move refinery to 'common'

common/refinery.nix

@@ -0,0 +1,51 @@
+# Example configuration:
+#  host: deemz.org
+#  refineryBaseUrl: /refinery
+
+{ config, pkgs, refineryHost, refineryBaseUrl, ... }:
+{
+  # reverse proxy
+  services.nginx = {
+    enable = true;
+
+    virtualHosts.${refineryHost} = {
+
+      locations."${refineryBaseUrl}/" = {
+        proxyPass = "http://127.0.0.1:8888/";
+        proxyWebsockets = true;
+        extraConfig = ''
+          charset UTF-8;
+          more_set_headers 'Server: NIXOS';
+        '';
+      };
+
+      locations."${refineryBaseUrl}/api/" = {
+        proxyPass = "http://127.0.0.1:8888/api/";
+        extraConfig = ''
+          chunked_transfer_encoding off;
+          proxy_buffering off;
+          proxy_cache off;
+        '';
+      };
+
+      serverName = refineryHost;
+    };
+  };
+
+  # run refinery container as a systemd service
+  virtualisation.oci-containers.containers = {
+    refinery = {
+      image = "ghcr.io/graphs4value/refinery:0.2.1-snapshot";
+      ports = [ "127.0.0.1:8888:8888" ];
+      environment = rec {
+        REFINERY_PUBLIC_HOST = refineryHost;
+        REFINERY_WEBSOCKET_URL = "wss://${refineryHost}${refineryBaseUrl}/xtext-service";
+        REFINERY_API_BASE = "https://${refineryHost}${refineryBaseUrl}/api/v1/";
+
+        # Timeouts
+        REFINERY_MODEL_GENERATION_TIMEOUT_SEC = "60";
+        REFINERY_MODEL_GENERATION_THREAD_COUNT = "10";
+      };
+    };
+  };
+}