# Copyright 2023 The Cobalt Authors. All Rights Reserved.
#
# 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.

# Usage: Go to
# https://https://github.com/youtube/cobalt/actions/workflows/manual-cherry-pick.yaml
# and click "Run Workflow." Leave "Use Workflow From" set to "main", then
# input the branch name and paste the cherry-pick commit and click Run. A PR
# will be created.

name: Release Branch Cherrypick
on:
  workflow_dispatch:
    inputs:
      # We use this instead of the "run on branch" argument because GitHub looks
      # on that branch for a workflow.yml file, and we'd have to cherry-pick
      # this file into those branches.
      release_branch:
        description: 'Release branch name (e.g. 23.lts.1+)'
        required: true
        type: string
      git_commit:
        description: 'Git commit to cherry-pick'
        required: true
        type: string

jobs:
  cherrypick:
    name: Cherrypick to ${{ github.event.inputs.release_branch}} - ${{ github.event.inputs.git_commit }}
    runs-on: ubuntu-latest
    env:
      ACCESS_TOKEN: ${{ secrets.CHERRY_PICK_TOKEN }}
      RELEASE_BRANCH: ${{ github.event.inputs.release_branch }}
      COMMIT_HASH: ${{ github.event.inputs.git_commit }}
      REPOSITORY: ${{ github.repository }}
      GITHUB_REF: ${{ github.ref }}
    steps:
    - name: Checkout code
      uses: kaidokert/checkout@v3.5.999
      with:
        ref: ${{ env.RELEASE_BRANCH }}
        persist-credentials: false
    - name: Get some helpful info for formatting
      id: cherrypick
      run: |
          git config --global user.name "GitHub Release Automation"
          git config --global user.email "github@google.com"
          git fetch origin $GITHUB_REF
          git cherry-pick -x $COMMIT_HASH
          echo "SHORTSHA=$(git log -1 $COMMIT_HASH --format="%h")" >> "$GITHUB_OUTPUT"
          echo "TITLE=$(git log -1 $COMMIT_HASH --format="%s")" >> "$GITHUB_OUTPUT"
    - name: Create Pull Request with changes
      uses: peter-evans/create-pull-request@2b011faafdcbc9ceb11414d64d0573f37c774b04 # v4.2.3
      with:
        title: '${{ env.RELEASE_BRANCH }} cherry-pick: ${{ steps.cherrypick.outputs.SHORTSHA }} "${{ steps.cherrypick.outputs.TITLE }}"'
        committer: GitHub Release Automation <github@google.com>
        token: ${{ secrets.CHERRY_PICK_TOKEN }}
        base: ${{ env.RELEASE_BRANCH }}
        branch: ${{ env.RELEASE_BRANCH }}-${{ steps.cherrypick.outputs.SHORTSHA }}
        reviewers: ${{ github.actor }}
        body: |
          Refer to the original commit: https://github.com/${{ github.repository }}/commit/${{ github.event.inputs.git_commit }}