From 9132b537fd93160f28819fd809f49b02b6df7c8f Mon Sep 17 00:00:00 2001
From: h7x4 <h7x4@nani.wtf>
Date: Thu, 8 May 2025 16:19:50 +0200
Subject: [PATCH] common/uptimed: add settings, sd_notify

---
 hosts/common/services/uptimed.nix | 59 +++++++++++++++++++++++++++++--
 1 file changed, 57 insertions(+), 2 deletions(-)

diff --git a/hosts/common/services/uptimed.nix b/hosts/common/services/uptimed.nix
index 2f4982f..9bc192c 100644
--- a/hosts/common/services/uptimed.nix
+++ b/hosts/common/services/uptimed.nix
@@ -1,4 +1,59 @@
-{ ... }:
+{ config, pkgs, lib, ... }:
+let
+  cfg = config.services.uptimed;
+in
 {
-  services.uptimed.enable = true;
+  options.services.uptimed.settings = lib.mkOption {
+    description = "";
+    default = { };
+    type = lib.types.submodule {
+      freeformType = with lib.types; attrsOf (either str (listOf str));
+    };
+  };
+
+  config = {
+    services.uptimed = {
+      enable = true;
+
+      settings = let
+        stateDir = "/var/lib/uptimed";
+      in {
+        PIDFILE = "${stateDir}/pid";
+        SENDMAIL = lib.mkDefault "${pkgs.system-sendmail}/bin/sendmail -t";
+      };
+    };
+
+    systemd.services.uptimed = lib.mkIf (cfg.enable) {
+      serviceConfig = let
+        uptimed = pkgs.uptimed.overrideAttrs (prev: {
+          postPatch = ''
+             substituteInPlace Makefile.am \
+               --replace-fail '$(sysconfdir)/uptimed.conf' '/var/lib/uptimed/uptimed.conf'
+             substituteInPlace src/Makefile.am \
+               --replace-fail '$(sysconfdir)/uptimed.conf' '/var/lib/uptimed/uptimed.conf'
+          '';
+        });
+
+      in {
+        Type = "notify";
+
+        ExecStart = lib.mkForce "${uptimed}/sbin/uptimed -f";
+
+        BindReadOnlyPaths = let
+          configFile = lib.pipe cfg.settings [
+            (lib.mapAttrsToList
+              (k: v:
+                if builtins.isList v
+                  then lib.mapConcatStringsSep "\n" (v': "${k}=${v'}") v
+                  else "${k}=${v}")
+            )
+            (lib.concatStringsSep "\n")
+            (pkgs.writeText "uptimed.conf")
+          ];
+        in [
+          "${configFile}:/var/lib/uptimed/uptimed.conf"
+        ];
+      };
+    };
+  };
 }