name: Local development

# **What it does**: Can you start the local server like a writer would do?
# **Why we have it**: Our CI is often heavily geared on testing in "production"
#                     that historically we've been known to break local
#                     development sometimes.
# **Who does it impact**: Engineers, Contributors.

on:
  merge_group:
  pull_request:

permissions:
  contents: read

jobs:
  local-dev:
    if: github.repository == 'github/docs-internal' || github.repository == 'github/docs'
    runs-on: ${{ fromJSON('["ubuntu-latest", "ubuntu-20.04-xl"]')[github.repository == 'github/docs-internal'] }}
    steps:
      - name: Check out repo
        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1

      - uses: ./.github/actions/node-npm-setup

      - uses: ./.github/actions/get-docs-early-access
        if: ${{ github.repository == 'github/docs-internal' }}
        with:
          token: ${{ secrets.DOCS_BOT_PAT_BASE }}

      # Note that we don't check out docs-early-access, Elasticsearch,
      # or any remote translations. Nothing fancy here!

      - name: Disable Next.js telemetry
        run: npx next telemetry disable

      - name: Install headless browser
        run: npx playwright install --no-shell

      # The Playwright test, with the env vars we set here, takes care of
      # starting a server and shutting it down when it's done.
      # That's why it's important this step comes before the `npm start &`
      # step below.
      - name: Run Playwright tests
        env:
          # This is what local dev contributors are expected to do.
          PLAYWRIGHT_START_SERVER_COMMAND: 'npm start'
          # This is so that timeouts aren't retried, which can lead to
          # tests not exiting at the end with a non-zero. Otherwise,
          # by default failures are marked as "flaky" instead of "failed".
          PLAYWRIGHT_RETRIES: 0
          TEST_EARLY_ACCESS: ${{ github.repository == 'github/docs-internal' }}
        run: npm run playwright-test -- playwright-local-dev

      - name: Start server in the background
        run: npm start > /tmp/stdout.log 2> /tmp/stderr.log &

      - name: View the home page
        run: |
          echo "Going to sleep a little to wait for the server to start"
          sleep 10
          curl --fail --retry-connrefused --retry 5 http://localhost:4000/

      - name: Run basic tests
        run: npm run test-local-dev

      - if: ${{ failure() }}
        name: Debug server outputs on errors
        run: |
          echo "____STDOUT____"
          cat /tmp/stdout.log
          echo "____STDERR____"
          cat /tmp/stderr.log

      - name: Pre-commit hooks should prevent bad Markdown edits
        run: |
          set -e

          # This test assumes this one file always exists
          ls content/get-started/start-your-journey/hello-world.md

          # Not sure if it matters but we're in a detached HEAD state
          # after the actions/checkout action.
          git checkout -b my-new-branch
          # Also, do this so you don't get errors from git about this
          # not being set up before your first commit attempt
          git config user.name github-actions
          git config user.email github-actions@github.com

          # To know what will fail the markdown lint, see src/content-linter/style/github-docs.js
          # Add some NOT valid Markdown to it
          # In this case an internal link with a hardcode /en/ prefix.
          echo "This *is** not valid [Markdown](/en/foo)" >> content/get-started/start-your-journey/hello-world.md
          git commit -a -m "this should fail"
          exit_code=$?
          if [ $exit_code != 0 ]; then
            echo "That SHOULD have failed, but it DIDN'T"
            exit 1
          else
            echo "As expected, it failed :)"
          fi