/**
 * Copyright (C) 2010-14 diirt developers. See COPYRIGHT.TXT
 * All rights reserved. Use is subject to license terms. See LICENSE.TXT
 */
package org.diirt.support.ca;

import gov.aps.jca.dbr.TIME;
import org.diirt.vtype.Alarm;
import org.diirt.vtype.AlarmSeverity;
import org.diirt.vtype.Time;
import java.time.Instant;

/**
 *
 * @author carcassi
 */
class VMetadata<TValue extends TIME> implements Alarm, Time {

    final TValue dbrValue;
    private final boolean disconnected;
    private final Instant timestamp;

    VMetadata(TValue dbrValue, JCAConnectionPayload connPayload) {
        this.dbrValue = dbrValue;
        this.disconnected = !connPayload.isChannelConnected();
        if (disconnected) {
            timestamp = connPayload.getEventTime();
        } else {
            timestamp = DataUtils.timestampOf(dbrValue.getTimeStamp());
        }
    }

    @Override
    public AlarmSeverity getAlarmSeverity() {
        if (disconnected)
            return AlarmSeverity.UNDEFINED;
        return DataUtils.fromEpics(dbrValue.getSeverity());
    }

    @Override
    public String getAlarmName() {
        if (disconnected)
            return "Disconnected";
        return dbrValue.getStatus().getName();
    }

    @Override
    public Instant getTimestamp() {
        return timestamp;
    }

    @Override
    public Integer getTimeUserTag() {
        return null;
    }

    @Override
    public boolean isTimeValid() {
        return DataUtils.isTimeValid(dbrValue.getTimeStamp());
    }

}