package com.test.musichouduan.config;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
import org.springframework.boot.jackson.JsonComponent;

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

@JsonComponent
public class JacksonConfig {

    // 全局默认使用短格式（仅日期），避免影响管理后台等只需日期的场景
    private static final DateTimeFormatter FORMATTER = DateTimeFormatter.ofPattern("yyyy-MM-dd");

    public static class LocalDateTimeSerializer extends JsonSerializer<LocalDateTime> {
        @Override
        public void serialize(LocalDateTime value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
            if (value != null) {
                gen.writeString(FORMATTER.format(value));
            }
        }
    }
}