#!/usr/bin/env bash
# Copyright (c) 2012 Felipe Contreras

alias=$1
url=$2

dir="$GIT_DIR/testgit/$alias"
prefix="refs/testgit/$alias"
refspec="refs/heads/*:${prefix}/heads/*"

gitmarks="$dir/git.marks"
testgitmarks="$dir/testgit.marks"

export GIT_DIR="$url/.git"

mkdir -p "$dir"

test -e "$gitmarks" || > "$gitmarks"
test -e "$testgitmarks" || > "$testgitmarks"

while read line
do
	case $line in
	capabilities)
		echo 'import'
		echo 'export'
		echo "refspec $refspec"
		echo "*import-marks $gitmarks"
		echo "*export-marks $gitmarks"
		echo
		;;
	list)
		git for-each-ref --format='? %(refname)' 'refs/heads/'
		head=$(git symbolic-ref HEAD)
		echo "@$head HEAD"
		echo
		;;
	import*)
		# read all import lines
		while true
		do
			ref="${line#* }"
			refs="$refs $ref"
			read line
			test "${line%% *}" != "import" && break
		done

		echo "feature import-marks=$gitmarks"
		echo "feature export-marks=$gitmarks"
		git fast-export --use-done-feature --{import,export}-marks="$testgitmarks" $refs |
		sed -e "s#refs/heads/#${prefix}/heads/#g"
		;;
	export)
		git fast-import --{import,export}-marks="$testgitmarks" --quiet
		echo
		;;
	'')
		exit
		;;
	esac
done