---
name: Release Cargo-bazel
on:
  workflow_dispatch:
  push:
    branches:
      - main
    paths:
      - crate_universe/version.bzl

defaults:
  run:
    shell: bash

jobs:
  validation:
    runs-on: ubuntu-20.04
    steps:
      - uses: actions/checkout@v3
      # TODO: Unfortunately it's not obvious how to restrict `workflow_dispatch` to a particular branch
      # so this step ensures releases are always done off of `main`.
      - name: Ensure branch is 'main'
        run: |
          git fetch origin &> /dev/null
          branch="$(git rev-parse --abbrev-ref HEAD)"
          if [[ "${branch}" != "main" ]]; then
            echo "The release branch must be main. Got '${branch}'' instead." >&2
            exit 1
          else
            echo "Branch is '${branch}'"
          fi
  builds:
    needs: validation
    runs-on: ubuntu-20.04
    steps:
      - uses: actions/checkout@v3
      - name: Install rust toolchains for host
        run: |
          # Detect the current version of rust
          version="$(grep 'DEFAULT_RUST_VERSION =' ./rust/private/common.bzl | grep -o '[[:digit:].]\+')"
          rustup override set "${version}"
          rustup update stable && rustup default stable
      - name: Publish to crates.io
        run: cargo publish --token ${CRATES_TOKEN}
        working-directory: ./crate_universe
        env:
          CRATES_TOKEN: ${{ secrets.CRATES_TOKEN }}