feat(11): adding reverse proxy to module

11-single-price-grid-component/default.nix

@@ -43,6 +43,12 @@ let
           default = "localhost";
           description = "Host to bind to.";
         };
+
+        useNginx = lib.mkOption {
+          type = lib.types.bool;
+          default = true;
+          description = "Whether to use Nginx to proxy requests.";
+        };
       };
       config = lib.mkIf cfg.enable {
         users.groups.price-grid-app-group = { };
@@ -51,7 +57,9 @@ let
           group = "price-grid-app-group";
         };
 
-        systemd.services.price-grid-app = {
+        systemd.services.price-grid-app =
+          let serverHost = if cfg.useNginx then "localhost" else cfg.host;
+        in {
           description = "My Java Service";
           wantedBy = [ "multi-user.target" ];
           after = [ "network.target" ];
@@ -59,13 +67,22 @@ let
           startLimitBurst = 10;
           serviceConfig = {
             ExecStart =
-              "${pkgs.jdk}/bin/java -jar ${package}/bin/priceGridApp.jar -p ${toString cfg.port} --host ${cfg.host}";
+              "${pkgs.jdk}/bin/java -jar ${package}/bin/priceGridApp.jar -p ${
+                toString cfg.port
+              } --host ${serverHost}";
             WorkingDirectory = "${package}/bin";
             Restart = "on-failure";
             User = "price-grid-app-user";
             Group = "price-grid-app-group";
           };
         };
+
+        services.nginx = lib.mkIf cfg.useNginx {
+          recommendedTlsSettings = true;
+          virtualHosts.${cfg.host} = {
+            locations."/".proxyPass = "http://localhost:${cfg.port}";
+          };
+        };
       };
     };
 in {