draft-release.yml

name: Draft Release

on:
  workflow_dispatch:
    inputs:
      bump:
        description: "Version bump type"
        required: true
        type: choice
        options:
          - patch
          - minor
          - major

permissions:
  contents: write

jobs:
  draft-release:
    name: Create Draft Release
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          ref: main
          fetch-depth: 0

      - name: Calculate next version and rc number
        id: version
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          # Find the latest official (non-rc) release
          LATEST=$(gh release list --json tagName,isPrerelease --jq '[.[] | select(.isPrerelease == false)] | .[0].tagName // empty' 2>/dev/null || true)

          if [ -z "$LATEST" ]; then
            MAJOR=0; MINOR=0; PATCH=0
          else
            VERSION="${LATEST#v}"
            MAJOR=$(echo "$VERSION" | cut -d. -f1)
            MINOR=$(echo "$VERSION" | cut -d. -f2)
            PATCH=$(echo "$VERSION" | cut -d. -f3)
          fi

          case "${{ inputs.bump }}" in
            major) MAJOR=$((MAJOR + 1)); MINOR=0; PATCH=0 ;;
            minor) MINOR=$((MINOR + 1)); PATCH=0 ;;
            patch) PATCH=$((PATCH + 1)) ;;
          esac

          NEXT="${MAJOR}.${MINOR}.${PATCH}"

          # Count existing rc tags for this version to determine next rc number
          RC_COUNT=$(gh release list --json tagName --jq "[.[] | select(.tagName | startswith(\"v${NEXT}-rc.\"))] | length" 2>/dev/null || echo "0")
          RC_NUM=$((RC_COUNT + 1))

          echo "next=$NEXT" >> $GITHUB_OUTPUT
          echo "rc=$RC_NUM" >> $GITHUB_OUTPUT
          echo "Next version: v${NEXT}-rc.${RC_NUM}"

      - name: Create tag
        run: |
          VERSION="v${{ steps.version.outputs.next }}-rc.${{ steps.version.outputs.rc }}"
          git tag "$VERSION"
          git push origin "$VERSION"

      - name: Create draft release
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          VERSION="v${{ steps.version.outputs.next }}-rc.${{ steps.version.outputs.rc }}"
          gh release create "$VERSION" \
            --draft \
            --prerelease \
            --title "$VERSION" \
            --generate-notes