#!/bin/sh

REPO=/users/home/andrewlkho/git/design/andrewho.co.uk.git
PUBLIC=/users/home/andrewlkho/web/public

GEM_HOME=/users/home/andrewlkho/local/gems
GEM_PATH=/users/home/andrewlkho/local/gems:/usr/local/lib/ruby/gems/1.8
RUBYLIB="/users/home/andrewlkho/local/lib:${RUBYLIB}"
PATH="/users/home/andrewlkho/local/bin:/users/home/andrewlkho/local/gems/bin:${PATH}"

# It took a while to discover this non-intuitive requirement
export GEM_HOME GEM_PATH RUBYLIB

while read OLDREV NEWREV REFNAME; do
    if [ ${REFNAME} = "refs/heads/master" ]; then
        MASTER_UPDATED=1
    fi
done

if [ ${MASTER_UPDATED} ]; then
    # Setup a temporary staging directory
    COMMITID=`cat ${REPO}/refs/heads/master`
    TMP=/users/home/andrewlkho/tmp
    STAGING="${TMP}/${COMMITID}"
    mkdir -p ${STAGING}

    # Grab a copy of master's HEAD
    git archive --format=tar refs/heads/master | gtar -C ${STAGING} -x -f -

    # Generate the site with jekyll
    cd ${STAGING}
    jekyll > /dev/null

    # Copy it over to the public directory
    rsync -aqz --delete ${STAGING}/_site/ ${PUBLIC}

    # Clean up
    cd
    rm -rf ${STAGING}
fi