/*****************************************************************************
 * Copyright (c) 2014 CEA LIST.
 *
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *  Patrick Tessier (CEA LIST) patrick.tessier@cea.fr - Initial API and implementation
 *
 *****************************************************************************/
package org.eclipse.papyrus.requirements.reqif.integration.command;

import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.runtime.Status;
import org.eclipse.emf.common.notify.AdapterFactory;
import org.eclipse.emf.common.util.BasicDiagnostic;
import org.eclipse.emf.common.util.Diagnostic;
import org.eclipse.emf.common.util.DiagnosticChain;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EPackage;
import org.eclipse.emf.ecore.util.Diagnostician;
import org.eclipse.emf.edit.domain.AdapterFactoryEditingDomain;
import org.eclipse.emf.edit.domain.EditingDomain;
import org.eclipse.emf.edit.provider.IItemLabelProvider;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.emf.workspace.util.WorkspaceSynchronizer;
import org.eclipse.gmf.runtime.common.core.command.CommandResult;
import org.eclipse.gmf.runtime.emf.commands.core.command.AbstractTransactionalCommand;
import org.eclipse.papyrus.infra.emf.utils.EMFHelper;
import org.eclipse.papyrus.uml.profile.Activator;
import org.eclipse.papyrus.uml.tools.profile.definition.PapyrusDefinitionAnnotation;
import org.eclipse.papyrus.uml.tools.profile.definition.ProfileRedefinition;
import org.eclipse.uml2.uml.Package;
import org.eclipse.uml2.uml.Profile;
import org.eclipse.uml2.uml.util.UMLUtil;
import org.eclipse.uml2.uml.util.UMLUtil.Profile2EPackageConverter;
import org.eclipse.uml2.uml.util.UMLUtil.UML2EcoreConverter;


/**
 * This command is used to define a profile
 *This class  is a copy of papyrus because it is not accessible
 *
 */
public class DefineProfileCommand extends AbstractTransactionalCommand {

	/**
	 * the {@link PapyrusDefinitionAnnotation}
	 */
	private PapyrusDefinitionAnnotation papyrusAnnotation;

	/**
	 * the profile to define
	 */
	private Profile rootProfile;

	private boolean saveConstraint;

	/**
	 *
	 * Constructor.
	 *
	 * @param domain
	 * @param papyrusAnnotation
	 * @param rootProfile
	 * @param viewer
	 * @param saveConstraint
	 */
	public DefineProfileCommand(TransactionalEditingDomain domain, PapyrusDefinitionAnnotation papyrusAnnotation, Profile rootProfile, boolean saveConstraint) {
		super(domain, "DefineProfileCommand", null); //$NON-NLS-1$
		this.rootProfile = rootProfile;
		this.papyrusAnnotation = papyrusAnnotation;
		this.saveConstraint = saveConstraint;
	}


	/**
	 * Define this package if it is a profile and its sub-profiles
	 *
	 * @param thePackage
	 *        the package to define (if it is a profile)
	 * @param saveConstraintInDef
	 * @return the list of Epackage that are definition of the profile
	 */
	public static List<EPackage> defineProfiles(Package thePackage, boolean saveConstraintInDef) {
		Map<String, String> options = new HashMap<String, String>();

		options.put(Profile2EPackageConverter.OPTION__ECORE_TAGGED_VALUES, UMLUtil.OPTION__PROCESS);
		options.put(Profile2EPackageConverter.OPTION__DERIVED_FEATURES, UMLUtil.OPTION__REPORT);
		options.put(Profile2EPackageConverter.OPTION__DUPLICATE_FEATURE_INHERITANCE, UMLUtil.OPTION__PROCESS);
		options.put(Profile2EPackageConverter.OPTION__DUPLICATE_FEATURES, UMLUtil.OPTION__PROCESS);
		options.put(Profile2EPackageConverter.OPTION__DUPLICATE_OPERATIONS, UMLUtil.OPTION__REPORT);
		options.put(Profile2EPackageConverter.OPTION__DUPLICATE_OPERATION_INHERITANCE, UMLUtil.OPTION__REPORT);
		options.put(Profile2EPackageConverter.OPTION__REDEFINING_OPERATIONS, UMLUtil.OPTION__REPORT);
		options.put(Profile2EPackageConverter.OPTION__REDEFINING_PROPERTIES, UMLUtil.OPTION__REPORT);
		options.put(Profile2EPackageConverter.OPTION__SUBSETTING_PROPERTIES, UMLUtil.OPTION__REPORT);
		options.put(Profile2EPackageConverter.OPTION__UNION_PROPERTIES, UMLUtil.OPTION__PROCESS);
		options.put(UML2EcoreConverter.OPTION__SUPER_CLASS_ORDER, UMLUtil.OPTION__REPORT);
		options.put(Profile2EPackageConverter.OPTION__ANNOTATION_DETAILS, UMLUtil.OPTION__REPORT);

