feat: refactored database configuration

configurations/nixos/defiant/configuration.nix

@@ -102,13 +102,6 @@
         directories = ["leyla_documents" "eve_documents" "users_documents" "media"];
       };
     };
-    postgres = {
-      extraUsers = {
-        leyla = {
-          isAdmin = true;
-        };
-      };
-    };
   };
 
   systemd.network = {
@@ -220,6 +213,12 @@
   };
 
   services = {
+    # PostgreSQL database server
+    postgresql = {
+      enable = true;
+      adminUsers = ["leyla"];
+    };
+
     # temp enable desktop environment for setup
     # Enable the X11 windowing system.
     xserver.enable = true;
@@ -327,7 +326,7 @@
       enable = true;
       domain = "home.jan-leila.com";
       openFirewall = true;
-      database = "postgres";
+      postgres.enable = true;
 
       extensions = {
         sonos.enable = true;