name: ci-rust

on:
  push:
    branches: [main]
    paths:
      - "rs/**"
      - ".github/workflows/ci-rust.yml"
  pull_request:
    branches: [main]
    paths:
      - "rs/**"
      - ".github/workflows/ci-rust.yml"

jobs:
  build-and-test:
    name: Build & Test (windows-latest / x86_64-pc-windows-msvc)
    runs-on: windows-latest

    steps:
      - uses: actions/checkout@v4

      # Stable toolchain + clippy.
      # windows-latest ships with the MSVC linker and Windows SDK, so
      # x86_64-pc-windows-msvc is available without any extra setup.
      - name: Install Rust stable
        uses: dtolnay/rust-toolchain@stable
        with:
          components: clippy

      # Cache ~/.cargo/registry, ~/.cargo/git, and rs/target.
      # workspaces: "<manifest-dir> -> <target-dir>" (non-root workspace)
      - name: Cache Rust build artefacts
        uses: Swatinem/rust-cache@v2
        with:
          workspaces: rs -> rs/target

      # Type-check the whole workspace (browser adapter guards itself with
      # #[cfg(target_arch = "wasm32")], so it compiles to a no-op here).
      - name: cargo check (workspace)
        working-directory: rs
        run: cargo check --workspace --all-targets

      - name: cargo clippy (workspace)
        working-directory: rs
        run: cargo clippy --workspace --all-targets -- -D warnings

      - name: cargo test (workspace)
        working-directory: rs
        run: cargo test --workspace

      # Full release build to catch LTO / codegen-units issues early.
      - name: cargo build --release (windows adapter + tools)
        working-directory: rs
        run: cargo build -p capslockx-windows -p clx-screen-reader --release

  build-linux:
    name: Build & Test (ubuntu-latest / x86_64-unknown-linux-gnu)
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - name: Install Rust stable
        uses: dtolnay/rust-toolchain@stable
        with:
          components: clippy

      - name: Cache Rust build artefacts
        uses: Swatinem/rust-cache@v2
        with:
          workspaces: rs -> rs/target

      # linux crate compiles to real impl; windows/browser crates compile to
      # their stubs (cfg guards keep them valid on non-target platforms).
      - name: cargo check (workspace)
        working-directory: rs
        run: cargo check --workspace --all-targets

      - name: cargo clippy (workspace)
        working-directory: rs
        run: cargo clippy --workspace --all-targets -- -D warnings

      - name: cargo test (workspace)
        working-directory: rs
        run: cargo test --workspace

      # Full release build of the Linux adapter.
      - name: cargo build --release (linux adapter)
        working-directory: rs
        run: cargo build -p capslockx-linux --release