		//Generate constraints for the validation
		String handleConstraints = saveConstraintInDef ? UMLUtil.OPTION__PROCESS : UMLUtil.OPTION__IGNORE;
		options.put(Profile2EPackageConverter.OPTION__INVARIANT_CONSTRAINTS, handleConstraints);
		options.put(Profile2EPackageConverter.OPTION__VALIDATION_DELEGATES, handleConstraints);
		options.put(Profile2EPackageConverter.OPTION__INVOCATION_DELEGATES, handleConstraints);
		options.put(UML2EcoreConverter.OPTION__OPERATION_BODIES, handleConstraints);
		//

		options.put(Profile2EPackageConverter.OPTION__COMMENTS, UMLUtil.OPTION__IGNORE);
		options.put(Profile2EPackageConverter.OPTION__FOREIGN_DEFINITIONS, UMLUtil.OPTION__PROCESS);

		options.put(Profile2EPackageConverter.OPTION__UNTYPED_PROPERTIES, UMLUtil.OPTION__PROCESS); //Closer to the UML semantics of untyped properties

		List<EPackage> result = new LinkedList<EPackage>();

		// we want to define
		if(thePackage instanceof Profile) {
			EPackage profileDefinition = ((Profile)thePackage).define(options, null, null);
			result.add(profileDefinition);
		}

		Iterator<Package> it = thePackage.getNestedPackages().iterator();
		while(it.hasNext()) {
			Package p = it.next();
			List<EPackage> profileDefinitions = defineProfiles(p, saveConstraintInDef);
			result.addAll(profileDefinitions);
		}

		return result;
	}

	/**
	 *
	 *
	 * @see org.eclipse.gmf.runtime.emf.commands.core.command.AbstractTransactionalCommand#doExecuteWithResult(org.eclipse.core.runtime.IProgressMonitor,
	 *      org.eclipse.core.runtime.IAdaptable)
	 *
	 * @param monitor
	 * @param info
	 * @return
	 * @throws ExecutionException
	 */
	@Override
	protected CommandResult doExecuteWithResult(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {

		List<EPackage> profileDefinitions = defineProfiles(rootProfile, saveConstraint);

		IStatus result;

		//PackageUtil.defineProfiles(rootProfile);
		try {
			ProfileRedefinition.redefineProfile(rootProfile, papyrusAnnotation);
			ProfileRedefinition.cleanProfile(rootProfile);
			//TODO: Validate the new definition

			result = postValidate(profileDefinitions);
		} catch (ExecutionException ex) {
			throw ex;
		} catch (Exception e) {
			throw new ExecutionException("An error occurred during the profile definition", e);
		}

		return new CommandResult(result);
	}

	/**
	 * make a validation after the definition
	 * @param profileDefinitions
	 * @return
	 * @throws ExecutionException
	 */
	protected IStatus postValidate(List<EPackage> profileDefinitions) throws ExecutionException {

		EditingDomain domain = EMFHelper.resolveEditingDomain(rootProfile);
		AdapterFactory adapterFactory = domain instanceof AdapterFactoryEditingDomain ? ((AdapterFactoryEditingDomain)domain).getAdapterFactory() : null;
		Diagnostician diagnostician = createDiagnostician(adapterFactory, new NullProgressMonitor());
		diagnostic = diagnostician.createDefaultDiagnostic(rootProfile);
		Map<Object, Object> context = diagnostician.createDefaultContext();

		for(EPackage ePackage : profileDefinitions) {
			diagnostician.validate(ePackage, diagnostic, context);
		}

		if(diagnostic.getSeverity() == Diagnostic.ERROR) {
			return new Status(IStatus.ERROR, Activator.PLUGIN_ID, "The defined profile is invalid");
		}

		if(diagnostic.getSeverity() == Diagnostic.WARNING) {
			return new Status(IStatus.WARNING, Activator.PLUGIN_ID, "The profile has been successfully defined");
		}

		return Status.OK_STATUS;
	}

	protected BasicDiagnostic diagnostic;

	/**
	 * 
	 * @return a diagnostic useful to run the EMF validation
	 */
	public Diagnostic getDiagnostic() {
		return diagnostic;
	}

	/**
	 * create a diagnostic
	 * @param adapterFactory
	 * @param progressMonitor
	 * @return
	 */
	protected Diagnostician createDiagnostician(final AdapterFactory adapterFactory, final IProgressMonitor progressMonitor) {
		return new Diagnostician() {

			@Override
			public String getObjectLabel(EObject eObject) {
				if(adapterFactory != null && !eObject.eIsProxy()) {
					IItemLabelProvider itemLabelProvider = (IItemLabelProvider)adapterFactory.adapt(eObject, IItemLabelProvider.class);
					if(itemLabelProvider != null) {
						return itemLabelProvider.getText(eObject);
					}
				}
				return super.getObjectLabel(eObject);
			}

			@Override
			public boolean validate(EClass eClass, EObject eObject, DiagnosticChain diagnostics, Map<Object, Object> context) {
				progressMonitor.worked(1);
				return super.validate(eClass, eObject, diagnostics, context);
			}
		};
	}

	/**
	 *
	 * @see org.eclipse.gmf.runtime.emf.commands.core.command.AbstractTransactionalCommand#getAffectedFiles()
	 *
	 * @return the list of affect files
	 */
	@Override
	public List<IFile> getAffectedFiles() {
		IFile f = WorkspaceSynchronizer.getFile(rootProfile.eResource());
		return f != null ? Collections.<IFile> singletonList(f) : Collections.<IFile> emptyList();
	}
}