Basic demonstrator

Works fine but can be slow, especially because of heavy IO.

main.cpp

@@ -0,0 +1,56 @@
+#include <iostream>
+#include <sqlite3.h>
+#include <ctime>
+
+#include "db_info.h"
+#include "LicenceOperations.h"
+
+int main()
+{
+    char* errorMessage = nullptr;
+    int errorCode;
+    sqlite3* db = nullptr;
+
+    if (sqlite3_open(dbName.c_str(), &db)) {
+        std::cerr << "Error opening database : " << std::endl << sqlite3_errmsg(db) << std::endl;
+        sqlite3_close(db);
+        return -1;
+    }
+
+    std::time_t startTime = std::time(nullptr);
+
+    errorCode = sqlite3_exec(db, "BEGIN TRANSACTION;", nullptr, nullptr, &errorMessage);
+    if (errorCode) {
+        dbError("Error while beginning transaction", errorMessage);
+        sqlite3_close(db);
+        return -1;
+    }
+
+    errorCode = sqlite3_exec(db, ("SELECT "
+                                  + keyColumn + ", "
+                                  + pointsColumn + ", "
+                                  + countdownColumn + ", "
+                                  + onePointCountdownColumn + ", "
+                                  + tenYearsCountdownColumn
+                                  + " FROM " + pointsTable
+                                  + " WHERE " + pointsColumn + " > 0 AND " + pointsColumn + " < 12;").c_str(),
+                             countdown, db, &errorMessage);
+    if (errorCode) {
+        dbError("Error while running coutdowns", errorMessage);
+        sqlite3_close(db);
+        return -1;
+    }
+
+    errorCode = sqlite3_exec(db, "END TRANSACTION;", nullptr, nullptr, &errorMessage);
+    if (errorCode) {
+        dbError("Error while closing transaction", errorMessage);
+        sqlite3_close(db);
+        return -1;
+    }
+
+
+    std::cout << "Successfully updated database in " << std::time(nullptr) - startTime << "s" << std::endl;
+
+    sqlite3_close(db);
+    return 0;
+}