#!/bin/bash

# define default value for serverhostname and serverport if not passed into container
KCCONF_SERVERHOSTNAME=${KCCONF_SERVERHOSTNAME:-127.0.0.1}
KCCONF_SERVERPORT=${KCCONF_SERVERPORT:-236}
ADDITIONAL_KOPANO_PACKAGES=${ADDITIONAL_KOPANO_PACKAGES:-""}

set -eu # unset variables are errors & non-zero return values exit the whole script

[ -n "${ADDITIONAL_KOPANO_PACKAGES// }" ] && apt update
[ -n "${ADDITIONAL_KOPANO_PACKAGES// }" ] && for installpkg in $ADDITIONAL_KOPANO_PACKAGES; do
	# shellcheck disable=SC2016 disable=SC2086
	if [ "$(dpkg-query -W -f='${Status}' $installpkg 2>/dev/null | grep -c 'ok installed')" -eq 0 ]; then
		apt --assume-yes install "$installpkg"
	fi
done

echo "Ensure directories"
mkdir -p /run/sessions

if [ "$KCCONF_SERVERHOSTNAME" == "127.0.0.1" ]; then
	echo "Z-Push is using the default: connection"
else
	echo "Z-Push is using an ip connection"
	sed -e "s#define([\"']MAPI_SERVER[\"'],\s*[\"']default:[\"'])#define('MAPI_SERVER', 'https://${KCCONF_SERVERHOSTNAME}:${KCCONF_SERVERPORT}/kopano')#" \
	    -i /etc/z-push/kopano.conf.php
fi

echo "Configuring Z-Push for use behind a reverse proxy"
sed -e "s#define([\"']USE_CUSTOM_REMOTE_IP_HEADER[\"'],\s*false)#define('USE_CUSTOM_REMOTE_IP_HEADER', 'HTTP_X_FORWARDED_FOR')#" \
    -i /etc/z-push/z-push.conf.php

echo "Ensure config ownership"
chown -R www-data:www-data /run/sessions

echo "Activate z-push log rerouting"
touch /var/log/z-push/z-push.log
touch /var/log/z-push/z-push-error.log
chown www-data:www-data /var/log/z-push/z-push.log /var/log/z-push/z-push-error.log
tail --pid=$$ -F --lines=0 -q /var/log/z-push/z-push.log &
tail --pid=$$ -F --lines=0 -q /var/log/z-push/z-push-error.log &

echo "Starting Apache"
rm -f /run/apache2/apache2.pid
set +u
# shellcheck disable=SC1091
source /etc/apache2/envvars
# cleaning up env variables
unset "${!KCCONF_@}"
exec /usr/sbin/apache2 -DFOREGROUND