_pr-create.yml

name: Create pull request to branch

on:
  workflow_call:
    inputs:
      head:
        type: string
        default: ${{ github.ref_name }}
      base:
        required: true
        type: string

env:
  GH_TOKEN: ${{ github.token }}
  HEAD: ${{ inputs.head }}
  BASE: ${{ inputs.base }}

jobs:
  create-pr:
    runs-on: ubuntu-latest
    outputs:
      pr_number: ${{ steps.pr-number.outputs.pull_request_number }}

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Check for existing PR
        id: check-pr
        run: |
          PR=$(gh pr list --base ${BASE} --head ${HEAD} --json number --jq '.[0].number')
          echo "::set-output name=pr_exists::$PR"

      - name: Create pull request
        if: steps.check-pr.outputs.pr_exists == ''
        run: |
          gh pr create \
            --label "autogenerated" \
            --base ${BASE} --head ${HEAD} \
            --title "Deploy to ${BASE}" \
            --body "Automated PR to sync changes from ${HEAD} to ${BASE}."

      - name: Get pull request number
        id: pr-number
        run: echo "pull_request_number=$(gh pr view --json number -q .number || echo "")" >> $GITHUB_OUTPUT