From 4c609135e9e4182ef530529b8974ed8ed5d79974 Mon Sep 17 00:00:00 2001
From: nevaforget <dom@moonarch.de>
Date: Thu, 9 Apr 2026 12:08:35 +0200
Subject: [PATCH] feat: add wlsunset nightlight toggle with Waybar module

Add blue light filter support via wlsunset, toggleable through a Waybar
module in the brightness group. Nightlight icon is the primary element,
backlight slider expands on click.

- Add wlsunset package to official.txt
- Add moonarch-nightlight toggle script (kill/restart wlsunset)
- Add moonarch-waybar-nightlight status script (JSON output)
- Add custom/nightlight module to group/brightness in Waybar config
- Add Catppuccin Yellow highlight for active nightlight state
- Add wlsunset autostart in Niri config (5000K night temperature)
---
 CLAUDE.md                               |  9 +++++++++
 defaults/bin/moonarch-nightlight        | 12 ++++++++++++
 defaults/bin/moonarch-waybar-nightlight |  9 +++++++++
 defaults/xdg/niri/config.kdl            |  1 +
 defaults/xdg/waybar/config              |  9 +++++++++
 defaults/xdg/waybar/style.css           |  4 ++++
 packages/official.txt                   |  1 +
 7 files changed, 45 insertions(+)
 create mode 100755 defaults/bin/moonarch-nightlight
 create mode 100755 defaults/bin/moonarch-waybar-nightlight

diff --git a/CLAUDE.md b/CLAUDE.md
index 621f972..8785a3c 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -18,6 +18,15 @@ Laptops mit `charge_control_end_threshold`-Support (ThinkPad, Framework, etc.) e
 - udev-Regel gibt Gruppe `wheel` Schreibzugriff auf den Threshold (kein sudo nötig)
 - Auf Desktops ohne Battery-Support versteckt sich das Feature komplett
 
+## Nightlight (Blaufilter)
+
+Waybar-Toggle für wlsunset (Wayland-nativer Blaufilter):
+- `wlsunset` startet per Niri-Autostart mit fester Nacht-Temperatur (5000K)
+- Klick auf das Nightlight-Modul in `group/brightness` toggled wlsunset an/aus (kill/restart)
+- Aktiver Zustand zeigt 󰌵 in Catppuccin Yellow, inaktiv 󰌶 in Standard-Textfarbe
+- Signal SIGRTMIN+11 für sofortiges Waybar-Refresh
+- Scripts: `moonarch-nightlight` (Toggle), `moonarch-waybar-nightlight` (Status-JSON)
+
 ## Konventionen
 
 - Paketlisten sind einfache Textdateien, ein Paket pro Zeile, Kommentare mit `#`
diff --git a/defaults/bin/moonarch-nightlight b/defaults/bin/moonarch-nightlight
new file mode 100755
index 0000000..3704cac
--- /dev/null
+++ b/defaults/bin/moonarch-nightlight
@@ -0,0 +1,12 @@
+#!/bin/bash
+# ABOUTME: Toggles wlsunset night light on/off.
+# ABOUTME: Kills or restarts wlsunset process, signals waybar for refresh.
+
+if pgrep -x wlsunset > /dev/null; then
+    pkill -x wlsunset
+else
+    wlsunset -T 6500 -t 5000 -S 00:00 -s 00:01 &
+    disown
+fi
+
+pkill -RTMIN+11 waybar
diff --git a/defaults/bin/moonarch-waybar-nightlight b/defaults/bin/moonarch-waybar-nightlight
new file mode 100755
index 0000000..5b4d4bd
--- /dev/null
+++ b/defaults/bin/moonarch-waybar-nightlight
@@ -0,0 +1,9 @@
+#!/bin/bash
+# ABOUTME: Outputs JSON status for waybar nightlight module.
+# ABOUTME: Shows warm icon when wlsunset is active, cool icon when off.
+
+if pgrep -x wlsunset > /dev/null; then
+    jq -nc '{text: "󰌵", alt: "on", tooltip: "Nightlight: An (5000K)", class: "on"}'
+else
+    jq -nc '{text: "󰌶", alt: "off", tooltip: "Nightlight: Aus", class: "off"}'
+fi
diff --git a/defaults/xdg/niri/config.kdl b/defaults/xdg/niri/config.kdl
index 978fb92..b7753c0 100644
--- a/defaults/xdg/niri/config.kdl
+++ b/defaults/xdg/niri/config.kdl
@@ -86,6 +86,7 @@ spawn-at-startup "nm-applet" "--indicator"
 spawn-sh-at-startup "waypaper --restore"
 // spawn-sh-at-startup "nemo . &> /dev/null &"
 spawn-sh-at-startup "foot --server"
+spawn-at-startup "wlsunset" "-T" "6500" "-t" "5000" "-S" "00:00" "-s" "00:01"
 // Clipboard history managed by cliphist.service (systemd user service)
 
 hotkey-overlay {
diff --git a/defaults/xdg/waybar/config b/defaults/xdg/waybar/config
index 5931100..f4ae831 100644
--- a/defaults/xdg/waybar/config
+++ b/defaults/xdg/waybar/config
@@ -61,6 +61,7 @@
     "group/brightness": {
         "orientation": "inherit",
         "modules": [
+            "custom/nightlight",
             "backlight",
             "backlight/slider"
         ],
@@ -304,6 +305,14 @@
             "<span color='#dd532e' size='8pt' rise='1.5pt'>█</span>"
         ]
     },
+    "custom/nightlight": {
+        "exec": "moonarch-waybar-nightlight",
+        "return-type": "json",
+        "interval": "once",
+        "signal": 11,
+        "on-click": "moonarch-nightlight",
+        "format": "{}"
+    },
     "custom/cpugov": {
         "exec": "moonarch-waybar-cpugov",
         "return-type": "json",
diff --git a/defaults/xdg/waybar/style.css b/defaults/xdg/waybar/style.css
index 91059f3..2a32537 100644
--- a/defaults/xdg/waybar/style.css
+++ b/defaults/xdg/waybar/style.css
@@ -257,6 +257,10 @@ widget widget>* {
     color: alpha(@theme_selected_bg_color, 0.9);
 }
 
+#custom-nightlight.on {
+    color: #f9e2af;
+}
+
 menu {
     border-radius: 4px;
 }
diff --git a/packages/official.txt b/packages/official.txt
index 58e017a..62925a5 100644
--- a/packages/official.txt
+++ b/packages/official.txt
@@ -63,6 +63,7 @@ waybar
 swaync
 cliphist
 wl-clipboard
+wlsunset
 libnotify
 upower
 awww