#!/bin/bash

pkg_host='root@whooper.v.seblu.net'
pkg_base='/root/packages'
pkg_regex=''
arch_regexp="($(uname -m)|any)"

usage() {
	echo "usage: ${0##*/} <list|get|install> [pkg_regex] [arch_regexp] [pkg_base] [pkg_host]" >&2
	echo 'default:'
	echo "   pkg_host: $pkg_host"
	echo "   pkg_regex: $pkg_regex"
	echo "   pkg_base: $pkg_base"
	echo "   arch_regex: $arch_regexp"
	exit 1
}

(( $# >= 1 )) || usage

case $1 in
	list|get|install) action="$1";;
	*) usage;;
esac

[[ -n "$2" ]] && pkg_regex=$2
[[ -n "$3" ]] && arch_regexp=$3
[[ -n "$4" ]] && pkg_base=$4
[[ -n "$5" ]] && pkg_host=$5

list_tmp=$(mktemp)
ssh "$pkg_host" \
"find '$pkg_base' -type f \
-regextype posix-egrep -regex '.*/$pkg_regex.*-$arch_regexp.pkg\.tar\.xz'" \
</dev/null >"$list_tmp" 2>/dev/null
exec 3<>"$list_tmp"

while read -u 3 -r line; do
	[[ $line ]] || continue
	case $action in
	list)
		echo "$line"
		;;
	get)
		[[ -f $(basename $line) ]] &&
			echo "==> $(basename $line): already exists. skipped!" && continue
		scp "$pkg_host:$line" .
		;;
	install)
		(( EUID == 0 )) && pacman='pacman' || pacman='sudo pacman'
		pkg_tmp=$(mktemp)
		scp "$pkg_host:$line" "$pkg_tmp" && $pacman -U "$pkg_tmp"
		rm -f "$pkg_tmp"
		;;
	esac
done

rm -f "$list_tmp"

# vim:set ts=2 sw=2 ft=sh noet: