# Shell library to run git-daemon in tests.  Ends the test early if
# GIT_TEST_GIT_DAEMON is not set.
#
# Usage:
#
#	. ./test-lib.sh
#	. "$TEST_DIRECTORY"/lib-git-daemon.sh
#	start_git_daemon
#
#	test_expect_success '...' '
#		...
#	'
#
#	test_expect_success ...
#
#	stop_git_daemon
#	test_done

test_tristate GIT_TEST_GIT_DAEMON
if test $GIT_TEST_GIT_DAEMON = false
{
	setglobal skip_all = '"git-daemon testing disabled (unset GIT_TEST_GIT_DAEMON to enable)'"
	test_done
}

if test_have_prereq !PIPE
{
	test_skip_or_die $GIT_TEST_GIT_DAEMON "file system does not support FIFOs"
}

setglobal LIB_GIT_DAEMON_PORT = $(LIB_GIT_DAEMON_PORT-${this_test#t})

setglobal GIT_DAEMON_PID = ''
setglobal GIT_DAEMON_DOCUMENT_ROOT_PATH = ""$PWD"/repo"
setglobal GIT_DAEMON_URL = "git://127.0.0.1:$LIB_GIT_DAEMON_PORT"

proc start_git_daemon {
	if test -n $GIT_DAEMON_PID
	{
		error "start_git_daemon already called"
	}

	mkdir -p $GIT_DAEMON_DOCUMENT_ROOT_PATH

	trap 'code=$?; stop_git_daemon; (exit $code); die' EXIT

	say >&3 "Starting git daemon ...> !3 "Starting git daemon ..."
	mkfifo git_daemon_output
	git daemon --listen=127.0.0.1 --port="$LIB_GIT_DAEMON_PORT" \
		--reuseaddr --verbose \
		--base-path="$GIT_DAEMON_DOCUMENT_ROOT_PATH" \
		@Argv $GIT_DAEMON_DOCUMENT_ROOT_PATH \
		> !3 !2 >git_daemon_output &
	setglobal GIT_DAEMON_PID = $BgPid
	do {
		read line <&7
		echo >&4 $line> !4 "$line"
		cat <&7 > !4 &
	} 7<git_daemon_output &&

	# Check expected output
	if test x"$[expr $line : "\[[0-9]*\] \(.*\)]" != x"Ready to rumble"
	{
		kill $GIT_DAEMON_PID
		wait $GIT_DAEMON_PID
		trap 'die' EXIT
		test_skip_or_die $GIT_TEST_GIT_DAEMON \
			"git daemon failed to start"
	}
}

proc stop_git_daemon {
	if test -z $GIT_DAEMON_PID
	{
		return
	}

	trap 'die' EXIT

	# kill git-daemon child of git
	say >&3 "Stopping git daemon ...> !3 "Stopping git daemon ..."
	kill $GIT_DAEMON_PID
	wait $GIT_DAEMON_PID > !3 !2 > !4
	setglobal ret = $Status
	if test_match_signal 15 $Status
	{
		error "git daemon exited with status: $ret"
	}
	setglobal GIT_DAEMON_PID = ''
	rm -f git_daemon_output
}