update_v8_snapshot_cache.yml

name: Update V8 Snapshot Cache
on:
  schedule:
    # Run everyday except Wednesday at 00:00 UTC
    - cron: '0 0 * * 0,1,2,4,5,6'
    # Run every Wednesday at 00:00 UTC
    - cron: '0 0 * * 3'
  push:
    branches:
      - 'release/**'
    paths-ignore:
      - .husky/**
      - .vscode/**
      - .eslintrc.js
      - .gitattributes
      - .gitignore
      - .percy.yml
      - .prettierignore
      - .releaserc.js
      - .yarnclean
      - CHANGELOG.md
      - CODE_OF_CONDUCT.md
      - CONTRIBUTING.md
      - LICENSE
      - README.md
      - ROADMAP.md
      - SECURITY.md
  workflow_dispatch:
    inputs:
      branch:
        description: 'Branch to update'
        required: true
        default: 'develop'
      generate_from_scratch:
        description: 'Generate from scratch'
        type: boolean
        default: false
      commit_directly_to_branch:
        description: 'Commit directly to branch'
        type: boolean
        default: false
concurrency: 
  group: ${{ inputs.branch || github.ref }}
  cancel-in-progress: true
jobs:
  update-v8-snapshot-cache:
    strategy:
      max-parallel: 3
      matrix:
        platform: [ubuntu-latest, macos-latest, windows-latest]
    runs-on: ${{ matrix.platform }}
    env:
      CYPRESS_BOT_APP_ID: ${{ secrets.RAM_APP }}
      BASE_BRANCH: ${{ inputs.branch || github.ref_name }}
      # Flex the generate from scratch option based on manual input or if we are on the weekly schedule
      GENERATE_FROM_SCRATCH: ${{ inputs.generate_from_scratch == true || (github.event_name == 'schedule' && github.event.schedule == '0 0 * * 3') }}
    steps:
      - name: Determine snapshot files - Windows
        if: ${{ matrix.platform == 'windows-latest' }}
        run: |
          echo "SNAPSHOT_FILES='tooling\v8-snapshot\cache\win32\snapshot-meta.json'" >> $GITHUB_ENV
          echo "PLATFORM=windows" >> $GITHUB_ENV
        shell: bash
      - name: Determine snapshot files - Linux
        if: ${{ matrix.platform == 'ubuntu-latest' }}
        run: |
          echo "SNAPSHOT_FILES='tooling/v8-snapshot/cache/linux/snapshot-meta.json'" >> $GITHUB_ENV
          echo "PLATFORM=linux" >> $GITHUB_ENV
      - name: Determine snapshot files - Mac
        if: ${{ matrix.platform == 'macos-latest' }}
        run: |
          echo "SNAPSHOT_FILES='tooling/v8-snapshot/cache/darwin/snapshot-meta.json'" >> $GITHUB_ENV
          echo "PLATFORM=darwin" >> $GITHUB_ENV
      - name: Install setuptools - Mac
        if: ${{ matrix.platform == 'macos-latest' }}
        run: sudo -H pip install setuptools
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          token: ${{ secrets.BOT_GITHUB_ACTION_TOKEN }}
          ref: ${{ env.BASE_BRANCH }}
      - name: Set committer info
        ## attribute the commit to cypress-bot: https://github.community/t/logging-into-git-as-a-github-app/115916
        run: |
          git config --local user.email "${{ env.CYPRESS_BOT_APP_ID }}+cypress-bot[bot]@users.noreply.github.com"
          git config --local user.name "cypress-bot[bot]"
      - name: Set up Node.js
        uses: actions/setup-node@v4
        with:
          node-version: 18
          cache: 'yarn'
      - name: Run yarn
        # set the timeout here to try and deal with Windows slowness
        run: yarn --network-timeout 300000
      - name: Run build
        run: yarn build
      - name: Generate prod snapshot from scratch
        if: ${{ env.GENERATE_FROM_SCRATCH == 'true' }}
        run: yarn cross-env V8_SNAPSHOT_FROM_SCRATCH=1 V8_UPDATE_METAFILE=1 yarn build-v8-snapshot-prod
      - name: Generate prod snapshot iteratively
        if: ${{ env.GENERATE_FROM_SCRATCH != 'true' }}
        run: yarn cross-env V8_UPDATE_METAFILE=1 yarn build-v8-snapshot-prod
      - name: Check for v8 snapshot cache changes
