#!/bin/sh

: <<=cut

=head1 NAME

pacman_pending_updates - Plugin to monitor pending updates

=head1 APPLICABLE SYSTEMS

All systems with pacman as their package manager.

=head1 CONFIGURATION

The plugin needs no additional configuration and works out of the box.

=head1 INTERPRETATION

This plugin will draw one line: the number of updates pending.

=head1 MAGIC MARKERS

  #%# family=auto
  #%# capabilities=autoconf

=head1 VERSION

  1.1.1

=head1 AUTHOR

Bert Peters <bert@bertptrs.nl>

=head1 LICENSE

GPLv2

=cut

case $1 in
	config)
		cat <<'EOM'
graph_args --base 1000 -l 0
graph_title Pending updates
graph_vlabel updates
graph_category security
updates.label updates
updates.info Current number of pending updates
EOM
		;;

	autoconf)
		if hash checkupdates >/dev/null 2>&1; then
			echo yes
		else
			echo "no (checkupdates not found)"
		fi
		;;

	*)
		updates="$(checkupdates)"
		exitcode=$?
		if [ "$exitcode" = 0 ]; then
			if [ -n "$updates" ]; then
				echo "updates.value $(echo "$updates" | wc -l)"
				echo "updates.extinfo $(echo "$updates" | paste -s -d,)"
			else
				echo "updates.value 0"
			fi
		elif [ "$exitcode" = 2 ]; then
			# Surprisingly "checkupdates" returns the exitcode 2, if all packages are
			# up to date.
			echo "updates.value 0"
		else
			echo "updates.value U"
		fi
		;;
esac

exit 0