#!/usr/bin/env sh
# Clean fullscreen aims to provide a means to have a clean desktop when using
# transparency in bspwm, the issue I found was that when a window entered,
# fullscreen mode I was still able to see the windows behind it, I think this
# looks kind of gross so that's why this exists.

HideBar() {
  if pgrep "polybar"; then
    polybar-msg cmd hide
  fi
}

ShowBar() {
  if pgrep "polybar"; then
    polybar-msg cmd show
  fi
}

HideNodes() {
  NODES=$(bspc query -N -n .tiled -d "$1")

  for node in $NODES; do
    bspc node "$node" -g hidden=on
  done
}

ShowNodes() {
  NODES=$(bspc query -N -n .hidden -d "$1")

  for node in $NODES; do
    bspc node "$node" -g hidden=off
  done
}

bspc subscribe node_state | while read -r Event
do
  Desktop=$(echo "$Event" | awk '{print $3}')
  State=$(echo "$Event" | awk '{print $5}')
  Active=$(echo "$Event" | awk '{print $6}')
  # Hide bar and nodes when node becomes fullscreen, otherwise show
  if [ "$State" = "fullscreen" ]; then
    if [ "$Active" = "on" ]; then
      HideNodes "$Desktop"
      HideBar
    else
      ShowNodes "$Desktop"
      ShowBar
    fi
  fi
done &

bspc subscribe node_remove | while read -r Event
do
  Desktop=$(echo "$Event" | awk '{print $3}')

  # Show bar if no nodes are fullscreen on current desktop
  if [ -z "$(bspc query -N -n .fullscreen -d "$Desktop")" ]; then
    ShowBar
  fi
  ShowNodes "$Desktop"
done &

bspc subscribe node_transfer | while read -r Event
do
  SrcNode=$(echo "$Event" | awk '{print $4}')
  # Show nodes on src desktop and hide nodes on dest desktop
  # If src node is in full screen mode
  if [ -n "$(bspc query -N -n "$SrcNode".fullscreen)" ]; then
    SrcDesktop=$(echo "$Event" | awk '{print $3}')
    ShowNodes "$SrcDesktop"
    DestDesktop=$(echo "$Event" | awk '{print $6}')
    HideNodes "$DestDesktop"
    ShowBar
  fi
done &

bspc subscribe desktop_focus | while read -r Event
do
  Desktop=$(echo "$Event" | awk '{print $3}')

  # Hide bar if desktop contains fullscreen node, otherwise show it
  if [ -n "$(bspc query -N -n .fullscreen -d "$Desktop")" ]; then
    HideBar
  else
    ShowBar
  fi
done &