#!/bin/sh
# vim: tw=100:

# This file is part of Background Music.
#
# Background Music is free software: you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation, either version 2 of the
# License, or (at your option) any later version.
#
# Background Music is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Background Music. If not, see <http://www.gnu.org/licenses/>.

#
# postinstall
#
# Copyright © 2017, 2018 Kyle Neideck
#

PATH=/bin:/sbin:/usr/bin:/usr/sbin; export PATH

coreaudiod_plist="/System/Library/LaunchDaemons/com.apple.audio.coreaudiod.plist"
dest_volume="$3"
xpc_helper_path="$(bash safe_install_dir.sh -y)"

logger "Installing BGMXPCHelper to $xpc_helper_path"
cp -Rf "BGMXPCHelper.xpc" "$xpc_helper_path"

# TODO: Fail the install and show an error message if this fails.
bash "post_install.sh" "$xpc_helper_path" "BGMXPCHelper.xpc/Contents/MacOS/BGMXPCHelper" "."

# TODO: Verify the installed files, their permissions, the _BGMXPCHelper user/group, etc.
# TODO: Instead of just sleeping for 5 seconds, wait until coreaudiod is restarted and BGMDevice is
#       ready to use.

# The extra or-clauses are fallback versions of the command that restarts coreaudiod. Apparently
# some of these commands don't work with older versions of launchctl, so I figure there's no
# harm in trying a bunch of different ways (which should all work).
(launchctl kill SIGTERM system/com.apple.audio.coreaudiod &>/dev/null || \
    launchctl kill TERM system/com.apple.audio.coreaudiod &>/dev/null || \
    launchctl kill 15 system/com.apple.audio.coreaudiod &>/dev/null || \
    launchctl kill -15 system/com.apple.audio.coreaudiod &>/dev/null || \
    (launchctl unload "$coreaudiod_plist" &>/dev/null && \
        launchctl load "$coreaudiod_plist" &>/dev/null) || \
    killall coreaudiod &>/dev/null) && \
    sleep 5

# Try opening BGMApp using its bundle ID first so the installer can declare it as "relocatable".
# That way, if the user moves BGMApp and then installs a newer version of Background Music, the
# installer will try to find the old version of BGMApp and put the new one in the same place.
#
# If we can't open BGMApp, it very likely didn't install properly, so we fail the install.
open -b com.bearisdriving.BGM.App || \
    open "${dest_volume}/Applications/Background Music.app" || \
    exit 1

# The installer plays a sound when it finishes, so give BGMApp a second to launch.
sleep 1

exit 0