package com.nokia.carbide.cpp.pi.ipc;

import java.io.File;

import java.io.IOException;

import java.net.URL;

import java.util.HashMap;

import java.util.Map;

import org.eclipse.core.runtime.FileLocator;

import org.eclipse.core.runtime.IPath;

import org.eclipse.core.runtime.Path;

import org.eclipse.swt.widgets.Event;

import org.osgi.framework.Bundle;

import org.osgi.framework.BundleContext;

import com.nokia.carbide.cpp.internal.pi.analyser.NpiInstanceRepository;

import com.nokia.carbide.cpp.internal.pi.analyser.ProfileVisualiser;

import com.nokia.carbide.cpp.internal.pi.model.GenericTrace;

import com.nokia.carbide.cpp.internal.pi.model.ParsedTraceData;

import com.nokia.carbide.cpp.internal.pi.plugin.model.AbstractPiPlugin;

import com.nokia.carbide.cpp.internal.pi.plugin.model.IClassReplacer;

import com.nokia.carbide.cpp.internal.pi.plugin.model.IEventListener;

import com.nokia.carbide.cpp.internal.pi.plugin.model.IFinalizeTrace;

import com.nokia.carbide.cpp.internal.pi.plugin.model.ITrace;

import com.nokia.carbide.cpp.internal.pi.plugin.model.IVisualizable;

import com.nokia.carbide.cpp.internal.pi.visual.GraphDrawRequest;

import com.nokia.carbide.cpp.pi.editors.PIPageEditor;

import com.nokia.carbide.cpp.pi.internal.ipc.IpcSample;

import com.nokia.carbide.cpp.pi.internal.ipc.IpcTrace;

import com.nokia.carbide.cpp.pi.internal.ipc.IpcTraceParser;

import com.nokia.carbide.cpp.pi.peccommon.PecCommonGuiManager;

import com.nokia.carbide.cpp.pi.visual.IGenericTraceGraph;

/**

 * The activator class controls the plug-in life cycle

 */

public class IpcPlugin extends AbstractPiPlugin implements ITrace, IEventListener, IVisualizable, IFinalizeTrace, IClassReplacer {

	/** number of graphs created (one on each page)*/

	public static final int GRAPH_COUNT = 3;

	/** The plug-in ID */

	public static final String PLUGIN_ID = "com.nokia.carbide.cpp.pi.ipc"; //$NON-NLS-1$

	private static final String HELP_CONTEXT_ID = PIPageEditor.PI_ID + ".ipc";  //$NON-NLS-1$

	/** context help id of the main page */

	public static final String HELP_CONTEXT_ID_MAIN_PAGE = HELP_CONTEXT_ID + ".ipcPageContext";  //$NON-NLS-1$

	/** the trace id for PEC traces */

	private static final int PEC_TRACE_ID = 12;

	/** Persistable preference for the performance counter trace draw mode (show single graph or all graphs)  */

	public static final String PECTRACE_DRAWMODE = "com.nokia.carbide.cpp.pi.ipc.drawmode";//$NON-NLS-1$

	/** draw mode for showing all graphs */

	public static final String PECTRACE_DRAWMODE_SHOW_ALL = "ShowAll";//$NON-NLS-1$

	// The shared instance

	private static IpcPlugin plugin;

	/**

	 * The constructor

	 */

	public IpcPlugin() {

		super();

	}

	/*

	 * (non-Javadoc)

	 * @see org.eclipse.ui.plugin.AbstractUIPlugin#start(org.osgi.framework.BundleContext)

	 */

	@Override

	public void start(BundleContext context) throws Exception {

		super.start(context);

		plugin = this;

	}

	/*

	 * (non-Javadoc)

	 * @see org.eclipse.ui.plugin.AbstractUIPlugin#stop(org.osgi.framework.BundleContext)

	 */

	@Override

	public void stop(BundleContext context) throws Exception {

		plugin = null;

		super.stop(context);

	}

	/**

	 * Returns the shared instance

	 *

	 * @return the shared instance

	 */

	public static IpcPlugin getDefault() {

		return plugin;

	}

	/* (non-Javadoc)

