AccessToken.java

package com.flipagram.core.auth;

import org.joda.time.DateTime;

import com.fasterxml.jackson.annotation.JsonIgnore;
import com.flipagram.lib.joda.JodaUtil;
import com.flipagram.lib.model.AbstractModelObject;
import com.flipagram.lib.model.Fid;
import com.flipagram.lib.model.JsonBackedModelObject;
import com.flipagram.lib.util.StringUtil;

/**
 * An access token.
 */
@SuppressWarnings("serial")
public class AccessToken
		extends AbstractModelObject
		implements JsonBackedModelObject<Fid> {

	public static final String ACCESS_TOKEN_ENC_KEY = "This is the encryption key, keep it secret";

	private Fid id;
	private Fid userId;
	private Fid apiKeyId;
	private Fid deviceId;
	private DateTime dateCreated;
	private DateTime dateExpires;
	private String version;

	/**
	 * Creates an {@link AccessToken} from the given token.
	 * @param token the token
	 * @return the token
	 */
	public static AccessToken fromToken(String token) {
		String[] parts = token.split(":");
		if (parts.length!=7) {
			throw new IllegalArgumentException("Expected 7 parts");
		}
		AccessToken ret = new AccessToken();
		ret.version			= parts[0].length()>0 ? parts[0] : null;
		ret.id				= new Fid(Long.parseLong(parts[1]));
		ret.apiKeyId		= new Fid(parts[2]);
		ret.deviceId		= parts[3].length()>0 ? new Fid(parts[3]) : null;
		ret.userId			= parts[4].length()>0 ? new Fid(parts[4]) : null;
		ret.dateCreated		= JodaUtil.forMillis(Long.parseLong(parts[5]));
		ret.dateExpires		= JodaUtil.forMillis(Long.parseLong(parts[6]));
		return ret;
	}

	/**
	 * Creates an {@link AccessToken} from the given encoded token.
	 * @param encodedToken the encoded token
	 * @return the token
	 */
	public static AccessToken fromEncodedToken(String encodedToken) {
		if (!StringUtil.isEmpty(encodedToken)) {
			return fromToken(StringUtil.aesDecodeString(
					encodedToken, ACCESS_TOKEN_ENC_KEY));
		}
		return null;
	}

	@Override
	public Fid getId() {
		return id;
	}

	@Override
	public void setId(Fid id) {
		this.id = id;
	}

	/**
	 * @return the userId
	 */
	public Fid getUserId() {
		return userId;
	}

	/**
	 * @param userId the userId to set
	 */
	public void setUserId(Fid userId) {
		this.userId = userId;
	}

	/**
	 * @return the apiKeyId
	 */
	public Fid getApiKeyId() {
		return apiKeyId;
	}

	/**
	 * @param apiKeyId the apiKeyId to set
	 */
	public void setApiKeyId(Fid apiKeyId) {
		this.apiKeyId = apiKeyId;
	}

	/**
	 * @return the deviceId
	 */
	public Fid getDeviceId() {
		return deviceId;
	}

	/**
	 * @param deviceId the deviceId
	 */
	public void setDeviceId(Fid deviceId) {
		this.deviceId = deviceId;
	}

	/**
	 * Returns a decoded version of the token.
	 * @return the token
	 */
	@JsonIgnore
	public String getDecodedToken() {
		String buf = new StringBuilder()
			.append(version!=null ? version : "").append(":")
			.append(id!=null ? id.asLong() : null).append(":")
			.append(apiKeyId).append(":")
			.append(deviceId!=null ? deviceId : "").append(":")
			.append(userId!=null ? userId : "").append(":")
			.append(dateCreated!=null ? dateCreated.getMillis() : 0).append(":")
			.append(dateExpires!=null ? dateExpires.getMillis() : 0)
			.toString();
		return buf;
	}

	/**
	 * Returns an encoded version of the token.
	 * @return the token
	 */
	@JsonIgnore
	public String getToken() {
		return StringUtil.aesEncodeString(
				getDecodedToken(), ACCESS_TOKEN_ENC_KEY);
	}

	/**
	 * @return the dateCreated
	 */
	public DateTime getDateCreated() {
		return dateCreated;
	}

	/**
	 * @param dateCreated the dateCreated to set
	 */
	public void setDateCreated(DateTime dateCreated) {
		this.dateCreated = dateCreated;
	}

	/**
	 * @return the dateExpires
	 */
	public DateTime getDateExpires() {
		return dateExpires;
	}

	/**
	 * @param dateExpires the dateExpires to set
	 */
	public void setDateExpires(DateTime dateExpires) {
		this.dateExpires = dateExpires;
	}

	@Override
	public String getVersion() {
		return version;
	}

	@Override
	public void setVersion(String version) {
		this.version = version;
	}

	@Override
	public String toString() {
		return getToken();
	}

}