.github/workflows/deploy_to_hf_space.yaml

name: CI/CD to Hugging Face Space with uv

on:
  push:
    branches:
      - main # Or your default branch, e.g., 'master', 'dev'

jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
      - name: Check for HF_TOKEN availability
        id: check_hf_token
        env:
          HF_TOKEN_CHECK: ${{ secrets.HF_TOKEN }} # Pass the secret to an env var for shell check
        run: |
          if [ -z "$HF_TOKEN_CHECK" ]; then
            echo "::notice::HF_TOKEN secret is not set. Hugging Face Space push will be skipped."
            echo "push_enabled=false" >> $GITHUB_OUTPUT
          else
            echo "::notice::HF_TOKEN secret is set. Proceeding with Hugging Face Space push."
            echo "push_enabled=true" >> $GITHUB_OUTPUT
          fi
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          lfs: true

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.10" # Recommended: specify a precise version like '3.10', '3.11', or '3.12'

      - name: Install uv
        # Installs the uv tool on the GitHub Actions runner
        uses: astral-sh/setup-uv@v1

      - name: Check for pyproject.toml existence
        id: check_pyproject
        run: |
          if [ -f requirements.txt ]; then
            echo "::notice::requirements.txt already exists. Skipping uv generation."
            echo "generate_reqs=false" >> $GITHUB_OUTPUT
          elif [ -f pyproject.toml ]; then
            echo "::notice::pyproject.toml found and no requirements.txt. Proceeding with uv pip compile."
            echo "generate_reqs=true" >> $GITHUB_OUTPUT
          else
            echo "::notice::Neither requirements.txt nor pyproject.toml found. Skipping uv pip compile."
            echo "generate_reqs=false" >> $GITHUB_OUTPUT
          fi

      - name: Generate requirements.txt using uv
        id: generate_reqs
        # This step will only run if pyproject.toml was found in the previous step
        if: ${{ steps.check_pyproject.outputs.generate_reqs == 'true' }}
        run: |
          # Use uv pip compile to generate a locked requirements.txt from pyproject.toml
          # This ensures reproducibility.
          uv export --no-hashes --format requirements-txt > requirements.txt
          # uv pip compile pyproject.toml -o requirements.txt

          # Check if requirements.txt was created
          if [ -f requirements.txt ]; then
            echo "requirements.txt generated successfully:"
            cat requirements.txt
          else
            echo "Error: requirements.txt was not generated despite pyproject.toml existing."
            exit 1
          fi

      - name: Commit requirements.txt if changed
        if: ${{ steps.check_pyproject.outputs.generate_reqs == 'true' }}
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git add requirements.txt
          git commit -m "chore: update requirements.txt [auto-generated by CI]"
          echo "requirements.txt committed."

      - name: Push to HuggingFace Space
        if: ${{ steps.check_hf_token.outputs.push_enabled == 'true' }}
        env:
          HF_TOKEN: ${{ secrets.HF_TOKEN }}
          FORCE_PUSH: ${{ secrets.FORCE_PUSH }}
        run: |
          if [ -z "$FORCE_PUSH" ]; then
            echo "::notice::FORCE_PUSH secret is not set."
            git push https://GF-John:$HF_TOKEN@huggingface.co/spaces/GF-John/sam3 main
          else
            echo "::notice::FORCE_PUSH secret is set. Doing Force Push to Hugging Face Space."
            git push -f https://GF-John:$HF_TOKEN@huggingface.co/spaces/GF-John/sam3 main
          fi