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#!/bin/sh
# modified from pystardust, GPLv3 license: https://github.com/pystardust/sbar
# INIT
sec=0
# MODULES
update_time () {
time="$(date '+%a %m/%d %H:%M') $(TZ=Asia/Shanghai date '+/%d %H:') $(date -u '+/%d %H:')"
}
#update_cap () {
# cap="$(if xset q | grep -q "Caps Lock: *on"; then echo A; else echo a; fi)"
#}
update_net () {
net="$(if nmcli -t --fields type,state device | grep -q '^\(ethernet\|wifi\):connected$'; then echo 1; else echo 0; fi)"
case "$(nmcli -t --fields device,state device)" in
*wg_ia:connected*) vpn=I;;
*wg_ka:connected*) vpn=K;;
*wg_studio:connected*) vpn=S;;
*) vpn=0;;
esac
}
update_vol () {
# $(NF-1) for both alsa and pulseaudio
vol="$(amixer get Master | awk -F'[][]' 'END{printf("%d %s",($(NF-1)=="on")?1:0,$2)}')"
}
update_mic () {
# $(NF-1) for both alsa and pulseaudio
mic="$(amixer get Capture | awk -F '[][]' 'END{print ($(NF-1)=="on")?1:0}')"
}
update_bat () {
bat="$(cat /sys/class/power_supply/BAT0/capacity)%"
}
update_gpu () {
gpu="$(envycontrol -q | awk 'END{print toupper(substr($NF,0,1))}')"
}
display () {
xsetroot -name "$time | N $net V $vpn | M $vol C $mic | $gpu | $bat"
}
# modules that don't update on their own need to be run at the start for getting their initial value
update_net
update_vol
update_mic
update_gpu
# SIGNALLING
# trap "<function>;display" "RTMIN+n"
trap "update_mic;display" "RTMIN"
trap "update_vol;display" "RTMIN+1"
# xev can't read my toggle internet keyboard key, don't know what key to use in sxhkd to send signal
trap "update_net;display" "RTMIN+2"
# to update it from external commands
## kill -m $(pidof -x sbar)
# where m = 34 + n
while :; do
sleep 1 &
wait
[ $((sec % 5 )) -eq 0 ] && update_time # update time every 5 seconds
[ $((sec % 60)) -eq 0 ] && update_net
[ $((sec % 60)) -eq 0 ] && update_bat
# zoom turn on my mic on start, so need to monitor the change
[ $((sec % 60 )) -eq 0 ] && update_mic
# how often the display updates ( 5 seconds )
[ $((sec % 5 )) -eq 0 ] && display
sec=$((sec + 1))
done
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