#!/usr/bin/sh

set -eux

SOCAT="$1"
SERVER="$2"

# Meet DBus bus and path name constraints, append own PID for parallel runs
TEST_NAME="$(basename "$0" | tr '-' '_')"_${$}
TEST_DIR="$(mktemp --tmpdir --directory "${TEST_NAME}.XXXXXX")"
PTYS_PID=""
SERVER_PID=""

cd "$TEST_DIR"

cleanup()
{
  [ -z "$SERVER_PID" ] || kill -s INT "$SERVER_PID"
  [ -z "$PTYS_PID" ] || kill "$PTYS_PID"
  wait
  cd -
  rm -rf "$TEST_DIR"
}

trap cleanup EXIT

TEST_CONF="${TEST_NAME}.conf"
TEST_LOG="${TEST_NAME}.log"
BLOCK_SIZE=1024
LOG_MAX_SIZE=$((5 * $BLOCK_SIZE))

cat <<EOF > "$TEST_CONF"
active-console = $TEST_NAME
logsize = $LOG_MAX_SIZE
[$TEST_NAME]
logfile = $TEST_LOG
console-id = $TEST_NAME
EOF

dd if=/dev/zero bs=$BLOCK_SIZE count=$(($LOG_MAX_SIZE / $BLOCK_SIZE)) >> "$TEST_LOG"

"$SOCAT" -u PTY,raw,echo=0,link=remote PTY,raw,echo=0,wait-slave,link=local &
PTYS_PID="$!"
while ! [ -e remote ] || ! [ -e local ]; do sleep 1; done

"$SERVER" --config "$TEST_CONF" "$(realpath local)" &
SERVER_PID="$!"
while ! busctl status --user xyz.openbmc_project.Console."${TEST_NAME}"; do sleep 1; done

echo console-should-log-to-file > remote
sleep 1
grep -LF console-should-log-to-file "$TEST_LOG"

[ -e "$TEST_LOG" ] && [ $(stat -c%s "$TEST_LOG") -le $LOG_MAX_SIZE ]