release_rc_python.yml

# Copyright 2026 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# SPDX-License-Identifier: Apache-2.0

name: Release Python RC

on:
  workflow_dispatch:
    inputs:
      target_version:
        description: Target version (e.g., 0.5.2)
        type: string
        required: true

permissions:
  contents: write

jobs:
  release_rc:
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - uses: actions/checkout@fbc6f3992d24b796d5a048ff273f7fcc4a7b6c09 # v5
        with:
          token: ${{ secrets.GENKIT_RELEASER_GITHUB_TOKEN }}
          fetch-depth: 0

      - name: Pull latest & fetch tags
        run: git pull origin main && git fetch --tags

      - uses: astral-sh/setup-uv@d4b2f3b6ecc6e67c4457f6d3e41ec42d3d0fcb86 # v5
        with:
          enable-cache: true
          python-version: "3.12"
          version: "0.6.6"

      - name: Create release branch & bump version
        id: rc
        env:
          TARGET_VERSION: ${{ inputs.target_version }}
        run: |
          set -e
          TARGET="$TARGET_VERSION"
          [[ "$TARGET" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]] || { echo "Error: target_version must be X.Y.Z"; exit 1; }
          EXISTING=$(git tag -l "v${TARGET}-rc.*" 2>/dev/null | sed -n 's/.*-rc\.\([0-9]*\)$/\1/p' | sort -n | tail -1)
          RC_NUM=$((${EXISTING:-0} + 1))
          NEW="${TARGET}-rc.${RC_NUM}"
          BRANCH="release/${NEW}"
          echo "new=${NEW}" >> $GITHUB_OUTPUT
          CUR=$(grep '^version = ' packages/genkit/pyproject.toml | cut -d'"' -f2)
          git config user.email "genkit-releaser@google.com" && git config user.name "genkit-releaser"
          git checkout -b "${BRANCH}"
          cd .
          for f in packages/genkit/pyproject.toml packages/*/pyproject.toml; do
            [ -f "$f" ] && grep -q "version = \"$CUR\"" "$f" && sed -i "s/version = \"$CUR\"/version = \"$NEW\"/" "$f"
          done
          uv lock && cd ..
          git add .
          git diff --staged --quiet && { echo "::error::No version changes - $CUR may not match pyproject.toml files"; exit 1; }
          git commit -m "chore: bump version to $NEW"
          git push origin HEAD:"refs/heads/${BRANCH}"

      - name: Create tag & GitHub release
        env:
          GH_TOKEN: ${{ secrets.GENKIT_RELEASER_GITHUB_TOKEN }}
          RC_NEW: ${{ steps.rc.outputs.new }}
        run: gh release create "v${RC_NEW}" --target "release/${RC_NEW}" --title "Genkit Python SDK v${RC_NEW}" --notes "Release candidate." --prerelease