feat: add po_token and visitor_data to invidious

Been having some invidious issues. So going to try to add `po_token` and
`visitor_data` to the config to smooth things out. 

NOTE: There are privacy implications here. Going to eat it for now.

Also kudos to whoever made the services.invidious.extraSettingsFile
option. You are my hero.

components/mediacenter/invidious/default.nix

@@ -1,65 +1,98 @@
 {
   lib,
   config,
+  self,
   pkgsUnstable,
   ...
-}: let
+}:
+let
   inherit (lib) mkIf optionalString;
 
   cfg = config.components.mediacenter.invidious;
   caddyEnabled = config.components.caddy.enable;
-in {
+
+  user = "invidious";
+  group = user;
+in
+{
   config = mkIf cfg.enable {
     services.invidious = {
       enable = true;
       package = pkgsUnstable.invidious;
 
       domain = optionalString caddyEnabled "yt.ajax.casa";
-      address =
-        if caddyEnabled
-        then "127.0.0.1"
-        else "0.0.0.0";
+      address = if caddyEnabled then "127.0.0.1" else "0.0.0.0";
       port = 3111;
 
       settings = {
-        db.user = "invidious";
+        db.user = user;
         https_only = caddyEnabled;
         external_port = optionalString caddyEnabled 443;
         popular_enabled = false;
       };
 
+      extraSettingsFile = config.age.secrets."invidious/config.extra.yml".path;
+
       http3-ytproxy = {
         enable = true;
         package = pkgsUnstable.http3-ytproxy;
       };
     };
 
-    systemd.services.http3-ytproxy = {
-      serviceConfig.User = mkIf caddyEnabled config.services.caddy.user;
-      environment.DISABLE_WEBP = "1";
+    systemd.services = {
+      http3-ytproxy = {
+        serviceConfig.User = mkIf caddyEnabled config.services.caddy.user;
+        environment.DISABLE_WEBP = "1";
+      };
+      invidious.serviceConfig = {
+        User = user;
+        Group = group;
+      };
+    };
+
+    users.users.${user} = {
+      inherit group;
+      isSystemUser = true;
     };
+    users.groups.${group} = { };
+
+    services.caddy.virtualHosts = mkIf caddyEnabled (
+      let
+        inherit (config.services.invidious) address domain port;
+      in
+      {
+        "https://${domain}".extraConfig = ''
+          encode gzip zstd
+          reverse_proxy http://${address}:${toString port}
+          import cloudflare
 
-    services.caddy.virtualHosts = mkIf caddyEnabled (let
-      inherit (config.services.invidious) address domain port;
-    in {
-      "https://${domain}".extraConfig = ''
-        encode gzip zstd
-        reverse_proxy http://${address}:${toString port}
-        import cloudflare
+          log {
+              output discard
+          }
 
-        @ytproxy path_regexp ytproxy ^/videoplayback|^/vi/|^/ggpht/|^/sb/
-        reverse_proxy @ytproxy unix//run/http3-ytproxy/socket/http-proxy.sock {
-            header_up X-Forwarded-For ""
-            header_up CF-Connecting-IP ""
-            header_down -alt-svc
-            header_down -Cache-Control
-            header_down -etag
-            header_down Cache-Control "private"
-            transport http {
-                versions 1.1
-            }
-        }
-      '';
-    });
+          @ytproxy path_regexp ytproxy ^/videoplayback|^/vi/|^/ggpht/|^/sb/
+          reverse_proxy @ytproxy unix//run/http3-ytproxy/socket/http-proxy.sock {
+              header_up X-Forwarded-For ""
+              header_up CF-Connecting-IP ""
+              header_down -alt-svc
+              header_down -Cache-Control
+              header_down -etag
+              header_down Cache-Control "private"
+              transport http {
+                  versions 1.1
+              }
+          }
+        '';
+      }
+    );
+
+    age.secrets = {
+      "invidious/extraSettingsFile" = {
+        file = "${self}/secrets/invidious/extraSettingsFile.age";
+        mode = "440";
+        owner = user;
+        inherit group;
+      };
+    };
   };
 }

secrets/secrets.nix

@@ -19,6 +19,9 @@ in {
   # immich
   "immich/.env.age".publicKeys = allKeys;
 
+  # invidious
+  "invidious/extraSettingsFile.age".publicKeys = allKeys;
+
   # libation
   "libation/Settings.json.age".publicKeys = allKeys;
   "libation/AccountsSettings.json.age".publicKeys = allKeys;