package eu.simstadt.nf4j;

/**
 * The list of all possible export and import job states.
 * 
 * @author Marcel Bruse
 */
public enum JobStatus {
	UNKNOWN(0),			// A local NF4J code, may be set in rare cases, if synchronization with nF fails. 
	LOCAL(10), 			// Job has not been sent yet and is known by the local system only.
	SENT(20), 			// Job has been sent or it is assumed that it has been set before.
	PENDING(30),		// Export job has been enqueued and waits for execution
	READY_TO_RUN(31),	// Same as PENDING, but for import jobs
	APPROVE(32), 		// (?) For import jobs only. Read the nF documentation, seams to be never used.
	RUNNING(40), 		// Job is running
	APPROVE_RUNNING(41),	// (?) For import jobs only. Read the nF documentation, seams to be never used.
	FAILED(50), 		// Export job failed 
	ERROR(51),			// Same as FAILED, but for import jobs
	WARNING(52),		// For import jobs only. There has been a minor problem
	REJECT(53), 		// (?) For import jobs only. Read the nF documentation, seams to be never used.
	REJECT_RUNNING(54), 		// (?) For import jobs only. Read the nF documentation, seams to be never used.
	APPROVE_REJECT_ERROR(55),	// (?) For import jobs only. Read the nF documentation, seams to be never used.
	APPROVE_REJECT_OK(56),		// (?) For import jobs only. Read the nF documentation, seams to be never used.
	IMPORTED_WARNING(57),		// (?) For import jobs only. Read the nF documentation, seams to be never used.
	FINISHED(60), 		// Job finished
	DOWNLOAD(70);		// Export jobs only. CityGML has been download to the local file system
	
	public static final String UNKNOWN_MESSAGE = "The state of the job is unknown.";
	public static final String LOCAL_MESSAGE = "The job is known locally only. It has not been sent yet.";
	public static final String SENT_MESSAGE = "The job has been sent, is enqueued at the nF and has a job id.";
	public static final String PENDING_MESSAGE = "Job is pending.";
	public static final String RUNNING_MESSAGE = "Job is running.";
	public static final String FAILED_MESSAGE = "Job failed.";
	public static final String FINISHED_MESSAGE = "Job is finished.";
	public static final String WAITING_MESSAGE = "Job is waiting for a response from the remote nF instance.";
	
	/**
	 * This constructor sets messages for some states.
	 * 
	 * @param internalCode Our numerical SimStadt-internal code for the nF status codes.
	 */
	private JobStatus(int internalCode) {
		switch (internalCode) {
		case 0:
			message = UNKNOWN_MESSAGE; break;
		case 10:
			message = LOCAL_MESSAGE; break;
		case 20:
			message = SENT_MESSAGE; break;
		case 30:
		case 31:
			message = PENDING_MESSAGE; break;
		case 40:
			message = RUNNING_MESSAGE; break;
		case 50:
		case 51:
			message = FAILED_MESSAGE; break;
		case 60:
			message = FINISHED_MESSAGE; break;
		default:
			message = "";
		}
	}
	
	/**
	 * This message describes the status or gives hints about error states. This message may come from a
	 * nF response.
	 */
	private String message;
	
	/**
	 * Sets a message for this status in order to describe the status.
	 * 
	 * @param message A message to describe this status.
	 */
	public void setMessage(String message) {
		this.message = message;
	}
	
	/**
	 * @return Returns a message which describes this status.
	 */
	public String getMessage() {
		return message;
	}
}