name: CI Pipeline

on:
  push:
    branches: [ "main" ]
  pull_request:
    branches: [ "main" ]

jobs:
  backend-lint:
    name: Backend Checks (Lint)
    runs-on: ubuntu-latest
    
    steps:
      - uses: actions/checkout@v4
      
      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.11"
          cache: "pip"
          
      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip
          pip install ruff
          
      - name: Lint with Ruff
        run: |
          ruff check backend/ --select=E9,F63,F7,F82
          
  frontend-build-and-deploy:
    name: Build & Deploy to HuggingFace
    needs: backend-lint
    runs-on: ubuntu-latest
    if: github.ref == 'refs/heads/main'
    
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
          lfs: true
      
      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: "20"
          
      - name: Install Frontend Dependencies
        working-directory: ./frontend
        run: npm install
        
      - name: Build Frontend
        working-directory: ./frontend
        run: npm run build
        
      - name: Push Clean Release to Hugging Face Space
        env:
          HF_TOKEN: ${{ secrets.HF_TOKEN }}
          HUGGINGFACE_TOKEN: ${{ secrets.HUGGINGFACE_TOKEN }}
          HF_SPACE: ${{ secrets.HF_SPACE }}
        run: |
          TOKEN="${HF_TOKEN:-$HUGGINGFACE_TOKEN}"
          SPACE_NAME="${HF_SPACE:-datavision-ai/Datavision}"
          
          if [ -n "$TOKEN" ]; then
            echo "🚀 Syncing clean release to Hugging Face Space: $SPACE_NAME"
            git config --global user.email "ci@datavision.ai"
            git config --global user.name "DataVision CI/CD Bot"
            git config --global lfs.allowincompletepush false
            git lfs install
            git lfs pull

            # Create clean orphan release branch without historical broken LFS pointers
            git checkout --orphan hf-release
            git reset

            # Stage current active files and built frontend assets
            git add -A
            git add -f frontend/dist 2>/dev/null || true
            git commit -m "release: clean production build for HuggingFace Space" || true

            # Setup HF remote and force push clean orphan branch to main
            git remote remove hf 2>/dev/null || true
            git remote add hf "https://user:$TOKEN@huggingface.co/spaces/$SPACE_NAME"
            git lfs push hf hf-release
            git push -f hf hf-release:main
            echo "✅ Successfully pushed clean release to Hugging Face Space: $SPACE_NAME"
          else
            echo "⚠️ Secret HF_TOKEN not set. Set HF_TOKEN in GitHub Settings -> Secrets -> Actions to auto-deploy."
          fi