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/**
 * ============LICENSE_START=======================================================
 * org.onap.aai
 * ================================================================================
 * Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
 * ================================================================================
 * 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.
 * ============LICENSE_END=========================================================
 */
package org.onap.aai.introspection.tools;

import org.onap.aai.introspection.Introspector;
import org.onap.aai.schema.enums.PropertyMetadata;

import java.util.Map;
import java.util.UUID;

/**
 * <b>CreateUUID</b> is an issue resolver that is responsible
 * for looking to check if the property that is missing has
 * the metadata autoGenerateUuid associated to it in the oxm
 * As if that is found, then it will automatically resolve the
 * issue by generating a uuid and setting that value to that property
 *
 * If this is needed for a specific property that you need
 * then you need to add the following xml code in the oxm
 *
 * <pre>
 *     {@code
 *      <xml-element java-attribute="myElementProp" name="my-element-prop" type="java.lang.String">
 *      <xml-properties>
 *          <xml-property name="autoGenerateUuid" value="true" />
 *      </xml-properties>
 *     }
 * </pre>
 */
public class CreateUUID implements IssueResolver {

	/**
	 * Resolves the issue by checking if the issue type is missing key prop
	 * and if it is it will retrieve the introspector associated with the issue
	 * then gets the metadata associated to that specific property
	 * and if it contains the auto generate meta property and if it does
	 * then it will fix it by setting that property value to generated uuid
	 *
	 * @param issue the issue with the details associated to the problem
	 * @return true if the issue has been successfully resolved
	 *          false otherwise
	 */
	@Override
	public boolean resolveIssue(Issue issue) {

		Introspector obj = issue.getIntrospector();
		if (issue.getType().equals(IssueType.MISSING_KEY_PROP)) {
			Map<PropertyMetadata, String> metadata = obj.getPropertyMetadata(issue.getPropName());
			if (metadata.containsKey(PropertyMetadata.AUTO_GENERATE_UUID) && metadata.get(PropertyMetadata.AUTO_GENERATE_UUID).equals("true")) {
				obj.setValue(issue.getPropName(), UUID.randomUUID().toString());
				return true;
			}
		}
		
		return false;
	}

}