update-pull-request.yml

name: Update pull request

on:
  issue_comment:
    types:
      - created

jobs:
  is-fork-pull-request:
    name: Determine whether this issue comment was on a pull request from a fork
    if: ${{ github.event.issue.pull_request && startsWith(github.event.comment.body, '@metamaskbot update-pr') }}
    runs-on: ubuntu-latest
    outputs:
      IS_FORK: ${{ steps.is-fork.outputs.IS_FORK }}
    steps:
      - uses: actions/checkout@v3
      - name: Determine whether this PR is from a fork
        id: is-fork
        run: echo "IS_FORK=$(gh pr view --json isCrossRepository --jq '.isCrossRepository' "${PR_NUMBER}" )" >> "$GITHUB_OUTPUT"
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PR_NUMBER: ${{ github.event.issue.number }}

  react-to-comment:
    name: React to the comment
    runs-on: ubuntu-latest
    needs: is-fork-pull-request
    # Early exit if this is a fork, since later steps are skipped for forks.
    if: ${{ needs.is-fork-pull-request.outputs.IS_FORK == 'false' }}
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3
      - name: React to the comment
        run: |
          gh api \
            --method POST \
            -H "Accept: application/vnd.github+json" \
            -H "X-GitHub-Api-Version: 2022-11-28" \
            "/repos/${REPO}/issues/comments/${COMMENT_ID}/reactions" \
            -f content='+1'
        env:
          COMMENT_ID: ${{ github.event.comment.id }}
          GITHUB_TOKEN: ${{ secrets.PULL_REQUEST_UPDATE_TOKEN }}
          REPO: ${{ github.repository }}

  prepare:
    name: Prepare dependencies
    runs-on: ubuntu-latest
    needs: is-fork-pull-request
    # Early exit if this is a fork, since later steps are skipped for forks.
    if: ${{ needs.is-fork-pull-request.outputs.IS_FORK == 'false' }}
    outputs:
      COMMIT_SHA: ${{ steps.commit-sha.outputs.COMMIT_SHA }}
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3
      - name: Checkout pull request
        run: gh pr checkout "${PR_NUMBER}"
        env:
          GITHUB_TOKEN: ${{ secrets.PULL_REQUEST_UPDATE_TOKEN }}
          PR_NUMBER: ${{ github.event.issue.number }}
      - name: Use Node.js
        uses: actions/setup-node@v3
        with:
          node-version-file: '.nvmrc'
          cache: 'yarn'
      - name: Install Yarn dependencies
        run: yarn --immutable
      - name: Get commit SHA
        id: commit-sha
        run: echo "COMMIT_SHA=$(git rev-parse --short HEAD)" >> "$GITHUB_OUTPUT"

  dedupe-yarn-lock:
    name: Deduplicate yarn.lock
    runs-on: ubuntu-latest
    needs: prepare
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3
      - name: Checkout pull request
        run: gh pr checkout "${PR_NUMBER}"
        env:
          GITHUB_TOKEN: ${{ secrets.PULL_REQUEST_UPDATE_TOKEN }}
          PR_NUMBER: ${{ github.event.issue.number }}
      - name: Setup Node.js
        uses: actions/setup-node@v3
        with:
          node-version-file: '.nvmrc'
          cache: 'yarn'
      - name: Install dependencies from cache
        run: yarn --immutable --immutable-cache
      - name: Deduplicate yarn.lock
        run: yarn dedupe
      - name: Cache yarn.lock
        uses: actions/cache/save@v3
        with:
          path: yarn.lock
          key: cache-yarn-lock-${{ needs.prepare.outputs.COMMIT_SHA }}

  regenerate-lavamoat-policies:
    name: Regenerate LavaMoat policies
    runs-on: ubuntu-latest
    needs: prepare
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3
      - name: Checkout pull request
        run: gh pr checkout "${PR_NUMBER}"
        env:
          GITHUB_TOKEN: ${{ secrets.PULL_REQUEST_UPDATE_TOKEN }}
          PR_NUMBER: ${{ github.event.issue.number }}
      - name: Setup Node.js
        uses: actions/setup-node@v3
        with:
          node-version-file: '.nvmrc'
          cache: 'yarn'
      - name: Install dependencies from cache
        run: yarn --immutable --immutable-cache
      - name: Regenerate LavaMoat policies
        run: yarn build:lavamoat:policy
      - name: Cache LavaMoat policies
        uses: actions/cache/save@v3
        with:
          path: packages/snaps-execution-environments/lavamoat
          key: cache-lavamoat-${{ needs.prepare.outputs.COMMIT_SHA }}

  update-examples:
    name: Update examples
    runs-on: ubuntu-latest
    needs: prepare
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3
      - name: Checkout pull request
        run: gh pr checkout "${PR_NUMBER}"
        env:
          GITHUB_TOKEN: ${{ secrets.PULL_REQUEST_UPDATE_TOKEN }}
          PR_NUMBER: ${{ github.event.issue.number }}
      - name: Setup Node.js
        uses: actions/setup-node@v3
        with:
          node-version-file: '.nvmrc'
          cache: 'yarn'
      - name: Install dependencies from cache
        run: yarn --immutable --immutable-cache
      - name: Update examples
        run: yarn build
      - name: Cache examples
        uses: actions/cache/save@v3
        with:
          path: packages/examples/packages
          key: cache-examples-${{ needs.prepare.outputs.COMMIT_SHA }}

  commit-result:
    name: Commit result
    runs-on: ubuntu-latest
    needs:
      - prepare
      - dedupe-yarn-lock
      - regenerate-lavamoat-policies
      - update-examples
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3
        with:
          # Use PAT to ensure that the commit later can trigger status check
          # workflows.
          token: ${{ secrets.PULL_REQUEST_UPDATE_TOKEN }}
      - name: Checkout pull request
        run: gh pr checkout "${PR_NUMBER}"
        env:
          GITHUB_TOKEN: ${{ secrets.PULL_REQUEST_UPDATE_TOKEN }}
          PR_NUMBER: ${{ github.event.issue.number }}
      - name: Configure Git
        run: |
          git config --global user.name 'MetaMask Bot'
          git config --global user.email 'metamaskbot@users.noreply.github.com'
      - name: Get commit SHA
        id: commit-sha
        run: echo "COMMIT_SHA=$(git rev-parse --short HEAD)" >> "$GITHUB_OUTPUT"
      - name: Restore yarn.lock
        uses: actions/cache/restore@v3
        with:
          path: yarn.lock
          key: cache-yarn-lock-${{ needs.prepare.outputs.COMMIT_SHA }}
          fail-on-cache-miss: true
      - name: Commit yarn.lock
        run: |
          git add yarn.lock
          git commit -m "Deduplicate yarn.lock" || true
      - name: Restore LavaMoat policies
        uses: actions/cache/restore@v3
        with:
          path: packages/snaps-execution-environments/lavamoat
          key: cache-lavamoat-${{ needs.prepare.outputs.COMMIT_SHA }}
          fail-on-cache-miss: true
      - name: Commit LavaMoat policies
        run: |
          git add packages/snaps-execution-environments/lavamoat
          git commit -m "Update LavaMoat policies" || true
      - name: Restore examples
        uses: actions/cache/restore@v3
        with:
          path: packages/examples/packages
          key: cache-examples-${{ needs.prepare.outputs.COMMIT_SHA }}
          fail-on-cache-miss: true
      - name: Commit examples
        run: |
          git add packages/examples/packages
          git commit -m "Update example snaps" || true
      - name: Push changes
        run: git push