Kieran's opinionated (and probably slightly dumb) nix config
dunkirk.sh
1#!/usr/bin/env bash
2
3# Function to calculate temperature based on battery percentage
4calculate_temperature() {
5 local bat_percent=$1
6 local temp
7
8 if [ "$bat_percent" -le 1 ]; then
9 temp=1000
10 elif [ "$bat_percent" -le 10 ]; then
11 # Linear interpolation between 1% (1000K) and 10% (4000K)
12 local range=$((4000 - 1000))
13 local factor=$(( (bat_percent - 1) * 100 / 9 ))
14 temp=$(( 1000 + (range * factor) / 100 ))
15 else
16 temp=6500 # Default temperature
17 fi
18
19 echo $temp
20}
21
22# Initialize variables
23PREV_STATUS=""
24
25# Main loop
26while true; do
27 # Get battery percentage
28 battery_info=$(cat /sys/class/power_supply/BAT1/capacity)
29 percent=$(echo $battery_info | tr -d '\n')
30
31 # Check if the battery is charging
32 is_plugged=$(cat /sys/class/power_supply/BAT1/status)
33
34 # Create a status string to track changes
35 CURRENT_STATUS="${percent}_${is_plugged}"
36
37 # Only update if status has changed or first run
38 if [ "$CURRENT_STATUS" != "$PREV_STATUS" ] || [ -z "$PREV_STATUS" ]; then
39 if [ "$percent" -le 10 ] && [ "$is_plugged" != "Charging" ]; then
40 temp=$(calculate_temperature $percent)
41 hyprctl hyprsunset temperature $temp
42 else
43 # Reset to default temperature
44 hyprctl hyprsunset identity
45 fi
46
47 PREV_STATUS="$CURRENT_STATUS"
48 fi
49
50 sleep 5
51done