feat: enhance CSV import functionality, integrate react-query for data fetching, and refactor admin components

backend/server.js

@@ -40,8 +40,8 @@ app.get("/table-data", authenticate, async (req, res) => {
 });
 
 app.post("/create-entry", async (req, res) => {
-  const result = await createEntry(req.body);
-  if (result.success) {
+  const result = await createEntry(req.body.losnummer);
+  if (result) {
     res.status(201).json({ success: true });
   } else {
     res.status(400).json({ success: false });

backend/services/database.js

@@ -51,18 +51,23 @@ export async function getTableData() {
   return { success: false };
 }
 
-export async function createEntryCSV(file) {
-  // Implement CSV creation logic here
-}
+// Create data from array not working !!!
 
 export async function createEntry(data) {
-  const [result] = await pool.query("INSERT INTO lose (losnummer) VALUES (?)", [
-    data.losnummer,
-  ]);
+  let { status } = { status: true };
+  for (const item of data) {
+    const [result] = await pool.query(
+      "INSERT INTO lose (losnummer) VALUES (?)",
+      [item]
+    );
 
-  if (result.affectedRows > 0) {
-    return { success: true };
-  } else {
-    return { success: false };
+    if (result.affectedRows > 0) {
+      status = true;
+    } else {
+      status = false;
+      return status;
+    }
   }
+
+  return status;
 }