triage-app-json.yml

name: Check for app.json changes

# **What it does**: If someone changes app.json, we fail the check.
# **Why we have it**: app.json should rarely be edited, so we'll require an admin merge if the file really needs to be changed.
# **Who does it impact**: Docs engineering and content writers.

on:
  pull_request:

jobs:
  check-app-json-changes:
    if: github.repository == 'github/docs-internal' && github.event.pull_request.user.login != 'Octomerger'
    runs-on: ubuntu-latest
    steps:
      - name: Get files changed
        uses: dorny/paths-filter@eb75a1edc117d3756a18ef89958ee59f9500ba58
        id: filter
        with:
          # Base branch used to get changed files
          base: ${{ github.event.pull_request.base.ref }}

          # Enables setting an output in the format in `${FILTER_NAME}_files
          # with the names of the matching files formatted as JSON array
          list-files: json

          # Returns list of changed files matching each filter
          filters: |
            notAllowed:
              - 'app.json'

      - name: Fail if app.json was changed
        if: ${{ steps.filter.outputs.notAllowed == 'true' }}
        run: |
          echo "Please admin merge if you really need to update app.json!"
          exit 1