	 * @see com.nokia.carbide.cpp.internal.pi.plugin.model.ITrace#getTraceClass()

	 */

	public Class getTraceClass() {

		return IpcTrace.class;

	}

	/* (non-Javadoc)

	 * @see com.nokia.carbide.cpp.internal.pi.plugin.model.ITrace#initialiseTrace(com.nokia.carbide.cpp.internal.pi.model.GenericTrace)

	 */

	public void initialiseTrace(GenericTrace trace) {

		if (!(trace instanceof IpcTrace)){

			throw new IllegalArgumentException();

		}

		IpcTrace parsedTrace = (IpcTrace)trace;

		int samplingInterval = 1; //in milliseconds

		if (parsedTrace.samples.size() > 2) {

			samplingInterval = (int) ((parsedTrace.samples.get(1)).sampleSynchTime - (parsedTrace.samples.get(0)).sampleSynchTime); 

		}

		parsedTrace.setSamplingInterval(samplingInterval);

		NpiInstanceRepository.getInstance().activeUidAddTrace(PLUGIN_ID, trace);

		//create the GUI class which manages the graphs

		int uid = NpiInstanceRepository.getInstance().activeUid();

	}

	/* (non-Javadoc)

	 * @see com.nokia.carbide.cpp.internal.pi.plugin.model.ITrace#getTraceName()

	 */

	public String getTraceName() {

		return "IPC"; //$NON-NLS-1$

	}

	/* (non-Javadoc)

	 * @see com.nokia.carbide.cpp.internal.pi.plugin.model.ITrace#getTraceTitle()

	 */

	public String getTraceTitle() {

		return Messages.IpcPlugin_1;

	}

	/* (non-Javadoc)

	 * @see com.nokia.carbide.cpp.internal.pi.plugin.model.ITrace#getTraceId()

	 */

	public int getTraceId() {

		return PEC_TRACE_ID;

	}

	/* (non-Javadoc)

	 * @see com.nokia.carbide.cpp.internal.pi.plugin.model.ITrace#parseTraceFile(java.io.File)

	 */

	public ParsedTraceData parseTraceFile(File file) throws Exception {

		IpcTraceParser p = new IpcTraceParser();

		ParsedTraceData ptd = p.parse(file);

		return ptd;

	}

	/* (non-Javadoc)

	 * @see com.nokia.carbide.cpp.internal.pi.plugin.model.ITrace#parseTraceFiles(java.io.File[])

	 */

	public ParsedTraceData parseTraceFiles(File[] files) throws Exception {

		throw new UnsupportedOperationException();

	}

	/* (non-Javadoc)

	 * @see com.nokia.carbide.cpp.internal.pi.plugin.model.IEventListener#receiveEvent(java.lang.String, org.eclipse.swt.widgets.Event)

	 */

	public void receiveEvent(String action, Event event) {

		//no-op

	}

	/* (non-Javadoc)

	 * @see com.nokia.carbide.cpp.internal.pi.plugin.model.IVisualizable#arePagesCreated()

	 */

	public boolean arePagesCreated() {

		return false; //PEC traces add graphs to existing pages

	}

	/* (non-Javadoc)

	 * @see com.nokia.carbide.cpp.internal.pi.plugin.model.IVisualizable#createPage(int)

	 */

	public ProfileVisualiser createPage(int index) {

		return null; //PEC traces add graphs to existing pages

	}

	/* (non-Javadoc)

	 * @see com.nokia.carbide.cpp.internal.pi.plugin.model.IVisualizable#getCreatePageCount()

	 */

	public int getCreatePageCount() {

		return 0; //PEC traces don't create pages

	}

	/* (non-Javadoc)

	 * @see com.nokia.carbide.cpp.internal.pi.plugin.model.IVisualizable#getCreatePageIndex(int)

	 */

	public int getCreatePageIndex(int index) {

		throw new UnsupportedOperationException(); //PEC traces don't create pages

	}

	/* (non-Javadoc)

	 * @see com.nokia.carbide.cpp.internal.pi.plugin.model.IVisualizable#getDrawRequest(int)

