prepare-release.yml

name: Prepare Release

on:
  workflow_dispatch:
    inputs:
      version_bump:
        description: 'Version bump type'
        required: true
        default: 'patch'
        type: 'choice'
        options:
          - patch
          - minor
          - major
      custom_version:
        description: 'Custom version (optional, overrides version_bump if provided)'
        required: false
        type: 'string'
      release_notes:
        description: 'Additional notes for the GitHub release'
        required: false
        type: 'string'

jobs:
  prepare-release:
    name: Prepare Release PR
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: write
    steps:
      - name: Checkout code
        uses: actions/checkout@v7
        with:
          fetch-depth: 0
          token: ${{ secrets.GITHUB_TOKEN }}
      - uses: ./.github/actions/free-disk-space
      - name: Set up Rust
        uses: dtolnay/rust-toolchain@stable
      - uses: Swatinem/rust-cache@v2

      - name: Install cargo-release
        run: cargo install cargo-release

      - name: Configure Git
        run: |
          git config --local user.email "github-actions[bot]@users.noreply.github.com"
          git config --local user.name "github-actions[bot]"

      - name: Execute version bump
        id: bump
        run: |
          LEVEL="${{ github.event.inputs.version_bump }}"
          CUSTOM_VERSION="${{ github.event.inputs.custom_version }}"

          if [ -n "$CUSTOM_VERSION" ]; then
            cargo release "$CUSTOM_VERSION" --execute --no-confirm --no-push --no-tag --no-publish
            echo "new_version=$CUSTOM_VERSION" >> $GITHUB_OUTPUT
          else
            cargo release $LEVEL --execute --no-confirm --no-push --no-tag --no-publish
            NEW_VERSION=$(grep -m 1 'version = ' Cargo.toml | sed 's/version = "\(.*\)"/\1/')
            echo "new_version=$NEW_VERSION" >> $GITHUB_OUTPUT
          fi

      - name: Create Pull Request
        uses: peter-evans/create-pull-request@v8
        with:
          token: ${{ secrets.PAT_TOKEN }}
          branch: release/v${{ steps.bump.outputs.new_version }}
          title: "chore: release v${{ steps.bump.outputs.new_version }}"
          body: |
            ## Release v${{ steps.bump.outputs.new_version }}

            This PR bumps all workspace crate versions to `${{ steps.bump.outputs.new_version }}`.

            ${{ github.event.inputs.release_notes }}

            ---

            **On merge**, the `publish.yml` workflow will automatically:
            1. Publish all crates to crates.io
            2. Create a GitHub Release with tag `v${{ steps.bump.outputs.new_version }}`
          commit-message: "chore: release v${{ steps.bump.outputs.new_version }}"
          labels: release
          delete-branch: true