Update folders

src/Core/DBHandler/DBLogin.cpp

@@ -0,0 +1,40 @@
+#include "DBLogin.hpp"
+#include <iostream>
+
+DBLogin::DBLogin(std::string connStr) : DBHandler(connStr) {};
+
+
+
+/*
+
+return 1 if admin | 0 if not admin | -1 if failed
+
+*/
+
+int DBLogin::checkValidLogin(std::string id, std::string pw) {
+
+    try {
+        pqxx::work worker(connectionObject);
+
+        std::string query =
+            "SELECT admin FROM studenten_veranstalter WHERE id = $1 AND passwort = $2";
+
+        pqxx::result response = worker.exec_params(query, id, pw);
+
+        if (response.affected_rows() > 0) {
+
+           
+            if (response[0][0].is_null())
+                return 0;
+            return response[0][0].as<bool>();
+
+        }
+
+        return -1;
+    }
+    catch (const std::exception& e) {
+        std::cerr << "Error: " << e.what() << std::endl;
+    }
+
+}
+