Project_Chronos/.github/workflows/pypi.yml at main · FonaTech/Project_Chronos · GitHub

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name: Publish to PyPI

on:
  workflow_dispatch:
  release:
    types: [published]

concurrency:
  group: pypi-${{ github.event.release.tag_name || github.ref_name }}
  cancel-in-progress: true

permissions:
  contents: read

jobs:
  build:
    name: Build distribution
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.11"

      - name: Install build tools
        run: |
          python -m pip install --upgrade pip
          python -m pip install build twine

      - name: Build sdist and wheel
        run: python -m build

      - name: Check distribution metadata
        run: python -m twine check dist/*

      - name: Upload dist artifact
        uses: actions/upload-artifact@v4
        with:
          name: pypi-dist
          path: dist/*

  publish:
    name: Publish Project_Chronos to PyPI
    needs: build
    runs-on: ubuntu-latest
    environment:
      name: pypi
      url: https://pypi.org/project/Project_Chronos/
    permissions:
      id-token: write
      contents: read

    steps:
      - name: Download dist artifact
        uses: actions/download-artifact@v4
        with:
          name: pypi-dist
          path: dist

      - name: Check whether this version is already on PyPI
        id: pypi_version
        shell: bash
        run: |
          python - <<'PY' >> "$GITHUB_OUTPUT"
          import glob
          import re
          import urllib.error
          import urllib.parse
          import urllib.request
          import zipfile

          wheels = glob.glob("dist/*.whl")
          if not wheels:
              raise SystemExit("No wheel artifact found in dist/")

          with zipfile.ZipFile(wheels[0]) as zf:
              metadata_name = next(
                  name for name in zf.namelist()
                  if name.endswith(".dist-info/METADATA")
              )
              metadata = zf.read(metadata_name).decode("utf-8", errors="replace")

          project = version = ""
          for line in metadata.splitlines():
              if line.startswith("Name: "):
                  project = line.split(":", 1)[1].strip()
              elif line.startswith("Version: "):
                  version = line.split(":", 1)[1].strip()

          if not re.fullmatch(r"[A-Za-z0-9_.-]+", project or ""):
              raise SystemExit(f"Invalid project name from wheel metadata: {project!r}")
          if not version:
              raise SystemExit("Missing version in wheel metadata")

          url = f"https://pypi.org/pypi/{urllib.parse.quote(project)}/{urllib.parse.quote(version)}/json"
          try:
              with urllib.request.urlopen(url, timeout=20) as response:
                  exists = response.status == 200
          except urllib.error.HTTPError as exc:
              if exc.code == 404:
                  exists = False
              else:
                  raise

          print(f"project={project}")
          print(f"version={version}")
          print(f"exists={str(exists).lower()}")
          PY

      - name: Publish to PyPI
        if: steps.pypi_version.outputs.exists != 'true'
        uses: pypa/gh-action-pypi-publish@release/v1

      - name: Skip existing PyPI version
        if: steps.pypi_version.outputs.exists == 'true'
        run: |
          echo "${{ steps.pypi_version.outputs.project }} ${{ steps.pypi_version.outputs.version }} already exists on PyPI; skipping publish."