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/*
 * Copyright 2020 The Context Mapper Project Team
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.contextmapper.dsl.ide.actions.impl;

import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;

import org.contextmapper.dsl.cml.CMLResource;
import org.contextmapper.dsl.contextMappingDSL.BoundedContext;
import org.contextmapper.dsl.contextMappingDSL.ContextMappingModel;
import org.contextmapper.dsl.ide.actions.CMLCodeAction;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.lsp4j.Command;
import org.eclipse.xtext.EcoreUtil2;

import com.google.common.collect.Lists;

/**
 * Action that calls the "Merge Bounded Contexts" refactoring.
 * 
 * @author Stefan Kapferer
 *
 */
public class MergeBoundedContextsAction implements CMLCodeAction {

	private CMLResource cmlResource;
	private List editorSelection;

	public MergeBoundedContextsAction(CMLResource cmlResource, List editorSelection) {
		this.cmlResource = cmlResource;
		this.editorSelection = editorSelection;
	}

	@Override
	public boolean isApplicable() {
		Set boundedContexts = getSelectedBoundedContexts();
		if (boundedContexts.isEmpty() || boundedContexts.size() > 1)
			return false;

		EObject root = EcoreUtil2.getRootContainer(boundedContexts.iterator().next());
		if (!(root instanceof ContextMappingModel))
			return false;

		ContextMappingModel model = (ContextMappingModel) root;
		return model.getBoundedContexts().size() > 1;
	}

	@Override
	public Command getCommand() {
		BoundedContext firstContext = getSelectedBoundedContext();
		ContextMappingModel model = (ContextMappingModel) EcoreUtil2.getRootContainer(firstContext);
		List