Add getPlagiarismRecordsCount function, and show open case count

src/Controller/AppController.php

@@ -106,6 +106,21 @@ public function feedAction(
 		// Add the logged in user's rights to the response, so we can conditionally show links for sysops.
 		$ret['user_rights'] = $currentUser ? $wikiRepo->getUserRights( $currentUser->username ) : [];
 
+		$open_records_count = $copyPatrolRepo->getPlagiarismRecordsCount(
+			array_merge(
+				$options,
+				[
+					'filter' => CopyPatrolRepository::FILTER_OPEN
+				]
+			)
+		);
+		// If there are 200 (or more) open records, we just show "200+".
+		if ( $open_records_count >= 200 ) {
+			$ret['open_records_count'] = "200+";
+		} else {
+			$ret['open_records_count'] = $open_records_count;
+		}
+
 		return $this->render( 'feed.html.twig', $ret );
 	}
 

src/Repository/CopyPatrolRepository.php

@@ -4,6 +4,7 @@
 
 namespace App\Repository;
 
+use DateInterval;
 use Doctrine\DBAL\Cache\QueryCacheProfile;
 use Doctrine\DBAL\Connection;
 use Doctrine\DBAL\ParameterType;
@@ -128,6 +129,42 @@ public function getPlagiarismRecords( array $options = [], int $limit = 50 ): ar
 			->fetchAllAssociative();
 	}
 
+	/**
+	 * Fetch the count of records from the CopyPatrol database, up to $limit.
+	 *
+	 * @param array $options filter and filter user options, should look like:
+	 *   string 'filter' Filter to show a certain status: 'all', 'open', or 'reviewed'
+	 *   string 'filter_user' Filter SQL to only return records reviewed by given user
+	 *   string 'filter_page' Search string (page title)
+	 *   boolean 'drafts' returns only records that are in the Draft namespace
+	 *   integer 'last_id' offset of where to start fetching records, going by 'diff_id'
+	 *   integer 'id' exact submission_id of a record. This will override all other filter options
+	 *   string 'lang' The language code of the Wikipedia to query for
+	 * @param int $limit Number of records asked for
+	 * @param string $cacheExpiry Cache expiry time (default 15 minutes)
+	 * @return int Count of CopyPatrol db records.
+	 */
+	public function getPlagiarismRecordsCount(
+		array $options = [],
+		int $limit = 200,
+		string $cacheExpiry = 'PT15M'
+	): int {
+		// If the count is already cached, return it
+		if ( $this->cache->hasItem( md5( serialize( $options ) . $limit ) ) ) {
+			return $this->cache->getItem( md5( serialize( $options ) . $limit ) )->get();
+		}
+
+		// Else, calculate the count and cache it
+		$count = count( $this->getPlagiarismRecords( $options, $limit ) );
+		$cacheItem = $this->cache
+			->getItem( md5( serialize( $options ) . $limit ) )
+			->set( $count )
+			// cache for 15 minutes
+			->expiresAfter( new DateInterval( $cacheExpiry ) );
+		$this->cache->save( $cacheItem );
+		return $this->cache->getItem( md5( serialize( $options ) . $limit ) )->get();
+	}
+
 	/**
 	 * Get the top reviewers over the past last 7 days, 30 days, and all-time.
 	 *

templates/base.html.twig

@@ -52,7 +52,7 @@
 									<label>
 										<input type="radio" name="filter" value="{{ type }}"
 											{% if filter == type %} checked="checked"{% endif %}
-										/> {{ msg('form-'~type) }}
+										/> {{ msg('form-'~type) }} {% if type == "open" %} (<span id="open_records_count" data-count="{{ open_records_count }}">{{ open_records_count }}</span>) {% endif %}
 									</label>
 								</span>
 							{% endfor %}