name: CI checks

on:
  pull_request:
  push:
    branches: main

jobs:
  test-msrv:
    name: Test MSRV on ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-latest, windows-latest, macOS-latest]
    steps:
      - uses: actions/checkout@v4
      - name: Run tests
        run: cargo test --verbose --all-features
      - name: Run tests (without bitvec)
        run: cargo test --verbose --no-default-features --features derive
      - name: Verify working directory is clean
        run: git diff --exit-code

  test-latest:
    name: Test latest on ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-latest, windows-latest, macOS-latest]
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@stable
        id: toolchain
      - run: rustup override set ${{steps.toolchain.outputs.name}}
      - name: Remove lockfile to build with latest dependencies
        run: rm Cargo.lock
      - name: Run tests
        run: cargo test --verbose --all-features
      - name: Run tests (without bitvec)
        run: cargo test --verbose --no-default-features --features derive
      - name: Verify working directory is clean (excluding lockfile)
        run: git diff --exit-code ':!Cargo.lock'

  build-nodefault:
    name: Build target ${{ matrix.target }}
    runs-on: ubuntu-latest
    strategy:
      matrix:
        target:
          - wasm32-wasi
          - thumbv6m-none-eabi
          - thumbv7em-none-eabihf
    steps:
      - uses: actions/checkout@v4
        with:
          path: crate_root
      # We use a synthetic crate to ensure no dev-dependencies are enabled, which can
      # be incompatible with some of these targets.
      - name: Create synthetic crate for testing
        run: cargo init --edition 2021 --lib ci-build
      - name: Copy Rust version into synthetic crate
        run: cp crate_root/rust-toolchain.toml ci-build/
      - name: Copy patch directives into synthetic crate
        run: |
          echo "[patch.crates-io]" >> ./ci-build/Cargo.toml
          cat ./crate_root/Cargo.toml | sed "0,/.\+\(patch.crates.\+\)/d" >> ./ci-build/Cargo.toml
      - name: Add no_std pragma to lib.rs
        run: |
          echo "#![no_std]" > ./ci-build/src/lib.rs
      - name: Add ff as a dependency of the synthetic crate
        working-directory: ./ci-build
        # run: cargo add --no-default-features --path ../crate_root
        run: sed -i 's;\[dependencies\];\[dependencies\]\nff = { path = "../crate_root", default-features = false };g' ./Cargo.toml
      - name: Add target
        working-directory: ./ci-build
        run: rustup target add ${{ matrix.target }}
      - name: Build for target
        working-directory: ./ci-build
        run: cargo build --verbose --target ${{ matrix.target }}
      - name: Enable the bits feature of ff
        working-directory: ./ci-build
        # run: cargo add --no-default-features --features bits --path ../crate_root
        run: sed -i 's;ff = { path = "../crate_root", default-features = false };ff = { path = "../crate_root", default-features = false, features = ["bits"] };g' ./Cargo.toml
      - name: Build for target with the bits feature
        working-directory: ./ci-build
        run: cargo build --verbose --target ${{ matrix.target }}

  doc-links:
    name: Intra-doc links
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - run: cargo fetch
      # Requires #![deny(rustdoc::broken_intra_doc_links)] in crates.
      - run: sudo apt-get -y install libfontconfig1-dev
      - name: Check intra-doc links
        run: cargo doc --all-features --document-private-items

  fmt:
    name: Rustfmt
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - run: cargo fmt -- --check