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package com.soento.core.util;

import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.databind.util.JSONPObject;
import com.soento.core.enums.DateFormat;

import java.io.IOException;
import java.util.TimeZone;

/**
 * @author soento
 */
public final class JsonUtil {
    private static final ObjectMapper OBJECT_MAPPER;

    static {
        OBJECT_MAPPER = new ObjectMapper();
        //去掉默认的时间戳格式
        OBJECT_MAPPER.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
        //设置为中国上海时区
        OBJECT_MAPPER.setTimeZone(TimeZone.getTimeZone("GMT+8"));
        OBJECT_MAPPER.configure(SerializationFeature.INDENT_OUTPUT, false);
        //空值不序列化
        OBJECT_MAPPER.setSerializationInclusion(JsonInclude.Include.NON_NULL);
        //反序列化时，属性不存在的兼容处理
        OBJECT_MAPPER.getDeserializationConfig().withoutFeatures(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
        //序列化时，日期的统一格式
        OBJECT_MAPPER.setDateFormat(DateFormat.YYYYMMDDHHMISS_DASH.instance());
        OBJECT_MAPPER.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
        OBJECT_MAPPER.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
        //单引号处理
        OBJECT_MAPPER.configure(com.fasterxml.jackson.core.JsonParser.Feature.ALLOW_SINGLE_QUOTES, true);
    }

    private JsonUtil() {
    }

    public static ObjectMapper mapper() {
        return OBJECT_MAPPER;
    }

    public static  T toObject(String json, Class clazz) {
        try {
            return OBJECT_MAPPER.readValue(json, clazz);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    public static  String toJson(T obj) {
        try {
            return OBJECT_MAPPER.writeValueAsString(obj);
        } catch (JsonProcessingException e) {
            throw new RuntimeException(e);
        }
    }

    public static  String toJsonp(String function, T obj) {
        return toJson(new JSONPObject(function, obj));
    }
}