/*
 * Copyright 2013-present 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 com.alibaba.cloud.sentinel.custom;


import com.alibaba.cloud.sentinel.SentinelProperties;
import com.alibaba.cloud.sentinel.datasource.converter.JsonConverter;
import com.alibaba.cloud.sentinel.datasource.converter.XmlConverter;
import com.alibaba.csp.sentinel.annotation.aspectj.SentinelResourceAspect;
import com.alibaba.csp.sentinel.slots.block.authority.AuthorityRule;
import com.alibaba.csp.sentinel.slots.block.degrade.DegradeRule;
import com.alibaba.csp.sentinel.slots.block.flow.FlowRule;
import com.alibaba.csp.sentinel.slots.block.flow.param.ParamFlowRule;
import com.alibaba.csp.sentinel.slots.system.SystemRule;
import tools.jackson.databind.DeserializationFeature;
import tools.jackson.databind.ObjectMapper;
import tools.jackson.databind.json.JsonMapper;
import tools.jackson.dataformat.xml.XmlMapper;

import org.springframework.beans.factory.support.DefaultListableBeanFactory;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;

/**
 * @author xiaojing
 * @author jiashuai.xie
 * @author <a href="mailto:fangjian0423@gmail.com">Jim</a>
 * @author freeman
 */
@Configuration(proxyBeanMethods = false)
@ConditionalOnProperty(name = "spring.cloud.sentinel.enabled", matchIfMissing = true)
@EnableConfigurationProperties(SentinelProperties.class)
public class SentinelAutoConfiguration {

	@Bean
	@ConditionalOnMissingBean
	public SentinelResourceAspect sentinelResourceAspect() {
		return new SentinelResourceAspect();
	}

	@Bean
	@ConditionalOnMissingBean
	@ConditionalOnClass(name = "org.springframework.web.client.RestTemplate")
	@ConditionalOnProperty(name = "resttemplate.sentinel.enabled", havingValue = "true",
			matchIfMissing = true)
	public static SentinelBeanPostProcessor sentinelBeanPostProcessor(
			ApplicationContext applicationContext) {
		return new SentinelBeanPostProcessor(applicationContext);
	}

	@Bean
	@ConditionalOnMissingBean
	public SentinelDataSourceHandler sentinelDataSourceHandler(
			DefaultListableBeanFactory beanFactory, SentinelProperties sentinelProperties,
			Environment env) {
		return new SentinelDataSourceHandler(beanFactory, sentinelProperties, env);
	}

	@ConditionalOnClass(ObjectMapper.class)
	@Configuration(proxyBeanMethods = false)
	protected static class SentinelConverterConfiguration {

		@Configuration(proxyBeanMethods = false)
		protected static class SentinelJsonConfiguration {

			private final ObjectMapper objectMapper;

			public SentinelJsonConfiguration() {
				this.objectMapper = JsonMapper.builder()
						.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES)
						.build();
			}

			@Bean("sentinel-json-flow-converter")
			public JsonConverter jsonFlowConverter() {
				return new JsonConverter(objectMapper, FlowRule.class);
			}

			@Bean("sentinel-json-degrade-converter")
			public JsonConverter jsonDegradeConverter() {
				return new JsonConverter(objectMapper, DegradeRule.class);
			}

			@Bean("sentinel-json-system-converter")
			public JsonConverter jsonSystemConverter() {
				return new JsonConverter(objectMapper, SystemRule.class);
			}

			@Bean("sentinel-json-authority-converter")
			public JsonConverter jsonAuthorityConverter() {
				return new JsonConverter(objectMapper, AuthorityRule.class);
			}

			@Bean("sentinel-json-param-flow-converter")
			public JsonConverter jsonParamFlowConverter() {
				return new JsonConverter(objectMapper, ParamFlowRule.class);
			}

		}

		@ConditionalOnClass(XmlMapper.class)
		@Configuration(proxyBeanMethods = false)
		protected static class SentinelXmlConfiguration {

			private final XmlMapper xmlMapper;

			public SentinelXmlConfiguration() {
				this.xmlMapper = XmlMapper.builder()
						.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES)
						.build();
			}

			@Bean("sentinel-xml-flow-converter")
			public XmlConverter xmlFlowConverter() {
				return new XmlConverter(xmlMapper, FlowRule.class);
			}

			@Bean("sentinel-xml-degrade-converter")
			public XmlConverter xmlDegradeConverter() {
				return new XmlConverter(xmlMapper, DegradeRule.class);
			}

			@Bean("sentinel-xml-system-converter")
			public XmlConverter xmlSystemConverter() {
				return new XmlConverter(xmlMapper, SystemRule.class);
			}

			@Bean("sentinel-xml-authority-converter")
			public XmlConverter xmlAuthorityConverter() {
				return new XmlConverter(xmlMapper, AuthorityRule.class);
			}

			@Bean("sentinel-xml-param-flow-converter")
			public XmlConverter xmlParamFlowConverter() {
				return new XmlConverter(xmlMapper, ParamFlowRule.class);
			}

		}

	}

}
