/*
 * Copyright 2012-2016 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.springframework.boot.autoconfigure.cache;

import org.springframework.boot.autoconfigure.condition.ConditionMessage;
import org.springframework.boot.autoconfigure.condition.ConditionOutcome;
import org.springframework.boot.autoconfigure.condition.SpringBootCondition;
import org.springframework.boot.bind.RelaxedPropertyResolver;
import org.springframework.context.annotation.ConditionContext;
import org.springframework.core.type.AnnotatedTypeMetadata;
import org.springframework.core.type.AnnotationMetadata;
import org.springframework.core.type.ClassMetadata;

/**
 * General cache condition used with all cache configuration classes.
 *
 * @author Stephane Nicoll
 * @author Phillip Webb
 * @since 1.3.0
 */
class CacheCondition extends SpringBootCondition {

	@Override
	public ConditionOutcome getMatchOutcome(ConditionContext context,
			AnnotatedTypeMetadata metadata) {
		String sourceClass = "";
		if (metadata instanceof ClassMetadata) {
			sourceClass = ((ClassMetadata) metadata).getClassName();
		}
		ConditionMessage.Builder message = ConditionMessage.forCondition("Cache",
				sourceClass);
		RelaxedPropertyResolver resolver = new RelaxedPropertyResolver(
				context.getEnvironment(), "spring.cache.");
		if (!resolver.containsProperty("type")) {
			return ConditionOutcome.match(message.because("automatic cache type"));
		}
		CacheType cacheType = CacheConfigurations
				.getType(((AnnotationMetadata) metadata).getClassName());
		String value = resolver.getProperty("type").replace("-", "_").toUpperCase();
		if (value.equals(cacheType.name())) {
			return ConditionOutcome.match(message.because(value + " cache type"));
		}
		return ConditionOutcome.noMatch(message.because(value + " cache type"));
	}

}
