<?php
/**
 * Piwik - Open source web analytics
 * 
 * @link http://piwik.org
 * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
 * 
 * @category Piwik_Plugins
 * @package Piwik_DBStats
 */

/**
 *
 * @package Piwik_DBStats
 */
class Piwik_DBStats extends Piwik_Plugin
{
	const TIME_OF_LAST_TASK_RUN_OPTION = 'dbstats_time_of_last_cache_task_run';
	
	public function getInformation()
	{
		return array(
			'description' => Piwik_Translate('DBStats_PluginDescription'),
			'author' => 'Piwik',
			'author_homepage' => 'http://piwik.org/',
			'version' => Piwik_Version::VERSION,
		);
	}

	function getListHooksRegistered()
	{
		return array(
			'AdminMenu.add' => 'addMenu',
            'TaskScheduler.getScheduledTasks' => 'getScheduledTasks',
		);
	}
	
	function addMenu()
	{
		Piwik_AddAdminSubMenu('CoreAdminHome_MenuDiagnostic', 'DBStats_DatabaseUsage', 
							array('module' => 'DBStats', 'action' => 'index'),
							Piwik::isUserIsSuperUser(),
							$order = 9);		
	}

	/**
	 * Gets all scheduled tasks executed by this plugin.
	 * 
	 * @param Piwik_Event_Notification $notification  notification object
	 */
	public function getScheduledTasks($notification)
	{
		$tasks = &$notification->getNotificationObject();

		$cacheDataByArchiveNameReportsTask = new Piwik_ScheduledTask(
			$this,
			'cacheDataByArchiveNameReports',
			null,
			new Piwik_ScheduledTime_Weekly(),
			Piwik_ScheduledTask::LOWEST_PRIORITY
		);
		$tasks[] = $cacheDataByArchiveNameReportsTask;
	}
	
	/**
	 * Caches the intermediate DataTables used in the getIndividualReportsSummary and
	 * getIndividualMetricsSummary reports in the option table.
	 */
	public function cacheDataByArchiveNameReports()
	{
		$api = Piwik_DBStats_API::getInstance();
		$api->getIndividualReportsSummary(true);
		$api->getIndividualMetricsSummary(true);
		
		$now = Piwik_Date::now()->getLocalized("%longYear%, %shortMonth% %day%");
		Piwik_SetOption(self::TIME_OF_LAST_TASK_RUN_OPTION, $now);
	}
	
	/** Returns the date when the cacheDataByArchiveNameReports was last run. */
	public static function getDateOfLastCachingRun()
	{
		return Piwik_GetOption(self::TIME_OF_LAST_TASK_RUN_OPTION);
	}
}
