name: Rust Checks

on:
  pull_request:
    branches: ["main"]
    paths:
      - '**/*.rs'
      - '**/Cargo.toml'
      - 'Cargo.lock'

env:
  CARGO_TERM_COLOR: always

jobs:
  lints:
    name: Lints
    runs-on: ubuntu-latest

    steps:
      - name: Checkout sources
        uses: actions/checkout@v4

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

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

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

      - name: Run cargo clippy
        run: cargo clippy -- -Dwarnings

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