ci.yml

on:
  pull_request:
    branches: [main]
  push:
    branches: [main]
  release:
    types: [published]

name: CI

jobs:
  build:
    name: Build
    runs-on: ubuntu-latest
    env:
      RUSTFLAGS: "-D warnings"
    strategy:
      matrix:
        target:
          - aarch64-unknown-linux-gnu
          - x86_64-pc-windows-gnu
          - x86_64-unknown-linux-gnu
          - thumbv7em-none-eabihf
          - thumbv6m-none-eabi
    steps:
      - name: Checkout sources
        uses: actions/checkout@v4

      - name: Install cross
        uses: taiki-e/install-action@cross

      - name: Build
        run: cross build --all-features --release --target=${{ matrix.target }}

  build_full:
    name: Build examples and tests (on-target)
    runs-on: ubuntu-latest
    env:
      RUSTFLAGS: "-D warnings"
    steps:
      - name: Checkout sources
        uses: actions/checkout@v4

      - name: Install stable toolchain
        uses: dtolnay/rust-toolchain@stable
        with:
          targets: thumbv7em-none-eabihf

      - name: Build
        run: cargo build --all-features --all-targets --release

  tests:
    name: Run tests (x86_64)
    runs-on: ubuntu-latest
    env:
      RUSTFLAGS: "-D warnings"
      RUST_BACKTRACE: 1
    steps:
      - name: Checkout sources
        uses: actions/checkout@v4

      - name: Install stable toolchain
        uses: dtolnay/rust-toolchain@stable

      - name: Enable test harness
        run: sed -i '/harness = false/c\#harness = false' Cargo.toml

      - name: Run tests
        run: cargo test --lib --all-features --target=x86_64-unknown-linux-gnu

  lints:
    name: Lints
    runs-on: ubuntu-latest
    steps:
      - name: Checkout sources
        uses: actions/checkout@v4

      - name: Install stable toolchain
        uses: dtolnay/rust-toolchain@stable
        with:
          components: clippy
          targets: thumbv7em-none-eabihf

      - name: Run cargo fmt
        run: cargo fmt --all -- --check

      - name: Run cargo clippy
        run: cargo clippy --all-features --all-targets -- -D warnings

  docs:
    name: Documentation
    runs-on: ubuntu-latest
    steps:
      - name: Checkout sources
        uses: actions/checkout@v4

      - name: Install stable toolchain
        uses: dtolnay/rust-toolchain@stable
        with:
          targets: thumbv7em-none-eabihf

      - name: Run cargo doc
        env:
          RUSTDOCFLAGS: "-Dwarnings"
        run: cargo doc --no-deps

  msrv:
    name: Minimum Supported Rust Version
    runs-on: ubuntu-latest
    env:
      RUSTFLAGS: "-D warnings"
    steps:
      - name: Checkout sources
        uses: actions/checkout@v4

      - name: Install cargo-binstall
        uses: taiki-e/install-action@v2
        with:
          tool: cargo-binstall

      - name: Install cargo-msrv
        run: cargo binstall --version 0.16.0-beta.17 --no-confirm cargo-msrv

      #- uses: Swatinem/rust-cache@v1

      - name: Check MSRV
        #run: cargo msrv --target=thumbv7em-none-eabihf --log-target=stdout
        run: cargo msrv verify --target=thumbv7em-none-eabihf --log-target=stdout

  semver:
    name: Semantic Versioning
    runs-on: ubuntu-latest
    env:
      # No idea why this fixes the check.
      RUSTFLAGS: "--cap-lints=warn"
    steps:
      - name: Checkout sources
        uses: actions/checkout@v4

      - name: Install stable toolchain
        uses: dtolnay/rust-toolchain@stable
        with:
          targets: thumbv7em-none-eabihf

      - name: Check semver
        uses: obi1kenobi/cargo-semver-checks-action@v2

  release:
    name: Publish version
    runs-on: ubuntu-latest
    environment: production
    if: github.event_name == 'release'
    needs: [build, build_full, tests, lints, docs, msrv, semver]
    steps:
      - name: Checkout sources
        uses: actions/checkout@v4

      - name: Install stable toolchain
        uses: dtolnay/rust-toolchain@stable
        with:
          targets: thumbv7em-none-eabihf

      - name: Query crate version
        run: echo "crate_version=$(cargo metadata --format-version=1 --no-deps | python -c "import sys,json; print('v' + json.load(sys.stdin)['packages'][0]['version'])")" >> $GITHUB_ENV

      - name: Query release tag version
        run: echo "release_tag_version=${{ github.event.release.name }}" >> $GITHUB_ENV

      - name: Print versions
        run: echo "Crate - ${{ env.crate_version }}, Release - ${{ env.release_tag_version }}"

      - name: Check version not empty
        run: test -n ${{ env.crate_version }}

      - name: Check matching versions
        run: test ${{ env.crate_version }} = ${{ env.release_tag_version }}

      - name: Cargo login
        run: cargo login ${{ secrets.CRATES_IO_TOKEN }}

      - name: Cargo publish
        run: cargo publish