#! /bin/bash

## lock the screen using i3lock (and maybe suspend)

## usage: screenlock [SUSPEND]

# WORKAROUND make the date show up in the right place on 2+ monitor setups
# I want it to only show up on the primary screen, so use xrandr to get the
# dimensions and position of the primary monitor and calculate the date position
# from that
geometry=$(xrandr | sed -n 's/^.*primary \([0-9]*\)x[0-9]*+\([0-9]\)*+[0-9]* .*/\1 \2/p')
width=$(echo "$geometry" | cut -f1 -d" ")
xpos=$(echo "$geometry" | cut -f2 -d" ")
xoffset=$(("$xpos" + "$width" / 2))
datepos="$xoffset:600"

# lock and fork so we can suspend with the screen locked
i3lock --color=000000 \
       --pass-media-keys \
       --nofork \
       --ignore-empty-password \
       --screen=0 \
       --indicator \
       --inside-color=00000055 \
       --insidever-color=00000055 \
       --insidewrong-color=00000055 \
       --ring-color=555555ff \
       --ringwrong-color=ff3333ff \
       --ringver-color=99ceffff \
       --keyhl-color=99ceffff \
       --bshl-color=9523ffff \
       --line-color=00000000 \
       --separator-color=00000000 \
       --clock \
       --verif-color=99ceffff \
       --wrong-color=ff8282ff \
       --time-color=ffffffff \
       --time-size=72 \
       --time-str="%H:%M" \
       --date-color=ffffffff \
       --date-size=42 \
       --date-str="%b %d, %Y" \
       --date-align 0 \
       --date-pos="$datepos" \
       --wrong-size=72 \
       --verif-size=72 \
       --radius=300 \
       --ring-width=25 &

# suspend if we want, and if this machine is currently using a battery
batpath=/sys/class/power_supply/BAT0/status

if [ -f "$batpath" ] && \
       [ "$(cat $batpath)" == "Discharging" ] && \
       [ "$1" == "true" ]; then
    systemctl suspend
fi

# block until the screen is unlocked (since xss-lock expects the locker to exit
# only when unlocked)
wait