name: Sync Upstream

on:
  schedule:
    # Run weekly on Sundays at 2 AM UTC
    - cron: '0 2 * * 0'
  workflow_dispatch:
    # Allow manual triggering

jobs:
  sync:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          token: ${{ secrets.GITHUB_TOKEN }}

      - name: Configure Git
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"

      - name: Add upstream remote
        run: |
          git remote add upstream https://github.com/Dictionarry-Hub/database.git || true
          git fetch upstream

      - name: Sync from upstream stable branch
        run: |
          # Try to merge upstream changes
          git merge upstream/stable --no-edit --allow-unrelated-histories || {
            echo "Merge conflict detected, attempting auto-resolution..."

            # Keep our custom files (Micro profiles and formats)
            git checkout --ours profiles/*Micro*.yml custom_formats/*Micro*.yml regex_patterns/BONE.yml regex_patterns/GalaxyRG.yml regex_patterns/TGx.yml regex_patterns/ETHEL.yml 2>/dev/null || true

            # Keep their files for everything else
            git checkout --theirs profiles/*.yml custom_formats/*.yml regex_patterns/*.yml 2>/dev/null || true

            # Add resolved files
            git add -A

            # Complete the merge
            git commit -m "chore(sync): Merge upstream changes from Dictionarry-Hub/database" || true
          }

      - name: Push changes
        run: |
          git push origin main || git push origin master
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Create summary
        run: |
          echo "## Upstream Sync Summary" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "✅ Successfully synced from upstream repository" >> $GITHUB_STEP_SUMMARY
          echo "- Source: Dictionarry-Hub/database (stable branch)" >> $GITHUB_STEP_SUMMARY
          echo "- Custom files preserved: Micro profiles and formats" >> $GITHUB_STEP_SUMMARY