manage-prs.yml

name: Manage PRs

env:
  SUBMISSION_PARSER_VERSION: 1.1.1 # See: https://github.com/arduino/library-manager-submission-parser/releases
  MAINTAINERS: |
    # GitHub user names to request reviews from in cases where PRs can't be managed automatically.
    - per1234
  CHECK_SUBMISSIONS_FAIL_FLAG_ARTIFACT: check-submissions-failed
  ERROR_MESSAGE_PREFIX: ":x: **ERROR:** "

on:
  # pull_request_target trigger is used instead of pull_request so the token will have the write permissions needed to
  # comment and merge.
  # Note that this means the version of the workflow from the PR base ref will be used as opposed to the head ref, as is
  # the case with pull_request triggered workflows.
  # See: https://docs.github.com/actions/reference/events-that-trigger-workflows#pull_request_target
  pull_request_target:
    types:
      - opened
      - ready_for_review
      - synchronize
  issue_comment:
    types:
      - created
      - edited

concurrency:
  group: ${{ github.event.pull_request.number }}${{ github.event.issue.number }}
  cancel-in-progress: >-
    ${{
    (
    github.event_name == 'pull_request_target' &&
    github.event.pull_request.draft == false
    ) ||
    (
    github.event_name == 'issue_comment' &&
    github.event.issue.pull_request != '' &&
    github.event.issue.state == 'open' &&
    contains(github.event.comment.body, 'ArduinoBot')
    )
    }}

jobs:
  diff:
    if: >
      (
        github.event_name == 'pull_request_target' &&
        github.event.pull_request.draft == false
      ) ||
      (
        github.event_name == 'issue_comment' &&
        github.event.issue.pull_request != '' &&
        github.event.issue.state == 'open' &&
        contains(github.event.comment.body, 'ArduinoBot')
      )
    runs-on: ubuntu-latest
    outputs:
      artifact: ${{ steps.configuration.outputs.artifact }}
      path: ${{ steps.configuration.outputs.path }}
      filename: ${{ steps.configuration.outputs.filename }}
      head: ${{ steps.head.outputs.head }}

    env:
      # See: https://docs.github.com/rest/reference/pulls#custom-media-types-for-pull-requests
      DIFF_IDENTIFIER: diff
      JSON_IDENTIFIER: raw+json

    steps:
      - name: Set configuration outputs
        id: configuration
        run: |
          echo "::set-output name=artifact::diff"
          echo "::set-output name=path::${{ runner.temp }}"
          echo "::set-output name=filename::${{ env.DIFF_IDENTIFIER }}"

      - name: Comment on comment trigger to provide feedback
        if: github.event_name == 'issue_comment'
        uses: octokit/request-action@v2.x
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          # NOTE: "Unexpected input(s) ..." warnings for the arbitrary octokit/request-action inputs are normal and
          # expected.
          route: POST /repos/{owner}/{repo}/issues/{issue_number}/comments
          owner: ${{ github.repository_owner }}
          repo: ${{ github.event.repository.name }}
          issue_number: ${{ github.event.issue.number }}
          body: |
            |
            Hello! I'm checking your submission again.

      - name: Get PR data
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          # Two API requests are necessary, one for the PR diff and another for the metadata.
          # It's necessary to reference both pull_request.number and issue.number because only one of the two are
          # defined depending on whether the workflow is triggered by PR or comment event.
          parallel \
            ' \
              curl \
                --fail \
                --output "${{ steps.configuration.outputs.path }}/{}" \
                --header "Authorization: token $GITHUB_TOKEN" \
                --header "Accept: application/vnd.github.v3.{}" \
                https://api.github.com/repos/${{ github.repository_owner }}/${{ github.event.repository.name }}/pulls/${{ github.event.pull_request.number }}${{ github.event.issue.number }}
            ' \
            ::: \
              ${{ env.DIFF_IDENTIFIER }} \
              ${{ env.JSON_IDENTIFIER }}

      - name: Get head SHA of diff
        id: head
        run: echo "::set-output name=head::$(jq -c .head.sha "${{ steps.configuration.outputs.path }}/${{ env.JSON_IDENTIFIER }}")"

