name: Backend CI - cargo fmt

on:
  push:
    branches:
      - master
    paths:
      - '.github/workflows/backend*'
      - 'backend/**'
      - '!frontend/**'
  pull_request:
    paths:
      - '.github/workflows/backend*'
      - 'backend/**'
      - '!frontend/**'

env:
  CARGO_TERM_COLOR: always

defaults:
  run:
    working-directory: ./backend

jobs:
  fmt:
    name: Run rustfmt
    runs-on: ubuntu-latest
    steps:
      - name: Checkout sources
        uses: actions/checkout@v3

      - name: Install Rust stable toolchain
        uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: stable
          override: true
          components: clippy, rustfmt

      - name: Cargo fmt
        run: cargo fmt --verbose --all -- --check