#!/usr/bin/env bash
set -euo pipefail
cd "$(dirname "$0")/.."

if [[ "${1:-}" != "--inside" ]]; then
	exec timeout --signal=TERM --kill-after=5s 90s unshare --mount --fork --kill-child=TERM "$0" --inside
fi

root="/tmp/uce-compiler-lock-directory-$$"
site="$root/site"
work="$root/missing/parents/work"
settings="$root/settings.cfg"
log="$root/service.log"
server_pid=""

cleanup() {
	if [[ -n "$server_pid" ]] && kill -0 "$server_pid" 2>/dev/null; then
		kill -TERM "$server_pid" 2>/dev/null || true
		wait "$server_pid" 2>/dev/null || true
	fi
	rm -rf "$root"
}
trap cleanup EXIT
mkdir -p "$site" "$root/run" "$root/session" "$root/upload"
printf '%s\n' 'CLI(Request& context) { print("recursive-lock-directory-ok"); }' >"$site/test.uce"
cp /etc/uce/settings.cfg "$settings"
cat >>"$settings" <<CFG
BIN_DIRECTORY=$work
PRECOMPILE_FILES_IN=$site
SITE_DIRECTORY=$site
FCGI_SOCKET_PATH=$root/run/fastcgi.sock
FCGI_PORT=
CLI_SOCKET_PATH=$root/run/cli.sock
WS_BROKER_SOCKET_PATH=$root/run/ws.sock
HTTP_PORT=
HTTP_DOCUMENT_ROOT=$site
SESSION_PATH=$root/session
TMP_UPLOAD_PATH=$root/upload
WASM_CORE_PATH=$(pwd)/bin/wasm/core.wasm
WORKER_COUNT=1
PROACTIVE_COMPILE_ENABLED=0
CFG
mount --bind "$settings" /etc/uce/settings.cfg

bin/uce_fastcgi.linux.bin >"$log" 2>&1 &
server_pid=$!
deadline=$((SECONDS + 20))
while [[ ! -S "$root/run/cli.sock" ]] && (( SECONDS < deadline )); do sleep 0.05; done
[[ -S "$root/run/cli.sock" ]] || { cat "$log" >&2; exit 1; }

rm -rf "$work"
response=$(curl -sS --max-time 45 --fail-with-body --unix-socket "$root/run/cli.sock" http://localhost/test.uce) || { cat "$log" >&2; exit 1; }
[[ "$response" == *"recursive-lock-directory-ok"* ]] || { printf '%s\n' "$response" >&2; cat "$log" >&2; exit 1; }
find "$work" -type f -name '*.lock' -print -quit | grep -q . || { echo "compiler did not recreate a nested lock path" >&2; cat "$log" >&2; exit 1; }
echo "compiler recursive lock directory passed"