      - name: Upload diff file to workflow artifact
        uses: actions/upload-artifact@v3
        with:
          path: ${{ steps.configuration.outputs.path }}/${{ steps.configuration.outputs.filename }}
          name: ${{ steps.configuration.outputs.artifact }}

  parse:
    needs:
      - diff
    runs-on: ubuntu-latest

    outputs:
      type: ${{ steps.parse-request.outputs.type }}
      error: ${{ steps.parse-request.outputs.error }}
      arduinoLintLibraryManagerSetting: ${{ steps.parse-request.outputs.arduinoLintLibraryManagerSetting }}
      submissions: ${{ steps.parse-request.outputs.submissions }}
      index-entry: ${{ steps.parse-request.outputs.index-entry }}
      indexer-logs-urls: ${{ steps.parse-request.outputs.indexer-logs-urls }}

    steps:
      - name: Checkout local repository
        uses: actions/checkout@v4

      - name: Download submission parser
        id: download-parser
        uses: carlosperate/download-file-action@v2
        with:
          file-url: https://github.com/arduino/library-registry-submission-parser/releases/download/${{ env.SUBMISSION_PARSER_VERSION }}/parser
          location: ${{ runner.temp }}

      - name: Download diff
        uses: actions/download-artifact@v3
        with:
          path: ${{ needs.diff.outputs.path }}
          name: ${{ needs.diff.outputs.artifact }}

      - name: Remove no longer needed artifact
        uses: geekyeggo/delete-artifact@v2
        with:
          name: ${{ needs.diff.outputs.artifact }}

      - name: Parse request
        id: parse-request
        run: |
          chmod u+x "${{ steps.download-parser.outputs.file-path }}"
          REQUEST="$( \
            "${{ steps.download-parser.outputs.file-path }}" \
              --diffpath="${{ needs.diff.outputs.path }}/${{ needs.diff.outputs.filename }}" \
              --repopath="${{ github.workspace }}" \
              --listname="repositories.txt" \
          )"
          # Due to limitations of the GitHub Actions workflow system, dedicated outputs must be created for use in
          # certain workflow fields.
          echo "::set-output name=type::$(echo "$REQUEST" | jq -r -c '.type')"
          echo "::set-output name=error::$(echo "$REQUEST" | jq -r -c '.error')"
          echo "::set-output name=arduinoLintLibraryManagerSetting::$(echo "$REQUEST" | jq -r -c '.arduinoLintLibraryManagerSetting')"
          echo "::set-output name=submissions::$(echo "$REQUEST" | jq -c '.submissions')"
          echo "::set-output name=index-entry::$(echo "$REQUEST" | jq -r -c '.indexEntry')"
          echo "::set-output name=indexer-logs-urls::$(echo "$REQUEST" | jq -r -c '.indexerLogsURLs')"

  label:
    needs:
      - parse
    runs-on: ubuntu-latest

    steps:
      - name: Label PR
        uses: octokit/request-action@v2.x
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          route: PUT /repos/{owner}/{repo}/issues/{issue_number}/labels
          owner: ${{ github.repository_owner }}
          repo: ${{ github.event.repository.name }}
          issue_number: ${{ github.event.pull_request.number }}${{ github.event.issue.number }}
          labels: |
            - "topic: ${{ needs.parse.outputs.type }}"

  parse-fail:
    needs:
      - parse
    if: needs.parse.outputs.error != ''

    runs-on: ubuntu-latest
    steps:
      - name: Comment on error detected while parsing PR
        uses: octokit/request-action@v2.x
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          route: POST /repos/{owner}/{repo}/issues/{issue_number}/comments
          owner: ${{ github.repository_owner }}
          repo: ${{ github.event.repository.name }}
          issue_number: ${{ github.event.pull_request.number }}${{ github.event.issue.number }}
          body: |
            |
            Hi @${{ github.actor }}
            A problem was found with your pull request:

            ${{ env.ERROR_MESSAGE_PREFIX }}${{ needs.parse.outputs.error }}

            Please resolve this error. The checks will automatically run again once that is done.

