name: bench

on:
  workflow_dispatch:
  schedule:
    # Weekly: Monday 06:00 UTC. Quiet hour for most regions; avoids the
    # workday CI rush so we don't queue behind other people's PRs.
    - cron: "0 6 * * 1"

permissions:
  contents: read

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

jobs:
  fixtures-smoke:
    # The default smoke target is the self-contained fold-fixtures corpus.
    # POJ-104 / SARD runs live in their own opt-in workflow once the
    # corpora/<name>/fetch.sh scripts are wired up.
    runs-on: ubuntu-latest
    timeout-minutes: 30
    steps:
      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4

      - name: Install system deps
        run: |
          sudo apt-get update
          sudo apt-get install -y \
            clang-19 clang-tidy-19 \
            llvm-19-dev libclang-19-dev libclang-cpp19-dev \
            libz3-dev libsqlite3-dev \
            meson ninja-build pkg-config \
            nlohmann-json3-dev \
            libcli11-dev libspdlog-dev libfmt-dev

      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5
        with:
          python-version: "3.12"

      - name: Install Conan
        run: |
          python -m pip install --upgrade pip
          python -m pip install "conan>=2,<3"
          conan profile detect --force

      - name: Cache Conan
        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
        with:
          path: ~/.conan2
          key: conan-bench-${{ hashFiles('conanfile.py') }}

      - name: Configure + build fold (release)
        env:
          CC: clang-19
          CXX: clang++-19
        run: |
          conan install . --output-folder=build/release --build=missing \
              -s build_type=Release -o build_tests=False
          ln -sf /usr/lib/x86_64-linux-gnu/pkgconfig/z3.pc build/release/z3.pc
          meson setup build/release \
              --native-file build/release/conan_meson_native.ini \
              -Dcpp_std=c++23 \
              -Dllvm-config-path="$(command -v llvm-config-19)"
          meson compile -C build/release

      - name: Run bench (fold-fixtures corpus)
        run: |
          mkdir -p bench/corpora
          ln -sfn ../../tests/fixtures/clones bench/corpora/fold-fixtures
          python3 bench/run_bench.py \
              --corpus bench/corpora/fold-fixtures \
              --name fold-fixtures \
              --tools fold,clang-tidy \
              --processes 1 \
              --detectors clone

      - name: Score against gold
        run: |
          LATEST="$(python3 -c 'from pathlib import Path; paths=sorted(p.name for p in Path("bench/results").iterdir() if p.is_dir()); print(paths[-1] if paths else "")')"
          test -n "$LATEST"
          python3 bench/score.py \
              --run-dir "bench/results/${LATEST}" \
              --gold bench/gold/fold-fixtures.json

      - name: SARIF determinism check
        run: |
          ./build/release/src/cli/fold scan \
              --compile-db tests/fixtures/compile_commands.json \
              --format sarif --detectors clone --min-body-stmts 1 \
              --processes 1 --output /tmp/run1.sarif
          ./build/release/src/cli/fold scan \
              --compile-db tests/fixtures/compile_commands.json \
              --format sarif --detectors clone --min-body-stmts 1 \
              --processes 1 --output /tmp/run2.sarif
          diff -u /tmp/run1.sarif /tmp/run2.sarif

      - name: Upload bench artifacts
        if: always()
        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
        with:
          name: bench-results
          path: bench/results/
          if-no-files-found: ignore