#! /bin/sh
# vim: set ft=sh sw=4 et:
# postrm script for #PACKAGE#
#
# see: dh_installdeb(1)

set -e

# summary of how this script can be called:
#        * <postrm> `remove'
#        * <postrm> `purge'
#        * <old-postrm> `upgrade' <new-version>
#        * <new-postrm> `failed-upgrade' <old-version>
#        * <new-postrm> `abort-install'
#        * <new-postrm> `abort-install' <old-version>
#        * <new-postrm> `abort-upgrade' <old-version>
#        * <disappearer's-postrm> `disappear' <r>overwrit>r> <new-version>
# for details, see http://www.debian.org/doc/debian-policy/ or
# the debian-policy package

case "$1" in
    purge)
       # note: when executing in this mode, this script cannot assume
       # the existence of _any_ of the package dependencies.  it must
       # work using only Essential packages.  hence, in several cases
       # below we do cleanups only if the relevant program exists.

       # remove config files from ucf database and filesystem
       for conf in write-permissions read-permissions hooks.lua; do

          # mimic dpkg and remove backups too
          for ext in '' '~' '%' .bak .ucf-new .ucf-old .ucf-dist; do
             rm -f /etc/monotone/$conf$ext || true
          done 

          # clear entries in ucf database
          # note: we cannot assume ucf is still installed at this point
          # (if it isn't, we don't need to worry about its database)
          if which ucf > /dev/null; then
             ucf --purge /etc/monotone/$conf
          fi
          if which ucfr > /dev/null; then
             ucfr --purge monotone-server /etc/monotone/$conf
          fi
       done

       # if debconf still exists and we were asked to auto-manage the
       # database, delete the auto-generated key and database. don't
       # delete anything else in /var/lib/monotone - there might be
       # hand-created databases and keys that the admin wants to keep.
       # in any case remove /var/lib/monotone(/keys) if empty.

       if [ -e /usr/share/debconf/confmodule ]; then
	   . /usr/share/debconf/confmodule

	   db_get monotone-server/manage-db
	   if [ "$RET" = true ]; then
	       db_get monotone-server/key
	       rm -f /var/lib/monotone/keys/"$RET"

	       rm -f /var/lib/monotone/default.mtn
	       rm -f /var/lib/monotone/default.mtn~
	       rm -f /var/lib/monotone/default.mtn-journal

	       grep -v "$RET" /etc/monotone/passphrases \
	                    > /etc/monotone/passphrases.dpkg-new || true
	       if [ -s /etc/monotone/passphrases.dpkg-new ]; then
		   mv -f /etc/monotone/passphrases.dpkg-new \
		         /etc/monotone/passphrases
	       else
		   rm -f /etc/monotone/passphrases.dpkg-new \
		         /etc/monotone/passphrases
	       fi

	   fi
	   # do not stop debconf, the debhelper additions will need it.
       fi
       rmdir --ignore-fail-on-non-empty /var/lib/monotone/keys
       rmdir --ignore-fail-on-non-empty /var/lib/monotone

       # if deluser/delgroup exist, remove the server user and group.
       # do not do this if /var/lib/monotone still exists (so that it
       # will still have a named user owning it).
       if which deluser > /dev/null && [ ! -e /var/lib/monotone ]; then
	   if [ -n "`id -u monotone 2>/dev/null`" ]; then
               deluser --quiet monotone 2>/dev/null >/dev/null
	   fi

	   if [ -n "`id -g monotone 2>/dev/null`" ]; then
               delgroup --quiet monotone 2>/dev/null >/dev/null
	   fi
       else
	   if [ -e /var/lib/monotone ]; then
	       reason="/var/lib/monotone still exists"
	   else
	       reason="deluser is not available"
	   fi
	   echo "warning: not deleting monotone user or group because $reason" >&2
       fi
    ;;
    remove|upgrade|failed-upgrade|abort-install|abort-upgrade|disappear)
    ;;

    *)
        echo "postrm called with unknown argument \`$1'" >&2
        exit 1

esac

# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.

#DEBHELPER#

exit 0