name: Coverage (Ubuntu)

concurrency:
  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.run_id }}
  cancel-in-progress: true

# Coverage duplicates the Ubuntu suite to measure it rather than protect a
# distinct PR failure mode. Keep that cost scheduled and available on demand.
on:
  schedule:
    - cron: '42 9 * * 1'
  workflow_dispatch:

permissions:
  contents: read

jobs:
  coverage:
    runs-on: ubuntu-latest
    timeout-minutes: 45
    name: gcov coverage
    steps:
    - uses: actions/checkout@v4
      with:
        fetch-depth: 0
    - name: prep
      run: |
        sudo apt-get update
        sudo apt-get install -y acl libacl1-dev attr libattr1-dev liblz4-dev libzstd-dev libxxhash-dev python3-cmarkgfm openssl gcovr
        echo "/usr/local/bin" >>"$GITHUB_PATH"
    - name: configure
      run: ./configure --enable-coverage --with-rrsync
    - name: make
      run: make
    - name: info
      run: rsync --version
    # Two coverage runs: the default pipe transport, then a second pass over a
    # real loopback rsyncd (--use-tcp) which also exercises the require_tcp-only
    # tests. gcovr's --print-summary line/branch/decision totals go to the step
    # log (and the job summary below), so the numbers are visible in CI.
    # `make coverage` exits with the suite's status, so a regression fails CI.
    - name: coverage (pipe transport)
      run: |
        set -o pipefail
        sudo make coverage 2>&1 | tee cov-pipe.log
    - name: coverage (TCP transport)
      run: |
        set -o pipefail
        sudo make coverage-tcp 2>&1 | tee cov-tcp.log
    - name: coverage summary
      if: always()
      run: |
        {
          echo "## gcov coverage"
          echo "### Pipe transport (\`make coverage\`)"
          echo '```'
          grep -E '^(lines|functions|branches|decisions):' cov-pipe.log || echo '(no summary -- see step log)'
          echo '```'
          echo "### TCP transport (\`make coverage-tcp\`)"
          echo '```'
          grep -E '^(lines|functions|branches|decisions):' cov-tcp.log || echo '(no summary -- see step log)'
          echo '```'
        } >> "$GITHUB_STEP_SUMMARY"
    - name: upload HTML reports
      if: always()
      uses: actions/upload-artifact@v4
      with:
        retention-days: 45
        name: coverage-html
        path: |
          coverage
          coverage-tcp