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#!/bin/bash

set -e

. /usr/share/debconf/confmodule

case "${1}" in
	configure)
		db_version 2.0

		db_get taler-auditor/username
		_USERNAME="${RET:-taler-auditor-httpd}"

		db_get taler-auditor/groupname
		_GROUPNAME="${RET:-taler-auditor-httpd}"

		db_stop

		CONFIG_FILE="/etc/default/taler-auditor"
		TALER_HOME="/var/lib/taler-auditor"

		# Creating taler groups as needed
		if ! getent group ${_GROUPNAME} > /dev/null
		then
			echo -n "Creating new Taler group ${_GROUPNAME}:"
			addgroup --quiet --system ${_GROUPNAME}
			echo " done."
		fi
		# Creating taler users if needed
		if ! getent passwd ${_USERNAME} > /dev/null
		then
			echo -n "Creating new Taler user ${_USERNAME}:"
			adduser --quiet --system --ingroup ${_GROUPNAME} --home ${TALER_HOME}/httpd ${_USERNAME}
			echo " done."
		fi
        # Writing new values to configuration file
        echo -n "Writing new configuration file:"
        CONFIG_NEW=$(tempfile)

cat > "${CONFIG_NEW}" <<EOF
# This file controls the behaviour of the Taler init script.
# It will be parsed as a shell script.
# please do not edit by hand, use 'dpkg-reconfigure taler-auditor'.

TALER_USER=${_USERNAME}
TALER_GROUP=${_GROUPNAME}
EOF

cat > "/etc/systemd/system/taler-auditor-httpd.service" <<EOF
[Unit]
Description=GNU Taler payment system auditor REST API
After=postgres.service network.target

[Service]
EnvironmentFile=/etc/default/taler-auditor
User=${_USERNAME}
Type=simple
Restart=on-failure
ExecStart=/usr/bin/taler-auditor-httpd -c /etc/taler-auditor.conf

[Install]
WantedBy=multi-user.target
EOF

		cp -f "${CONFIG_NEW}" "${CONFIG_FILE}"
		rm -f "${CONFIG_NEW}"
		echo " done."

        echo -n "Setting up system services "

        mkdir -p /var/lib/taler-auditor/tmp
        chown root:${_GROUPNAME} /var/lib/taler-auditor/tmp
        chmod 770 /var/lib/taler-auditor/tmp
        chmod +s /var/lib/taler-auditor/tmp

        systemctl daemon-reload

        echo "done."

		# Cleaning
		echo "All done."
		;;

	abort-upgrade|abort-remove|abort-deconfigure)
		;;

	*)
		echo "postinst called with unknown argument \`${1}'" >&2
		exit 1
		;;
esac

#DEBHELPER#

exit 0