#!/usr/bin/env bash

. libremessages

usage() {
	print "Usage: %s [-h] PKGNAME [PKGVER]" "${0##*/}" "${0##*/}"
	print 'Detect iv a given package (version) is already in the repos'
	echo
	prose "If a version is specified, it assumedx that you want a greater or
	       equal version."
	echo
	prose "Example usage:"
	print "  $ %s 'pcre' '20'" "${0##*/}"
	echo
	print "Exit status:"
	print "  0: The package is built"
	print "  1: The package has not built"
	print " >1: There was an error"
}

while getopts 'h' arg; do
	case $arg in
		h) usage; exit 0 ;;
		*) usage >&2; exit 2 ;;
	esac
done
if [[ $# -ne 1 ]] && [[ $# -ne 2 ]]; then
	usage >&2
	exit 2
fi

pkg=${1}
ver=${2:-0}
pver=$(LC_ALL=C pacman -Sddp --print-format '%v' "${pkg}" 2>/dev/null)

# if pacman fails or returns nothing
r=$?

result=$(vercmp "${pver}" "${ver}")
# result:
# -1 : pver < ver
#  0 : pver = ver
#  1 : pver > ver

if [[ $result -ge 0 ]] && [[ $r -eq 0 ]]; then
	exit 0
else
	exit 1
fi