name: CI

on:
  pull_request:
  push:
    branches:
      - master
      - staging
      - trying

env:
  RUSTFLAGS: -Dwarnings

jobs:
  build_and_test:
    name: Build and test
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-latest, windows-latest, macOS-latest]
        rust: [nightly, beta, stable]

    steps:
    - uses: actions/checkout@master

    - name: Install ${{ matrix.rust }}
      uses: actions-rs/toolchain@v1
      with:
        toolchain: ${{ matrix.rust }}
        override: true

    - name: Cache cargo registry
      uses: actions/cache@v1
      with:
        path: ~/.cargo/registry
        key: ${{ matrix.os }}-${{ matrix.rust }}-cargo-registry-${{ hashFiles('**/Cargo.toml') }}

    - name: Cache cargo index
      uses: actions/cache@v1
      with:
        path: ~/.cargo/git
        key: ${{ matrix.os }}-${{ matrix.rust }}-cargo-index-${{ hashFiles('**/Cargo.toml') }}

    - name: Cache cargo build
      uses: actions/cache@v1
      with:
        path: target
        key: ${{ matrix.os }}-${{ matrix.rust }}-cargo-build-target-${{ hashFiles('**/Cargo.toml') }}

    - name: check
      uses: actions-rs/cargo@v1
      with:
        command: check
        args: --all --bins --tests

    - name: check unstable
      uses: actions-rs/cargo@v1
      with:
        command:  check
        args: --features unstable --all --bins --examples --tests
        
    - name: check wasm
      uses: actions-rs/cargo@v1
      with:
        command:  check
        target: wasm32-unknown-unknown
        override: true
        args: --features unstable --all --bins --tests

    - name: check bench
      uses: actions-rs/cargo@v1
      if: matrix.rust == 'nightly'
      with:
        command:  check
        args: --benches

    - name: check std only
      uses: actions-rs/cargo@v1
      with:
        command:  check
        args: --no-default-features --features std

    - name: check attributes
      uses: actions-rs/cargo@v1
      with:
        command:  check
        args: --features attributes

    - name: tests
      uses: actions-rs/cargo@v1
      with:
        command: test
        args: --all --features "unstable attributes"

  build__with_no_std:
    name: Build with no-std
    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@master

    - name: setup
      run: |
        rustup default nightly
        rustup target add thumbv7m-none-eabi

    - name: check no_std
      uses: actions-rs/cargo@v1
      with:
        command:  check
        args: --no-default-features --features alloc --target thumbv7m-none-eabi -Z avoid-dev-deps

  check_fmt_and_docs:
    name: Checking fmt and docs
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@master

    - uses: actions-rs/toolchain@v1
      with:
          profile: minimal
          toolchain: nightly
          override: true
          components: rustfmt

    - name: setup
      run: |
        rustup component add rustfmt
        test -x $HOME/.cargo/bin/mdbook || ./ci/install-mdbook.sh
        rustc --version

    - name: mdbook
      run: |
        mdbook build docs
    - name: fmt
      run: cargo fmt --all -- --check

    - name: Docs
      run: cargo doc --features docs