#!/bin/sh

# Admin notes:
# 
# Each note is just a file.  Stored under /var/spool/admin/notes/[open|ack]/<package>/<note>
# 
# note: list notes
# note ack <note> - moves note to "acknowledged" spool
# note list [package] show notes for a given package, or all notes
# note delete <note> - delete a note from the system
# note edit <package> [file] - edit or create a note

# TODO
# discard unchanged new note file
# quiet options to suppress new note name echo
# semi-quiet to just output the number
# renumber? to renumber all notes/reset sequence
# lock the temp files
# clean up unlocked temp files

: ${ZPMSPOOL:=/var/lib/admin/notes}

OPEN=$ZPMSPOOL/open

set -e

umask 007

#cd $SPOOL || { echo "can't chdir to $SPOOL" ; exit 1; }

[ -z "$1" ] && set list

quiet=

cmd=$1
shift

findnote() {
	file=$(find $ZPMSPOOL -type f -name "$1")
	if [ -z "$file" ] ; then
		[ -z "$quiet" ] || printf "no such note $1\n" 1>&2
		exit 1
	fi
	echo $file
}

findopen() {
	file=$(find $ZPMSPOOL/open -type f -name "$1")
	if [ -z "$file" ] ; then
		[ -z "$quiet" ] || printf "no such open note $1\n" 1>&2
		exit 1
	fi
	echo $file
}

case $cmd in
	category)
		notefile=$(findnote $1)
		printf "%s\n" $(basename $(dirname $notefile))
		;;
	list)
		case $1 in
			-a) find $ZPMSPOOL/ack -type f -printf '%P\n' | sort -n
			       	;;
			?*) if [ -d $ZPMSPOOL/open/$1 ] ; then
				find $ZPMSPOOL/open/$1 -type f -printf '%P\n' | sort -n
			else
				exit 1
			fi
				;;
			*) find $ZPMSPOOL/open -type f -printf '%P\n' | sort -n
				;;
		esac
		;;
	detail)
		len=$(find $ZPMSPOOL/open -type f -printf "%P\n" | awk ' { if ( length > x ) { x = length } }END{ print x }')
		find $ZPMSPOOL/open -type f -printf "%P\n" | sort -n | while read note ; do
			subject=$(head -1 $ZPMSPOOL/open/$note)	
			date=$(stat -c '%y' $ZPMSPOOL/open/$note | cut -f1 -d' ')
			owner=$(stat -c '%U' $ZPMSPOOL/open/$note)
			printf '%*s %8s %s %s\n' $len $note $owner "$date" "$subject"
		done
		;;
	ack)
		file=$(findopen $1)
		subfile=$(echo $file | sed -e "s|$ZPMSPOOL/open/||")
		filedir=$(dirname $subfile)
		mkdir -p $ZPMSPOOL/ack/$filedir
		mv $file $ZPMSPOOL/ack/$filedir
		;;
	new)
		# new -- edit a new file for package general (or ZPMNOTEPACKAGE)
		# new package -- edit a new note for package
		# new package file -- use file for new package note
		if [ $# -eq 0 ]; then set ${ZPMNOTEPACKAGE:-general}; fi

		# edit a new file for the note
		if [ $# -eq 1 ]; then
			tmp=$(mktemp -p $ZPMSPOOL/open)
			pkg=$1
			[ -f $ZPMSPOOL/.template ] && cp $ZPMSPOOL/.template $tmp
			#flock -n -E3 $tmp vim $tmp
			#if [ $? -eq 3 ]; then echo already editing $1; exit 1; fi
			${EDITOR:-vi} $tmp
		else
			# take note from file or stdin
			pkg=$1 ; shift
			mkdir -p $ZPMSPOOL/open/$pkg
			case $1 in
				'-')
					tmp=$(mktemp -p $ZPMSPOOL/open)
					cat - > $tmp
					;;
				*)
					tmp=$(mktemp -p $ZPMSPOOL/open)
					cp $1 $tmp
					;;
			esac
		fi
		file=$(zpm sequence notes)
		mkdir -p $ZPMSPOOL/open/$pkg
		mv $tmp $ZPMSPOOL/open/$pkg/$file || { rm -f $tmp; exit 1; }
		# TODO run newhooks in $ZPMSPOOL/.hook/newnote
		echo "$pkg/$file"
		exit 0
		;;
	edit)
		file=$(findnote $1)
		flock -n -E3 $file vim $file
		if [ $? -eq 3 ]; then echo already editing $1; exit 1; fi
		;;
	resolve)
		file=$(findnote $1)
		echo $file
		;;
	remove)
		file=$(findnote $1)
		rm $file
		;;
	show)
		file=$(findnote $1)
		${PAGER:-less} $file
		;;
	*)
		echo '$0: unknown command ' $cmd 1>&2
		exit 1
esac