rundwm

#! /bin/bash
/src/dwm/dwm &
pid=$!

# customize
# amount of time to show battery low warning
time_to_notify=100
percent_to_notify=30

do_bat_notif=1
time_var=0

# display percentage power and time at top of screen
# also says when battery is low in status bar
while kill -0 $pid 2> /dev/null; do
    state_str="$(upower -d | grep state: | head -n 1)"
    cur_power="$(upower -d | grep battery_BAT1 -A 30 | grep -i -m 1 'percentage' | sed 's/\([[:space:]]*.*:[[:space:]]*\)\([0-9]*\).*/\2/')"
    if [[ $state_str == *fully-charged* ]]; then
        power_str="I am charged!"
    elif [[ $state_str == *discharging*  ]]; then
        power_str="Uber: $cur_power%"
    else
        power_str="Charging Uber: $cur_power%"
    fi
    cur_time="$(date +%s)"
    # shows battery notif for (time_to_notify) seconds ONCE after cur_power is less than (percent_to_notify)
    if [[ $do_bat_notif = 1 && $cur_power -lt $percent_to_notify ]]; then
        if [ $time_var -eq 0 ]; then
            time_var="$(date +%s)"
        fi
        let "doing_bat_notif=1"
        xsetroot -name "+++ BATTERY LOW +++ | $(date)"
        # if warning has displayed for 10 seconds, disable warning
        let "diff=cur_time-time_var"
        if [[ diff -gt $time_to_notify ]]; then
            do_bat_notif=0
            time_var=0
        fi
    else
        #xsetroot -name "$(upower -d | grep battery_BAT1 -A 30 | grep -i -m 1 'percentage' | sed 's/.*:[[:blank:]]*/power: /') | $(date '+%a %b %d %r')"
        xsetroot -name "$power_str | $(date '+%a %b %d %r')"
    fi

    if [[ $cur_power -gt $percent_to_notify ]]; then
        do_bat_notif=1
    fi

    sleep 0.5s
done;