/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.dubbo.spring.boot.autoconfigure;

import org.apache.dubbo.config.annotation.DubboReference;
import org.apache.dubbo.config.annotation.DubboService;
import org.apache.dubbo.config.spring.beans.factory.annotation.ReferenceAnnotationBeanPostProcessor;
import org.apache.dubbo.config.spring.beans.factory.annotation.ServiceAnnotationPostProcessor;
import org.apache.dubbo.config.spring.context.annotation.EnableDubboConfig;
import org.apache.dubbo.config.spring.util.SpringCompatUtils;

import java.util.Collection;
import java.util.Set;

import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import static org.apache.dubbo.spring.boot.util.DubboUtils.BASE_PACKAGES_BEAN_NAME;
import static org.apache.dubbo.spring.boot.util.DubboUtils.BASE_PACKAGES_PROPERTY_NAME;
import static org.apache.dubbo.spring.boot.util.DubboUtils.DUBBO_PREFIX;
import static org.apache.dubbo.spring.boot.util.DubboUtils.DUBBO_SCAN_PREFIX;

/**
 * Dubbo Auto {@link Configuration}
 *
 * @see DubboReference
 * @see DubboService
 * @see ServiceAnnotationPostProcessor
 * @see ReferenceAnnotationBeanPostProcessor
 * @since 2.7.0
 */
@ConditionalOnProperty(prefix = DUBBO_PREFIX, name = "enabled", matchIfMissing = true)
@Configuration
@AutoConfigureAfter(DubboRelaxedBindingAutoConfiguration.class)
@EnableDubboConfig
public class DubboAutoConfiguration {

    /**
     * Creates {@link ServiceAnnotationPostProcessor} Bean
     *
     * @param packagesToScan the packages to scan
     * @return {@link ServiceAnnotationPostProcessor}
     */
    @ConditionalOnProperty(prefix = DUBBO_SCAN_PREFIX, name = BASE_PACKAGES_PROPERTY_NAME)
    @ConditionalOnBean(name = BASE_PACKAGES_BEAN_NAME)
    @Bean
    public static ServiceAnnotationPostProcessor serviceAnnotationBeanProcessor(
            @Qualifier(BASE_PACKAGES_BEAN_NAME) Set<String> packagesToScan) {
        ServiceAnnotationPostProcessor serviceAnnotationPostProcessor;
        try {
            serviceAnnotationPostProcessor =
                    (ServiceAnnotationPostProcessor) SpringCompatUtils.serviceAnnotationPostProcessor()
                            .getDeclaredConstructor(Collection.class)
                            .newInstance(packagesToScan);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
        return serviceAnnotationPostProcessor;
    }
}
