72 lines
2.4 KiB
Bash
72 lines
2.4 KiB
Bash
#!/bin/bash
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# Waybar power-profiles-daemon module.
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# default : print the current profile as JSON (empty -> Waybar hides the module)
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# toggle : cycle to the next available profile, then signal Waybar to refresh
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#
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# Wired as interval:"once" + signal in config.jsonc, so the script runs exactly
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# once at Waybar startup and thereafter only when we signal it on click. On a
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# desktop the single startup run hits an unavailable PPD, prints empty, and the
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# module stays hidden forever with no recurring cost.
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#
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# Availability keys off the systemd unit being *enabled* rather than
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# `powerprofilesctl get` succeeding: PPD is D-Bus-activatable and desktop CPUs
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# expose EPP too, so `get` would answer on a desktop as well. The repo only
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# enables the service on laptops (IS_DESKTOP=0), so `is-enabled` is the honest
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# "is this a laptop that uses PPD" signal.
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SERVICE=power-profiles-daemon.service
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available() {
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command -v powerprofilesctl >/dev/null 2>&1 || return 1
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systemctl is-enabled "$SERVICE" >/dev/null 2>&1
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}
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# Available profile names in the order PPD lists them (power-saver … performance).
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# Profile header lines are just "name:" (optionally "* name:" for the active one);
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# every other line (Driver:, Degraded:, …) has text after the colon.
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profiles() {
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powerprofilesctl list 2>/dev/null | sed -nE 's/^[[:space:]]*\*?[[:space:]]*([a-z-]+):[[:space:]]*$/\1/p'
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}
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# FontAwesome glyphs (Nerd Font): f0e7 bolt, f6ad yin-yang, f06c leaf, f011 power.
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icon() {
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case "$1" in
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performance) printf '' ;;
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balanced) printf '' ;;
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power-saver) printf '' ;;
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*) printf '' ;; # power symbol, fallback
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esac
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}
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cycle() {
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mapfile -t list < <(profiles)
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[ "${#list[@]}" -eq 0 ] && exit 0
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cur=$(powerprofilesctl get 2>/dev/null)
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next=0
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for i in "${!list[@]}"; do
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if [ "${list[$i]}" = "$cur" ]; then
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next=$(( (i + 1) % ${#list[@]} ))
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break
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fi
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done
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powerprofilesctl set "${list[$next]}"
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pkill -SIGRTMIN+9 waybar
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}
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output() {
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if ! available; then
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printf '{"text":""}\n'
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exit 0
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fi
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cur=$(powerprofilesctl get 2>/dev/null)
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[ -z "$cur" ] && { printf '{"text":""}\n'; exit 0; }
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printf '{"text":"%s","tooltip":"Power profile: %s\\nClick to cycle","class":"%s"}\n' \
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"$(icon "$cur")" "$cur" "$cur"
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}
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case "$1" in
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toggle|cycle) cycle ;;
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*) output ;;
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esac
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