name: CI Coverage Overview

on:
  schedule:
    - cron: '0 6 * * *'  # Daily at 6 AM UTC
  workflow_dispatch:
    inputs:
      output_format:
        description: 'Output format'
        required: false
        default: 'markdown'
        type: choice
        options:
          - markdown
          - json

jobs:
  summary:
    name: Summary
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.10'

      - name: Generate Summary Report
        run: |
          python scripts/ci/utils/ci_coverage_report.py --section summary

  by-folder:
    name: Tests by Folder
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.10'

      - name: Generate Tests by Folder Report
        run: |
          python scripts/ci/utils/ci_coverage_report.py --section by-folder

  by-suite:
    name: Tests by Suite
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.10'

      - name: Generate Tests by Suite Report
        run: |
          python scripts/ci/utils/ci_coverage_report.py --section by-suite

  unit-test-coverage:
    name: Unit Test Code Coverage
    runs-on: 1-gpu-h100
    timeout-minutes: 30
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Install Rust toolchain + protoc
        # Editable install of sglang triggers `build_rust` for the bundled
        # native gRPC extension (rust/sglang-grpc). The 1-gpu-h100 runner
        # image has no Rust toolchain by default, which is why this job has
        # been failing on every scheduled run. Use the same helper that
        # ci_install_dependency.sh uses so the install path matches the
        # rest of CI.
        run: |
          bash scripts/ci/utils/install_rust_protoc.sh
          echo "${CARGO_HOME:-$HOME/.cargo}/bin" >> $GITHUB_PATH

      - name: Install dependencies
        timeout-minutes: 10
        run: |
          pip install -e "python/[test]"

      - name: Run unit tests with coverage
        timeout-minutes: 10
        run: |
          pytest test/registered/unit/ \
            --cov --cov-config=.coveragerc \
            --cov-report=term-missing:skip-covered \
            --continue-on-collection-errors \
            -v | tee coverage_output.txt

      - name: Write coverage to summary
        if: always()
        run: |
          echo "## Unit Test Code Coverage" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "**Commit:** \`${GITHUB_SHA::8}\` | **Branch:** \`${GITHUB_REF_NAME}\`" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY

          # Test result line (e.g., "== 42 passed, 1 failed in 23.5s ==")
          echo '```' >> $GITHUB_STEP_SUMMARY
          grep -E '^=+.*passed' coverage_output.txt >> $GITHUB_STEP_SUMMARY || true
          echo "" >> $GITHUB_STEP_SUMMARY
          # Coverage total, reformatted
          awk '/^TOTAL / { for(i=1;i<=NF;i++) if($i~/^[0-9]+$/ || $i~/^[0-9]+%$/) a[++n]=$i; if(n>=3) printf "TOTAL   Stmts: %s   Miss: %s   Cover: %s\n", a[1], a[2], a[3] }' coverage_output.txt >> $GITHUB_STEP_SUMMARY || true
          echo '```' >> $GITHUB_STEP_SUMMARY

          # Core modules with coverage < 50%, sorted by uncovered lines (descending)
          LOW_COV=$(awk '/^python\/.*%/ {
            for (i=1; i<=NF; i++) {
              if ($i ~ /^[0-9]+%$/) {
                pct = $i + 0
                if (pct >= 1 && pct < 50) {
                  stmts = $(i-2) + 0
                  miss = $(i-1) + 0
                  printf "%d|%s|%d|%d|%d%%\n", miss, $1, stmts, miss, pct
                }
                break
              }
            }
          }' coverage_output.txt \
            | grep -E '/(mem_cache|managers|sampling|parser|observability|function_call|entrypoints|speculative|multimodal|utils)/' \
            | sort -t'|' -k1 -nr | cut -d'|' -f2- | head -40 || true)
          if [ -n "$LOW_COV" ]; then
            echo "" >> $GITHUB_STEP_SUMMARY
            echo "<details><summary>Top uncovered core modules (coverage < 50%, sorted by uncovered lines)</summary>" >> $GITHUB_STEP_SUMMARY
            echo "" >> $GITHUB_STEP_SUMMARY
            echo "| File | Stmts | Miss | Cover |" >> $GITHUB_STEP_SUMMARY
            echo "|------|-------|------|-------|" >> $GITHUB_STEP_SUMMARY
            echo "$LOW_COV" | while IFS='|' read -r file stmts miss pct; do
              echo "| \`$file\` | $stmts | $miss | $pct |" >> $GITHUB_STEP_SUMMARY
            done
            echo "</details>" >> $GITHUB_STEP_SUMMARY
          fi

  json-export:
    name: JSON Export
    runs-on: ubuntu-latest
    if: inputs.output_format == 'json'
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.10'

      - name: Generate JSON Report
        run: |
          python scripts/ci/utils/ci_coverage_report.py --output-format json > ci_coverage.json

      - name: Upload JSON artifact
        uses: actions/upload-artifact@v4
        with:
          name: ci-coverage-report
          path: ci_coverage.json