databse remote connection

express-server/db-connect/db-connect.js

@@ -38,13 +38,23 @@ async function newShoppinglist(name, description, username) {
 
     let sl_id = generate_sl_id();
 
+    //insert user if not exists
+
+    try {
+        await nonQuery('INSERT INTO "User" (username) VALUES ($1);', [username]);
+    } 
+    
+    catch (error) {
+        console.error(error);
+    }
+
     //insert shoppinglist
     try {
         await nonQuery('INSERT INTO "Shoppinglist" (sl_id, name, description) VALUES ($1, $2, $3);', [sl_id, name, description]);
     } 
     
     catch (error) {
-        console.error(error)
+        console.error(error);
     }
 
     //insert admin
@@ -53,10 +63,22 @@ async function newShoppinglist(name, description, username) {
     }  
     
     catch (error) {
-        console.error(error)
+        console.error(error);
     }
 }
 
+async function generateUser() {
+        //insert user
+
+        try {
+            await nonQuery('INSERT INTO "User" (username) VALUES ($1);', [username]);
+        } 
+        
+        catch (error) {
+            console.error(error);
+        }
+}
+
 
 //sl_id generieren
 function generate_sl_id() {