package cn.wisenergy.chnmuseum.party.conf;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.serializer.ValueFilter;
import com.alibaba.fastjson.support.config.FastJsonConfig;
import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.MediaType;

import java.util.ArrayList;
import java.util.List;

@Configuration
@ConditionalOnClass({JSON.class})
public class FastJsonHttpMessageConvertersConfig {

    @Configuration
    @ConditionalOnClass({FastJsonHttpMessageConverter.class})
    @ConditionalOnProperty(name = {
            "spring.mvc.converters.preferred-json-mapper"}, havingValue = "fastjson", matchIfMissing = true)
    protected static class FastJson2HttpMessageConverterConfiguration {
        protected FastJson2HttpMessageConverterConfiguration() {
        }

        @Bean
        @ConditionalOnMissingBean({FastJsonHttpMessageConverter.class})
        public FastJsonHttpMessageConverter fastJsonHttpMessageConverter() {
            FastJsonHttpMessageConverter converter = new FastJsonHttpMessageConverter();

            FastJsonConfig fastJsonConfig = new FastJsonConfig();
            fastJsonConfig.setSerializerFeatures(
                    SerializerFeature.PrettyFormat,
                    SerializerFeature.WriteMapNullValue,
                    SerializerFeature.DisableCircularReferenceDetect
            );
            // 处理ie浏览器保存数据时出现下载json数据问题
            List<MediaType> mediaTypes = new ArrayList<>();
            mediaTypes.add(MediaType.APPLICATION_JSON);
            mediaTypes.add(MediaType.TEXT_PLAIN);
            //mediaTypes.add(new MediaType("text", "plain", Charset.forName("UTF-8")));
            converter.setSupportedMediaTypes(mediaTypes);
            // o 是class,s 是key值,o1 是value值
            ValueFilter valueFilter = (o, s, o1) -> {
                if (null == o1) {
                    o1 = "";
                }
                return o1;
            };
            fastJsonConfig.setSerializeFilters(valueFilter);
            converter.setFastJsonConfig(fastJsonConfig);
            return converter;
        }
    }

}