name: 'cargo-semver-checks'
description: 'Ensure the public API in your Rust crate follows semantic versioning'
branding:
  icon: 'check-circle'
  color: 'green'
inputs:
  crate-name:
    description: 'The crate whose API to check for semver. If not set, all crates in the workspace are processed.'
    required: false
    default: ''
runs:
  using: "composite"
  steps:
    - name: Install rust
      uses: actions-rs/toolchain@v1
      with:
        toolchain: stable
        profile: minimal
    - name: Check for semver violations
      shell: bash
      run: |
        set -euxo pipefail

        # Colorize output, since GitHub Actions terminals support color.
        export CARGO_TERM_COLOR=always

        # If crate to check is specified, pass it to cargo-semver-checks,
        # otherwise use `--workspace` option.
        if [[ "${{ inputs.crate-name }}" == '' ]]; then
          export PACKAGE_OPTION="--workspace"
        else
          export PACKAGE_OPTION="--package ${{ inputs.crate-name }}"
        fi

        # Check for semver violations.
        cargo install cargo-semver-checks --locked
        cargo semver-checks check-release $PACKAGE_OPTION