#!/usr/bin/env bash
# lib9p/tests/runtest - Test harness for the 9P `test_server`
#
# Copyright (C) 2025  Luke T. Shumaker <lukeshu@lukeshu.com>
# SPDX-License-Identifier: AGPL-3.0-or-later

set -euE -o pipefail

build_aux=$(realpath --canonicalize-missing -- "${BASH_SOURCE[0]}/../../../build-aux")

if [[ $# != 2 ]]; then
	echo >&2 "Usage: $0 CLIENTSCRIPT EXPLOG"
	exit 2
fi
clientscript="$1"
explog="$2"

cleanup=()
cleanup() {
	{ set +x; } &>/dev/null
	local i
	for ((i = ${#cleanup[@]} - 1; i >= 0; i--)); do
		eval "set -x; ${cleanup[$i]}"
		{ set +x; } &>/dev/null
	done
}
trap cleanup EXIT

logfile=$(mktemp -t lib9p-log.XXXXXXXXXX)
cleanup+=("rm -f -- ${logfile@Q}")

port=$(python -c 'import socket; s=socket.socket(); s.bind(("", 0)); print(s.getsockname()[1]); s.close()')

set -x

"${build_aux}/valgrind" ./tests/test_server/test_server "$port" "$logfile" &
server_pid=$!
cleanup+=("kill $server_pid || true; wait $server_pid || true")
while [[ -d /proc/$server_pid ]] && ! (readlink /proc/$server_pid/fd/* 2>/dev/null | grep -q ^socket:); do sleep 0.1; done

if [[ "$(head -c2 -- "$clientscript")" == '#!' ]]; then
	"$clientscript" "$port"
else
	"${build_aux}/valgrind" "$clientscript" "$port"
fi

wait "$server_pid"
cleanup=("${cleanup[@]::1}")

diff -u -- <(grep -e '^[<>]' -- "$explog") "$logfile"