        id: check-for-v8-snapshot-cache-changes
        run: |
          echo "has_changes=$(test "$(git status --porcelain -- ${{ env.SNAPSHOT_FILES }})" && echo 'true')" >> $GITHUB_OUTPUT
        shell: bash
      - name: Determine branch name - commit directly to branch
        if: ${{ inputs.commit_directly_to_branch == true }}
        run: |
          echo "BRANCH_NAME=${{ env.BASE_BRANCH }}" >> $GITHUB_ENV
          echo "BRANCH_EXISTS=true" >> $GITHUB_ENV
        shell: bash
      - name: Determine branch name - commit to separate branch
        if: ${{ inputs.commit_directly_to_branch != true }}
        run: |
          echo "BRANCH_NAME=update-v8-snapshot-cache-on-${{ env.BASE_BRANCH }}-${{ env.PLATFORM }}" >> $GITHUB_ENV
          echo "BRANCH_EXISTS=$(git show-ref --verify --quiet refs/remotes/origin/update-v8-snapshot-cache-on-${{ env.BASE_BRANCH }}-${{ env.PLATFORM }} && echo 'true')" >> $GITHUB_ENV
        shell: bash
      - name: Check number of existing prs
        id: check-number-of-existing-prs
        run: |
          echo "number_of_prs_for_branch=$(gh api '/repos/cypress-io/cypress/pulls?head=cypress-io:${{ env.BRANCH_NAME }}' --jq length)" >> $GITHUB_OUTPUT
        env:
          GH_TOKEN: ${{ secrets.BOT_GITHUB_ACTION_TOKEN }}
        shell: bash
      - name: Check need for PR or branch update
        id: check-need-for-pr
        run: |
          echo "needs_pr=${{ steps.check-for-v8-snapshot-cache-changes.outputs.has_changes == 'true' && env.BRANCH_NAME != env.BASE_BRANCH && steps.check-number-of-existing-prs.outputs.number_of_prs_for_branch == '0' }}" >> $GITHUB_OUTPUT
          echo "needs_branch_update=${{ steps.check-for-v8-snapshot-cache-changes.outputs.has_changes == 'true' && env.BRANCH_EXISTS == 'true' }}" >> $GITHUB_OUTPUT
        env:
          GH_TOKEN: ${{ secrets.BOT_GITHUB_ACTION_TOKEN }}
        shell: bash
      ## Update available and a branch/PR already exists
      - name: Checkout existing branch
        if: ${{ steps.check-need-for-pr.outputs.needs_branch_update == 'true' }}
        run: |
          git stash push -- ${{ env.SNAPSHOT_FILES }}
          git reset --hard
          git checkout ${{ env.BRANCH_NAME }}
          git pull origin ${{ env.BRANCH_NAME }}
          git merge -Xtheirs stash
      ## Update available and a PR doesn't already exist
      - name: Checkout new branch
        if: ${{ steps.check-need-for-pr.outputs.needs_branch_update != 'true' }}
        run: git checkout -b ${{ env.BRANCH_NAME }} ${{ env.BASE_BRANCH }}
      ## Commit changes if present
      - name: Commit the changes
        if: ${{ steps.check-for-v8-snapshot-cache-changes.outputs.has_changes == 'true' }}
        run: |
          git diff-index --quiet HEAD || git commit -am "chore: updating v8 snapshot cache"
      ## Push branch
      - name: Push branch to remote
        if: ${{ steps.check-for-v8-snapshot-cache-changes.outputs.has_changes == 'true' }}
        run: git push origin ${{ env.BRANCH_NAME }}
      # PR needs to be created
      - name: Create Pull Request
        if: ${{ steps.check-need-for-pr.outputs.needs_pr == 'true' }}
        uses: actions/github-script@v7
        with:
          script: |
            const { createPullRequest } = require('./scripts/github-actions/create-pull-request.js')

            await createPullRequest({
              context,
              github,
              baseBranch: '${{ env.BASE_BRANCH }}',
              branchName: '${{ env.BRANCH_NAME }}',
              description: 'Update v8 snapshot cache - ${{ env.PLATFORM }}',
              body: 'This PR was automatically generated by the [update-v8-snapshot-cache](https://github.com/cypress-io/cypress/actions/workflows/update_v8_snapshot_cache.yml) github action.',
              reviewers: ['ryanthemanuel']
            })