Auto-Tag on Version Change workflow (xai-org/xai-sdk-python)

name: Auto-Tag on Version Change
 
on:
  push:
    branches: [main]
    paths:
      - src/xai_sdk/__about__.py
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  auto-tag:
    timeout-minutes: 30
    runs-on: xai-sdk-python-runner
    permissions:
      contents: write
    steps:
      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
        with:
          fetch-depth: 0 # Fetch all history to compare commits
 
      - name: Set up Python
        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
        with:
          cache: 'pip'
          python-version: "3.10"
 
      - name: Install uv
        uses: astral-sh/setup-uv@c7f87aa956e4c323abf06d5dec078e358f6b4d04 # v6.0.0
        with:
          version: "0.7.3"
 
      - name: Install dependencies
        run: uv sync --locked
 
      - name: Check version update and create tag
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          # Get the new version (from the current __about__.py, already checked out at HEAD)
          export NEW_VERSION=$(uv run hatch version)
          echo "New version: $NEW_VERSION"
 
          # Get the previous version (from the previous commit's __about__.py)
          PREVIOUS_COMMIT=$(git rev-parse origin/main^)
          git checkout $PREVIOUS_COMMIT -- src/xai_sdk/__about__.py
          export PREVIOUS_VERSION=$(uv run hatch version)
          echo "Previous version: $PREVIOUS_VERSION"
 
          # Restore the modified __about__.py to the latest commit
          git restore src/xai_sdk/__about__.py
 
          # Compare versions semantically to ensure the new version is greater
          uv run python -c "
          import os
          from packaging import version
 
          previous_version = os.environ['PREVIOUS_VERSION']
          new_version = os.environ['NEW_VERSION']
 
          prev_ver = version.parse(previous_version)
          new_ver = version.parse(new_version)
 
          if new_ver <= prev_ver:
              print(f'Error: New version {new_version} is not greater than previous version {previous_version}')
              exit(1)
          else:
              print('Version bump is valid.')
          "
 
          # If all checks pass, create and push the tag, assuming it doesn't already exist
          if [ -n "$(git tag -l "v${NEW_VERSION}")" ]; then
            echo "Tag v${NEW_VERSION} already exists, skipping."
            exit 0
          fi
 
          git config --global user.email "actions@github.com"
          git config --global user.name "GitHub Actions"
 
          git tag -a v${NEW_VERSION} -m "Release version ${NEW_VERSION} of the xAI Python SDK"
          git push origin v${NEW_VERSION}