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File: CounterReportJR1.inc.php
<?php

/**
 * @file plugins/reports/counter/classes/reports/CounterReportJR1.inc.php
 *
 * Copyright (c) 2014 University of Pittsburgh
 * Distributed under the GNU GPL v2 or later. For full terms see the file docs/COPYING.
 *
 * @class CounterReportJR1
 * @ingroup plugins_reports_counter
 *
 * @brief Journal Report 1
 */

import('plugins.reports.counter.classes.CounterReport');

class CounterReportJR1 extends CounterReport {
	/**
	 * Get the report title
	 * @return $string
	 */
	function getTitle() {
		return __('plugins.reports.counter.jr1.title');
	}

	/*
	 * Convert an OJS metrics request to COUNTER ReportItems
	 * @param $columns string|array column (aggregation level) selection
	 * @param $filters array report-level filter selection
	 * @param $orderBy array order criteria
	 * @param $range null|DBResultRange paging specification
	 * @see ReportPlugin::getMetrics for more details
	 * @return array COUNTER\ReportItem array
	 */
	function getReportItems($columns = array(), $filters = array(), $orderBy = array(), $range = null) {
		$metricsDao = DAORegistry::getDAO('MetricsDAO'); /* @var $metricsDao MetricsDAO */

		// Columns are fixed for this report
		$defaultColumns = array(STATISTICS_DIMENSION_MONTH, STATISTICS_DIMENSION_FILE_TYPE, STATISTICS_DIMENSION_CONTEXT_ID);
		if ($columns && array_diff($columns, $defaultColumns)) {
			$this->setError(new Exception(__('plugins.reports.counter.exception.column'), COUNTER_EXCEPTION_WARNING | COUNTER_EXCEPTION_BAD_COLUMNS));
		}
		// Check filters for correct context(s)
		$validFilters = $this->filterForContext($filters);
		// Filters defaults to last month, but can be provided by month or by day
		if (!isset($filters[STATISTICS_DIMENSION_MONTH]) && !isset($filters[STATISTICS_DIMENSION_DAY])) {
			$validFilters[STATISTICS_DIMENSION_MONTH] = array(
				'from' => date_format(date_create("first day of previous month"), 'Ymd'),
				'to' => date_format(date_create("last day of previous month"), 'Ymd')
				);
		} elseif (isset($filters[STATISTICS_DIMENSION_MONTH])) {
			$validFilters[STATISTICS_DIMENSION_MONTH] = $filters[STATISTICS_DIMENSION_MONTH];
			unset($filters[STATISTICS_DIMENSION_MONTH]);
		} elseif (isset($filters[STATISTICS_DIMENSION_DAY])) {
			$validFilters[STATISTICS_DIMENSION_DAY] = $filters[STATISTICS_DIMENSION_DAY];
			unset($filters[STATISTICS_DIMENSION_DAY]);
		}
		if (!isset($filters[STATISTICS_DIMENSION_ASSOC_TYPE])) {
			$validFilters[STATISTICS_DIMENSION_ASSOC_TYPE] = ASSOC_TYPE_SUBMISSION_FILE;
			unset($filters[STATISTICS_DIMENSION_ASSOC_TYPE]);
		} elseif ($filters[STATISTICS_DIMENSION_ASSOC_TYPE] != ASSOC_TYPE_SUBMISSION_FILE) {
			$this->setError(new Exception(__('plugins.reports.counter.exception.filter'), COUNTER_EXCEPTION_ERROR | COUNTER_EXCEPTION_BAD_FILTERS));
		}
		// Any further filters aren't recognized (at this time, at least)
		if (array_keys($filters)) {
			$this->setError(new Exception(__('plugins.reports.counter.exception.filter'), COUNTER_EXCEPTION_WARNING | COUNTER_EXCEPTION_BAD_FILTERS));
		}
		// Metric type is ojs::counter
		$metricType = METRIC_TYPE_COUNTER;
		// Ordering must be by Journal (ReportItem), and by Month (ItemPerformance) for JR1
		$validOrder = array(STATISTICS_DIMENSION_CONTEXT_ID => STATISTICS_ORDER_DESC, STATISTICS_DIMENSION_MONTH => STATISTICS_ORDER_ASC);
		// TODO: range
		$results = $metricsDao->getMetrics($metricType, $defaultColumns, $validFilters, $validOrder);
		$reportItems = array();
		if ($results) {
			// We'll create a new Report Item with these Metrics on a journal change
			$metrics = array();
			// We'll create a new Metric with these Performance Counters on a period change
			$counters = array();
			$lastPeriod = 0;
			$lastJournal = 0;
			foreach ($results as $rs) {
				// Identify the type of request
				$metricTypeKey = $this->getKeyForFiletype($rs[STATISTICS_DIMENSION_FILE_TYPE]);
				// Period changes or greater trigger a new ItemPerformace metric
				if ($lastPeriod != $rs[STATISTICS_DIMENSION_MONTH] || $lastJournal != $rs[STATISTICS_DIMENSION_CONTEXT_ID]) {
					if ($lastPeriod != 0) {
						$metrics[] = $this->createMetricByMonth($lastPeriod, $counters);
						$counters = array();
					}
				}
				$lastPeriod = $rs[STATISTICS_DIMENSION_MONTH];
				$counters[] = new COUNTER\PerformanceCounter($metricTypeKey, $rs[STATISTICS_METRIC]);
				// Journal changes trigger a new ReportItem
				if ($lastJournal != $rs[STATISTICS_DIMENSION_CONTEXT_ID]) {
					if ($lastJournal != 0 && $metrics) {
						$item = $this->_createReportItem($lastJournal, $metrics);
						if ($item) {
							$reportItems[] = $item;
						} else {
							$this->setError(new Exception(__('plugins.reports.counter.exception.partialData'), COUNTER_EXCEPTION_WARNING | COUNTER_EXCEPTION_PARTIAL_DATA));
						}
						$metrics = array();
					}
				}
				$lastJournal = $rs[STATISTICS_DIMENSION_CONTEXT_ID];
			}
			// Capture the last unprocessed ItemPerformance and ReportItem entries, if applicable
			if ($counters) {
				$metrics[] = $this->createMetricByMonth($lastPeriod, $counters);
			}
			if ($metrics) {
				$item = $this->_createReportItem($lastJournal, $metrics);
				if ($item) {
					$reportItems[] = $item;
				} else {
					$this->setError(new Exception(__('plugins.reports.counter.exception.partialData'), COUNTER_EXCEPTION_WARNING | COUNTER_EXCEPTION_PARTIAL_DATA));
				}
			}
		} else {
			$this->setError(new Exception(__('plugins.reports.counter.exception.noData'), COUNTER_EXCEPTION_ERROR | COUNTER_EXCEPTION_NO_DATA));
		}
		return $reportItems;
	}

