#!/bin/sh
# SPDX-License-Identifier: Apache-2.0
# postinst for libnginx-mod-http-ipng-stats
set -e

AVAIL=/etc/nginx/modules-available/50-mod-http-ipng-stats.conf
ENABLED=/etc/nginx/modules-enabled/50-mod-http-ipng-stats.conf

case "$1" in
    configure)
        # Enable the module by symlinking it into modules-enabled.
        if [ ! -L "$ENABLED" ] && [ -f "$AVAIL" ]; then
            ln -s "$AVAIL" "$ENABLED"
        fi

        # Sanity-check the resulting config. If nginx -t fails, back
        # out the symlink so the operator isn't left with an nginx
        # that cannot start.
        if ! nginx -t > /dev/null 2>&1; then
            echo "warning: nginx -t failed after enabling" \
                 "libnginx-mod-http-ipng-stats; disabling the module." >&2
            rm -f "$ENABLED"
            nginx -t >&2 || true
            echo "warning: nginx-ipng-stats-plugin has been installed" \
                 "but is NOT enabled; fix the configuration error" \
                 "and re-enable with:" >&2
            echo "  sudo ln -s $AVAIL $ENABLED && sudo nginx -s reload" >&2
        fi
        ;;

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

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

#DEBHELPER#

exit 0