#!/bin/sh

PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

PKG="cauth-ldap-slave-haproxy-config"
HAPROXY_CONFIG_ROOT="/etc/haproxy"
YANDEX_ENVIRONMENT=$(cat /etc/yandex/environment.type)


check_yandex_environment() {
    if [ -z "${YANDEX_ENVIRONMENT}" ]
    then
        echo "ERROR: No yandex environment set, check contents of /etc/yandex/environment.type"
        exit 1
    fi
    if [ "${YANDEX_ENVIRONMENT}" = "production" ]
    then
        echo "INFO: Installing onto \"production\" Yandex environment"
    elif [ "${YANDEX_ENVIRONMENT}" = "testing" ]
    then
        echo "INFO: Installing onto \"testing\" Yandex environment"
    else
        echo "ERROR: Unknown Yandex environment, check /etc/yandex/environment.type contents."
        exit 1
    fi
} # check_yandex_environment()


configure_environment() {
    rm -v "${HAPROXY_CONFIG_ROOT}"/haproxy.cfg || true
    dpkg-divert --package "$PKG" --remove --rename --divert /etc/logrotate.d/haproxy.orig.disabled /etc/logrotate.d/haproxy
}  # configure_environment()


do_configure() {
    if [ "${YANDEX_ENVIRONMENT}" = "production" ]
    then
        configure_environment
    fi
    if [ "${YANDEX_ENVIRONMENT}" = "testing" ]
    then
        echo "ERROR: Testing environment is not supported yet."
        # configure_environment
        exit 1
    fi
} # do_configure()


case "$1" in
    remove|upgrade|deconfigure)
    check_yandex_environment
    do_configure
    ;;

    failed-upgrade)
    ;;

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

exit 0
