name: Benchmarks

on:
  workflow_dispatch:
    inputs:
      min_runs:
        description: "Minimum benchmark runs"
        required: false
        default: "30"
      quick:
        description: "Quick mode (fewer runs)"
        required: false
        default: "false"
        type: boolean

jobs:
  benchmark-linux:
    name: Benchmark (Linux)
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Set up Go
        uses: actions/setup-go@v5
        with:
          go-version-file: go.mod
          cache: true

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.12"

      - name: Set up Node
        uses: actions/setup-node@v4
        with:
          node-version: "20"

      - name: Download dependencies
        run: go mod download

      - name: Install dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y \
            bubblewrap \
            socat \
            uidmap \
            curl \
            netcat-openbsd \
            ripgrep \
            hyperfine \
            jq \
            bc
          # Configure subuid/subgid
          echo "$(whoami):100000:65536" | sudo tee -a /etc/subuid
          echo "$(whoami):100000:65536" | sudo tee -a /etc/subgid
          sudo chmod u+s $(which bwrap)

      - name: Install benchstat
        run: go install golang.org/x/perf/cmd/benchstat@latest

      - name: Build greywall
        run: make build-ci

      - name: Run Go microbenchmarks
        run: |
          mkdir -p benchmarks
          go test -run=^$ -bench=. -benchmem -count=10 ./internal/sandbox/... | tee benchmarks/go-bench-linux.txt

      - name: Run CLI benchmarks
        run: |
          MIN_RUNS="${{ github.event.inputs.min_runs || '30' }}"
          QUICK="${{ github.event.inputs.quick || 'false' }}"

          if [[ "$QUICK" == "true" ]]; then
            ./scripts/benchmark.sh -q -o benchmarks
          else
            ./scripts/benchmark.sh -n "$MIN_RUNS" -o benchmarks
          fi

      - name: Upload benchmark results
        uses: actions/upload-artifact@v4
        with:
          name: benchmark-results-linux
          path: benchmarks/
          retention-days: 30

      - name: Display results
        run: |
          echo "=== Linux Benchmark Results ==="
          echo ""

          for f in benchmarks/*.md; do
            [[ -f "$f" ]] && cat "$f"
          done

          echo ""
          echo "=== Go Microbenchmarks ==="
          grep -E '^Benchmark|^ok|^PASS' benchmarks/go-bench-linux.txt | head -50 || true