#!/bin/bash
#
# wordpress-tools
# https://git.stack-source.com/msb/wordpress-tools
# Copyright (c) 2022 Matthew Saunders Brown <matthewsaundersbrown@gmail.com>\
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)

# must be root, will su to vhost users for wp cron runs
if [ "$USER" != "root" ]; then
  exec sudo $0
fi

# create virtualhostArray listing all virtualhost on the server
cd /srv/www
virtualhostArray=(`ls -1|grep -v ^html$`)

# create empty virtualhostExclusionArray array (any domains added to this array will be skipped)
declare -a virtualhostExclusionArray

# check for local config, which can be used to override either of the above arrays
if [[ -f /usr/local/etc/wp-cron.conf ]]; then
  source /usr/local/etc/wp-cron.conf
  # conf file could contain either one or both arrays, configured like this:
  #virtualhostArray=("example.com" "example.net")
  #virtualhostExclusionArray=("example.org")
fi

for VHOST in "${virtualhostArray[@]}"
do
  # check if VHOST has been added to exclustion array
  if [[ ! " ${virtualhostExclusionArray[@]} " =~ " ${VHOST} " ]]; then
    # basic check for WP install
    if [ -f /srv/www/$VHOST/html/wp-config.php ]; then
      VHOST_USER=$(stat -c '%U' /srv/www/$VHOST)
      # confirm that WP really is installed
      if $(timeout 5 su -c "wp core is-installed --path=/srv/www/$VHOST/html/" $VHOST_USER); then
        # run cron for VHOST as VHOST_USER
        /usr/bin/logger --tag wp-cron "running wp-cli cron for $VHOST as $VHOST_USER"
        su -c "/usr/local/bin/wp cron event run --due-now --quiet --path=/srv/www/$VHOST/html/" $VHOST_USER
      else
        echo "NOTICE: 'wp core is-installed' failed for $VHOST (user $VHOST_USER)" | mail -s "wp-cron" webmaster -aFrom:webmaster
      fi
    fi
  fi
done