	/**
	 * Given a journalId and an array of COUNTER\Metrics, return a COUNTER\ReportItems
	 * @param int $journalId
	 * @param array $metrics COUNTER\Metric array
	 * @return mixed COUNTER\ReportItems or false
	 */
	private function _createReportItem($journalId, $metrics) {
		$journalDao = DAORegistry::getDAO('JournalDAO'); /* @var $journalDao JournalDAO */
		$journal = $journalDao->getById($journalId);
		if (!$journal) {
			return false;
		}
		$journalName = $journal->getLocalizedName();
		$journalPubIds = array();
		foreach (array('print', 'online') as $issnType) {
			if ($journal->getData($issnType.'Issn')) {
				try {
					$journalPubIds[] = new COUNTER\Identifier(ucfirst($issnType).'_ISSN', $journal->getData($issnType.'Issn'));
				} catch (Exception $ex) {
					// Just ignore it
				}
			}
		}
		$journalPubIds[] = new COUNTER\Identifier(COUNTER_LITERAL_PROPRIETARY, $journal->getPath());
		$reportItem = array();
		try {
			$reportItem = new COUNTER\ReportItems(__('common.software'), $journalName, COUNTER_LITERAL_JOURNAL, $metrics, NULL, $journalPubIds);
		} catch (Exception $e) {
			$this->setError($e, COUNTER_EXCEPTION_ERROR | COUNTER_EXCEPTION_INTERNAL);
		}
		return $reportItem;
	}

}