/*
 * Copyright 2012-2018 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.condition;

import java.util.List;

import org.springframework.boot.context.properties.bind.BindResult;
import org.springframework.boot.context.properties.bind.Bindable;
import org.springframework.boot.context.properties.bind.Binder;
import org.springframework.context.annotation.ConditionContext;
import org.springframework.core.type.AnnotatedTypeMetadata;

/**
 * Abstract base class for list conditions.
 *
 * @author Eneias Silva
 *
 */
public abstract class AbstractListCondition extends SpringBootCondition {

	private static final Bindable<List<String>> STRING_LIST = Bindable
			.listOf(String.class);

	@Override
	public ConditionOutcome getMatchOutcome(ConditionContext context,
			AnnotatedTypeMetadata metadata) {
		BindResult<?> property = Binder.get(context.getEnvironment())
				.bind(getPropertyName(), STRING_LIST);
		if (property.isBound()) {
			return ConditionOutcome.match(ConditionMessage.forCondition(getClassName())
					.found("property").items(getPropertyName()));
		}
		return ConditionOutcome.noMatch(ConditionMessage.forCondition(getClassName())
				.didNotFind("property").items(getPropertyName()));
	}


	protected abstract String getPropertyName();


	protected abstract String getClassName();

}
