feat: add uptime-kuma module

modules/hosts/alpha/config.nix

@@ -44,6 +44,12 @@
             domain = "lab.tux.rs";
           };
 
+          uptime-kuma = {
+            enable = true;
+            port = 1111;
+            domain = "status.lab.tux.rs";
+          };
+
           mediaflow-proxy = {
             enable = true;
             port = 8888;

modules/nixos/services/uptime-kuma.nix

@@ -0,0 +1,51 @@
+{
+  flake.modules.nixos.services =
+    {
+      config,
+      lib,
+      ...
+    }:
+    with lib;
+    let
+      cfg = config.tnix.services.uptime-kuma;
+      port = toString cfg.port;
+      acmeHost = config.tnix.services.nginx.domain;
+    in
+    {
+      options.tnix.services.uptime-kuma = {
+        enable = mkEnableOption "Uptime Kuma";
+
+        port = mkOption {
+          type = types.port;
+          default = 1111;
+          description = "Port on which Uptime Kuma listens";
+        };
+
+        domain = mkOption {
+          type = types.str;
+          default = "";
+          description = "Domain on which nginx serves Uptime Kuma (disabled when empty)";
+        };
+      };
+
+      config = mkIf cfg.enable {
+        services = {
+          uptime-kuma = {
+            enable = true;
+            settings = {
+              HOST = "127.0.0.1";
+              PORT = port;
+            };
+          };
+
+          nginx.virtualHosts.${cfg.domain} = mkIf (cfg.domain != "") {
+            forceSSL = acmeHost != "";
+            useACMEHost = mkIf (acmeHost != "") acmeHost;
+            locations."/" = {
+              proxyPass = "http://127.0.0.1:${port}";
+            };
+          };
+        };
+      };
+    };
+}