#!/bin/sh
# Managed by ansible (pi_kiosk role).
#
# Openbox is here for one concrete reason: a browser asks to be full-screen over EWMH,
# and only a window manager answers that request. With no WM running, --kiosk was
# silently ignored and Firefox fell back to its default 1280x972 window on a 1920x1080
# screen - the page in the top-left corner with black bands down the right edge and
# along the bottom. Openbox costs a couple of MB and does nothing else here.

xset s off
xset -dpms
xset s noblank

{% if pi_kiosk_mode == 'debug' %}
# Debug session. Firefox is an ordinary window with its chrome (so devtools and the URL
# bar are reachable) and is *not* relaunched when it exits - quitting it should leave a
# usable desktop, not fight you for the screen. Openbox is the session leader instead:
# when it exits (root menu -> Exit) the X session ends and .bash_profile starts a fresh
# one. Right-click the desktop for a terminal.
firefox "{{ pi_kiosk_url }}" &

exec openbox
{% else %}
openbox &

unclutter -idle 0.5 -root &

# The loop is what takes the place of a WM's "keep something on screen" job: Openbox
# manages the window, but nothing else would bring Firefox back if it died.
while true; do
  firefox --kiosk "{{ pi_kiosk_url }}"
  sleep 2
done
{% endif %}