package com.imyeyu.api.util;

import com.google.gson.Gson;
import com.google.gson.JsonElement;
import com.google.gson.JsonSerializationContext;
import com.google.gson.JsonSerializer;
import com.imyeyu.java.TimiJava;
import com.imyeyu.java.ref.Ref;
import com.imyeyu.api.TimiServerAPI;
import com.imyeyu.api.bean.MultilingualHandler;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;

import java.lang.reflect.Field;
import java.lang.reflect.Type;
import java.util.List;

/**
 * @author 夜雨
 * @version 2023-10-26 10:16
 */
@Slf4j
@Component
@RequiredArgsConstructor
public class GsonSerializerAdapter implements JsonSerializer<Object> {

	private final Gson gson;
	private final RedisMultilingual redisMultilingual;

	@Override
	public JsonElement serialize(Object value, Type typeOfSrc, JsonSerializationContext context) {
		if (value instanceof MultilingualHandler _value) {
			fillMultilingual(_value);
		}
		return gson.toJsonTree(value);
	}

	private <K extends MultilingualHandler> void fillMultilingual(K value) {
		try {
			List<Field> fields = Ref.listFields(value.getClass());
			for (int i = 0; i < fields.size(); i++) {
				Field field = fields.get(i);
				MultilingualHandler.MultilingualField multiField = field.getAnnotation(MultilingualHandler.MultilingualField.class);
				if (multiField != null) {
					String multiLangId = Ref.getFieldValue(value, field, String.class);
					if (TimiJava.isNotEmpty(multiLangId)) {
						Long langId = Long.parseLong(multiLangId);
						if (redisMultilingual.map(TimiServerAPI.getUserLanguage()) instanceof RedisLanguage rl) {
							// TODO 支持插值参数
							Ref.setFieldValue(value, field, rl.text(langId));
						}
					}
				}
			}
		} catch (IllegalAccessException e) {
			throw new RuntimeException(e);
		}
	}
}