name: Rust

on:
  push:
    branches: [ main ]
  pull_request:
    branches: [ main ]

env:
  CARGO_TERM_COLOR: always

jobs:
  build:
    name: Build
    runs-on: ubuntu-latest

    permissions:
      contents: read
      actions: write
      checks: write

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

    - name: Install latest stable Rust toolchain
      uses: dtolnay/rust-toolchain@stable
      with:
        components: rustfmt, clippy

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

    - name: Build Release
      run: cargo build --release --verbose

    - name: Check for unused dependencies
      run: cargo udeps || true