package eu.dnetlib.dhp.eosc.model;

import java.io.Serializable;
import java.util.Objects;

import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.github.imifou.jsonschema.module.addon.annotation.JsonSchema;

/**
 * To represent the gereric relation between two entities. It has the following parameters: - private Node source to
 * represent the entity source of the relation - private Node target to represent the entity target of the relation -
 * private RelType reltype to represent the semantics of the relation - private Provenance provenance to represent the
 * provenance of the relation
 */
public class Relation implements Serializable {
	@JsonSchema(description = "The node source in the relation")
	private String source;

	@JsonSchema(description = "The node target in the relation")
	private String target;

	@JsonSchema(description = "To represent the semantics of a relation between two entities")
	@JsonIgnoreProperties(ignoreUnknown = true)
	private RelType reltype;

	@JsonSchema(description = "The reason why OpenAIRE holds the relation ")
	@JsonIgnoreProperties(ignoreUnknown = true)
	private Provenance provenance;

	@JsonSchema(description = "The result type of the target for this relation")
	@JsonIgnoreProperties(ignoreUnknown = true)
	private String targetType;

	public String getTargetType() {
		return targetType;
	}

	public void setTargetType(String targetType) {
		this.targetType = targetType;
	}

	public String getSource() {
		return source;
	}

	public void setSource(String source) {
		this.source = source;
	}

	public String getTarget() {
		return target;
	}

	public void setTarget(String target) {
		this.target = target;
	}

	public RelType getReltype() {
		return reltype;
	}

	public void setReltype(RelType reltype) {
		this.reltype = reltype;
	}

	public Provenance getProvenance() {
		return provenance;
	}

	public void setProvenance(Provenance provenance) {
		this.provenance = provenance;
	}

	@Override
	public int hashCode() {

		return Objects.hash(source, target, reltype.getType() + ":" + reltype.getName());
	}

	public static Relation newInstance(String source, String target, RelType reltype, Provenance provenance) {
		Relation relation = new Relation();
		relation.source = source;
		relation.target = target;
		relation.reltype = reltype;
		relation.provenance = provenance;
		return relation;
	}

	public static Relation newInstance(String source, String target) {
		Relation relation = new Relation();
		relation.source = source;
		relation.target = target;

		return relation;
	}
}