action.yml

name: cargo action
author: Clement Tsang
description: Invoke cargo/cross and commands.
branding:
  icon: box
  color: blue

inputs:
  command:
    description: The `cargo` command to run (e.g. `build`, `test`).
    required: true

  toolchain:
    description: The toolchain to use. Do not include the `+` sign (e.g. `nightly`, `beta`). Defaults to stable.
    required: false
    default: ""

  args:
    description: What arguments to pass to the cargo/cross command.
    required: false
    default: ""

  use-cross:
    description: Whether to use cross instead of using cargo. If enabled, cross will automatically be installed if needed.
    required: false
    default: "false"

  cross-version:
    description: >
      The cross version to use. Only used if `use-cross` is enabled. If not set, defaults to the newest stable
      version of cross.
    required: false
    default: ""

  directory:
    description: >
      Change to the specified directory prior to execution. Useful if your repo's base folder does not contain your
      Rust project.
    required: false
    default: ""

runs:
  using: composite
  steps:
    - name: Handle inputs.
      id: set-flags
      shell: bash
      run: |
        if [[ ${{inputs.use-cross}} == false ]]; then
          echo "::set-output name=invoker::cargo";
        else
          echo "::set-output name=invoker::cross";
        fi

        if [[ -n "${{inputs.toolchain}}" ]]; then
          echo "::set-output name=toolchain::+${{inputs.toolchain}}";
        fi

    - name: Install cross if required.
      shell: bash
      if: inputs.use-cross == 'true'
      run: |
        if [[ -n "${{inputs.cross-version}}" ]]; then
          CROSS_VERSION_ARG="--version=${{inputs.cross-version}}";
        fi
        cargo install cross --locked ${CROSS_VERSION_ARG};

    - name: Execute the cargo/cross command.
      shell: bash
      run: |
        if [[ -n "${{inputs.directory}}" ]]; then
          cd ${{inputs.directory}};
        fi
        ${{ steps.set-flags.outputs.invoker }} ${{ steps.set-flags.outputs.toolchain }} ${{inputs.command}} ${{inputs.args}};