#!/bin/sh
# postinst script for tpconfig
#
# see: dh_installdeb(1)

set -e

# summary of how this script can be called:
#        * <postinst> `configure' <most-recently-configured-version>
#        * <old-postinst> `abort-upgrade' <new version>
#        * <conflictor's-postinst> `abort-remove' `in-favour' <package>
#          <new-version>
#        * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
#          <failed-install-package> <version> `removing'
#          <conflicting-package> <version>
# for details, see /usr/share/doc/packaging-manual/
#
# quoting from the policy:
#     Any necessary prompting should almost always be confined to the
#     post-installation script, and should be protected with a conditional
#     so that unnecessary prompting doesn't happen if a package's
#     installation fails and the `postinst' is called with `abort-upgrade',
#     `abort-remove' or `abort-deconfigure'.

CONFFILE=/etc/default/tpconfig
TEMPLATE=/usr/share/tpconfig/tpconfig.conf

case "$1" in
configure)
    . /usr/share/debconf/confmodule || exit 0

    db_get tpconfig/overwrite-config-file || true
    if [ "${RET}" = "true" ]; then

	start_file ()
	{
	    # Write the config file.
	    SEDFILE="${1}.sed.$$"
	    TMPFILE="${1}.tmp.$$"
	    clean_temp_files
	}

	clean_temp_files ()
	{
	    rm -f "${SEDFILE}" "${TMPFILE}"
	}

	end_file ()
	{
	    cat "${2}" | sed -f "${SEDFILE}" > "${TMPFILE}"
	    rm -f "${SEDFILE}"
	    mv -f "${TMPFILE}" "${1}"
	}

	transfer_string ()
	{
	    db_get "${2}" || true
	    write_binding "${1}" "${RET}"
	}

	transfer_boolean ()
	{
	    db_get "${2}" || true
	    if [ "${RET}" = "true" ]; then
		RET="yes"
	    else
		RET="no"
	    fi
	    write_binding "${1}" "${RET}"
	}

	write_binding ()
	{
	    echo "s%${1}=.*\$%${1}=\"${2}\"%;" >> "${SEDFILE}"
	}

	trap "clean_temp_files" EXIT INT QUIT TERM

	start_file "${CONFFILE}"
	transfer_boolean RESET_P tpconfig/reset_p
	transfer_string OPTIONS tpconfig/options
	end_file "${CONFFILE}" "${TEMPLATE}"

    fi
    db_stop
    ;;
abort-upgrade|abort-remove|abort-deconfigure)
    ;;
*)
    echo "postinst 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
