/*
 * Copyright 2011 the original author or authors.
 *
 * 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.codehaus.groovy.eclipse.dsl.inferencing.suggestions;

import org.codehaus.groovy.eclipse.dsl.inferencing.suggestions.InferencingSuggestionsManager.ProjectSuggestions;
import org.eclipse.core.resources.IProject;

/**
 * 
 * @author Nieraj Singh
 * @created 2011-09-15
 */
public class EditSuggestionOperation extends AbstractCreateOperation {

    /**
     * None of the arguments can be null.
     */
    public EditSuggestionOperation(IProject project, IBaseGroovySuggestion suggestionContext) {
        super(project, suggestionContext);
    }

    protected ValueStatus run(SuggestionDescriptor descriptor) {
        // Must be able to handle declaring type edits
        IBaseGroovySuggestion baseSuggestion = getContext();
        IGroovySuggestion editedSuggestion = null;
        if (baseSuggestion instanceof IGroovySuggestion) {
            IGroovySuggestion existingSuggestion = (IGroovySuggestion) baseSuggestion;
            GroovySuggestionDeclaringType declaringType = existingSuggestion.getDeclaringType();
            if (!declaringType.getName().equals(descriptor.getDeclaringTypeName())) {
                declaringType.removeSuggestion(existingSuggestion);
                ProjectSuggestions projectSuggestions = InferencingSuggestionsManager.getInstance().getSuggestions(getProject());
                if (projectSuggestions != null) {
                    // if declaring type does not have any more
                    // suggestions, remove it.
                    if (declaringType.getSuggestions().isEmpty()) {
                        projectSuggestions.removeDeclaringType(declaringType);
                    }

                    // Add to the new declaring type
                    editedSuggestion = projectSuggestions.addSuggestion(descriptor);
                }
            } else {
                editedSuggestion = declaringType.replaceSuggestion(descriptor, existingSuggestion);
            }
        }

        return ValueStatus.getValidStatus(editedSuggestion);
    }

}