#!/bin/sh

set -eu

if [ $# != 1 ] ; then
    echo usage: $0 '<suffix>'
    exit 1
fi

# the SUFFIX must not contain spaces or shell meta characters
SUFFIX=$1

if [ -e /etc/apache2-$SUFFIX ] ; then
    echo ERROR: /etc/apache2-$SUFFIX already exists
    exit 2
fi

echo Setting up /etc/apache2-$SUFFIX ...
mkdir /etc/apache2-$SUFFIX
ln -s /etc/apache2/*-available /etc/apache2-$SUFFIX
cp -dp /etc/apache2/*-enabled /etc/apache2-$SUFFIX
ln -s /etc/apache2/magic /etc/apache-$SUFFIX
cp -dp /etc/apache2/{apache2.conf,envvars,ports.conf} /etc/apache2-$SUFFIX

echo Setting up /etc/init.d/apache2-$SUFFIX ...
ln -s /etc/init.d/apache2 /etc/init.d/apache2-$SUFFIX
ln -s /lib/systemd/system/apache2.service.d /lib/systemd/system/apache2-$SUFFIX.service.d
/lib/systemd/system-generators/systemd-sysv-generator

echo -n Setting up symlinks:
for $a in a2enmod a2dismod a2ensite a2dissite a2enconf a2disconf apache2ctl ; do
        echo -n " $a-$SUFFIX"
        ln -s /usr/sbin/$a /usr/local/sbin/$a-$SUFFIX
done

echo Setting up /etc/logrotate.d/apache2-$SUFFIX and /var/log/apache2-$SUFFIX ...
cp -a /etc/logrotate.d/apache2 /etc/logrotate.d/apache2-$SUFFIX
perl -p -i -e s,apache2,apache2-$SUFFIX,g /etc/logrotate.d/apache2-$SUFFIX
mkdir /var/log/apache2-$SUFFIX
chmod 750 /var/log/apache2-$SUFFIX
chown root:adm /var/log/apache2-$SUFFIX