publish.yml

name: Publish to npm

on:
  release:
    types: [published]

jobs:
  npm-publish:
    name: Publish to npm
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup Node
        uses: actions/setup-node@v4
        with:
          node-version: '18'
          registry-url: 'https://registry.npmjs.org'

      - name: Download prebuilds from release
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          set -euo pipefail
          TAG="${{ github.event.release.tag_name }}"

          echo "Downloading assets from release ${TAG}"
          mkdir -p release-assets
          gh release download "$TAG" --dir release-assets

          echo "Downloaded assets:"
          ls -la release-assets/

          # Reconstruct the prebuilds/ directory structure.
          # Assets are named <platform>-<arch>-<filename>.node
          # (e.g., linux-x64-libraw.js.node, darwin-arm64-libraw.js.node)
          # We need to place them at prebuilds/<platform>-<arch>/<filename>.node
          mkdir -p prebuilds
          for f in release-assets/*.node; do
            [ -f "$f" ] || continue
            fname=$(basename "$f")
            # Extract platform-arch prefix (everything before the last dash-separated filename)
            # e.g., "linux-x64-libraw.js.node" -> platform_arch="linux-x64", node_file="libraw.js.node"
            # Split on the second dash: platform is first token, arch is second, rest is filename
            platform=$(echo "$fname" | cut -d'-' -f1)
            arch=$(echo "$fname" | cut -d'-' -f2)
            node_file=$(echo "$fname" | cut -d'-' -f3-)
            platform_arch="${platform}-${arch}"

            mkdir -p "prebuilds/${platform_arch}"
            echo "Placing ${fname} -> prebuilds/${platform_arch}/${node_file}"
            cp "$f" "prebuilds/${platform_arch}/${node_file}"
          done

      - name: Verify prebuilds structure
        run: |
          echo "Prebuild contents:"
          find prebuilds -type f -name "*.node"
          # Expect:
          # prebuilds/linux-x64/libraw.js.node
          # prebuilds/darwin-arm64/libraw.js.node

          # Fail if no prebuilds were found
          count=$(find prebuilds -type f -name "*.node" | wc -l)
          if [ "$count" -lt 1 ]; then
            echo "ERROR: No .node prebuild files found"
            exit 1
          fi
          echo "Found ${count} prebuild(s)"

      - name: Install dependencies and build TypeScript
        run: |
          npm ci
          npx tsc

      - name: Dry-run publish (verify tarball contents)
        run: npm pack --dry-run

      - name: Publish to npm
        run: npm publish
        env:
          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}