package net.wotonomy.foundation;

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

/**
 * Represents an error code.
 * 
 * @author bjculkin
 *
 */
public class NSError implements Serializable {
	private static final long serialVersionUID = 532874201592029465L;

	public static final String NSWotonomyDomain = "wotonomy";
	public static final String NSJavaDomain = "java";

	public final String domain;
	public final int error;

	public final NSDictionary<String, Object> userInfo;

	private String description;

	private NSArray<NSError> underlyingErrors = new NSMutableArray<>();
	
	@SuppressWarnings("unchecked")
	public NSError(String domain, int error) {
		this(domain, error, (NSDictionary<String, Object>) NSDictionary.EmptyDictionary);
	}

	public NSError(String domain, int error, NSDictionary<String, Object> userInfo) {
		this.domain = domain;
		this.error = error;
		this.userInfo = userInfo;
	}

	public String getDescription() {
		return description;
	}

	public void setDescription(String description) {
		this.description = description;
	}

	public NSArray<NSError> getUnderlyingErrors() {
		return underlyingErrors;
	}
	
	public void addUnderlyingError(NSError underlying) {
		underlyingErrors.add(underlying);
	}
	
	@Override
	public int hashCode() {
		return Objects.hash(domain, error, userInfo, description);
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		NSError other = (NSError) obj;
		return Objects.equals(domain, other.domain) && error == other.error && Objects.equals(userInfo, other.userInfo)
				&& Objects.equals(description, other.description);
	}
}