#!/bin/sh

set -e

# Load debconf
. /usr/share/debconf/confmodule

if [ "$1" != reconfigure ]; then

    apache2_done=1

    db_fget apache2-cn/wwwhost seen
    if [ "$RET" != "true" ]; then
        apache2_done=0
    fi

    test $apache2_done -eq 1 && exit 0
fi


CONFDIR="/etc/apache2"
CONF="$CONFDIR/apache2.conf"
HOST=$(hostname)
DOMAIN=$(hostname -d)


# Check for existing SSL VirtualHosts.
#
has_listen_ssl=0
if [ -d "$CONFDIR/conf-enabled" ] && [ -n "$(ls -A $CONFDIR/conf-enabled/)" ]; then
    listen_ssl_mask=$CONFDIR/conf-enabled/*.conf
fi
if [ -d "$CONFDIR/sites-enabled" ] && [ -n "$(ls -A $CONFDIR/sites-enabled/)" ]; then
    listen_ssl_mask=$listen_ssl_mask" "$CONFDIR/sites-enabled/*.conf
fi

for file in $CONF $listen_ssl_mask; do
    if [ -f "$file" ]; then
        if egrep -iq '^[[:space:]]*<VirtualHost .*443[[:space:]]*>' $file; then
            has_listen_ssl=1
            break
        fi
    fi
done


# SSL certificates.
#
if [ $has_listen_ssl -eq 1 ]; then

    # SSL configuration already exists - no need for SSL certificates.
    db_set apache2-cn/sslcf "" || true
    db_set apache2-cn/sslckf "" || true
    db_set apache2-cn/sslccf "" || true

else

    # SSL certificates information..
    SSLCF=1
    while [ $SSLCF -eq 1 ]; do

        # SSL certificate file input.
        db_input critical apache2-cn/sslcf || true
        db_go || true

        db_get apache2-cn/sslcf || true

        if [ -n "$RET" ]; then

            if [ -f "$RET" ]; then

                # SSL certificate file exists.
                SSLCF=0

                SSLCKF=1
                while [ $SSLCKF -eq 1 ]; do

                    # SSL certificate key file input.
                    db_input critical apache2-cn/sslckf || true
                    db_go || true

                    db_get apache2-cn/sslckf || true

                    if [ -n "$RET" ]; then

                        if [ -f "$RET" ]; then

                            # SSL certificate key file exists.
                            SSLCKF=0

                            SSLCCF=1
                            while [ $SSLCCF -eq 1 ]; do

                                # SSL certificate chain file input.
                                db_input critical apache2-cn/sslccf || true
                                db_go || true

                                db_get apache2-cn/sslccf || true

                                if [ -n "$RET" ]; then

                                    if [ -f "$RET" ]; then

                                        # SSL certificate chain file exists.
                                        SSLCCF=0
                                    fi
                                else
                                    SSLCCF=0
                                fi
                            done
                        fi
                    fi
                done
            fi
        else

            # No SSL certificates specified.
            db_set apache2-cn/sslcf "" || true
            db_set apache2-cn/sslckf "" || true
            db_set apache2-cn/sslccf "" || true

            SSLCF=0
        fi
    done
fi


# Use WWW VirtualHost?
# - only during fresh install
#
if [ -z "$2" ]; then
    db_subst apache2-cn/wwwhost stroj_domena "${HOST}.${DOMAIN}"
    db_subst apache2-cn/wwwhost www_domena "www.${DOMAIN}"
    db_input critical apache2-cn/wwwhost || true
    db_go || true
fi

exit 0