fix: optimize admin reports SQL queries for performance

Replace YEAR(time) with date range in userStats() to allow index usage,
switch history table from MyISAM to InnoDB for row-level locking,
add composite index on (time, action), fix GROUP BY to use PK.

Author: Volodymyr Panivko

docker-data/mysql/create-database.sql

@@ -68,8 +68,9 @@ CREATE TABLE `history` (
   KEY `userId` (`userId`),
   KEY `action` (`action`),
   KEY `standId` (`standId`),
-  KEY `pairActionId` (`pairActionId`)
-) ENGINE=MyISAM DEFAULT CHARSET=utf8;
+  KEY `pairActionId` (`pairActionId`),
+  KEY `idx_time_action` (`time`, `action`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
 
 
 -- THIS TABLE IS MISSED IN CODE, DO WE NEED IT?

src/Repository/HistoryRepository.php

@@ -62,6 +62,9 @@ public function dailyStats(): array
 
     public function userStats(int $year): array
     {
+        $yearStart = sprintf('%d-01-01 00:00:00', $year);
+        $yearEnd = sprintf('%d-01-01 00:00:00', $year + 1);
+
         $result = $this->db->query(
             "SELECT
                 users.userId,
@@ -72,11 +75,13 @@ public function userStats(int $year): array
             FROM users
             LEFT JOIN history ON users.userId=history.userId
             WHERE history.userId IS NOT NULL
-              AND YEAR(time) = :year
-            GROUP BY username
+              AND time >= :yearStart
+              AND time < :yearEnd
+            GROUP BY users.userId, users.userName
             ORDER BY totalActionCount DESC",
             [
-                'year' => $year,
+                'yearStart' => $yearStart,
+                'yearEnd' => $yearEnd,
                 'rentActionSum' => Action::RENT->value,
                 'returnActionSum' => Action::RETURN->value,
             ]