#!/usr/bin/env bash

# Usage:
#   $ ./track.sh [-x] <filepath> <username> <password> <host> <bag> [title]
#
# title is optionally derived from filepath

set -e
#set -x

# TODO: use optparse
if [ "$1" = "-x" ]; then
	norepeat=true
	shift
fi
filepath=${1:?}
username=${2:?}
password=${3:?}
host=${4:?}
bag=${5:?}
title=${6:-}

interval=5

# derive tiddler title from filename
if [ -z "$title" ]; then
	title=`basename $filepath | sed -e "s/^\(.*\)\..*$/\1/"`
fi

cmd="stat --format=%y $filepath" # Linux
#cmd="stat -f '%m' $filepath" # BSD

options="-u $username:$password"

#trap "echo \"deleting $title\"; sleep 2; exit" 2 # XXX: disabled

options="$options -X PUT"
if [ -z "$norepeat" ]; then
	lastmod=`$cmd`
else
	lastmod=none
fi
while true; do
	if [ -z "$norepeat" ]; then
		timestamp=`$cmd`
	fi
	if [ "$lastmod" != "$timestamp" ]; then
		{
			echo "type: text/javascript";
			echo "tags: dev systemConfig";
			echo;
			cat $filepath;
		} | \
			curl $options -H "Content-Type: text/plain" --data-binary @- \
				"$host/bags/$bag/tiddlers/$title"
		if [ -z "$norepeat" ]; then
			lastmod=$timestamp
			echo "updating $title ($lastmod)"
			notify-send TiddlyWeb "updating $title ($lastmod)" # XXX: Ubuntu-specific
			sleep $interval
		else
			exit 0
		fi
	fi
done