApps.callMethod("Populate",new object [] {});
			int j = (int)m_oDispColApps.getProperty("Count"), i = 0;
			while (i < j)
			{
				Object objTempApp = m_oDispColApps.getProperty("item", i) ;
				dispCOMWrapper oDispTempApp = new dispCOMWrapper(objTempApp);
				//Console.WriteLine(oDispTempApp.getProperty("Name").ToString());
				//Console.WriteLine(oDispTempApp.getProperty("Value").ToString());
				if (oDispTempApp.getProperty("Name").ToString() == strAppName)
				{
					m_oDispColApps.callMethod("Remove",new object [] {i});
					m_oDispColApps.callMethod("SaveChanges",new object [] {});
					blnRetVal = true;
					return blnRetVal;
				}
				i = i + 1;
			}
			return blnRetVal;
		}

		public void installComponent(String strAppName, String strComponentPath)
		{
			m_oCatalog.callMethod("InstallComponent" , new Object [] {strAppName, strComponentPath, "", ""} );
		}

		public void GenerateReport()
		{
			XmlDocument oDocNew = new XmlDocument();
			/*Create the main root Applications Element*/
			oDocNew.LoadXml("<?xml version='1.0'?><Applications></Applications>");


			XmlDocument oDoc = new XmlDocument();
			oDoc.Load ("ComPlusPropertyMap.xml");
			DocumentNavigator nav = new DocumentNavigator(oDoc);
			
			m_oDispColApps.callMethod("Populate",new object [] {});
			int j = (int)m_oDispColApps.getProperty("Count"), i = 0;
			while (i < j)
			{
				Object objTempApp = m_oDispColApps.getProperty("item", i) ;
				dispCOMWrapper oDispTempApp = new dispCOMWrapper(objTempApp);

				nav.Select ("/PropertyMap/Application");
				nav.MoveToNextSelected();
				nav.Select ("PropName");

				XmlNode oAppNode;		/*Create the Application for every COM+ App*/
				oAppNode = oDocNew.CreateNode (XmlNodeType.Element,"Application","");
				XmlElement oRootElement = oDocNew.DocumentElement; 
				XmlNode oNewAddedAppNode = oRootElement.AppendChild (oAppNode);
				XmlNamedNodeMap oNamedNodeMapForApps = oAppNode.Attributes; 
				XmlAttribute oNewAttribute;

				while (nav.MoveToNextSelected())
				{
					String strAttribName = nav.InnerText.ToString(), strAttribValue;
					oNewAttribute = oDocNew.CreateAttribute(strAttribName);
					strAttribValue = oDispTempApp.getProperty("Value",strAttribName).ToString();  
					oNewAttribute.Value = strAttribValue;
					oNamedNodeMapForApps.SetNamedItem(oNewAttribute); 
				}
				//Console.WriteLine(oDocNew.OuterXml.ToString()); 

				dispCOMWrapper m_oDispColComps = new dispCOMWrapper(m_oDispColApps.callMethod("GetCollection" , new Object [] {"Components", oDispTempApp.getProperty("Key")} ));
				m_oDispColComps.callMethod("Populate",new object [] {});
				int k = (int)m_oDispColComps.getProperty("Count"), l = 0;
				while(l < k)
				{
					Object objTempComp = m_oDispColComps.getProperty("item", l) ;
					dispCOMWrapper oDispTempComp = new dispCOMWrapper(objTempComp);
					nav.Select ("/PropertyMap/Component");
					nav.MoveToNextSelected();
					nav.Select ("PropName");

					XmlNode oCompNode;		/*Create the Component element for every COM+ App*/
					oCompNode = oDocNew.CreateNode (XmlNodeType.Element,"Component","");
					XmlNode oNewAddedCompNode =  oNewAddedAppNode.AppendChild (oCompNode);
					XmlNamedNodeMap oNamedNodeMapForComps = oCompNode.Attributes; 
					XmlAttribute oNewCompAttribute;
					XmlNode oCompAttribNode;

					while (nav.MoveToNextSelected())
					{
						String strCompAttribName = nav.InnerText.ToString(), strCompAttribValue;
						oCompAttribNode = oDocNew.CreateNode(XmlNodeType.Element,strCompAttribName,"");  
						strCompAttribValue = oDispTempComp.getProperty("Value",strCompAttribName).ToString();  
						oCompAttribNode.InnerText = strCompAttribValue;
						oNewAddedCompNode.AppendChild (oCompAttribNode);
					}
					l = l + 1;
				}
				i = i + 1;
			}
			oDocNew.Save ("CompPlusReport.xml");
		}

	}

}