name: Sync Merged-Downstream with Docmost Upstream Main

on:
  schedule:
    - cron: '0 0 * * *' # Run daily at midnight UTC

jobs:
  sync:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout repo
      uses: actions/checkout@v2
      with:
        fetch-depth: 0 # Fetch all history to detect changes properly

    - name: Set up git
      run: |
        git config --global user.name "Shadowfita"
        git config --global user.email "www.ryan.palmer@hotmail.com"

    - name: Fetch upstream
      run: |
        git remote add upstream https://github.com/docmost/docmost.git
        git fetch upstream

    - name: Check if upstream has changes
      id: check_changes
      run: |
        UPSTREAM_DIFF=$(git diff --name-only upstream/main)
        if [ -z "$UPSTREAM_DIFF" ]; then
          echo "No changes in upstream main branch."
          echo "::set-output name=changes::false"
        else
          echo "Changes detected in upstream main branch."
          echo "::set-output name=changes::true"
        fi

    - name: Merge upstream/main into Merged-Downstream
      if: steps.check_changes.outputs.changes == 'true'
      run: |
        git checkout Merged-Downstream
        git merge upstream/main

    - name: Push changes to Merged-Downstream
      if: steps.check_changes.outputs.changes == 'true'
      run: |
        git push origin Merged-Downstream