cd.yml

name: Rust

on:
  workflow_run:
    workflows: ["Test"]
    types:
      - completed

permissions:
  contents: write

env:
  CARGO_TERM_COLOR: always

jobs:
  build:
    if: >-
      github.event.workflow_run.conclusion == 'success' &&
      github.event.workflow_run.event == 'push' &&
      github.event.workflow_run.head_branch == 'main'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Set up Rust
        uses: actions-rust-lang/setup-rust-toolchain@v1
        with:
          toolchain: stable
          components: rustfmt, clippy

      - name: Get current version
        id: current
        run: |
          ver=$(grep '^version' Cargo.toml | head -1 | sed 's/version = "\(.*\)"/\1/')
          echo "version=$ver" >> $GITHUB_OUTPUT

      - name: Get previous version from main
        id: previous
        run: |
          prev_ver=$(git show origin/main:Cargo.toml | grep '^version' | head -1 | sed 's/version = "\(.*\)"/\1/')
          echo "version=$prev_ver" >> $GITHUB_OUTPUT

      - name: Check for version change
        id: changed
        run: |
          if [ "${{ steps.current.outputs.version }}" != "${{ steps.previous.outputs.version }}" ]; then
          echo "changed=true" >> $GITHUB_OUTPUT
          else
          echo "changed=false" >> $GITHUB_OUTPUT
          fi

      - name: Publish to crates.io
        if: steps.changed.outputs.changed == 'true'
        env:
          CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}
        run: |
          cargo publish --allow-dirty

      - name: Tag and push version
        if: steps.changed.outputs.changed == 'true'
        env:
          TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git tag "v${{ steps.current.outputs.version }}"
          git push origin "v${{ steps.current.outputs.version }}"