/**
 * Copyright (c) 2009--2012 Red Hat, Inc.
 *
 * This software is licensed to you under the GNU General Public License,
 * version 2 (GPLv2). There is NO WARRANTY for this software, express or
 * implied, including the implied warranties of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. You should have received a copy of GPLv2
 * along with this software; if not, see
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
 *
 * Red Hat trademarks are not licensed under GPLv2. No permission is
 * granted to use or replicate Red Hat trademarks that are incorporated
 * in this software or its documentation.
 */
package com.redhat.rhn.manager.task;

import com.redhat.rhn.common.db.datasource.DataResult;
import com.redhat.rhn.common.db.datasource.ModeFactory;
import com.redhat.rhn.common.db.datasource.SelectMode;
import com.redhat.rhn.domain.channel.Channel;
import com.redhat.rhn.frontend.dto.PackageCapabilityDto;
import com.redhat.rhn.frontend.dto.PackageChangelogDto;
import com.redhat.rhn.frontend.dto.PackageDto;
import com.redhat.rhn.taskomatic.task.TaskConstants;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

/**
 *
 * TaskManager
 * @version $Rev$
 */
public class TaskManager {


    private TaskManager() {

    }

    /**
     *  Get the channel package list for a channel
     * @param channel channel info
     * @return the iterator
     */
    public static DataResult<PackageDto> getChannelPackageDtos(Channel channel) {
        SelectMode m = ModeFactory.getMode(TaskConstants.MODE_NAME,
                TaskConstants.TASK_QUERY_REPOMD_GENERATOR_CHANNEL_PACKAGES);
        Map<String, Object> params = new HashMap<String, Object>();
        params.put("channel_id", channel.getId());
        return m.execute(params);
    }

    /**
     * Get capabilities of a certain type for a package
     * @param packageId the package's id
     * @param query the query to execute
     * @return a collection of capabilities
     */
    public static Collection<PackageCapabilityDto> getPackageCapabilityDtos(
            Long packageId, String query) {
        SelectMode m = ModeFactory.getMode(TaskConstants.MODE_NAME, query);
        Map<String, Object> params = new HashMap<String, Object>();
        params.put("package_id", packageId);
        return m.execute(params);
    }

    /**
     * Get changelog entries for a particular package
     * @param packageId the package's id
     * @return a collection of changelogs
     */
    public static Collection<PackageChangelogDto> getPackageChangelogDtos(
            Long packageId) {
        SelectMode m = ModeFactory.getMode(TaskConstants.MODE_NAME,
                TaskConstants.TASK_QUERY_REPOMD_GENERATOR_PACKAGE_CHANGELOG);
        Map<String, Object> params = new HashMap<String, Object>();
        params.put("package_id", packageId);
        return m.execute(params);
    }

    /**
     * Return task status info
     * @return task status info
     */
    public static DataResult getTaskStatusInfo() {
        SelectMode m = ModeFactory.getMode("Task_queries", "taskomatic_task_status");
        return m.execute(new HashMap());
    }
}