            More information:
            https://github.com/${{ github.repository }}/blob/main/README.md#if-the-problem-is-with-the-pull-request

  check-submissions:
    name: Check ${{ matrix.submission.submissionURL }}
    needs:
      - parse
    if: >
      needs.parse.outputs.type == 'submission' ||
      needs.parse.outputs.type == 'modification'
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false

      # A matrix job will run for each of the submission URLs
      matrix:
        submission: ${{ fromJson(needs.parse.outputs.submissions) }}

    steps:
      - name: Set environment variables
        run: |
          echo "JSON_REPORT_PATH=${{ runner.temp }}/report.json" >> "$GITHUB_ENV"
          echo "TEXT_REPORT_PATH=${{ runner.temp }}/report.txt" >> "$GITHUB_ENV"
          echo "ARDUINO_LINT_INSTALLATION_PATH=${{ runner.temp }}/arduino-lint" >> "$GITHUB_ENV"
          echo "PASS=true" >> "$GITHUB_ENV" # This variable stores the checks result
          echo "FAIL_FLAG_PATH=${{ runner.temp }}/.check-submissions-failed" >> "$GITHUB_ENV"

      # Submission PRs can be handled without maintainer involvement
      - name: Remove prior review requests
        uses: octokit/request-action@v2.x
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          route: DELETE /repos/{owner}/{repo}/pulls/{pull_number}/requested_reviewers
          owner: ${{ github.repository_owner }}
          repo: ${{ github.event.repository.name }}
          pull_number: ${{ github.event.pull_request.number }}${{ github.event.issue.number }}
          reviewers: ${{ env.MAINTAINERS }}

      - name: Comment on error detected while parsing submission
        if: matrix.submission.error != ''
        uses: octokit/request-action@v2.x
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          route: POST /repos/{owner}/{repo}/issues/{issue_number}/comments
          owner: ${{ github.repository_owner }}
          repo: ${{ github.event.repository.name }}
          issue_number: ${{ github.event.pull_request.number }}${{ github.event.issue.number }}
          body: |
            |
            A problem was found with your submission ${{ matrix.submission.submissionURL }}

            ${{ env.ERROR_MESSAGE_PREFIX }}${{ matrix.submission.error }}

      - name: Set checks result to fail if error detected by submission parser
        if: matrix.submission.error != ''
        run: echo "PASS=false" >> "$GITHUB_ENV"

      - name: Install Arduino Lint
        if: env.PASS == 'true'
        run: |
          mkdir --parents "${{ env.ARDUINO_LINT_INSTALLATION_PATH }}"
          curl \
            -fsSL \
            https://raw.githubusercontent.com/arduino/arduino-lint/main/etc/install.sh \
          | \
          BINDIR="${{ env.ARDUINO_LINT_INSTALLATION_PATH }}" \
          sh

      # actions/checkout can't be used because it only supports GitHub repos, while libraries may use other Git hosts
      - name: Clone submission
        if: env.PASS == 'true'
        run: |
          git clone \
            --branch ${{ matrix.submission.tag }} \
            --depth 1 ${{ matrix.submission.normalizedURL }} \
            "${{ matrix.submission.repositoryName }}"

      - name: Lint submission
        id: arduino-lint
        if: env.PASS == 'true'
        continue-on-error: true # Error on linter rule violations is expected
        run: |
          export ARDUINO_LINT_OFFICIAL="${{ matrix.submission.official }}"

          "${{ env.ARDUINO_LINT_INSTALLATION_PATH }}/arduino-lint" \
            --compliance=permissive \
            --format=text \
            --library-manager=${{ needs.parse.outputs.arduinoLintLibraryManagerSetting }} \
            --project-type=library \
            --recursive=false \
            --report-file="${{ env.JSON_REPORT_PATH }}" \
            "${{ matrix.submission.repositoryName }}" > \
              "${{ env.TEXT_REPORT_PATH }}"

      - name: Read Arduino Lint reports
        id: read-lint-report
        if: env.PASS == 'true'
        run: |
          echo "::set-output name=json-report::$(jq -c . "${{ env.JSON_REPORT_PATH }}")"

          # In order to use the text format report as a step output, it's necessary to do some character replacements.
          TEXT_REPORT=$(cat "${{ env.TEXT_REPORT_PATH }}")
          TEXT_REPORT="${TEXT_REPORT//'%'/'%25'}"
          TEXT_REPORT="${TEXT_REPORT//$'\n'/'%0A'}"
          TEXT_REPORT="${TEXT_REPORT//$'\r'/'%0D'}"
          echo "::set-output name=text-report::$TEXT_REPORT"

