#!/bin/bash
#
# Z-Push: The Microsoft Exchange protocol server
# ----------------------------------------------
#
# Mostly for use on iOS which doesn't support IMAP IDLE.
#
# Although Ubuntu ships Z-Push (as d-push) it has a dependency on Apache
# so we won't install it that way.
#
# Thanks to http://frontender.ch/publikationen/push-mail-server-using-nginx-and-z-push.html.

source setup/functions.sh # load our functions
source /etc/mailinabox.conf # load global vars

# Prereqs.

echo "Installing Z-Push (Exchange/ActiveSync server)..."
apt_install \
	php-soap php5-imap libawl-php php5-xsl

php5enmod imap

# Copy Z-Push into place.
TARGETHASH=80cbe53de4ab8dd598d1f2af6f0a23fa396c529a
needs_update=0 #NODOC
if [ ! -f /usr/local/lib/z-push/version ]; then
	needs_update=1 #NODOC
elif [[ $TARGETHASH != `cat /usr/local/lib/z-push/version` ]]; then
	# checks if the version 
	needs_update=1 #NODOC
fi
if [ $needs_update == 1 ]; then
	git_clone https://github.com/fmbiete/Z-Push-contrib $TARGETHASH '' /usr/local/lib/z-push
	rm -f /usr/sbin/z-push-{admin,top}
	ln -s /usr/local/lib/z-push/z-push-admin.php /usr/sbin/z-push-admin
	ln -s /usr/local/lib/z-push/z-push-top.php /usr/sbin/z-push-top
	echo $TARGETHASH > /usr/local/lib/z-push/version
fi

# Configure default config.
sed -i "s^define('TIMEZONE', .*^define('TIMEZONE', '$(cat /etc/timezone)');^" /usr/local/lib/z-push/config.php
sed -i "s/define('BACKEND_PROVIDER', .*/define('BACKEND_PROVIDER', 'BackendCombined');/" /usr/local/lib/z-push/config.php
sed -i "s/define('USE_FULLEMAIL_FOR_LOGIN', .*/define('USE_FULLEMAIL_FOR_LOGIN', true);/" /usr/local/lib/z-push/config.php
sed -i "s/define('LOG_MEMORY_PROFILER', .*/define('LOG_MEMORY_PROFILER', false);/" /usr/local/lib/z-push/config.php

# Configure BACKEND
rm -f /usr/local/lib/z-push/backend/combined/config.php
cp conf/zpush/backend_combined.php /usr/local/lib/z-push/backend/combined/config.php

# Configure IMAP
rm -f /usr/local/lib/z-push/backend/imap/config.php
cp conf/zpush/backend_imap.php /usr/local/lib/z-push/backend/imap/config.php

# Configure CardDav
rm -f /usr/local/lib/z-push/backend/carddav/config.php
cp conf/zpush/backend_carddav.php /usr/local/lib/z-push/backend/carddav/config.php

# Configure CalDav
rm -f /usr/local/lib/z-push/backend/caldav/config.php
cp conf/zpush/backend_caldav.php /usr/local/lib/z-push/backend/caldav/config.php

# Configure Autodiscover
rm -f /usr/local/lib/z-push/autodiscover/config.php
cp conf/zpush/autodiscover_config.php /usr/local/lib/z-push/autodiscover/config.php
sed -i "s/PRIMARY_HOSTNAME/$PRIMARY_HOSTNAME/" /usr/local/lib/z-push/autodiscover/config.php

# Some directories it will use.

mkdir -p /var/log/z-push
mkdir -p /var/lib/z-push
chmod 750 /var/log/z-push
chmod 750 /var/lib/z-push
chown www-data:www-data /var/log/z-push
chown www-data:www-data /var/lib/z-push

# Restart service.

restart_service php5-fpm