#!/usr/bin/env bash

prev_mtime=$(cat styles.mtime)
curr_mtime=$(stat -c %Y css/styles.css)

##has styles.css been modified?
if [[ $prev_mtime != "$curr_mtime" ]]; then
	##update .mtimes
	sed -i "1s/.*/$curr_mtime/" styles.mtime
	echo "file has been modified!"
	##insert the commit id
	COMMIT="$(git rev-parse HEAD)"
	sed -i "s/css?=\w*/css?v=${COMMIT}/g" index.html
fi