      - name: Comment on Arduino Lint warning
        if: >
          env.PASS == 'true'
          && fromJson(steps.read-lint-report.outputs.json-report).summary.warningCount > 0
          && fromJson(steps.read-lint-report.outputs.json-report).summary.errorCount == 0
        uses: octokit/request-action@v2.x
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          route: POST /repos/{owner}/{repo}/issues/{issue_number}/comments
          owner: ${{ github.repository_owner }}
          repo: ${{ github.event.repository.name }}
          issue_number: ${{ github.event.pull_request.number }}${{ github.event.issue.number }}
          body: |
            |
            [Arduino Lint](https://github.com/arduino/arduino-lint) has suggestions for possible improvements to ${{ matrix.submission.submissionURL }}:

            ```
            ${{ steps.read-lint-report.outputs.text-report }}
            ```

      - name: Comment on Arduino Lint error
        if: >
          env.PASS == 'true'
          && fromJson(steps.read-lint-report.outputs.json-report).summary.errorCount > 0
        uses: octokit/request-action@v2.x
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          route: POST /repos/{owner}/{repo}/issues/{issue_number}/comments
          owner: ${{ github.repository_owner }}
          repo: ${{ github.event.repository.name }}
          issue_number: ${{ github.event.pull_request.number }}${{ github.event.issue.number }}
          body: |
            |
            ${{ env.ERROR_MESSAGE_PREFIX }}[Arduino Lint](https://github.com/arduino/arduino-lint) found errors with ${{ matrix.submission.submissionURL }}:

            ```
            ${{ steps.read-lint-report.outputs.text-report }}
            ```

      - name: Set checks result to fail if error detected by Arduino Lint
        if: >
          env.PASS == 'true'
          && steps.arduino-lint.outcome == 'failure'
        run: echo "PASS=false" >> "$GITHUB_ENV"

      - name: Create failure flag file
        if: env.PASS == 'false'
        run: touch ${{ env.FAIL_FLAG_PATH }} # Arbitrary file to provide content for the flag artifact

      # The value of a job matrix output is set by whichever job happened to run last, not of use for this application.
      # So it's necessary to use an alternative means of indicating that at least one submission failed the checks.
      - name: Upload failure flag artifact
        if: env.PASS == 'false'
        uses: actions/upload-artifact@v3
        with:
          if-no-files-found: error
          include-hidden-files: true
          path: ${{ env.FAIL_FLAG_PATH }}
          name: ${{ env.CHECK_SUBMISSIONS_FAIL_FLAG_ARTIFACT }}

  check-submissions-result:
    needs: check-submissions
    runs-on: ubuntu-latest

    outputs:
      pass: ${{ steps.failure-flag-exists.outcome == 'failure' }}

    steps:
      - name: Check for existence of submission check failure flag artifact
        id: failure-flag-exists
        uses: actions/download-artifact@v3
        continue-on-error: true
        with:
          name: ${{ env.CHECK_SUBMISSIONS_FAIL_FLAG_ARTIFACT }}

  check-submissions-fail:
    needs:
      - check-submissions-result
    if: needs.check-submissions-result.outputs.pass == 'false'
    runs-on: ubuntu-latest

    steps:
      - name: Comment instructions to fix errors detected during submission checks
        uses: octokit/request-action@v2.x
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          route: POST /repos/{owner}/{repo}/issues/{issue_number}/comments
          owner: ${{ github.repository_owner }}
          repo: ${{ github.event.repository.name }}
          issue_number: ${{ github.event.pull_request.number }}${{ github.event.issue.number }}
          body: |
            |
            Thanks for your interest in contributing to the Arduino Library Manager index @${{ github.actor }}
            Please resolve the error(s) mentioned in the previous comment.

            After resolving the issue, trigger this check again by doing one of the following:

            - **Commit the required change to the branch you submitted this pull request from.**
            - **Comment here, mentioning `@ArduinoBot` in the comment.**

            :exclamation: **NOTE**: It is not necessary to open a new pull request. :exclamation:

            More information:
            https://github.com/${{ github.repository }}/blob/main/README.md#if-the-problem-is-with-the-pull-request

  merge:
    needs:
      - diff
      - parse
      - check-submissions-result
    # Only merge submissions that passed all checks
    if: >
      needs.parse.outputs.type == 'submission'
      && needs.check-submissions-result.outputs.pass == 'true'
    runs-on: ubuntu-latest
    outputs:
      pass: ${{ steps.merge.outcome == 'success' }}
      status: ${{ steps.merge.outputs.status }}

    steps:
      - name: Approve pull request
        uses: octokit/request-action@v2.x
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          route: POST /repos/{owner}/{repo}/pulls/{pull_number}/reviews
          owner: ${{ github.repository_owner }}
          repo: ${{ github.event.repository.name }}
          pull_number: ${{ github.event.pull_request.number }}${{ github.event.issue.number }}
          event: APPROVE

