name: Setup Rust
description: Install the Rust toolchain (+ optional targets) and restore the build cache.
inputs:
  target:
    description: Comma-separated extra target triples to install
    required: false
    default: ''
  save-cache:
    description: Whether to save the Rust cache
    required: false
    default: 'false'
  restore-cache:
    description: Whether to restore the Rust cache
    required: false
    default: 'true'
runs:
  using: composite
  steps:
    - name: Install Rust (stable)
      uses: dtolnay/rust-toolchain@stable
      with:
        toolchain: stable
        targets: ${{ inputs.target }}
        components: cargo, clippy, rustc, rustfmt

    - name: Cache Rust
      if: ${{ inputs.restore-cache == 'true' }}
      uses: Swatinem/rust-cache@master
      with:
        key: ${{ inputs.target }}
        save-if: ${{ inputs.save-cache }}
        shared-key: release-cache