#!/bin/bash

usage(){
	echo -n
	fmt <<EOF
DESCRIPTION
	Rebuild one of the caches stored in APCu for the standardebooks.org FPM pool.

USAGE
	rebuild-cache {bulk-downloads,feeds}
EOF
	exit 1
}

if [ $# -eq 1 ]; then
	if [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
		usage
	fi
fi

if [ $# -ne 1 ]; then
	usage
fi

# If this script is run by a user without sudo powers, they can be given permission to run this command by creating a file in `sudoers.d` with:
#
#     MY_USERNAME ALL=(www-data) NOPASSWD: /usr/bin/env SCRIPT_FILENAME=/tmp/rebuild-cache.php REQUEST_METHOD=GET cgi-fcgi -bind -connect *

type="$1"

if [ "${type}" = "bulk-downloads" ]; then
	echo "<?php require_once('Core.php'); Library::RebuildBulkDownloadsCache(); ?>" > /tmp/rebuild-cache.php
fi

if [ "${type}" = "feeds" ]; then
	echo "<?php require_once('Core.php'); Feed::RebuildFeedsCache(); ?>" > /tmp/rebuild-cache.php
fi

sudo --user=www-data env SCRIPT_FILENAME=/tmp/rebuild-cache.php REQUEST_METHOD=GET cgi-fcgi -bind -connect "/run/php/standardebooks.org.sock" &> /dev/null
rm /tmp/rebuild-cache.php