publish.yml

name: Publish to crates.io

on:
  push:
    branches:
      - master
    tags:
      - 'v*'

jobs:
  publish:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2

      - name: Install Rust
        uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: stable
          override: true

      - name: Publish to crates.io
        env:
          CARGO_REGISTRY_TOKEN: ${{ secrets.CRATES_IO_TOKEN }}
        run: |
          if [[ "${{ github.ref }}" == refs/tags/* ]]; then
            # If it's a tag, publish as is
            cargo publish
          elif [[ "${{ github.ref }}" == refs/heads/master ]]; then
            # If it's a push to master, publish as a pre-release version
            VERSION=$(grep '^version =' Cargo.toml | sed -E 's/version = "(.*?)"/\1/')
            COMMIT_HASH=$(git rev-parse --short HEAD)
            NEW_VERSION="${VERSION}-pre.${COMMIT_HASH}"
            sed -i "s/^version = \".*\"/version = \"${NEW_VERSION}\"/" Cargo.toml
            CARGO_REGISTRY_TOKEN=${{ secrets.CRATES_IO_TOKEN }} cargo publish --allow-dirty
          else
            echo "Not publishing: not a push to master or a tag"
          fi