name: Query help preview

permissions:
  contents: read

on:
  pull_request:
    branches:
      - main
      - "rc/*"
    paths:
      - "ruby/**/*.qhelp"

jobs:
  qhelp:
    runs-on: ubuntu-latest
    steps:
      - run: echo "${{  github.event.number }}" > pr.txt
      - uses: actions/upload-artifact@v2
        with:
          name: comment
          path: pr.txt
          retention-days: 1
      - uses: actions/checkout@v2
        with:
          fetch-depth: 2
          persist-credentials: false
      - uses: ./.github/actions/fetch-codeql
      - name: Determine changed files
        id: changes
        run: |
          (git diff -z --name-only --diff-filter=ACMRT HEAD~1 HEAD | grep -z '.qhelp$' | grep -z -v '.inc.qhelp';
           git diff -z --name-only --diff-filter=ACMRT HEAD~1 HEAD | grep -z '.inc.qhelp$' | xargs --null -rn1 basename | xargs --null -rn1 git grep -z -l) |
           grep -z '.qhelp$' | grep -z -v '^-' | sort -z -u > "${RUNNER_TEMP}/paths.txt"

      - name: QHelp preview
        run: |
          EXIT_CODE=0
          echo "QHelp previews:" > comment.txt
          while read -r -d $'\0' path; do
            if [ ! -f "${path}" ]; then
               exit 1
            fi
            echo "<details> <summary>${path}</summary>"
            echo
            codeql generate query-help --format=markdown -- "./${path}" 2> errors.txt || EXIT_CODE="$?"
            if [ -s errors.txt ]; then
               echo "# errors/warnings:"
               echo '```'
               cat errors.txt
               cat errors.txt 1>&2
               echo '```'
            fi
            echo "</details>"
          done < "${RUNNER_TEMP}/paths.txt" >> comment.txt
          exit "${EXIT_CODE}"

      - if: always()
        uses: actions/upload-artifact@v2
        with:
          name: comment
          path: comment.txt
          retention-days: 1