package com.ydtech.config;

import cn.hutool.core.util.StrUtil;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.deser.std.StdScalarDeserializer;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
import org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.util.StringUtils;

import java.io.IOException;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;

/**
 * @author wenks
 * @version 0.0.2
 * @description LocalDateTime 全局配置
 * @date 2023/5/17 17:50
 */
@Configuration
public class LocalDateTimeConfig {

    private static final DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");

    /**
     * 序列化内容
     * LocalDateTime -> String
     * 服务端返回给客户端内容
     */
    @Bean
    public LocalDateTimeSerializer localDateTimeSerializer() {
        return new LocalDateTimeSerializer(dateTimeFormatter);
    }

    /*
     * 反序列化内容
     * String -> LocalDateTime
     * 客户端传入服务端数据
     * */
    @Bean
    public LocalDateTimeDeserializer localDateTimeDeserializer() {
        return new LocalDateTimeDeserializer(dateTimeFormatter);
    }

    @Bean
    public Jackson2ObjectMapperBuilderCustomizer jackson2ObjectMapperBuilderCustomizer() {
        return builder -> {
            builder.serializerByType(LocalDateTime.class, localDateTimeSerializer());
            builder.deserializerByType(LocalDateTime.class, localDateTimeDeserializer());
            builder.deserializerByType(String.class,
                    new StdScalarDeserializer<String>(String.class) {
                        private static final long serialVersionUID = 8744775952505486332L;

                        @Override
                        public String deserialize(JsonParser jsonParser, DeserializationContext ctx) throws IOException {
                            String res = StringUtils.trimWhitespace(jsonParser.getValueAsString());
                            return StrUtil.isBlank(res) ? null : res;
                        }
                    });
        };
    }

}