package eu.eudat.models.rda.mapper;

import com.fasterxml.jackson.databind.JsonNode;
import eu.eudat.logic.utilities.helpers.MyStringUtils;
import eu.eudat.models.rda.SecurityAndPrivacy;
import eu.eudat.models.rda.TechnicalResource;

import java.util.*;

public class TechnicalResourceRDAMapper {

	public static List<TechnicalResource> toRDAList(List<JsonNode> nodes) {
		Map<String, TechnicalResource> rdaMap = new HashMap<>();

		for (JsonNode node: nodes) {
			String rdaProperty = node.get("rdaProperty").asText();
			String rdaValue = node.get("value").asText();

			TechnicalResource rda = getRelative(rdaMap, node.get("numbering").asText());
			if (!rdaMap.containsValue(rda)) {
				rdaMap.put(node.get("numbering").asText(), rda);
			}
			for (PropertyName propertyName: PropertyName.values()) {
				if (rdaProperty.contains(propertyName.getName())) {
					switch (propertyName) {
						case NAME:
							rda.setName(rdaValue);
							break;
						case DESCRIPTION:
							rda.setDescription(rdaValue);
							break;
					}
				}
			}
		}

		return new ArrayList<>(rdaMap.values());
	}

	public static TechnicalResource toRDA(JsonNode node) {
		TechnicalResource rda = new TechnicalResource();
		String rdaProperty = node.get("rdaProperty").asText();
		String value = node.get("value").asText();

		if (rdaProperty.contains("description")) {
			rda.setDescription(value);
		} else if (rdaProperty.contains("name")) {
			rda.setName(value);
		}

		return rda;
	}

	private static TechnicalResource getRelative(Map<String, TechnicalResource> rdaMap, String numbering) {
		return rdaMap.entrySet().stream().filter(entry -> MyStringUtils.getFirstDifference(entry.getKey(), numbering) > 0)
					 .max(Comparator.comparingInt(entry -> MyStringUtils.getFirstDifference(entry.getKey(), numbering))).map(Map.Entry::getValue).orElse(new TechnicalResource());
	}

	private enum PropertyName {
		NAME("name"),
		DESCRIPTION("description");

		private String name;

		PropertyName(String name) {
			this.name = name;
		}

		public String getName() {
			return name;
		}
	}
}