/*-
 * ============LICENSE_START=======================================================
 * ONAP - SO
 * ================================================================================
 * Copyright (C) 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.openecomp.mso.openpojo.rules;

import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

import org.hamcrest.Description;
import org.hamcrest.Matcher;
import org.hamcrest.TypeSafeDiagnosingMatcher;
import org.openecomp.mso.logger.MsoLogger;

import com.openpojo.reflection.PojoField;

public class HasAnnotationPropertyWithValueMatcher<T extends PojoField> extends TypeSafeDiagnosingMatcher<T> {
	private MsoLogger logger=MsoLogger.getMsoLogger(MsoLogger.Catalog.GENERAL);
	private final String attribute;
	private final Matcher<?> annotationMatcher;
	private final Class<? extends Annotation> annotationClass;
	public HasAnnotationPropertyWithValueMatcher(Class<? extends Annotation> clazz, String attribute, final Matcher<?> annotationMatcher) {
		this.attribute = attribute;
		this.annotationMatcher = annotationMatcher;
		this.annotationClass = clazz;
	}

	@Override
	protected boolean matchesSafely(T obj, final Description mismatchDescription) {
		final PojoField temp = (PojoField)obj;
		final Method method;
		try {
			Annotation a = temp.getAnnotation(this.annotationClass);
			if (a == null) {
				mismatchDescription.appendText("does not have annotation ").appendText(this.annotationClass.getSimpleName());
				return false;
			}
			method = a.getClass().getMethod(attribute);
			final Object result = method.invoke(a);
			if (!this.annotationMatcher.matches(result)) {
				this.annotationMatcher.describeMismatch(result, mismatchDescription);
				return false;
			}
		} catch (NoSuchMethodException | IllegalAccessException | IllegalArgumentException | InvocationTargetException e) {
			mismatchDescription.appendText("does not have property ").appendText(attribute);
			logger.debug("Error occured", e);
			return false;
		}
		return true;
	}

	@Override
	public void describeTo(final Description description) {
		// Intentionally left blank.
	}

	public static <T extends PojoField> Matcher<T> hasAnnotationPropertyWithValue(Class<? extends Annotation> clazz, String attribute, final Matcher<?> annotationMatcher) {
		return new HasAnnotationPropertyWithValueMatcher<T>(clazz, attribute, annotationMatcher);
	}
}