name: Conditional Sync Upstream, Build, and Push Docker Image

on:
  schedule:
    - cron: '0 * * * *'  # ogni ora
  workflow_dispatch:
  push:
    branches: [main]

jobs:
  sync-build-push:
    runs-on: ubuntu-latest

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

      - name: Backup files and force sync upstream
        id: sync
        run: |
          git config user.name "github-actions"
          git config user.email "actions@github.com"

          git remote get-url upstream || git remote add upstream https://github.com/UrloMythus/MammaMia.git
          git fetch upstream

          # Controlla se ci sono differenze PRIMA del reset
          if git diff --quiet HEAD upstream/main; then
            echo "Repository already up to date"
            echo "no_change=true" >> $GITHUB_OUTPUT
          else
            echo "Changes detected, proceeding with sync and build"

            backup_dir=".git/backup_files"
            mkdir -p "$backup_dir/.github/workflows"
            mkdir -p "$backup_dir/Dockerfiles"

            if [ -f config.json ]; then
              cp config.json "$backup_dir/config.json"
            else
              echo "⚠️ config.json non trovato, skipping backup"
            fi

            if [ -f update_domains.py ]; then
              cp update_domains.py "$backup_dir/update_domains.py"
            else
              echo "⚠️ update_domains.py non trovato, skipping backup"
            fi

            if [ -d .github/workflows ]; then
              cp -r .github/workflows/* "$backup_dir/.github/workflows/" || echo "⚠️ No workflows to backup"
            else
              echo "⚠️ Cartella .github/workflows non trovata, skipping backup"
            fi

            if [ -d Dockerfiles ]; then
              cp -r Dockerfiles/* "$backup_dir/Dockerfiles/" || echo "⚠️ No Dockerfiles to backup"
            else
              echo "⚠️ Cartella Dockerfiles non trovata, skipping backup"
            fi

            git checkout main || git checkout -b main
            git reset --hard upstream/main

            if [ -f "$backup_dir/config.json" ]; then
              cp "$backup_dir/config.json" config.json
            else
              echo "⚠️ File config.json non trovato nel backup, skipping restore"
            fi

            if [ -f "$backup_dir/update_domains.py" ]; then
              cp "$backup_dir/update_domains.py" update_domains.py
            else
              echo "⚠️ File update_domains.py non trovato nel backup, skipping restore"
            fi

            mkdir -p .github/workflows
            if [ -d "$backup_dir/.github/workflows" ]; then
              cp -r "$backup_dir/.github/workflows/"* .github/workflows/ || echo "⚠️ No workflows to restore"
            else
              echo "⚠️ Backup workflows folder mancante, skipping restore"
            fi

            mkdir -p Dockerfiles
            if [ -d "$backup_dir/Dockerfiles" ]; then
              cp -r "$backup_dir/Dockerfiles/"* Dockerfiles/ || echo "⚠️ No Dockerfiles to restore"
            else
              echo "⚠️ Backup Dockerfiles folder mancante, skipping restore"
            fi

            git add .
            git commit -m "Restore files after forced sync" || echo "No changes needed"
            git push origin main --force
            echo "no_change=false" >> $GITHUB_OUTPUT

            rm -rf "$backup_dir"
          fi

      - name: Check if build is needed
        run: echo "Changes detected, proceed with build."
        if: steps.sync.outputs.no_change == 'false'

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
        if: steps.sync.outputs.no_change == 'false'

      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}
        if: steps.sync.outputs.no_change == 'false'

      - name: Build and push Docker image
        uses: docker/build-push-action@v6
        with:
          context: .
          file: ./Dockerfile
          push: true
          tags: dula117/mammamia:latest
        if: steps.sync.outputs.no_change == 'false'