#!/bin/bash

# Make sure we're running through sudo
export me=`whoami`
if [ "$me" != 'root' ]; then
	echo "I don't like $me very much. Please run me via sudo.";
	exit -1;
fi

#Make sure we've passed in a version
if [ "$1" == '' ]; then
	echo "If you don't tell me what to do, then I can't do it. Please provide a WPMU version number.";
	exit -2;
else
	echo "We'll be working with WPMU $1 today...";
fi

# And make sure that the necessary WP download exists
if [ -a ./wordpress-mu-$1.zip ]; then
	echo "... and I see that you were smart enough to download it.";
else
	echo "... and it is nowhere to be seen! I cannot work under these conditions!";
	exit -3;
fi

# Save some paths for reference
export wpmu_base='/path/to/WPMU'
export const="$wpmu_base/const"
export latest="$wpmu_base/wordpress-mu-$1"

# Expand latest WPMU version, version passed as command argument (eg $1)
unzip ./wordpress-mu-$1.zip -d $wpmu_base/
# Remove WPMU archive
rm ./wordpress-mu-$1.zip

# Link wp-config file
ln -fhs $const/wp-config.php $latest/wp-config.php
# Link .htaccess file
ln -fhs $const/.htaccess $latest/.htaccess
# Link mu-plugins directory
rm -R $latest/wp-content/mu-plugins
ln -fhs $const/wp-content/mu-plugins $latest/wp-content/mu-plugins
# Link plugins directory
rm -R $latest/wp-content/plugins
ln -fhs $const/wp-content/plugins $latest/wp-content/plugins
# Link blogs.dir directory
ln -fhs $const/wp-content/blogs.dir $latest/wp-content/blogs.dir
# Link sunrise file
ln -fhs $const/wp-content/sunrise.php $latest/wp-content/sunrise.php
# Link each theme in themes folder
for theme in `ls -d $const/wp-content/themes/*`; do
	echo "*** Copying theme from $theme"
	ln -fhs $theme $latest/wp-content/themes/
done

# Link WPMU version to current folder
ln -fhs $latest/ $wpmu_base/current