      - name: Merge pull request
        id: merge
        continue-on-error: true # Error in some situations (e.g., merge conflict) is expected
        uses: octokit/request-action@v2.x
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          route: PUT /repos/{owner}/{repo}/pulls/{pull_number}/merge
          owner: ${{ github.repository_owner }}
          repo: ${{ github.event.repository.name }}
          pull_number: ${{ github.event.pull_request.number }}${{ github.event.issue.number }}
          sha: ${{ needs.diff.outputs.head }}
          merge_method: squash

      - name: Checkout index source branch
        if: steps.merge.outcome == 'success'
        uses: actions/checkout@v4
        with:
          ref: production

      - name: Add index source file entry for submissions
        if: steps.merge.outcome == 'success'
        run: |
          INDEX_SOURCE_FILE_PATH="${{ github.workspace }}/registry.txt"
          git config --global user.email "bot@arduino.cc"
          git config --global user.name "ArduinoBot"
          echo "${{ needs.parse.outputs.index-entry }}" >> "$INDEX_SOURCE_FILE_PATH"
          git add --update "$INDEX_SOURCE_FILE_PATH"
          echo \
            -e \
            "Add submission # ${{ github.event.pull_request.number }}${{ github.event.issue.number }}\n\n${{ github.event.repository.html_url }}/pull/${{ github.event.pull_request.number }}${{ github.event.issue.number }}" \
            | \
              git commit \
                --file -
          git push

      - name: Comment that submission was accepted
        if: steps.merge.outcome == 'success'
        uses: octokit/request-action@v2.x
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          route: POST /repos/{owner}/{repo}/issues/{issue_number}/comments
          owner: ${{ github.repository_owner }}
          repo: ${{ github.event.repository.name }}
          issue_number: ${{ github.event.pull_request.number }}${{ github.event.issue.number }}
          body: |
            |
            Your submission has now been accepted! Thanks for your contribution to the Arduino Library Manager index.

            The library(s) will be available for installation via Library Manager within a day's time.

            You can check the logs from the Library Manager indexer for your library(s) here:
            ${{ needs.parse.outputs.indexer-logs-urls }}

  merge-fail:
    needs:
      - merge
    # Only run if the PR could not be merged
    if: needs.merge.outputs.pass == 'false'
    runs-on: ubuntu-latest
    steps:
      - name: Comment on merge fail due to out of sync PR head branch causing downgraded token
        if: needs.merge.outputs.status == '403'
        uses: octokit/request-action@v2.x
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          route: POST /repos/{owner}/{repo}/issues/{issue_number}/comments
          owner: ${{ github.repository_owner }}
          repo: ${{ github.event.repository.name }}
          issue_number: ${{ github.event.pull_request.number }}${{ github.event.issue.number }}
          body: |
            |
            ${{ env.ERROR_MESSAGE_PREFIX }}Your submission meets all requirements. However, the pull request could not be merged.

            Please follow this guide to sync your fork:
            https://docs.github.com/github/collaborating-with-pull-requests/working-with-forks/syncing-a-fork

            Once that is done, it will be merged automatically.

      - name: Comment on merge conflict
        if: needs.merge.outputs.status == '405'
        uses: octokit/request-action@v2.x
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          route: POST /repos/{owner}/{repo}/issues/{issue_number}/comments
          owner: ${{ github.repository_owner }}
          repo: ${{ github.event.repository.name }}
          issue_number: ${{ github.event.pull_request.number }}${{ github.event.issue.number }}
          body: |
            |
            ${{ env.ERROR_MESSAGE_PREFIX }}Your submission meets all requirements. However, the pull request could not be merged.

            Please follow this guide to resolve a merge conflict:
            https://docs.github.com/github/collaborating-with-issues-and-pull-requests/resolving-a-merge-conflict-on-github

            Once that is done, it will be merged automatically.

