name: Pull request icon preview

on:
  pull_request:
    paths:
      - 'icons/*.svg'

jobs:
  generate-changed-icons-comment:
    name: Generate Changed Icons Comment
    runs-on: ubuntu-latest
    permissions:
      contents: read
      pull-requests: write

    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version-file: 'package.json'

      - name: Get changed files
        id: changed-files
        uses: tj-actions/changed-files@v46
        with:
          files: icons/*.svg

      - uses: actions/setup-node@v4
      - name: Install svgson for code preview (safer and faster than installing all deps)
        run: npm install svgson@5.3.1 --force

      - name: Save PR number
        run: |
          mkdir -p ./pr
          echo ${{ github.event.number }} > ./pr/NR

      - name: Generate comment markup
        run: node ./scripts/generateChangedIconsCommentMarkup.mts >> ./pr/comment-markup.md
        id: comment-markup
        env:
          CHANGED_FILES: ${{ steps.changed-files.outputs.all_changed_files }}

      - uses: actions/upload-artifact@v4
        with:
          name: pr_number
          path: pr/