#!/bin/sh

set -e

[ "$DEBIAN_SCRIPT_DEBUG" ] && set -vx
[ "$DEBIAN_SCRIPT_DEBUG" ] && set -vx

# Load Debconf
. /usr/share/debconf/confmodule
db_version 2.0

# Include CARNET Tools
. /usr/share/carnet-tools/functions.sh

PKG="webalizer-cn"
WDIR="/var/www/webalizer"
WHTPASSWD="$WDIR/.htpasswd"
WCONF="/etc/webalizer/webalizer.conf"
WCONFBAK=`basename $WCONF`

oldreporttitle="usage statistics for"
reporttitle="Statistika pristupa za"
customized=0


if [ -e /usr/share/apache2/apache2-maintscript-helper ]; then
  . /usr/share/apache2/apache2-maintscript-helper

  webalizer_enable() {
    cp_echo "CN: Enabling $PKG configuration for Apache2."
    return 0
  }
else
  cp_echo "CN: Could not load Apache 2.4 maintainer script helper."

  webalizer_enable() {
    return 1
  }
fi

webalizer_error() {
  cp_echo "CN: Error while trying to enable $PKG configuration for Apache2."
}

mv_conffile()
{
  local oldconffile="$1"
  local newconffile="$2"

  rm -f $oldconffile.dpkg-remove
  [ -e "$oldconffile" ] || return 0

  cp_echo "CN: Preserving user changes to $newconffile (renamed from $oldconffile)."
  mv -f "$newconffile" "$newconffile.dpkg-new"
  mv -f "$oldconffile" "$newconffile"
}


mv_conffile /etc/apache2/conf.d/$PKG.conf /etc/apache2/conf-available/$PKG.conf

if [ -f "$WCONF" ]; then
  # Backup first.
  if cp_check_and_backup "$WCONF"; then
    cp_echo "CN: Old $WCONF saved as /var/backups/$WCONFBAK.bak."
  fi

  # Check for OutputDir
  temp=`awk 'tolower($1) == "outputdir" { print $2; }' $WCONF | tail -n 1`
  if [ "$temp" != "$WDIR" ]; then
    cp_echo "CN: Found custom OutputDir value: $temp"
    db_set webalizer/directory "$temp" || true
    customized=1
  fi

  # Check for ReportTitle
  temp=`awk 'tolower($1) == "reporttitle" { for(i=2; i<NF; i++) \
        printf("%s ", tolower($i)); print tolower($(NF)) }' $WCONF | tail -n 1`
  if [ "$temp" = "$oldreporttitle" ]; then
    temp_re="^[[:space:]]*ReportTitle[[:space:]]*${oldreporttitle}$"
    cp_check_and_sed "." \
                     "s/$temp_re/ReportTitle	${reporttitle}/I" \
                     "$WCONF" || true
    db_set webalizer/doc_title "$reporttitle" || true
  fi
else
  cp_echo "CN: Configuration file $WCONF is missing."
  customized=1
fi

db_stop || true


# Generate e-mail message with informations (username and password).
#
if [ $customized -eq 0 ]; then
  if [ ! -f "$WHTPASSWD" ]; then
    passwd="$(makepasswd --chars 8)"
    htpasswd -bcm $WHTPASSWD admin $passwd 2> /dev/null
    cp_echo ""
    cp_echo "CN: Webalizer URL is http://`hostname -f`/stats/"
    cp_echo "CN:            User: admin"
    cp_echo "CN:        Password: $passwd"
    cp_echo ""
    cp_echo "CN: Use \"htpasswd -m $WHTPASSWD admin\" to change it."
  else
    cp_echo "CN: File $WHTPASSWD already exists."
  fi
else
  cp_echo "CN: Skipping file $WHTPASSWD"
fi

#DEBHELPER#

if ! apache2ctl configtest >/dev/null 2>&1; then
  cp_echo "CN: Your Apache2 configuration seems to be broken."
  cp_echo "CN: Please, check the service after the installation finishes!"
fi

# Mail root.
#
cp_mail "$PKG"

exit 0