#!/usr/bin/env bash
set -euo pipefail

ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
BINDINGS_DIR="$ROOT_DIR/src/LibNftables.Bindings"
WRAP_FILE="$BINDINGS_DIR/Generated/libnftables_wrap.c"
OUT_DIR="$BINDINGS_DIR/runtimes/linux-x64/native"
OUT_FILE="$OUT_DIR/libLibNftablesBindings.so"

if [[ ! -f "$WRAP_FILE" ]]; then
  echo "Missing SWIG wrapper: $WRAP_FILE" >&2
  echo "Run ./eng/regen-bindings.sh first." >&2
  exit 1
fi

mkdir -p "$OUT_DIR"

CFLAGS="$(pkg-config --cflags libnftables 2>/dev/null || true)"
LIBS="$(pkg-config --libs libnftables 2>/dev/null || echo '-lnftables')"

gcc -fPIC -shared -O2 \
  $CFLAGS \
  -I/usr/include \
  "$WRAP_FILE" \
  -o "$OUT_FILE" \
  $LIBS

echo "Built native wrapper: $OUT_FILE"