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#!/bin/bash

# Define Variables
WEB_ROOT=/var/www
WEB_ROOT_PREFIX=htdocs
WEB_ROOT_GROUP=www-data
WP_UPDATE_LOGS=/var/log/setup/wp-update.log

# Capture Errors
function OwnError() {
  echo "[ `date` ] $(tput setaf 1)$@$(tput sgr0)" | tee -ai $WP_UPDATE_LOGS
	exit $2
}


function WP_UPDATE() {

  # Check WP-CLI is installed or not
  wp --allow-root --info 2> /dev/null
  if [ $? -ne 0 ]; then
    echo "Downloading WP-CLI, Please wait..."
    wget -qO /usr/bin/wp https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli.phar \
    || OwnError "Unable to download WP-CLI, exit status = " $?

    # Executable permission
    chmod a+x /usr/bin/wp || OwnError "Unable to set executable permission for wp-cli, exit status = " $?
  fi

  # Check For WordPress
  for i in $(ls $WEB_ROOT);do
    if [ -d $WEB_ROOT/$i/$WEB_ROOT_PREFIX/wp-admin ]; then
      echo "Found wp-admin at $WEB_ROOT/$i/$WEB_ROOT_PREFIX/wp-admin"
      cd $WEB_ROOT/$i/$WEB_ROOT_PREFIX/
      WEB_ROOT_OWNER=$(stat -c '%U' $WEB_ROOT/$i/$WEB_ROOT_PREFIX/wp-admin)

      echo "PWD = $PWD" | tee -ai $WP_UPDATE_LOGS
      echo "WEB_ROOT = $WEB_ROOT" | tee -ai $WP_UPDATE_LOGS
      echo "WEB_ROOT_PREFIX = $WEB_ROOT_PREFIX" | tee -ai $WP_UPDATE_LOGS
      echo "WEB_ROOT_OWNER = $WEB_ROOT_OWNER" | tee -ai $WP_UPDATE_LOGS
      echo "WEB_ROOT_GROUP = $WEB_ROOT_GROUP" | tee -ai $WP_UPDATE_LOGS


      # Update WordPress
      wp --allow-root core update

      # Update WordPress Plugins
      wp --allow-root plugin update --all

      # Update WordPress Themes
      wp --allow-root theme update --all

      # Change Permission
      chown -R $WEB_ROOT_OWNER:$WEB_ROOT_GROUP $WEB_ROOT/$i/$WEB_ROOT_PREFIX
      chmod -R 775 $WEB_ROOT/$i/$WEB_ROOT_PREFIX/wp-content/uploads/
    fi
  done
}




tail -n1 /var/log/rsnapshot.log | grep  "completed successfully"

if [ $? -eq 0 ]; then
  WP_UPDATE | tee -ai $WP_UPDATE_LOGS
else
  grep $(date +"%Y-%m-%d") /var/log/rsnapshot.log | mail -s "Local backup on $(hostname) failed WP_UPDATE failed" thomasgbennett@gmail.com
fi