From c9438566c8b67b353623942ae01219b1b94a1e04 Mon Sep 17 00:00:00 2001
From: Kate Temkin <kate@deprekated.net>
Date: Thu, 12 Jun 2025 02:15:11 +0200
Subject: [PATCH] trailblazer: update command script to send status, too

---
 nixos/hosts/trailblazer/default.nix | 49 ++++++++++++++++++++++++++++-
 1 file changed, 48 insertions(+), 1 deletion(-)

diff --git a/nixos/hosts/trailblazer/default.nix b/nixos/hosts/trailblazer/default.nix
index 8e9386c..7c2639a 100644
--- a/nixos/hosts/trailblazer/default.nix
+++ b/nixos/hosts/trailblazer/default.nix
@@ -65,7 +65,36 @@ let
 
         print("[I] Everything should be... well, not-shiny, captain!")
 
-      if verb == "lights/ledsoff":
+      elif verb == "monitors/off":
+        print("[I] Got a 'monitors off' request. Adding DPMS nulls.")
+
+        # Turn off monitors for any X11 anything.
+        for auth in g`/tmp/xauth_*`:
+          print(f"[I] Turning off monitors on X instance with auth file {auth}.")
+          !(env DISPLAY=:0 XAUTHORITY=@(auth) xset dpms force off)
+
+        # Turn off monitors on each niri session,
+        sockets = g`/var/run/user/1000/niri*.sock`
+        for socket in sockets:
+          print(f"[I] Turning off monitors on niri instance {socket}.")
+          !(env NIRI_SOCKET=@(socket) niri msg action power-off-monitors)
+
+
+      elif verb == "monitors/on":
+        print("[I] Got a 'monitors on' request. Removing DPMS nulls.")
+
+        # Turn off monitors for any X11 anything.
+        for auth in g`/tmp/xauth_*`:
+          print(f"[I] Turning on monitors on X instance with auth file {auth}.")
+          !(env DISPLAY=:0 XAUTHORITY=@(auth) xset dpms force on)
+
+        # Turn off monitors on each niri session,
+        sockets = g`/var/run/user/1000/niri*.sock`
+        for socket in sockets:
+          print(f"[I] Turning on monitors on niri instance {socket}.")
+          !(env NIRI_SOCKET=@(socket) niri msg action power-on-monitors)
+
+      elif verb == "lights/ledsoff":
         print("[I] Turning off RGB leds.")
         !(${ledOffScript}/bin/ledsoff)
 
@@ -102,6 +131,14 @@ let
 
       print("----------------------------")
   '';
+  statusScript = pkgs.writeScriptBin "trailblazer-status-daemon" ''
+    #!${pkgs.xonsh}/bin/xonsh
+
+    print("[I] Trailblazer status service started. Updating every 10s.")
+    while True:
+      sleep 10
+      mosquitto_pub -h mitsuru -t trailblazer/monitors/status -m $(cat /sys/class/drm/card1-HDMI-A-1/dpms)
+  '';
 in
 {
   system.stateVersion = "23.11";
@@ -221,6 +258,16 @@ in
 
     script = "${commandScript}/bin/trailblazer-command-daemon";
   };
+  systemd.services.trailblazer-status = {
+    description = "trailblazer status service";
+
+    # Start once we're online.
+    wantedBy = [ "default.target" ];
+    wants = [ "network-online.target" ];
+    after = [ "network-online.target" ];
+
+    script = "${statusScript}/bin/trailblazer-status-daemon";
+  };
 
   #
   # Let trailblazer share its GPS with the house devices.