name: ocelot.social check documentation

on:
  push:
    branches:
      - 6816-refactor-docsocelotsocial-ensure-vuepress-does-not-break

jobs:
  files-changed:
    name: Detect File Changes - Markdown files
    runs-on: ubuntu-latest
    outputs:
      markdown-files: ${{ steps.changes.outputs.markdown-files }}
    steps:
      - name: Checkout code
        uses: actions/checkout@master

      - name: Check for markdown file changes
        uses: dorny/paths-filter@v2.11.1
        id: changes
        with:
          token: ${{ github.token }}
          filters: .github/file-filters.yml
          list-files: shell

  check-summary:
    name: Check documentation summary
    if: needs.files-changed.outputs.markdown-files == 'true'
    needs: files-changed
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@master

      - name: Check, if all .md files listed in SUMMARY.dm exist in current branch
        run: |
          if [ ! -f "SUMMARY.md" ]; then
            echo "The file SUMMARY.md does not exist."
            exit 1
          fi

          md_files=$(grep -o -P '\[[^\]]+\]\(([^)]+\.md)\)' SUMMARY.md | sed -r 's/.*\(([^)]+)\)/\1/')
          missing_files=()

          for file in $md_files; do
            if [ ! -f "$file" ]; then
              missing_files+=("$file")
            fi
          done

          if [ ${#missing_files[@]} -eq 0 ]; then
            echo "All .md files listed in SUMMARY.dm exist."
          else
            echo "These files listed in SUMMARY.dm do not exist:"
            for missing_file in "${missing_files[@]}"; do
              echo "$missing_file"
            done
            exit 1
          fi

  check-markdown-links:
    name: Check Markdown links
    if: needs.files-changed.outputs.markdown-files == 'true'
    needs: files-changed
    runs-on: ubuntu-latest
    steps:
    - name: Checkout code
      uses: actions/checkout@master
    - name: Check Markdown Links
      uses: gaurav-nelson/github-action-markdown-link-check@master
      with:
        use-quiet-mode: 'yes'
        use-verbose-mode: 'no'
        # at any .md file change take the chance to check the links in all .md files
        check-modified-files-only: 'no'
        config-file: '.github/workflows/mlc_config.json'
        base-branch: 'trigger-docs.ocelot.social-deployment-by-markdown-file-changes-in-master-branch' # set to branch of current PR's branch
        folder-path: '.'