#!/bin/bash
set -e

## Environment
DLSITE=http://ja.wordpress.org/
WPDIR=wordpress
DLDIR=${HOME}/src/${WPDIR}
DLFILE=latest-ja.tar.gz
VFILE=${WPDIR}/wp-includes/version.php
VERSION=${DLDIR}/version
YYYYMMDD=$(date +%Y/%m/%d)
MAILTO=root

## Initialize
[ ! -d ${DLDIR} ] && mkdir -p ${DLDIR}
cd ${DLDIR}

## Now Version record
ls -l | egrep ^d | awk '{print $NF}' | \
egrep '(^[0-9].)' | tail -1 > ${VERSION}

## Wordpress GET and Expand

wget ${DLSITE}/${DLFILE} && \
tar xzf ${DLFILE} ${VFILE} > /dev/null 2>&1
VDIR=$(egrep '(^\$wp_version)' ${VFILE} | awk '{print $NF}' | sed -e "s/'//g;s/;//g")

[ ! -d ${VDIR} ] && mkdir -p ${VDIR} && mv ${DLFILE} ${VDIR}
[ -d ${WPDIR} ] && rm -fr ${WPDIR}
[ -f ${DLFILE} ] && rm -f ${DLFILE}
[ -L current ] && rm -f current
ln -s $(ls -l | egrep ^d | awk '{print $NF}' | tail -1) current

ls -l | egrep ^d | tail -1 | awk '{print $NF}' | \
diff -y - ${VERSION} > /dev/null 2>&1 || \
ls -l | egrep ^d | tail -1 | awk '{print $NF}' | \
awk '{print "WordPress",$1,"Released"}' | \
mail -s "${YYYYMMDD} Wordpress Downloaded" ${MAILTO}