name: profiler-hub Coverage
run-name: profiler-hub-coverage

on:
  workflow_dispatch:
  push:
    branches:
      - develop
    paths:
      - '.github/workflows/profiler-hub-coverage.yml'
      - 'profilers/profiler-hub/**'
      - '!profilers/profiler-hub/build/**'
      - '!profilers/profiler-hub/docs/**'
      - '!profilers/profiler-hub/README.md'
  pull_request:
    paths:
      - '.github/workflows/profiler-hub-coverage.yml'
      - 'profilers/profiler-hub/**'
      - '!profilers/profiler-hub/build/**'
      - '!profilers/profiler-hub/docs/**'
      - '!profilers/profiler-hub/README.md'

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

permissions:
  contents: read

jobs:
  coverage:
    name: coverage
    runs-on: ubuntu-24.04
    timeout-minutes: 30
    env:
      CC: gcc
      CXX: g++

    steps:
      - uses: actions/checkout@v6
        with:
          sparse-checkout: |
            profilers/profiler-hub
            .github/workflows

      - name: Install dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y \
            cmake \
            gcc g++ \
            lcov gcovr \
            libsqlite3-dev libspdlog-dev libfmt-dev nlohmann-json3-dev \
            libgtest-dev libgmock-dev libbenchmark-dev

      - name: Configure
        working-directory: profilers/profiler-hub
        run: |
          cmake --version
          gcovr --version | head -1
          cmake -S . -B build \
            -DCMAKE_BUILD_TYPE=Debug \
            -DPROFILER_HUB_ENABLE_COVERAGE=ON \
            -DPROFILER_HUB_BUILD_TESTS=ON \
            -DPROFILER_HUB_BUILD_BENCHMARKS=OFF

      - name: Build
        working-directory: profilers/profiler-hub
        run: cmake --build build --parallel $(nproc)

      - name: Generate Cobertura coverage report
        working-directory: profilers/profiler-hub
        run: |
          set -o pipefail
          cmake --build build --target coverage-xml 2>&1 | tee coverage.log
          test -f build/coverage/coverage.xml

      - name: Summarize coverage
        working-directory: profilers/profiler-hub
        run: |
          LINES=$(grep -oE 'lines: [0-9.]+%' coverage.log | tail -1 || echo "lines: n/a")
          FUNCS=$(grep -oE 'functions: [0-9.]+%' coverage.log | tail -1 || echo "functions: n/a")
          BRANCHES=$(grep -oE 'branches: [0-9.]+%' coverage.log | tail -1 || echo "branches: n/a")
          {
            echo "## Coverage summary"
            echo ""
            echo "| Metric | Value |"
            echo "|--------|-------|"
            echo "| ${LINES%:*} | ${LINES#*: } |"
            echo "| ${FUNCS%:*} | ${FUNCS#*: } |"
            echo "| ${BRANCHES%:*} | ${BRANCHES#*: } |"
          } >> "${GITHUB_STEP_SUMMARY}"
          echo "${LINES} | ${FUNCS} | ${BRANCHES}"

      - name: Enforce line coverage threshold
        working-directory: profilers/profiler-hub
        env:
          COVERAGE_LINES_THRESHOLD: '80'
        run: |
          set -euo pipefail
          LINES_PCT=$(grep -oE 'lines: [0-9.]+%' coverage.log \
                        | tail -1 \
                        | grep -oE '[0-9.]+')
          if [ -z "${LINES_PCT}" ]; then
            echo "ERROR: could not parse line coverage from coverage.log" >&2
            exit 1
          fi
          echo "Line coverage: ${LINES_PCT}% (threshold: ${COVERAGE_LINES_THRESHOLD}%)"
          awk -v cov="${LINES_PCT}" -v thr="${COVERAGE_LINES_THRESHOLD}" \
            'BEGIN { exit (cov + 0 >= thr + 0) ? 0 : 1 }' \
            || { echo "FAIL: line coverage ${LINES_PCT}% below threshold ${COVERAGE_LINES_THRESHOLD}%" >&2; exit 1; }

      - name: Upload coverage artifact
        if: always()
        uses: actions/upload-artifact@v7
        with:
          name: coverage-xml
          path: profilers/profiler-hub/build/coverage/coverage.xml
          if-no-files-found: warn