validate.yml

name: Validate

on:
  pull_request:

env:
  CARGO_TERM_COLOR: always

jobs:
  validate:
    name: Validate Rust Tests & Swift Build
    runs-on: macos-14

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Setup Rust toolchain
        uses: dtolnay/rust-toolchain@stable

      - name: Install cbindgen for C header generation
        run: cargo install cbindgen

      - name: Cache Rust dependencies
        uses: Swatinem/rust-cache@v2
        with:
          workspaces: flow-core

      - name: Run Rust tests
        run: |
          cd flow-core
          cargo test --lib

      - name: Build Rust library
        run: |
          cd flow-core
          cargo build

      - name: Verify C header is up-to-date
        run: |
          # Check that the generated header matches what's in the repo
          if ! git diff --quiet Sources/CFlow/include/flow.h; then
            echo "ERROR: C header is out of sync with Rust FFI"
            echo "Generated header differs from committed version."
            echo "This likely means new FFI functions were added without updating the header."
            echo ""
            echo "Differences:"
            git diff Sources/CFlow/include/flow.h
            exit 1
          fi

      - name: Build FlowHelper
        run: |
          cd FlowHelper
          swift build

      - name: Build Swift package
        run: |
          swift build