name: Cross-library benchmark

# Audit finding R10: previously the cross-library benchmark ran on every push
# and every pull-request to `main`, adding 5–10 minutes of build + bench time
# per CI run with no consumer of the resulting artefact. The benchmark is now
# scheduled (nightly at 03:00 UTC) and on-demand via `workflow_dispatch`. The
# CI pipeline proper (.github/workflows/ci.yml) still verifies build / tests /
# lints on every push and pull-request.
on:
  schedule:
    # Nightly at 03:00 UTC. Pick a slot well away from common European /
    # American working-hours pushes to keep this off the critical path.
    - cron: "0 3 * * *"
  workflow_dispatch:
    inputs:
      size:
        description: "Number of bars per indicator (default 20000)"
        required: false
        default: "20000"
      iterations:
        description: "Batch iterations per indicator (default 10)"
        required: false
        default: "10"

env:
  CARGO_TERM_COLOR: always

jobs:
  cross-library-bench:
    name: Cross-library benchmark report
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2

      - uses: dtolnay/rust-toolchain@29eef336d9b2848a0b548edc03f92a220660cdb8 # stable branch, 2026-03-27

      - uses: Swatinem/rust-cache@e18b497796c12c097a38f9edb9d0641fb99eee32 # v2

      - name: Set up Python
        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
        with:
          python-version: "3.11"

      - name: Install Python deps + peer libs
        run: |
          python -m pip install --upgrade pip
          python -m pip install maturin numpy pandas talipp finta

      - name: Build Wickra wheel
        working-directory: bindings/python
        run: maturin build --release --out dist

      - name: Install Wickra wheel
        working-directory: bindings/python
        run: python -m pip install --find-links dist --force-reinstall wickra

      - name: Run cross-library benchmark
        working-directory: bindings/python
        run: |
          python -m benchmarks.compare_libraries \
            --size ${{ github.event.inputs.size || '20000' }} \
            --iterations ${{ github.event.inputs.iterations || '10' }} \
            --streaming-window 5000 --streaming-iterations 2 \
            | tee benchmark.txt

      - name: Upload report
        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
        with:
          name: cross-library-bench
          path: bindings/python/benchmark.txt