#!/bin/sh

# Script handling monitor connecting/disconnecting with BSPWM
# This is generally meant to be ran after xrandr call, or as a postswitch hook
# in autorandr tool.  

DISPLAYS="1 2 3 4 5 6 7 8 9 0"
DISPLAYS_AMT="$(echo "$DISPLAYS" | tr " " "\n" | wc -l)"
MONITORS="$(bspc query -M --names)"
MONITOR_AMT="$(echo "$MONITORS" | wc -l)"
DISPLAYS_PER_MONITOR="$((DISPLAYS_AMT / MONITOR_AMT))"

# TODO: Run xrandr query too, to check which displays are actually connected
# if this isn't in sync with monitors tracked by BSPWM, move all displays from
# the disconnected monitor into the still connected monitors, and leave a temporary
# display on the disconnected monitor, since BSPWM require at least 1 display per mon

# Split displays evenly across all monitors
i=1
for monitor in $(echo "$MONITORS" | tr "\n" " ") ; do
  start="$((1 + DISPLAYS_PER_MONITOR * (i - 1)))"
  end="$((start + DISPLAYS_PER_MONITOR - 1))"
  monitor_displays="$(echo "$DISPLAYS" | cut -d' ' -f$start-$end)"
  bspc monitor $monitor -d $monitor_displays
  ((i++))
done

# In case some displays were left out due to integer division error
((end++))
for display in $(echo "$DISPLAYS" | cut -d' ' -f$end-); do
  bspc monitor "$monitor" -a "$display"
done

# (Re)start trayer
killall trayer
until ! pgrep trayer; do sleep 0.1; done
trayer --monitor primary --edge top --align right --widthtype request --padding 0 --transparent true --tint 0x282c34 --alpha 0 --height 28 --SetDockType true & disown
xdo above -t "$(xdo id -N Bspwm -n root | sort | head -n 1)" "$(xdo id -N trayer)" # Keep trayer above bspwm root window, but below everything else

# Start lemonbar
launchlemon