#!/bin/sh
set -eu

cc_bin=${CC_BIN:-cc}
source_file=${SOURCE_FILE:-tests/system/freebsd-syscall-mapping.c}

if ! command -v "$cc_bin" >/dev/null 2>&1; then
  echo "C compiler not found: $cc_bin" >&2
  exit 1
fi
if [ ! -f "$source_file" ]; then
  echo "Source file not found: $source_file" >&2
  exit 1
fi

cleanup=0
if [ -n "${WORKDIR:-}" ]; then
  workdir=$WORKDIR
  mkdir -p "$workdir"
else
  workdir=$(mktemp -d /tmp/fruix-freebsd-syscall-mapping.XXXXXX)
  cleanup=1
fi

if [ "${KEEP_WORKDIR:-0}" -eq 1 ]; then
  cleanup=0
fi

cleanup_workdir() {
  if [ "$cleanup" -eq 1 ]; then
    rm -rf "$workdir"
  fi
}
trap cleanup_workdir EXIT INT TERM

binary=$workdir/freebsd-syscall-mapping
compile_log=$workdir/compile.log
regular_out=$workdir/regular.out
regular_err=$workdir/regular.err
root_out=$workdir/root.out
root_err=$workdir/root.err
metadata_file=$workdir/freebsd-syscall-mapping-metadata.txt

printf 'Working directory: %s\n' "$workdir"
printf 'Compiler: %s\n' "$cc_bin"

"$cc_bin" -Wall -Wextra -std=c11 -I/usr/local/include "$source_file" -o "$binary" >"$compile_log" 2>&1

set +e
"$binary" >"$regular_out" 2>"$regular_err"
regular_rc=$?
set -e
if [ "$regular_rc" -ne 0 ]; then
  echo "regular syscall mapping checks failed" >&2
  cat "$regular_out" >&2 || true
  cat "$regular_err" >&2 || true
  exit 1
fi

set +e
sudo "$binary" --root-tests >"$root_out" 2>"$root_err"
root_rc=$?
set -e
if [ "$root_rc" -ne 0 ]; then
  echo "root syscall mapping checks failed" >&2
  cat "$root_out" >&2 || true
  cat "$root_err" >&2 || true
  exit 1
fi

cat >"$metadata_file" <<EOF
source_file=$source_file
binary=$binary
compile_log=$compile_log
regular_out=$regular_out
regular_err=$regular_err
regular_rc=$regular_rc
root_out=$root_out
root_err=$root_err
root_rc=$root_rc
regular_output_begin
$(cat "$regular_out")
regular_output_end
root_output_begin
$(cat "$root_out")
root_output_end
EOF

if [ -n "${METADATA_OUT:-}" ]; then
  mkdir -p "$(dirname "$METADATA_OUT")"
  cp "$metadata_file" "$METADATA_OUT"
fi

printf 'PASS freebsd-syscall-mapping\n'
printf 'Metadata file: %s\n' "$metadata_file"
if [ -n "${METADATA_OUT:-}" ]; then
  printf 'Copied metadata to: %s\n' "$METADATA_OUT"
fi
printf '%s\n' '--- regular output ---'
cat "$regular_out"
printf '%s\n' '--- root output ---'
cat "$root_out"
printf '%s\n' '--- metadata ---'
cat "$metadata_file"