name: Rust

on:
  push:
    branches: ["main"]
    tags: ["**"]
  pull_request:

env:
  CARGO_TERM_COLOR: always
  RUSTFLAGS: "-D warnings"

jobs:
  test:
    strategy:
      matrix:
        os: [ubuntu-latest, windows-latest, macos-latest]
    runs-on: ${{ matrix.os }}
    steps:
      - uses: actions/checkout@v7
      - uses: dtolnay/rust-toolchain@stable
      - run: cargo test --lib --no-default-features
      - run: cargo test --all-features

  # TODO: no_std
  #  build-nostd:
  #    name: Build on no_std target (thumbv7em-none-eabi)
  #    runs-on: ubuntu-latest
  #    steps:
  #      - uses: actions/checkout@v7
  #      - uses: dtolnay/rust-toolchain@master
  #        with:
  #          toolchain: stable
  #          targets: thumbv7em-none-eabi
  #      - run: cargo build --target thumbv7em-none-eabi --lib --release --no-default-features

  nightly:
    name: Test nightly compiler
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v7
      - uses: dtolnay/rust-toolchain@nightly
      - run: cargo test --all-features

  clippy:
    name: Check that clippy is happy
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v7
      - uses: dtolnay/rust-toolchain@stable
        with:
          components: clippy
      - run: cargo clippy --all-features --all-targets

  rustfmt:
    name: Check formatting
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v7
      - uses: dtolnay/rust-toolchain@stable
        with:
          components: rustfmt
      - run: cargo fmt -- --check

  msrv:
    name: Current MSRV is 1.60.0
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v7
      # First run `cargo +nightly -Z minimal-verisons check` in order to get a
      # Cargo.lock with the oldest possible deps
      # - uses: dtolnay/rust-toolchain@nightly
      # - run: cargo -Z minimal-versions check --all-features --lib
      # Now check that `cargo build` works with respect to the oldest possible
      # deps and the stated MSRV
      - uses: dtolnay/rust-toolchain@1.60.0
      - run: cargo build --all-features --lib

  semver:
    name: Check semver compatibility
    runs-on: ubuntu-latest
    steps:
      - name: Checkout sources
        uses: actions/checkout@v4
        with:
          persist-credentials: false
      - name: Check semver
        uses: obi1kenobi/cargo-semver-checks-action@v2

  audit:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: EmbarkStudios/cargo-deny-action@v2

#  TODO: broken - migrate to criterion
#  bench:
#    name: Check that benchmarks compile
#    runs-on: ubuntu-latest
#    steps:
#    - uses: actions/checkout@v7
#    - uses: dtolnay/rust-toolchain@nightly
#    - name: Build default (host native) bench
#      run: cargo build --benches