support postgresql as database option

server/db/pg/driver.ts

@@ -0,0 +1,17 @@
+import { drizzle as DrizzlePostgres } from "drizzle-orm/node-postgres";
+import { readConfigFile } from "@server/lib/readConfigFile";
+
+function createDb() {
+    const config = readConfigFile();
+
+    const connectionString = config.postgres?.connection_string;
+
+    if (!connectionString) {
+        throw new Error("Postgres connection string is not defined in the configuration file.");
+    }
+
+    return DrizzlePostgres(connectionString);
+}
+
+export const db = createDb();
+export default db;