#!/bin/sh
# Luma Home trampoline — bind-mount a transparent web page over LG Home,
# then launch Luma on top. A subscription watcher re-launches Luma every
# time the Home button is pressed (backup for when WebOSServiceBridge in
# the web page does not fire).
#
# Install:
#   ln -sf /media/developer/luma-home/boot-hook.sh /var/lib/webosbrew/init.d/10-luma-home
#
# Requires: Homebrew Channel, Luma (com.ecklf.luma) installed via IPK.
# Tested on: webOS 6.5.3-47 (LG 65NANO813PA)

export PATH=/usr/bin:/usr/sbin:/bin:/sbin:$PATH
L=/media/developer/luma-home
H=/usr/palm/applications/com.webos.app.home

kill $(cat /tmp/luma-watcher.pid 2>/dev/null) 2>/dev/null

if ! grep -q " $H " /proc/mounts; then
  mount --bind $L/overlay $H
  systemctl restart sam
  i=0
  while [ $i -lt 30 ]; do
    systemctl is-active sam >/dev/null 2>&1 && break
    sleep 2; i=$((i+1))
  done
  sleep 5
  luna-send -n 1 -w 10000 -f luna://com.webos.applicationManager/launch '{ "id": "com.ecklf.luma" }' </dev/null >/dev/null 2>&1
fi

nohup $L/watcher.sh </dev/null >/dev/null 2>&1 &