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package com.cuisongliu.jwt.autoconfig;
/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2018 [email protected]
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

import com.alibaba.fastjson.serializer.SerializeConfig;
import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.serializer.ToStringSerializer;
import com.alibaba.fastjson.serializer.ValueFilter;
import com.alibaba.fastjson.support.config.FastJsonConfig;
import com.alibaba.fastjson.util.IOUtils;
import org.springframework.http.MediaType;

import java.math.BigInteger;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.List;

/**
 * fastjson相关的配置
 * 最佳用法单例： Effective Java （No.3）
 * @author cuisongliu [[email protected]]
 * @since 2018-03-11 23:26
 */
public enum FastJsonBuilder {

    INSTANCE;

    /**
     * 支持的mediaType类型
     */
    public List supportedMediaType() {
        ArrayList mediaTypes = new ArrayList<>();
        mediaTypes.add(MediaType.APPLICATION_JSON_UTF8);
        return mediaTypes;
    }


    public FastJsonConfig fastjsonConfig() {
        FastJsonConfig fastJsonConfig = new FastJsonConfig();
        fastJsonConfig.setSerializerFeatures(
                SerializerFeature.PrettyFormat,
                SerializerFeature.WriteMapNullValue
        );
        fastJsonConfig.setSerializerFeatures(SerializerFeature.QuoteFieldNames, SerializerFeature.WriteNullNumberAsZero,
                SerializerFeature.WriteNullListAsEmpty, SerializerFeature.WriteNullStringAsEmpty,
                SerializerFeature.WriteNullBooleanAsFalse, SerializerFeature.WriteNullStringAsEmpty,
                SerializerFeature.WriteMapNullValue, SerializerFeature.WriteDateUseDateFormat);
        fastJsonConfig.setCharset(IOUtils.UTF8);
        fastJsonConfig.setDateFormat("yyyy-MM-dd HH:mm:ss");
        ValueFilter valueFilter = new ValueFilter() {
            @Override
            public Object process(Object o, String s, Object o1) {
                if (null == o1) {
                    o1 = "";
                }
                return o1;
            }
        };
        fastJsonConfig.setCharset(Charset.forName("utf-8"));
        fastJsonConfig.setSerializeFilters(valueFilter);

        //解决Long转json精度丢失的问题
        SerializeConfig serializeConfig = SerializeConfig.globalInstance;
        serializeConfig.put(BigInteger.class, ToStringSerializer.instance);
        serializeConfig.put(Long.class, ToStringSerializer.instance);
        serializeConfig.put(Long.TYPE, ToStringSerializer.instance);
        fastJsonConfig.setSerializeConfig(serializeConfig);
        return fastJsonConfig;
    }
}