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

script_dir="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
include_dir="${AVISYNTH_INCLUDE_DIR:-}"

if [[ -z "$include_dir" ]]; then
  for candidate in \
    /tmp/media_batch_avisynth/avisynthplus/avs_core/include \
    /tmp/media_batch_avisynth/install/include/avisynth
  do
    if [[ -f "$candidate/avisynth_c.h" ]]; then
      include_dir="$candidate"
      break
    fi
  done
fi

if [[ -z "$include_dir" || ! -f "$include_dir/avisynth_c.h" ]]; then
  echo "Could not find avisynth_c.h." >&2
  echo "Set AVISYNTH_INCLUDE_DIR to an AviSynth+ include directory." >&2
  exit 1
fi

build_one() {
  local cc="$1"
  local output="$2"
  if ! command -v "$cc" >/dev/null 2>&1; then
    echo "Skipping $output; $cc not found." >&2
    return 0
  fi
  "$cc" -I"$include_dir" -O2 -Wall -Wextra \
    -o "$script_dir/$output" "$script_dir/mbt_avs_runner.c"
  echo "built $script_dir/$output"
}

build_one "${WIN64_CC:-x86_64-w64-mingw32-gcc}" mbt_avs_runner.exe
build_one "${WIN32_CC:-i686-w64-mingw32-gcc}" mbt_avs_runner32.exe