ci.yml

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

name: CI

env:
  RUSTFLAGS: "-D warnings"

jobs:
  build_examples:
    name: Build examples
    runs-on: ubuntu-latest
    steps:
      - name: Checkout sources
        uses: actions/checkout@v3

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

      - name: Build
        run: cargo build --all-features --examples

  build_examples_release:
    name: Build examples (release)
    runs-on: ubuntu-latest
    steps:
      - name: Checkout sources
        uses: actions/checkout@v3

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

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

  lints:
    name: Lints
    runs-on: ubuntu-latest
    steps:
      - name: Checkout sources
        uses: actions/checkout@v3

      - 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 --examples --lib --bins -- -D warnings

  docs:
    name: Documentation
    runs-on: ubuntu-latest
    steps:
      - name: Checkout sources
        uses: actions/checkout@v3

      - 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 --examples --all-features

  msrv:
    name: Minimum Supported Rust Version, based on min dependency versions
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

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

      - name: Install dependencies
        uses: taiki-e/install-action@v2
        with:
          tool: cargo-hack, cargo-minimal-versions, cargo-binstall

      - name: Install cargo-msrv
        run: cargo binstall --version 0.16.0-beta.22 --no-confirm cargo-msrv

      # TODO: Revert to this, once https://github.com/foresterre/cargo-msrv/issues/936 is fixed.
      # - name: Check with minimal versions
      #   # To find out the current MSRV, remove the `rust-version` entry from `Cargo.toml` and run:
      #   # run: cargo minimal-versions msrv --output-format json --all-features --target=thumbv7em-none-eabihf --log-target=stdout --log-level debug
      #   run: cargo minimal-versions msrv --output-format json --all-features --target thumbv7em-none-eabihf verify

      # WORKAROUND:
      - name: Determine MSRV
        run: echo "MSRV=$(cargo msrv show --output-format=minimal)" >> $GITHUB_ENV

      - name: Show MSRV
        run: echo $MSRV

      - name: Install MSRV Rust version
        run: rustup toolchain install $MSRV --target thumbv7em-none-eabihf

      - name: Check with minimal versions
        run: cargo +${MSRV} minimal-versions check --target thumbv7em-none-eabihf --all-features

  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
        with:
          feature-group: "all-features"

  release:
    name: Publish version
    runs-on: ubuntu-latest
    environment: production
    if: github.event_name == 'release'
    needs: [build_examples, build_examples_release, lints, docs, msrv, semver]
    steps:
      - name: Checkout sources
        uses: actions/checkout@v3

      - 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 --all-features