/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

package com.nokia.cdt.internal.debug.launch.wizard;

import java.util.ArrayList;

import java.util.List;

import org.eclipse.core.resources.IProject;

import org.eclipse.core.runtime.CoreException;

import org.eclipse.core.runtime.IConfigurationElement;

import org.eclipse.core.runtime.IExtension;

import org.eclipse.core.runtime.IExtensionPoint;

import org.eclipse.core.runtime.IExtensionRegistry;

import org.eclipse.core.runtime.IPath;

import org.eclipse.core.runtime.IStatus;

import org.eclipse.core.runtime.Platform;

import org.eclipse.debug.core.DebugPlugin;

import org.eclipse.debug.core.ILaunchConfigurationWorkingCopy;

import org.eclipse.jface.viewers.IStructuredSelection;

import org.eclipse.jface.wizard.Wizard;

import org.eclipse.jface.wizard.WizardDialog;

import org.eclipse.swt.widgets.Shell;

import org.eclipse.ui.IWorkbench;

import com.nokia.carbide.cpp.ui.CarbideUIPlugin;

import com.nokia.carbide.cpp.ui.ICarbideSharedImages;

import com.nokia.cdt.debug.cw.symbian.SettingsData;

import com.nokia.cdt.internal.debug.launch.LaunchPlugin;

import com.nokia.cpp.internal.api.utils.core.Check;

import com.nokia.cpp.internal.api.utils.core.Logging;

import com.nokia.cpp.internal.api.utils.core.Pair;

public class LaunchCreationWizard extends Wizard {

	private MainExecutableSelectionWizardPage fBinarySelectionPage;

	private LaunchWizardSummaryPage fEmulationSummaryPage;

	private LaunchCategorySelectionPage fCategorySelectionPage;

	private LaunchWizardSelectionPage fWizardSelectionPage;

    private BuildOptionsSelectionPage fBuildOptionsSelectionPage;

	private ILaunchConfigurationWorkingCopy launchConfig;

	private boolean shouldOpenLaunchDialog;

	private IProject project;

	private String configurationName;

	private List<AbstractLaunchWizard> wizards = new ArrayList<AbstractLaunchWizard>();

	public LaunchCreationWizard(IProject project, String configurationName, 

										List<IPath> mmps, List<IPath> exes, IPath defaultExecutable,  

										boolean isEmulation, boolean emulatorOnly, String mode) throws Exception {

		this.project = project;

		this.configurationName = configurationName;

		loadWizards(mmps, exes, defaultExecutable, mode);

		// show the binary selection page as only page in main wizard if emulation, 

		// otherwise it will be shown as needed by non-emulation wizards

		if (isEmulation)  {

			fEmulationSummaryPage = new LaunchWizardSummaryPage(configurationName);

			fBuildOptionsSelectionPage = new BuildOptionsSelectionPage();

			Check.checkState(exes.size() > 0);

			IPath emulatorPath = getEmulatorPathFromExePath(exes.get(0));

			fBinarySelectionPage = new MainExecutableSelectionWizardPage(mmps, exes, defaultExecutable, true, emulatorPath, emulatorOnly, fEmulationSummaryPage);

		}

		else {

			fCategorySelectionPage = new LaunchCategorySelectionPage(this);

	        fWizardSelectionPage = new LaunchWizardSelectionPage(this, mmps, exes, defaultExecutable, project, configurationName, mode);

		}

	}

	public boolean performFinish() {

		if (fBinarySelectionPage != null) {

			try {

				Pair<IPath, IPath> exeAndMmp = fBinarySelectionPage.getSelectedExeMmpPair();

				launchConfig = DebugPlugin.getDefault().getLaunchManager().getLaunchConfigurationType(LaunchPlugin.EMULATION_LAUNCH_TYPE).newInstance(null, configurationName);

				SettingsData.setDefaults(launchConfig, SettingsData.LaunchConfig_Emulator, project, exeAndMmp.second, exeAndMmp.first);

				fBuildOptionsSelectionPage.updateConfiguration(launchConfig);

				IPath processToLaunchTargetPath = fBinarySelectionPage.getProcessToLaunchTargetPath();	

				if (processToLaunchTargetPath != null)

	    			SettingsData.setProcessToLaunch(launchConfig, processToLaunchTargetPath);

				shouldOpenLaunchDialog = fEmulationSummaryPage.shouldOpenLaunchConfigurationDialog();

			} catch (CoreException e) {

				LaunchPlugin.log(e);

			}

		}

		if (fWizardSelectionPage != null) {

			AbstractLaunchWizard wizard = ((AbstractLaunchWizard) fWizardSelectionPage.getSelectedWizard());

			wizard.performFinish();

			Pair<IPath, IPath> exeAndMmp = wizard.getSelectedExeMmpPair();

