playwright/.github/workflows/roll_chromium_build.yml

name: Trigger Chromium build
on:
  workflow_dispatch:
  schedule:
    # At 10:00am UTC  (3AM PST) on Monday and Friday
    - cron: "0 10 * * 1,5"
jobs:
  trigger-chromium-build:
    name: Trigger Build
    runs-on: ubuntu-20.04
    steps:
      - uses: actions/checkout@v2
      - uses: actions/github-script@v4
        id: bump-chromium
        with:
          script: |
            const fs = require('fs');
            const response = await github.request('https://omahaproxy.appspot.com/all.json');
            const linux = response.data.find(({os}) => os === 'linux');
            const linuxCanary = linux.versions.find(version => version.channel === 'canary');
            fs.writeFileSync('browser_patches/chromium/BUILD_NUMBER', `${linuxCanary.branch_base_position}\n`)
            core.setOutput('GIT_COMMIT', linuxCanary.chromium_commit);
            core.setOutput('BASE_POSITION', linuxCanary.branch_base_position);            
      - name: Prepare branch
        id: prepare-branch
        run: |
          BASE_POSITION="${{ steps.bump-chromium.outputs.BASE_POSITION }}"
          BRANCH_NAME="roll-chromium/${BASE_POSITION}"
          echo "::set-output name=BRANCH_NAME::$BRANCH_NAME"
          git config --global user.name github-actions
          git config --global user.email 41898282+github-actions[bot]@users.noreply.github.com
          git checkout -b "$BRANCH_NAME"
          git add .
          git commit -m "browser(chromium): roll to r${BASE_POSITION}"
          git push origin $BRANCH_NAME          
      - name: Create Pull Request
        uses: actions/github-script@v4
        with:
          script: |
            await github.pulls.create({
              owner: 'microsoft',
              repo: 'playwright',
              head: 'microsoft:${{ steps.prepare-branch.outputs.BRANCH_NAME }}',
              base: 'master',
              title: 'browser(chromium): roll to r${{ steps.bump-chromium.outputs.BASE_POSITION }}',
              body: 'Upstream commit: https://github.com/chromium/chromium/commit/${{ steps.bump-chromium.outputs.GIT_COMMIT }}',
            });