name: "Build Rust Projects with Cross"
author: "Dave Rolsky <autarch@urth.org>"
branding:
  icon: home
  color: gray-dark
description: |
  Cross compile your Rust projects with cross (https://github.com/cross-rs/cross).
inputs:
  working-directory:
    description: The working directory for each step
    default: "."
  command:
    description: |
      The commands to run (one of "build", "test", or "both").
    default: build
  target:
    description: The target platform
    required: true
  toolchain:
    description: |
      The target toolchain to use (one of "stable", "beta", or "nightly").
    default: stable
  GITHUB_TOKEN:
    description: |
      A GitHub token, available in the secrets.GITHUB_TOKEN working-directory variable.
    default: ${{ github.token }}
  args:
    description: |
      The arguments to be passed to cross or cargo when building, as a
      space-separated string.
    default: ""
  strip:
    description: Strip the compiled binary
    default: false
  cross-version:
    description: |
      The version of cross to use. If not specified, then the latest version
      will be used.
runs:
  using: composite
  steps:
    - name: Add this action's path to PATH
      shell: bash
      run: echo "${{ github.action_path }}" >> $GITHUB_PATH
    - name: Determine whether we need to cross-compile
      id: determine-cross-compile
      shell: bash
      run: set-cross-compile.sh ${{ inputs.target }}
    - name: Install toolchain
      uses: dtolnay/rust-toolchain@master
      with:
        targets: ${{ inputs.target }}
        toolchain: ${{ inputs.toolchain }}
    - name: Determine cross version
      id: determine-cross-version
      shell: bash
      run: determine-cross-version.sh "${{ inputs.cross-version }}"
      env:
        GITHUB_TOKEN: ${{ inputs.GITHUB_TOKEN }}
      if: ${{ steps.determine-cross-compile.outputs.needs-cross == 'true' }}
    # We need to accesss this in both this YAML config and shell scripts. It
    # doesn't seem like using ${{ env.RUNNER_TEMP }} works in the YAML config.
    - name: Set directory for installing cross
      id: set-cross-dir
      shell: bash
      run: set-cross-dir.sh
      if: ${{ steps.determine-cross-compile.outputs.needs-cross == 'true' }}
    - name: Cache cross
      id: cache-cross
      uses: actions/cache@v3
      with:
        path: ${{ steps.set-cross-dir.outputs.cross-dir }}/cross
        key: ${{ runner.os }}-${{ steps.determine-cross-version.outputs.cross-version }}
      if: ${{ steps.determine-cross-compile.outputs.needs-cross == 'true' }}
    - name: Install cross if cross-compiling (*nix)
      shell: bash
      run: install-cross-nix.sh ${{ steps.set-cross-dir.outputs.cross-dir }} ${{ steps.determine-cross-version.outputs.cross-version }}
      if: ${{ steps.determine-cross-compile.outputs.needs-cross == 'true' && steps.cache-cross.outputs.cache-hit != 'true' }}
      env:
        GITHUB_TOKEN: ${{ inputs.GITHUB_TOKEN }}
    - name: Set build command
      id: set-build-command
      shell: bash
      run: set-build-command.sh ${{ steps.set-cross-dir.outputs.cross-dir }}
    - name: Run tests (*nix)
      working-directory: ${{ inputs.working-directory }}
      shell: bash
      run: |
        ${{ steps.set-build-command.outputs.build-command }} +${{inputs.toolchain}} test ${{ inputs.args }} --target ${{ inputs.target }}
      if: ${{ inputs.command != 'build' && runner.os != 'Windows' }}
    # We want to run in Powershell on Windows to make sure we compile in a
    # native Windows environment. Some things won't compile properly under
    # msys, notably OpenSSL, which is compiled locally when using the
    # `openssl` crate with the `vendored` feature.
    - name: Run tests (Windows)
      working-directory: ${{ inputs.working-directory }}
      shell: powershell
      run: |
        & ${{ steps.set-build-command.outputs.build-command }} +${{inputs.toolchain}} test ${{ inputs.args }} --target ${{ inputs.target }}
      if: ${{ inputs.command != 'build' && runner.os == 'Windows' }}
    - name: Build binary (*nix)
      working-directory: ${{ inputs.working-directory }}
      shell: bash
      run: |
        ${{ steps.set-build-command.outputs.build-command }} +${{inputs.toolchain}} build ${{ inputs.args }} --target ${{ inputs.target }}
      if: ${{ inputs.command != 'test' && runner.os != 'Windows' }}
    - name: Build binary (Windows)
      working-directory: ${{ inputs.working-directory }}
      shell: powershell
      run: |
        & ${{ steps.set-build-command.outputs.build-command }} +${{inputs.toolchain}} build ${{ inputs.args }} --target ${{ inputs.target }}
      if: ${{ inputs.command != 'test' && runner.os == 'Windows' }}
    - name: Strip binary
      working-directory: ${{ inputs.working-directory }}
      shell: bash
      run: strip-binary.sh ${{ inputs.target }}
      # strip doesn't work with cross-arch binaries on Linux or Windows.
      if: ${{ inputs.command != 'test' && inputs.strip == 'true' && steps.determine-cross-compile.outputs.needs-cross == 'false' && inputs.target != 'aarch64-pc-windows-msvc' }}