merge_on_merge.yml

name: Merge on merge

on:
  # Don't use "pull_request" it won't have access to GITHUB_TOKEN on forks
  pull_request_target:
  push:
    branches: [main]

permissions:
  # Add contents write permission to allow commits
  contents: write
  # Add pull-requests write permission to allow commenting
  pull-requests: write

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v3
        with:
          # Need to specify ref for pull_request_target events
          ref: ${{ github.event.pull_request.head.sha }}

      - uses: narze/merge_on_merge@main
        if: ${{ github.event_name == 'pull_request_target' }}
        with:
          mode: "preview"
          input_path: "input"
          base: "data.json"
          merge_json_path: "path.to.entries"
          output: "data.json"
          processed_path: "processed"
          repo: ${{ github.event.pull_request.repository.name }}

      - uses: narze/merge_on_merge@main
        if: ${{ github.event_name == 'push' }}
        with:
          mode: "commit"
          input_path: "input"
          base: "data.json"
          merge_json_path: "path.to.entries"
          output: "data.json"
          processed_path: "processed"