name: Rust CI

on: [push, pull_request]

jobs:
  rust:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout (with libilbc submodule)
        uses: actions/checkout@v6
        with:
          submodules: recursive

      # build.rs links libspandsp (G.722) and libilbc (iLBC). Ubuntu
      # packages spandsp; libilbc has no package, so build it from the
      # in-repo submodule and install the .so + dev symlink into
      # /usr/local where build.rs looks.
      - name: Install native deps
        run: |
          sudo apt-get update
          sudo apt-get install -y cmake build-essential libspandsp-dev
          cd libilbc
          cmake . -DCMAKE_INSTALL_LIBDIR=/usr/local/lib -DCMAKE_INSTALL_INCLUDEDIR=/usr/local/include
          cmake --build .
          sudo cmake --install .
          sudo ldconfig

      # CI runs glibc, so the musl-only rustls ICE that pins the Docker
      # image to 1.92 does not apply here — stable is fine.
      - name: Install Rust toolchain
        uses: dtolnay/rust-toolchain@stable
        with:
          components: rustfmt, clippy

      - name: Cache cargo
        uses: actions/cache@v5
        with:
          path: |
            ~/.cargo/registry
            ~/.cargo/git
            rust/target
          key: ${{ runner.os }}-cargo-${{ hashFiles('rust/Cargo.lock') }}

      - name: rustfmt
        working-directory: rust
        run: cargo fmt --all -- --check

      - name: clippy
        working-directory: rust
        run: cargo clippy --all-targets --locked -- -D warnings

      - name: check
        working-directory: rust
        run: cargo check --all-targets --locked

      - name: test
        working-directory: rust
        run: cargo test --lib --locked