#!/bin/bash
#
# /usr/local/bin/rsync-websites.sh
#
# Mirror static website content to another server using rsync and SSH.
#
# Copyright 2012 - Jean-Sebastien Morisset - http://surniaulula.com/
# 
# This script is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation; either version 3 of the License, or (at your option) any later
# version.
#
# This script is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details
# at http://www.gnu.org/licenses/.

www_dir="/export/www"
rsync_opts="--recursive --times --omit-dir-times --links --delete"
static_srv="static.YOUR-DOMAIN-NAME.com"

function RsyncStatic () {
	[ -n "$visual" ] && echo -e "\nrsync $2...\n"
	#
	# Exclude all cache folders, except those that contain images, like
	# gallery/cache/ and blogroll-links-favicons/cache/.
	#
	# Exclude all PHP scripts, except for those under bwp-minify/min/,
	# which may provide minified files on the remote (PHP-enabled) server
	# by also using the CDN Linker plugin. Protect files under
	# bwp-minify/cache/ from being deleted on the remote server since they
	# are needed by the PHP scripts under bwp-minify/min/.
	#
	rsync --rsh="ssh -x" --perms --delete-excluded \
		--filter='P wp-content/plugins/bwp-minify/cache/**' \
		--filter='+ wp-content/plugins/bwp-minify/min/**' \
		--filter='+ wp-content/plugins/blogroll-links-favicons/cache/**' \
		--filter='+ wp-content/gallery/cache/**' \
		--filter='- **/cache/**' \
		--filter='- *-modified' \
		--filter='- *-new' \
		--filter='- *-orig' \
		--filter='- *.php' \
		--filter='- *.po' \
		--filter='- *.mo' \
		--filter='- *.pot' \
		--filter='- *.sql' \
		--filter='- *.swp' \
		--filter='- screenshot-*.jpg' \
		--filter='- screenshot-*.png' \
		$rsync_opts "$1" "$2"
}

# read command line opts
while :
do
	for arg in "$@"
	do
		case $arg in
			-h|--help)
				echo "purpose: rsync content to remote websites."
				echo " syntax: $0 [--help|--visual|--test]"
				exit 0
				;;
			-t|--test)
				rsync_opts="$rsync_opts --dry-run"
				shift 1
				;;
			-v|--visual)
				visual="1"
				rsync_opts="$rsync_opts --verbose"
				shift 1
				;;
			-*)
				echo "error: unrecognized command line argument."
				exit 1
				;;
                        *)	args[$(( i++ ))]="$1"
				shift 1
				;;
		esac
		continue 2
	done
	break
done

# reset $1, $2, etc. with left-over paramters
set -- "${args[@]}"

# sync static server
for sitedir in $www_dir/*
do
	for subdir in wordpress
	do
		if [ -d "$sitedir/$subdir/" ]
		then
			sitename="${sitedir##*/}"
			RsyncStatic "$sitedir/$subdir/" \
				"$static_srv:www/$sitename/$subdir/"
		fi
	done
done