feat: enhance CSV upload handling with chunked requests and token support; improve form input limits

backend/services/database.js

@@ -52,22 +52,28 @@ export async function getTableData() {
 }
 
 export async function createEntry(data) {
-  let { status } = { status: true };
-  for (const item of data) {
+  if (!Array.isArray(data) || data.length === 0) return true;
+
+  // Normalize values to strings and unique them to reduce duplicates
+  const values = Array.from(
+    new Set(data.map((v) => String(v).trim()).filter(Boolean))
+  );
+
+  // Prepare bulk insert values [[v1],[v2],...]
+  const rows = values.map((v) => [v]);
+
+  try {
+    // Use INSERT IGNORE to skip duplicates on UNIQUE(losnummer)
     const [result] = await pool.query(
-      "INSERT INTO lose (losnummer) VALUES (?)",
-      [item]
+      "INSERT IGNORE INTO lose (losnummer) VALUES ?",
+      [rows]
     );
-
-    if (result.affectedRows > 0) {
-      status = true;
-    } else {
-      status = false;
-      return status;
-    }
+    // result.affectedRows may be less than rows.length if duplicates existed
+    return true;
+  } catch (e) {
+    console.error("Bulk insert failed", e);
+    return false;
   }
-
-  return status;
 }
 
 export async function removeEntries(losnummern) {