sync_lab_release.yml

name: Check for new JupyterLab releases

on:
  schedule:
    - cron: 30 17 * * *
  workflow_dispatch:

permissions:
  contents: write
  pull-requests: write

jobs:
  check_for_lab_updates:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v3

      - name: Set up Python
        uses: actions/setup-python@v4
        with:
          python-version: '3.9'

      - name: Install Python dependencies
        run: |
          python -m pip install tbump

      - name: Check for new releases
        shell: bash
        run: |
          set -eux
          export LATEST=$(python scripts/get_latest_lab_version.py)
          echo "latest=${LATEST}" >> $GITHUB_ENV
          tbump --only-patch ${LATEST}-1 --non-interactive
          if [[ ! -z "$(git status --porcelain package.json)" ]]; then
            echo "update_available='true'" >> $GITHUB_ENV
          fi

      - name: Install Node
        if: env.update_available == 'true'
        uses: actions/setup-node@v3
        with:
          node-version: '14.x'
      
      - name: Install npm dependencies
        if: env.update_available == 'true'
        run: |
          npm install --global yarn
          yarn install

      - name: Install conda
        if: env.update_available == 'true'
        uses: s-weigand/setup-conda@v1

      - name: Install conda dependencies
        if: env.update_available == 'true'
        run: conda install -c conda-forge conda conda-lock -y

      - name: Create a PR if needed
        if: env.update_available == 'true'
        shell: bash
        env:
          GITHUB_USER: ${{ secrets.GITHUB_USER }}
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          set -eux
          yarn update_conda_lock
          export LATEST=${{ env.latest }}
          export BRANCH_NAME=update-to-v${LATEST}
          # this will fail if the branch already exists which means we won't have duplicate PRs
          git checkout -b "${BRANCH_NAME}"
          git config user.name "JupyterLab Desktop Bot"
          git config user.email 'jupyterlab-bot@users.noreply.github.com'

          git commit . -m "Update to JupyterLab v${LATEST}"

          git push --set-upstream origin "${BRANCH_NAME}"            
          hub pull-request -m "Update to JupyterLab v${LATEST}" \
              -m "New JupyterLab release [v${LATEST}](https://github.com/jupyterlab/jupyterlab/releases/tag/v${LATEST}) is available. Please review the lock file carefully.".