# CI for the whole Cargo workspace. Although having two relatively independent
# crates in this workspace (as they do not get released together, as for example
# tokio with its sub crates), a PR for a certain CI may report errors in the
# other workspace members. I think this is unfortunate. I've experimented with
# CI runs per workspace member but the complexity in the end was not worth it.
# Instead, it is the right thing that the CI always covers the whole repository
# and that it is as stable as possible.

name: "Cargo workspace"

# Run on every push (tag, branch) and pull_request
on: [pull_request, push, workflow_dispatch]

env:
  CARGO_TERM_COLOR: always

jobs:
  ### Regular Build  #########################
  build_msrv:
    name: build (msrv)
    uses: ./.github/workflows/_build-rust.yml
    with:
      rust-version: 1.68.0 # MSRV
      do-style-check: false
      features: builder

  build_stable:
    name: build (stable)
    uses: ./.github/workflows/_build-rust.yml
    with:
      rust-version: stable
      do-style-check: false
      features: builder

  build_nightly:
    name: build (nightly)
    uses: ./.github/workflows/_build-rust.yml
    with:
      rust-version: nightly
      do-style-check: false
      features: builder,unstable

  ### no-std Build   #########################
  build_nostd_msrv:
    name: build no_std (msrv)
    needs: build_msrv
    uses: ./.github/workflows/_build-rust.yml
    with:
      rust-version: 1.68.0 # MSRV
      do-style-check: false
      rust-target: thumbv7em-none-eabihf
      features: builder

  build_nostd_stable:
    name: build no_std (stable)
    needs: build_stable
    uses: ./.github/workflows/_build-rust.yml
    with:
      rust-version: stable
      do-style-check: false
      rust-target: thumbv7em-none-eabihf
      features: builder

  # Also tests the build one time without the "builder" feature.
  build_nostd_stable_no_builder:
    name: build no_std (stable) [w/o builder]
    needs: build_stable
    uses: ./.github/workflows/_build-rust.yml
    with:
      rust-version: stable
      do-style-check: false
      rust-target: thumbv7em-none-eabihf

  # We perform one single run also in Windows. This should be sufficient to
  # check that devs can also use this on Windows.
  build_nostd_stable_windows:
    name: build no_std (stable) [Windows]
    needs: build_stable
    uses: ./.github/workflows/_build-rust.yml
    with:
      runs-on: windows-latest
      # Quirk for the Windows powershell and its handling of empty arguments.
      # features: >
      #   '""'
      rust-version: stable
      do-style-check: false
      rust-target: thumbv7em-none-eabihf
      features: builder

  build_nostd_nightly:
    name: build no_std (nightly)
    needs: build_nightly
    uses: ./.github/workflows/_build-rust.yml
    with:
      rust-version: nightly
      do-style-check: false
      rust-target: thumbv7em-none-eabihf
      features: builder,unstable

  ### Style Checks + Doc #####################
  style_msrv:
    name: style (msrv)
    needs: build_msrv
    uses: ./.github/workflows/_build-rust.yml
    with:
      rust-version: 1.68.0 # MSRV
      do-style-check: true
      do-test: false
      features: builder

  style_stable:
    name: style (stable)
    needs: build_stable
    uses: ./.github/workflows/_build-rust.yml
    with:
      rust-version: stable
      do-style-check: true
      do-test: false
      features: builder

  style_nightly:
    name: style (nightly)
    needs: build_nightly
    uses: ./.github/workflows/_build-rust.yml
    with:
      rust-version: nightly
      do-style-check: true
      do-test: false
      features: builder,unstable

  integrationtest:
    name: integrationtest
    needs:
      - build_nightly
      - build_nostd_nightly
    runs-on: ubuntu-latest
    steps:
      - name: Check out
        uses: actions/checkout@v3
      - uses: cachix/install-nix-action@v20
        with:
          # This channel is only required to invoke "nix-shell".
          # Everything inside that nix-shell will use a pinned version of
          # nixpkgs.
          nix_path: nixpkgs=channel:nixos-23.05
      - name: Set up cargo cache
        uses: actions/cache@v3
        continue-on-error: false
        with:
          path: |
            ~/.cargo/bin/
            ~/.cargo/registry/index/
            ~/.cargo/registry/cache/
            ~/.cargo/git/db/
            integration-test/bins/target/
          # Hash over Cargo.toml and Cargo.lock, as this might be copied to
          # projects that do not have a Cargo.lock in their repository tree!
          key: ${{ runner.os }}-${{ github.job }}-${{ hashFiles('integration-test/**/Cargo.toml', 'integration-test/**/Cargo.lock', 'integration-test/bins/rust-toolchain.toml') }}
      # Have all the "copying into Nix store" messages in a dedicated step for
      # better log visibility.
      - run: cd integration-test && nix-shell --run "echo OK" && cd ..
      # Now, run the actual test.
      - run: cd integration-test && nix-shell --run ./run.sh && cd ..

  miri:
    name: tests with miri (nightly)
    needs: build_nightly
    uses: ./.github/workflows/_build-rust.yml
    with:
      rust-version: nightly
      do-style-check: false
      do-test: false
      do-miri: true
      features: builder,unstable