/*
 * Copyright 2016-2018. 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
 *
 *      https://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.cloud.appbroker.acceptance;

import java.lang.reflect.Method;
import java.util.Optional;
import org.junit.jupiter.api.extension.ExtensionContext;
import org.junit.jupiter.api.extension.ParameterContext;
import org.junit.jupiter.api.extension.ParameterResolutionException;
import org.junit.jupiter.api.extension.ParameterResolver;

class BrokerPropertiesParameterResolver implements ParameterResolver {

	@Override
	public boolean supportsParameter(ParameterContext parameterContext, ExtensionContext extensionContext) throws ParameterResolutionException {
		return parameterContext.getParameter().getType() == BrokerProperties.class;
	}

	@Override
	public BrokerProperties resolveParameter(ParameterContext parameterContext, ExtensionContext extensionContext) throws ParameterResolutionException {
		String[] properties = getValueHolderProperties(extensionContext);
		return new BrokerProperties(properties);
	}

	private static String[] getValueHolderProperties(ExtensionContext extensionContext) {
		Optional<Method> testInstance = extensionContext.getTestMethod();
		return testInstance
			.map(method -> method.getAnnotation(AppBrokerTestProperties.class).value())
			.orElseGet(() -> new String[]{});
	}

}