# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#

PATH="${PATH}:$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

appfsd_options=()
if [ "$1" == "--cachedir" ]; then
	appfsd_options=("${appfsd_options[@]}" '--cachedir' "$2")

	shift; shift;
fi

	site="$1"

	call_appfsd --sqlite3 'DELETE FROM sites WHERE hostname = '"'$site'"'; DELETE FROM packages WHERE hostname = '"'$site'"';' || return 1

	clean
}

function mirror() {
	local site destinationDir
	local baseURL index
	local packageList

	local marker

	site="$1"
	destinationDir="$2"

	baseURL="http://${site}/appfs"
	index="${baseURL}/index"

	if [ ! -e "${destinationDir}" ]; then
		mkdir "${destinationDir}" || return 1
	fi

	marker="$(openssl rand 20 -hex)"

	(
		cd "${destinationDir}" || exit 1

		# XXX:TODO: This does not validate the signature
		curl -sSL "${index}" > "index.${marker}"

		packageListHash="$(cat "index.${marker}" | cut -f 1 -d ,)"
		packageListHashMethod="$(cat "index.${marker}" | cut -f 2 -d ,)"
		#curl -sSL "${...}"

		mv "index.${marker}" index
	) || return 1

	return 0
}

function clean() {
	call_appfsd --tcl "$(cat <<\_EOF_
		unset -nocomplain row
		::appfs::db eval {SELECT sha1, hostname FROM packages;} row {
			set hostname [::appfs::db onecolumn {SELECT hostname FROM sites WHERE hostname = $row(hostname) LIMIT 1;}]
			if {$hostname == ""} {

			ln -fs "${packagedir}"/lib/* /lib/
		fi
	done

	return 0
}

operation="$1"
shift
case "$operation" in
	install)

		install "$@" || exit 1
		exit 0
		;;
	invalidate)
		invalidate || exit 1
		;;
	remove-site)
		remove_site "$@" || exit 1
		;;
	clean)
		clean || exit 1
		;;
	clear)
		clear "$@" || exit 1
		;;
	hoard)
		echo "not implemented" >&2
		exit 1

		hoard "$@" || exit 1
		exit 0
		;;
	mirror)
		echo "not implemented" >&2
		exit 1

		mirror "$@" || exit 1
		exit 0
		;;
	*)
		echo "Usage: appfs-cache {invalidate|clean|clear|clear <package>|remove-site <site>|hoard <package>|mirror <site> <dir>}" >&2

		exit 1
		;;
esac

pkill -HUP appfsd

exit 0