fmt.yml

name: Format

on: [pull_request]

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

env:
  # When getting Rust dependencies, retry on network error:
  CARGO_NET_RETRY: 10
  # Use the local .curlrc
  CURL_HOME: .

jobs:
  changes:
    runs-on: ubuntu-latest
    permissions:
      pull-requests: read
    outputs:
      sources: ${{ steps.filter.outputs.sources }}
    steps:
      - uses: actions/checkout@v4
        if: github.event_name == 'push'
      - uses: dorny/paths-filter@v3
        id: filter
        with:
          filters: |
            sources:
              - .github/workflows/fmt.yml
              - src/**
              - Cargo.lock
              - Cargo.toml
              - rust-toolchain.toml

  test:
    name: fmt
    if: needs.changes.outputs.sources == 'true'
    needs: changes
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - name: Cache Cargo
        uses: actions/cache@v4
        with:
          path: |
            ~/.cargo/registry
            ~/.cargo/git
            target
          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}-1

      - name: Run Cargo Fmt
        run: cargo fmt --all -- --check
        env:
          RUST_BACKTRACE: 1

  aggregate:
    name: fmt:required
    if: always() && needs.changes.outputs.sources == 'true'
    needs: [changes, test]
    runs-on: ubuntu-latest
    steps:
      - name: check step result directly
        if: ${{ needs.test.result != 'success' }}
        run: exit 1