treewide: Group media services in modules/services/media

modules/services/media/jellyfin/default.nix

@@ -0,0 +1,66 @@
+# The Free Software Media System
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+let
+  cfg = config.my.services.jellyfin;
+  inherit (config.networking) domain;
+  # enable monitoring
+  jellyfin-with-metrics = pkgs.jellyfin.overrideAttrs (attrs: {
+    patches =
+      let
+        existingPatches = if attrs ? patches && builtins.isList attrs.patches then attrs.patches else [ ];
+      in
+      # with this patch the default setting for metrics is changed
+      existingPatches ++ [ ./enable-metrics.patch ];
+  });
+in
+{
+  options.my.services.jellyfin = {
+    enable = lib.mkEnableOption "Jellyfin Media Server";
+  };
+
+  config = lib.mkIf cfg.enable {
+    services.jellyfin = {
+      enable = true;
+      package = jellyfin-with-metrics;
+    };
+
+    services.prometheus = {
+      scrapeConfigs = [
+        {
+          job_name = "jellyfin";
+          static_configs = [
+            {
+              targets = [ "localhost:${toString cfg.port}" ];
+              labels = {
+                instance = config.networking.hostName;
+              };
+            }
+          ];
+        }
+      ];
+    };
+    # sadly the metrics do not contain application specific metrics, only c# -> no dashboard
+
+    my.services.webserver.virtualHosts = [
+      {
+        subdomain = "media";
+        # jellyfin does not allow modification
+        port = 8096;
+      }
+    ];
+
+    webapps.apps.jellyfin = {
+      dashboard = {
+        name = "Media";
+        category = "media";
+        icon = "eye";
+        url = "https://media.${domain}";
+      };
+    };
+  };
+}