#!/bin/bash
# postinst script for spreed-webrtc-server
#
# see: dh_installdeb(1)

set -e

CONF_FILE=/etc/spreed-webrtc/server.conf
DEFAULT_CONF_FILE=/usr/share/doc/spreed-webrtc-server/server.conf.in.gz
ROOT_DIR=/usr/share/spreed-webrtc-server/www
LOG_FILE=/var/log/spreed-webrtc-server.log

# Source debconf library.
if [ -e /usr/share/debconf/confmodule ]; then
        . /usr/share/debconf/confmodule
fi

case "$1" in
    configure)
        # user spreed-webrtc
        getent passwd spreed-webrtc >/dev/null
        if [ $? -ne 0 ]
        then
            adduser --quiet \
                --system \
                --quiet \
                --disabled-login \
                --disabled-password \
                --home /usr/share/spreed-webrtc-server \
                --no-create-home \
                -gecos "Spread WebRTC" \
                spreed-webrtc
        fi
        if [ ! -e /var/log/spreed-webrtc-server.log ]
        then
            touch /var/log/spreed-webrtc-server.log
            chown spreed-webrtc:adm /var/log/spreed-webrtc-server.log
        fi
  
        if [ ! -e $CONF_FILE ]
        then 
            # Install example configuration file
            gzip -k --stdout -d $DEFAULT_CONF_FILE > $CONF_FILE

            # Configure root directory
            sed -i "s|^[; ]*root = .*$|root = $ROOT_DIR|" $CONF_FILE

            # Configure log file
            sed -i "s|^[; ]*logfile = .*$|logfile = $LOG_FILE|" $CONF_FILE

            # Configure HTTP Listener
            db_input medium spreed-webrtc-server/http_ip_port
            db_go
            db_get spreed-webrtc-server/http_ip_port
            if [ -n "$RET" ]
            then
                sed -i "s/^[; ]*listen = 127.0.0.1:8080$/listen = $RET/" $CONF_FILE
            fi

            # Configure STUN servers
            db_input medium spreed-webrtc-server/stun_servers
            db_go
            db_get spreed-webrtc-server/stun_servers
            if [ -n "$RET" ]
            then
                sed -i "s/^\([; ]*stunURIs = .*\)$/\1\nstunURIs = $RET\n/" $CONF_FILE
            fi

            # Generate random secrets
            for secret in sessionSecret encryptionSecret serverToken
            do
               KEY=$( tr -dc A-Za-z0-9_ < /dev/urandom | head -c32 )
               sed -i "s/^\([; ]*$secret = .*\)$/\1\n$secret = $KEY\n/" $CONF_FILE
            done
        fi
   ;;
esac

#DEBHELPER#