#!/bin/sh

# install a file from a package
# -f pkgfile
# -R root of pkg
# -P prefix to file
# -S strip prefix
# -p pkgname

pkgroot=/

while getopts :f:v:r:d:a:u:g:l:p:b:P:R: opt; do
        case $opt in
                R) pkgroot="$OPTARG" ;;
                f) pkgfile="$OPTARG" ;;
                v) pkgver="$OPTARG" ;;
                r) pkgrel="$OPTARG" ;;
                P) prefix="$OPTARG" ;;
		u) owner="$OPTARG" ;;
		g) group="$OPTARG" ;;
        esac
done
shift $((OPTIND - 1))

die() {
	echo $* 1>&2
	exit 1
}

pkgfileinfo() {
	zpm shell $pkgfile<<EOS
select $1 from packagefiles
	where path='$2'
	and package||'-'||version||'-'||release = '$pkg'
	;
EOS
}

# if not from a package file, from local db
if [ -z "$pkgfile" ]; then
	die "installing from non-pkgfile not supported"
fi

pkg="$1"
shift

ZPMPKGFILE=$pkgfile
export ZPMPKGFILE

set -e
for path in "$@"; do
	name=$(basename -- "$path")
	dir=$(dirname -- "$path")
	dir=${dir#/}

	if [ "$pkgroot" != '/' ]; then
		dir=$pkgroot/$dir
		dir=${dir%/.}
#		if [ "$dir" = "//" ]; then dir=/ ; fi
	else
		dir="/$dir"
	fi

	# TODO generate some unique hash
	tmppath=$dir/.installing.$name

	printf '%s installing %s\n' $pkg $dir/$name

	fhash=$(pkgfileinfo hash $path)
	mode=$(pkgfileinfo mode $path)
	ftype=$(pkgfileinfo filetype $path)
	: ${owner:=$(pkgfileinfo username $path)}
	: ${group:=$(pkgfileinfo groupname $path)}

	# TODO if the file already exists, and is the correct
	# hash or directory, do nothing

	# can't use install because it's not posix.
	# probably worth writing a zpm-install, but with
	# a different name since that wants to be a package install
	# probably makes the most sense for extract to know how
	# to do the extract to temp and such, then
	# you can just add the -S option (secure)
	#cat <<-EOC
	mkdir -p $dir
	umask 0700
	case $ftype in
		r*) zpm extract $pkgfile $fhash $tmppath
			chown $owner:$group $tmppath
			chmod $mode $tmppath
			# TODO mv -n non-posix, going to need to have extract
			# do all of this
			mv $tmppath $dir/$name
		       	;;
		d*)
			mkdir -m 000 $dir/$name
			chown $owner:$group $dir/$name
			chmod $mode $dir/name
			;;

		*) echo unknown filetype ; exit 1 ;;
	esac

	#EOC
done