ci.yml

name: CI

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]
  workflow_dispatch:

# A new push to the same branch supersedes any run still in flight.
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  # Build the library + GoogleTest suite and run it
  # SWAMP_BUILD_TUI=OFF skips FTXUI and, more importantly, the ~5 MB genome
  # download NCBI serves at configure time — CI would otherwise fail whenever
  # that endpoint is slow or rate-limited. The tests use inline strings only.
  test:
    name: test (${{ matrix.os }}, ${{ matrix.build_type }})
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, macos-latest, windows-latest]
        build_type: [Debug, Release]

    steps:
      - uses: actions/checkout@v4

      - name: Cache FetchContent dependencies
        uses: actions/cache@v4
        with:
          path: build/_deps
          key: deps-${{ matrix.os }}-${{ hashFiles('CMakeLists.txt') }}

      - name: Configure
        run: >
          cmake -B build
          -DCMAKE_BUILD_TYPE=${{ matrix.build_type }}
          -DSWAMP_BUILD_TUI=OFF
          -DSWAMP_BUILD_TESTS=ON

      - name: Build
        run: cmake --build build --config ${{ matrix.build_type }} --parallel

      - name: Test
        run: ctest --test-dir build --build-config ${{ matrix.build_type }} --output-on-failure

  # The sanitizer run lives in its own workflow so it reports a separate badge:
  # see .github/workflows/sanitizers.yml
  #
  # Runs a deliberately small sweep so it stays inside a normal CI budget, and
  # publishes the CSV as an artifact so the performance tradeoff can be tracked
  # across commits rather than measured once and forgotten.
  benchmark:
    name: benchmark
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - name: Configure
        run: >
          cmake -B build
          -DCMAKE_BUILD_TYPE=Release
          -DSWAMP_BUILD_TUI=OFF
          -DSWAMP_BUILD_TESTS=OFF
          -DSWAMP_BUILD_BENCH=ON

      - name: Build
        run: cmake --build build --parallel

      - name: Run benchmark
        run: ./build/bin/SwampBench --max-size 200000 --steps 4 --queries 200 > bench_results.csv

      - name: Summarize
        run: |
          echo '### Suffix Array vs. Suffix Tree' >> "$GITHUB_STEP_SUMMARY"
          echo '' >> "$GITHUB_STEP_SUMMARY"
          echo '```' >> "$GITHUB_STEP_SUMMARY"
          cat bench_results.csv >> "$GITHUB_STEP_SUMMARY"
          echo '```' >> "$GITHUB_STEP_SUMMARY"

      - name: Upload results
        uses: actions/upload-artifact@v4
        with:
          name: bench-results
          path: bench_results.csv