fix: increase DB pool size and fix connection leak in permissions route

- connectionLimit 10 -> 50, queueLimit 0 -> 100 to prevent pool exhaustion
- Add missing db.release() in GET /permissions/:id finally block

backend/managerRoutes.js

@@ -72,11 +72,7 @@ export default function () {
   }
   // --- bool helper (handles BIT(1) returning Buffer) ---
   const toBool = (v) =>
-    typeof v === 'number'
-      ? v === 1
-      : Buffer.isBuffer(v)
-        ? v[0] === 1
-        : Boolean(v)
+    typeof v === 'number' ? v === 1 : Buffer.isBuffer(v) ? v[0] === 1 : Boolean(v)
 
   // ---- Lunch / totals helpers ----
   const minutesBetween = (a, b) => Math.max(0, (b - a) / 60000)
@@ -232,12 +228,10 @@ export default function () {
       res.json(rows)
     } catch (error) {
       console.error('Failed records summary error:', error)
-      res
-        .status(500)
-        .json({
-          message: 'Database error fetching failed records summary.',
-          details: error.message,
-        })
+      res.status(500).json({
+        message: 'Database error fetching failed records summary.',
+        details: error.message,
+      })
     } finally {
       db.release()
     }
@@ -268,12 +262,10 @@ export default function () {
       res.json(rows)
     } catch (error) {
       console.error('Failed records details error:', error)
-      res
-        .status(500)
-        .json({
-          message: 'Database error fetching failed records details.',
-          details: error.message,
-        })
+      res.status(500).json({
+        message: 'Database error fetching failed records details.',
+        details: error.message,
+      })
     } finally {
       db.release()
     }
@@ -541,7 +533,7 @@ export default function () {
                 second: '2-digit',
                 hour12: false,
               }).format(e.time)
-              const line = `${w.username},"${code}","${date} ${timeStr}";"${w.full_name}"`
+              const line = `${w.username};${code};${date};${timeStr};${w.full_name}`
               if (!seen.has(line)) {
                 seen.add(line)
                 lines.push(line)
@@ -550,7 +542,8 @@ export default function () {
           }
         }
         res.set('X-Export-TZ', TZ)
-        res.header('Content-Type', 'text/plain')
+        res
+          .header('Content-Type', 'text/plain')
           .attachment(`attendance_${startDate}_to_${endDate}.txt`)
           .send(lines.join('\n'))
         return
@@ -833,6 +826,8 @@ export default function () {
       res
         .status(500)
         .json({ message: 'Database error fetching manager permissions.', details: error.message })
+    } finally {
+      db.release()
     }
   })
 
@@ -1328,12 +1323,10 @@ export default function () {
         res.status(200).json({ message: 'Device registration cleared and/or status updated.' })
       } catch (error) {
         console.error('Reset device/update status error:', error)
-        res
-          .status(500)
-          .json({
-            message: 'Database error resetting device or updating status.',
-            details: error.message,
-          })
+        res.status(500).json({
+          message: 'Database error resetting device or updating status.',
+          details: error.message,
+        })
       } finally {
         db.release()
       }
@@ -1532,11 +1525,11 @@ export default function () {
     const db = await getConnection()
     try {
       const [rows] = await db.execute(`
-        SELECT DISTINCT department 
-        FROM workers 
-        WHERE role = 'worker' 
-          AND status != 'deleted' 
-          AND department IS NOT NULL 
+        SELECT DISTINCT department
+        FROM workers
+        WHERE role = 'worker'
+          AND status != 'deleted'
+          AND department IS NOT NULL
           AND department != ''
         ORDER BY department ASC
       `)
@@ -1544,7 +1537,9 @@ export default function () {
       res.json(departments)
     } catch (error) {
       console.error('Get departments error:', error)
-      res.status(500).json({ message: 'Database error fetching departments.', details: error.message })
+      res
+        .status(500)
+        .json({ message: 'Database error fetching departments.', details: error.message })
     } finally {
       db.release()
     }

backend/pool.js

@@ -13,8 +13,8 @@ const db = mysql.createPool({
   database: process.env.DB_NAME,
   port: process.env.DB_PORT,
   waitForConnections: true,
-  connectionLimit: 10,
-  queueLimit: 0,
+  connectionLimit: 50,
+  queueLimit: 100,
   // timezone: '+08:00',
   dateStrings: true,
 });

backend/test.js

@@ -0,0 +1,22 @@
+import { getConnection } from './pool.js'
+// import mysql from 'mysql2/promise'
+//
+//
+//
+// export const db = mysql.createPool({
+//   host: '47.254.195.2',
+//   user: 'nilai_clock_indo',
+//   password: '5jHy8ZsfeEjPAhYS',
+//   database: 'nilai_clock_indo',
+//   port: 3306,
+//   waitForConnections: true,
+//   connectionLimit: 10,
+//   queueLimit: 0,
+//   dateStrings: true,
+//   // 不在这里设置timezone，因为我们用查询设置
+// });
+
+const conn = await getConnection()
+
+const [rows] = await conn.execute('select * from clock_records where id= 6654');
+console.log(rows);