package eu.eudat.models.rda.mapper;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import eu.eudat.elastic.entities.Tag;
import eu.eudat.logic.utilities.json.JavaToJson;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;
import java.util.*;
import java.util.stream.Collectors;

public class KeywordRDAMapper {
	private static final Logger logger = LoggerFactory.getLogger(KeywordRDAMapper.class);

	public static List<String> toRDA(String value) {
		ObjectMapper mapper = new ObjectMapper();
			value = JavaToJson.objectStringToJson(value);
			if (!value.isEmpty()) {
				try {
					List<Tag> tags = Arrays.asList(mapper.readValue(value, Tag[].class));
					List<String> keywordNames = tags.stream().map(Tag::getName).collect(Collectors.toList());
					return keywordNames;
				} catch (JsonProcessingException e) {
					logger.warn(e.getMessage() + ". Attempting to parse it as a String list.");
					if(!value.isEmpty()) {
						return new ArrayList<>(Arrays.asList(value.replace(" ", "").split(",")));
					}
				}

			}

		return new ArrayList<>();
	}
}