#!/bin/sh

usage="\

rcnotify.sh <<update|up>|<show|sh>|<remove|rm> <msg name>|add <msg name> <msg content>|<edit|ed> <msg name>>

"

dot_dir=.rcnotify

scripts_dir=$HOME/$dot_dir/scripts

mbox_dir=$HOME/$dot_dir/mbox

check() {

	[ -d $scripts_dir ] && mkdir -p $scripts_dir

	[ -d $mbox_dir ] && mkdir -p $mbox_dir

}

update_msg() {

	# we will working at temp dir and remove it at exiting in case the msg scripts

	# leave rubbish...

	TMP=/tmp

	work_dir=$(mktemp -d $TMP/rcnotify.XXXXXX) || exit 1

	cd $work_dir &>/dev/null

	# execute the msg scripts

	for i in $scripts_dir/*.sh; do

		msg=$(sh $i)

		if [ -n "$msg" ]; then

			#FIXME: a up coming msg will over write the old one...

			echo "$msg" > $mbox_dir/$(basename $i .sh)

		fi

		# cleanup the work folder or the following script may have trouble

		rm -rf *

	done

	# do cleanups

	cd - &>/dev/null

	rm -rf $work_dir

}

add_msg() {

	name=$1

	shift

	echo "$@" > $mbox_dir/$name

}

show_msg() {

	cd $mbox_dir &>/dev/null

	for i in *[^~]; do

		sed -e "s%^%$i: %" $i 2>/dev/null

	done

}

remove_msg() {

	while [ "$1" != "" ]; do

		rm $mbox_dir/$1 &>/dev/null

		shift

	done

}

edit_msg() {

	if [ -n "$EDITOR" ]; then

		editor=$EDITOR

	elif [ -n "$VISUAL" ]; then

		editor=$VISUAL

	elif [ -x /usr/bin/vim ]; then

		editor=/usr/bin/vim

	elif [ -x /usr/bin/emacs ]; then

		editor=/usr/bin/emacs

	else

		echo "Please specify your editor in VISUAL or EDITOR env."

		exit 1

	fi

	[ $# -eq 0 ] && echo "rcnotify.sh ed <msg_file_names...>"

	while [ $# -gt 0 ]; do

		eval $editor $mbox_dir/$1

		shift

	done

}

help() {

	echo $usage

}

main() {

	check

	[ $# -eq 0 ] && { show_msg; exit 0;}

	while [ "$1" != "" ]; do

		case $1 in

			"update" | "up")

			update_msg

			;;

			"show" | "sh")

			show_msg

			;;

			"remove" | "rm")

			shift

			remove_msg $@

			;;

			"add")

			shift

			add_msg $@

			;;

			"edit" | "ed")

			shift

			edit_msg $@

			;;

			*)

			help

			;;

		esac

		shift

	done

}

main $@