feat: add gamification endpoints for driver behavior

ride/gamification/getLeaderboard.php

@@ -0,0 +1,54 @@
+<?php
+require_once __DIR__ . '/../../connect.php';
+
+$type = isset($_POST['type']) ? filterRequest("type") : 'trips';
+
+if ($type === 'earnings') {
+    $sql = "
+        SELECT 
+            d.id as driver_id,
+            COALESCE(d.name, d.nameArabic, d.firstName, 'Driver') as name,
+            d.personal_photo as photoUrl,
+            COALESCE(SUM(p.amount), 0) as value
+        FROM `driver` d
+        JOIN `payments` p ON d.id = p.driverID
+        WHERE p.created_at >= DATE(NOW() - INTERVAL WEEKDAY(NOW()) DAY)
+        GROUP BY d.id
+        ORDER BY value DESC
+        LIMIT 10
+    ";
+} else {
+    // Default to trips
+    $sql = "
+        SELECT 
+            d.id as driver_id,
+            COALESCE(d.name, d.nameArabic, d.firstName, 'Driver') as name,
+            d.personal_photo as photoUrl,
+            COUNT(r.id) as value
+        FROM `driver` d
+        JOIN `ride` r ON d.id = r.driver_id
+        WHERE r.status = 'Finished' 
+          AND r.created_at >= DATE(NOW() - INTERVAL WEEKDAY(NOW()) DAY)
+        GROUP BY d.id
+        ORDER BY value DESC
+        LIMIT 10
+    ";
+}
+
+$stmt = $con->prepare($sql);
+$stmt->execute();
+
+if ($stmt->rowCount() > 0) {
+    $rows = $stmt->fetchAll(PDO::FETCH_ASSOC);
+    
+    // Add Rank manually to support older MySQL versions
+    $rank = 1;
+    foreach ($rows as &$row) {
+        $row['rank'] = $rank++;
+    }
+    
+    jsonSuccess($rows);
+} else {
+    jsonSuccess([]);
+}
+?>