	 */

	public GraphDrawRequest getDrawRequest(int graphIndex) {

		return null;

	}

	/* (non-Javadoc)

	 * @see com.nokia.carbide.cpp.internal.pi.plugin.model.IVisualizable#getGraphCount()

	 */

	public int getGraphCount() {

		return GRAPH_COUNT;

	}

	/* (non-Javadoc)

	 * @see com.nokia.carbide.cpp.internal.pi.plugin.model.IVisualizable#getLastSample(int)

	 */

	public Integer getLastSample(int graphIndex) {

		IpcTrace trace = (IpcTrace) NpiInstanceRepository.getInstance().activeUidGetTrace(PLUGIN_ID);

		if(trace == null){

			return 0;

		}

		return trace.getLastSampleNumber();

	}

	/* (non-Javadoc)

	 * @see com.nokia.carbide.cpp.internal.pi.plugin.model.IVisualizable#getPageNumber(int)

	 */

	public int getPageNumber(int graphIndex) {

		if (graphIndex == 0) {

			return PIPageEditor.THREADS_PAGE;

		} else if (graphIndex == 1) {

			return PIPageEditor.BINARIES_PAGE;

		} else if (graphIndex == 2) {

			return PIPageEditor.FUNCTIONS_PAGE;

		}

		return PIPageEditor.NEXT_AVAILABLE_PAGE;

	}

	/* (non-Javadoc)

	 * @see com.nokia.carbide.cpp.internal.pi.plugin.model.IVisualizable#getTraceGraph(int)

	 */

	public IGenericTraceGraph getTraceGraph(int graphIndex) {

		int uid = NpiInstanceRepository.getInstance().activeUid();

		if (guiManager != null){

			return guiManager.getTraceGraph(graphIndex, HELP_CONTEXT_ID_MAIN_PAGE);			

		}

		throw new IllegalStateException();

	}

	/* (non-Javadoc)

	 * @see com.nokia.carbide.cpp.internal.pi.plugin.model.IVisualizable#setPageIndex(int, int)

	 */

	public void setPageIndex(int index, int pageIndex) {

		//no-op

	}

	/* (non-Javadoc)

	 * @see com.nokia.carbide.cpp.internal.pi.plugin.model.IVisualizable#setPagesCreated(boolean)

	 */

	public void setPagesCreated(boolean pagesCreated) {

		//no-op

	}

	/**

	 * Returns a File corresponding to the given bundle relative path.

	 * @param path the bundle relative path to resource to locate

	 * @return the File corresponding to the given bundle relative path, or null

	 * @throws IOException

	 */

	public File locateFileInBundle(final String path) throws IOException {

		Bundle myBundle= getDefault().getBundle();

		IPath ppath= new Path(path);

		ppath= ppath.makeRelative();

		URL[] urls= FileLocator.findEntries(myBundle, ppath);

		if(urls.length != 1) {

			return null;

		}

		return new File(FileLocator.toFileURL(urls[0]).getFile());

	}

	/* (non-Javadoc)

	 * @see com.nokia.carbide.cpp.internal.pi.plugin.model.IFinalizeTrace#runOnDispose()

	 */

	public void runOnDispose() {

		// called when editor closes

		// Do any cleanup work here when the editor closes

		int uid = NpiInstanceRepository.getInstance().activeUid();

	}

	/* (non-Javadoc)

	 * @see com.nokia.carbide.cpp.internal.pi.plugin.model.IFinalizeTrace#runOnPartOpened()

	 */

	public void runOnPartOpened() {

		// nothing to do

	}

	/* (non-Javadoc)

	 * @see com.nokia.carbide.cpp.internal.pi.plugin.model.IClassReplacer#getReplacedClass(java.lang.String)

	 */

	public Class getReplacedClass(String className) {

		if (className.startsWith("com.nokia.carbide.cpp.pi.internal.ipc.IpcTrace")){ //$NON-NLS-1$

			return IpcTrace.class;

		} else if (className.startsWith("com.nokia.carbide.cpp.pi.internal.ipc.IpcSample")){//$NON-NLS-1$

			return IpcSample.class;

		}

		return null;

	}

}