/**
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.airavata.model.util;

import org.apache.airavata.model.appcatalog.groupresourceprofile.ComputeResourceReservation;
import org.apache.airavata.model.appcatalog.groupresourceprofile.EnvironmentSpecificPreferences;
import org.apache.airavata.model.appcatalog.groupresourceprofile.GroupComputeResourcePreference;
import org.apache.airavata.model.appcatalog.groupresourceprofile.ResourceType;
import org.apache.airavata.model.appcatalog.groupresourceprofile.SlurmComputeResourcePreference;

public class GroupComputeResourcePreferenceUtil {

    public static ComputeResourceReservation getActiveReservationForQueue(
            GroupComputeResourcePreference groupComputeResourcePreference, String queueName) {

        // Only SLURM has reservations
        if (groupComputeResourcePreference.getResourceType() != ResourceType.SLURM) {
            return null;
        }

        EnvironmentSpecificPreferences esp = groupComputeResourcePreference.getSpecificPreferences();
        if (esp == null || !esp.isSetSlurm()) {
            return null;
        }

        SlurmComputeResourcePreference slurm = esp.getSlurm();
        if (!slurm.isSetReservations() || slurm.getReservationsSize() == 0) {
            return null;
        }

        long now = System.currentTimeMillis();
        for (ComputeResourceReservation reservation : slurm.getReservations()) {
            if (reservation.getQueueNames().contains(queueName)
                    && now > reservation.getStartTime()
                    && now < reservation.getEndTime()) {
                return reservation;
            }
        }
        return null;
    }
}