      - name: Comment on diff head/PR head mismatch
        if: needs.merge.outputs.status == '409'
        uses: octokit/request-action@v2.x
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          route: POST /repos/{owner}/{repo}/issues/{issue_number}/comments
          owner: ${{ github.repository_owner }}
          repo: ${{ github.event.repository.name }}
          issue_number: ${{ github.event.pull_request.number }}${{ github.event.issue.number }}
          body: |
            |
            It looks like there may have been an update to the pull request. If so, I'll check it again now.

      - name: Fail on unidentified merge failure
        if: >
          needs.merge.outputs.status != '403' &&
          needs.merge.outputs.status != '405' &&
          needs.merge.outputs.status != '409'
        run: exit 1 # Trigger the `unexpected-fail` job

  not-submission:
    needs:
      - parse
    # These request types can't be automatically approved.
    if: >
      needs.parse.outputs.type != 'submission' &&
      needs.parse.outputs.type != 'invalid'
    runs-on: ubuntu-latest
    steps:
      - name: Comment on required review
        uses: octokit/request-action@v2.x
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          route: POST /repos/{owner}/{repo}/issues/{issue_number}/comments
          owner: ${{ github.repository_owner }}
          repo: ${{ github.event.repository.name }}
          issue_number: ${{ github.event.pull_request.number }}${{ github.event.issue.number }}
          body: |
            |
            Hi @${{ github.actor }}.
            Your pull request has been detected as something other than a Library Manager submission.
            A maintainer will need to review it before it can be merged.

            If you intended to submit a library, please check the instructions and update your pull request if necessary:
            https://github.com/${{ github.repository }}/blob/main/README.md#instructions

  unexpected-fail:
    needs:
      # Run after all other jobs
      - parse-fail
      - merge-fail
      - check-submissions-fail
      - label
      - not-submission
    # Run if any job failed. The workflow is configured so that jobs only fail when there is an unexpected error.
    if: failure()
    runs-on: ubuntu-latest

    steps:
      - name: Label PR to indicate need for maintenance
        uses: octokit/request-action@v2.x
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          route: PUT /repos/{owner}/{repo}/issues/{issue_number}/labels
          owner: ${{ github.repository_owner }}
          repo: ${{ github.event.repository.name }}
          issue_number: ${{ github.event.pull_request.number }}${{ github.event.issue.number }}
          labels: |
            - "status: maintenance required"

      - name: Comment on unexpected failure
        uses: octokit/request-action@v2.x
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          route: POST /repos/{owner}/{repo}/issues/{issue_number}/comments
          owner: ${{ github.repository_owner }}
          repo: ${{ github.event.repository.name }}
          issue_number: ${{ github.event.pull_request.number }}${{ github.event.issue.number }}
          body: |
            |
            Hi @${{ github.actor }}.
            There was an unexpected failure during automated processing of your pull request.
            This error is unrelated to the content of your pull request.

            A maintainer has been notified and will investigate as soon as possible.

      - name: Slack notification of unexpected failure
        uses: rtCamp/action-slack-notify@v2
        env:
          SLACK_WEBHOOK: ${{ secrets.TEAM_TOOLING_CHANNEL_SLACK_WEBHOOK }}
          SLACK_MESSAGE: |
            :warning::warning::warning::warning:
            WARNING: ${{ github.repository }} ${{ github.workflow }} workflow run had an unexpected failure!!!
            :warning::warning::warning::warning:
          SLACK_COLOR: danger
          MSG_MINIMAL: true

  request-review:
    needs:
      - parse-fail
      - merge-fail
      - not-submission
      - unexpected-fail
    if: >
      always() &&
      (
        needs.parse-fail.result != 'skipped' ||
        needs.merge-fail.result != 'skipped' ||
        needs.not-submission.result != 'skipped' ||
        needs.unexpected-fail.result != 'skipped'
      )
    runs-on: ubuntu-latest
    steps:
      - name: Request pull request review from maintainer
        if: contains(toJSON(env.MAINTAINERS), github.actor) != true # Don't attempt to request review from PR author.
        uses: octokit/request-action@v2.x
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          route: POST /repos/{owner}/{repo}/pulls/{pull_number}/requested_reviewers
          owner: ${{ github.repository_owner }}
          repo: ${{ github.event.repository.name }}
          pull_number: ${{ github.event.pull_request.number }}${{ github.event.issue.number }}
          reviewers: ${{ env.MAINTAINERS }}