			IPath processToLaunchTargetPath = wizard.getProcessToLaunchTargetPath();

	    	launchConfig = 

	    		fWizardSelectionPage.getSelectedWizard().createLaunchConfiguration(exeAndMmp.second, exeAndMmp.first, processToLaunchTargetPath);

	    	shouldOpenLaunchDialog = fWizardSelectionPage.getSelectedWizard().shouldOpenLaunchConfigurationDialog();

		}

		return true;

    }

    public void addPages() {

    	if (fBinarySelectionPage != null) {

    		addPage(fBinarySelectionPage);

    		addPage(fBuildOptionsSelectionPage);

    		addPage(fEmulationSummaryPage);

    	} 

    	else if (fWizardSelectionPage != null) {

            addPage(fCategorySelectionPage);

            addPage(fWizardSelectionPage);

    	}

    }

    @Override

	public boolean needsPreviousAndNextButtons() {

		return true;

	}

	public void init(IWorkbench workbench, IStructuredSelection selection) {

        setWindowTitle(Messages.getString("LaunchCreationWizard.0")); //$NON-NLS-1$

		setDefaultPageImageDescriptor(CarbideUIPlugin.getSharedImages().getImageDescriptor(ICarbideSharedImages.IMG_NEW_LAUNCH_CONFIG_WIZARD_BANNER));

    }

    public ILaunchConfigurationWorkingCopy getLaunchConfiguration() {

    	return launchConfig;

    }

	public int openWizard(Shell shell) {

		WizardDialog dialog = new WizardDialog(shell, this);

		dialog.create();

		return dialog.open();

	}

	public static IPath getEmulatorPathFromExePath(IPath pathToExe) {

		IPath path = pathToExe.removeLastSegments(1);

		path = path.append("epoc.exe"); //$NON-NLS-1$

		if (path.toFile().exists())

			return path;

		return null;

	}

	public boolean shouldOpenLaunchConfigurationDialog() {

		return shouldOpenLaunchDialog;

	}

	public String getSelectedCategoryId() {

		return fCategorySelectionPage.getSelectedCategoryId();

	}

	public List<Wizard> getWizardsForCategory(String categoryId) {

		List<Wizard> wizardsInCatgegory = new ArrayList<Wizard>();

		for (AbstractLaunchWizard wizard : wizards) {

			if (wizard.supportsCategory(categoryId)) {

				wizardsInCatgegory.add(wizard);

			}

		}

		return wizardsInCatgegory;

	}

	private void loadWizards(List<IPath> mmps, List<IPath> exes, IPath defaultExecutable, String mode) {

		AppTRKLaunchWizard appTRKWizard = new AppTRKLaunchWizard(mmps, exes, defaultExecutable, project, configurationName);

		if (appTRKWizard.supportsMode(mode)) {

			appTRKWizard.addPages();

			wizards.add(appTRKWizard);

		}

		SystemTRKLaunchWizard sysTRKWizard = new SystemTRKLaunchWizard(mmps, exes, defaultExecutable, project, configurationName);

		if (sysTRKWizard.supportsMode(mode)) {

			sysTRKWizard.addPages();

			wizards.add(sysTRKWizard);

		}

		Trace32LaunchWizard trace32Wizard = new Trace32LaunchWizard(mmps, exes, defaultExecutable, project, configurationName); 

		if (trace32Wizard.supportsMode(mode)) {

			trace32Wizard.addPages();

			wizards.add(trace32Wizard);

		}

		AttachTRKLaunchWizard attachTRKWizard = new AttachTRKLaunchWizard(mmps, exes, defaultExecutable, project, configurationName);

		if (attachTRKWizard.supportsMode(mode)) {

			attachTRKWizard.addPages();

			wizards.add(attachTRKWizard);

		}

		// load any wizard extensions

		IExtensionRegistry extensionRegistry = Platform.getExtensionRegistry();

		IExtensionPoint extensionPoint = extensionRegistry.getExtensionPoint(LaunchPlugin.PLUGIN_ID + ".launchWizardExtension"); //$NON-NLS-1$

		IExtension[] extensions = extensionPoint.getExtensions();

		for (int i = 0; i < extensions.length; i++) {

			IExtension extension = extensions[i];

			IConfigurationElement[] elements = extension.getConfigurationElements();

			Check.checkContract(elements.length == 1);

			IConfigurationElement element = elements[0];

			boolean failed = false;

			try {

				Object extObject = element.createExecutableExtension("class"); //$NON-NLS-1$

				if (extObject instanceof ILaunchWizardContributor) {

					AbstractLaunchWizard wizard = ((ILaunchWizardContributor)extObject).getWizard(mmps, exes, defaultExecutable, project, configurationName);

					if (wizard.supportsMode(mode)) {

						wizard.addPages();

						wizards.add(wizard);

					}

				} else {

					failed = true;

				}

			} 

			catch (CoreException e) {

				failed = true;

			}

			if (failed) {

				LaunchPlugin.log(Logging.newStatus(LaunchPlugin.getDefault(), 

						IStatus.ERROR,

						"Unable to load launchWizardExtension extension from " + extension.getContributor().getName()));

			}

		}

	}

}