- name: Prepare lib dir
  run: mkdir -p lib

# Linux
- name: Fetch ONNX Runtime (Linux)
  if: runner.os == 'Linux'
  env:
    ORT_VER: 1.22.0
  run: |
    set -euo pipefail
    ARCH="$(uname -m)"
    case "$ARCH" in
      x86_64)  URL="https://github.com/microsoft/onnxruntime/releases/download/v${ORT_VER}/onnxruntime-linux-x64-${ORT_VER}.tgz" ;;
      aarch64) URL="https://github.com/microsoft/onnxruntime/releases/download/v${ORT_VER}/onnxruntime-linux-aarch64-${ORT_VER}.tgz" ;;
      *) echo "Unsupported arch $ARCH"; exit 1 ;;
    esac
    curl -fsSL -o ort.tgz "$URL"
    tar -xzf ort.tgz
    cp -v onnxruntime-*/lib/libonnxruntime.so* lib/

# macOS
- name: Fetch ONNX Runtime (macOS)
  if: runner.os == 'macOS'
  env:
    ORT_VER: 1.22.0
  run: |
    set -euo pipefail
    curl -fsSL -o ort.tgz "https://github.com/microsoft/onnxruntime/releases/download/v${ORT_VER}/onnxruntime-osx-universal2-${ORT_VER}.tgz"
    tar -xzf ort.tgz
    # copy the main dylib; rename to stable name if needed
    cp -v onnxruntime-*/lib/libonnxruntime*.dylib lib/
    # optional: ensure a stable name
    if [ ! -f lib/libonnxruntime.dylib ]; then
      cp -v lib/libonnxruntime*.dylib lib/libonnxruntime.dylib
    fi

# Windows
- name: Fetch ONNX Runtime (Windows)
  if: runner.os == 'Windows'
  shell: pwsh
  env:
    ORT_VER: 1.22.0
  run: |
    $url = "https://github.com/microsoft/onnxruntime/releases/download/v$env:ORT_VER/onnxruntime-win-x64-$env:ORT_VER.zip"
    Invoke-WebRequest $url -OutFile ort.zip
    Expand-Archive ort.zip -DestinationPath ort
    $dll = Get-ChildItem -Recurse -Path ort -Filter onnxruntime.dll | Select-Object -First 1
    Copy-Item $dll.FullName lib\onnxruntime.dll