- new "activity log" for user actions (create/update/delete) of (systems/connections/signatures), resolves #280, relates #271

- new added cronjob to delete old statistics data (older 1 year) (weekly)
- updated main menu structure (added new headlines,...)
- updated "feature page", added new section for "statistics"
- updated "system delete" function. systems with no changes (description/alias) will now get deleted instead of set "active = 0", #184
- changed max expire time from file caching (/tmp/cache) from 20d -> 10d
- changed "character log" TTL from 10s to 5s
- changed cronjob interval for "deleteExpiredData" from "weekly" to "downtime"
- changed "delete" icon (e.g. context menu on map) from "eraser" to "trash"
- removed cronjob output logging (cron_deactivateMapData.log)
- fixed non click-able character panels on login page, closed #332

app/main/controller/logcontroller.php

@@ -7,10 +7,128 @@
  */
 
 namespace controller;
+use DB;
 
+class LogController extends \Prefab  {
 
-class LogController extends Controller  {
+    /**
+     * buffered activity log data for this singleton LogController() class
+     * -> this buffered data can be stored somewhere (e.g. DB) before HTTP response
+     * -> should be cleared afterwards!
+     * @var array
+     */
+    protected $activityLogBuffer = [];
 
+    /**
+     * reserve a "new" character activity for logging
+     * @param $characterId
+     * @param $mapId
+     * @param $action
+     */
+    public function bufferActivity($characterId, $mapId, $action){
+        $characterId    = (int)$characterId;
+        $mapId          = (int)$mapId;
+
+        if(
+            $characterId > 0 &&
+            $mapId > 0
+        ){
+            $key = $this->getBufferedActivityKey($characterId, $mapId);
+
+            if( is_null($key) ){
+                $activity = [
+                    'characterId' => $characterId,
+                    'mapId' => $mapId,
+                    $action => 1
+                ];
+                $this->activityLogBuffer[] = $activity;
+            }else{
+                $this->activityLogBuffer[$key][$action]++;
+            }
+        }
+    }
+
+    /**
+     * store all buffered activity log data to DB
+     */
+    public function storeActivities(){
+        if( !empty($this->activityLogBuffer) ){
+            $db = DB\Database::instance()->getDB('PF');
+
+            $quoteStr = function($str) use ($db) {
+                return $db->quotekey($str);
+            };
+
+            $placeholderStr = function($str){
+                return ':' . $str;
+            };
+
+            $updateRule = function($str){
+                return $str . " = " . $str . " + VALUES(" . $str . ")";
+            };
+
+            $year = (int)date('o');
+            $yearWeek = (int)date('W');
+            $db->begin();
+
+            foreach($this->activityLogBuffer as $activityData){
+                $activityData['year'] = $year;
+                $activityData['week'] = $yearWeek;
+
+                $columns = array_keys($activityData);
+                $columnsQuoted = array_map($quoteStr, $columns);
+                $placeholder = array_map($placeholderStr, $columns);
+                $args = array_combine($placeholder, $activityData);
+
+                // "filter" columns that can be updated
+                $columnsForUpdate = array_diff($columns, ['year', 'week', 'characterId', 'mapId']);
+                $updateSql = array_map($updateRule, $columnsForUpdate);
+
+                $sql = "INSERT DELAYED INTO 
+                        activity_log (" . implode(', ', $columnsQuoted) . ") values(
+                            " . implode(', ', $placeholder) . "
+                        ) 
+                    ON DUPLICATE KEY UPDATE
+                        updated = NOW(),
+                        " . implode(', ', $updateSql) . "
+                    ";
+
+                $db->exec($sql, $args);
+            }
+
+            $db->commit();
+
+            // clear activity data for this instance
+            $this->activityLogBuffer = [];
+        }
+    }
+
+    /**
+     * get array key from "buffered activity log" array
+     * @param int $characterId
+     * @param int $mapId
+     * @return int|null
+     */
+    private function getBufferedActivityKey($characterId, $mapId){
+        $activityKey    = null;
+
+        if(
+            $characterId > 0 &&
+            $mapId > 0
+        ){
+            foreach($this->activityLogBuffer as $key => $activityData){
+                if(
+                    $activityData['characterId'] === $characterId &&
+                    $activityData['mapId'] === $mapId
+                ){
+                    $activityKey = $key;
+                    break;
+                }
+            }
+        }
+
+        return $activityKey;
+    }
 
     /**
      * get Logger instance