name: Deploy to Hugging Face Spaces

on:
  push:
    branches: [main]
  workflow_dispatch:

jobs:
  deploy-to-hf-spaces:
    name: Deploy Backend to HF Spaces
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          lfs: true

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.x'

      - name: Install huggingface_hub
        run: pip install huggingface_hub

      - name: Login to HuggingFace
        run: hf auth login --token $HF_TOKEN
        env:
          HF_TOKEN: ${{ secrets.HF_TOKEN }}
          
      - name: Prepare deployment files
        env:
          HF_SPACE_NAME: ${{ secrets.HF_SPACE_NAME }}
        run: |
          set -e
          
          echo "Creating deployment directory..."
          mkdir -p hf-deploy

          # Copy backend and required packages
          echo "Copying backend files..."
          mkdir -p hf-deploy/apps/backend
          cp -r apps/backend/src hf-deploy/apps/backend/
          cp -r apps/backend/prisma hf-deploy/apps/backend/
          cp apps/backend/package.json hf-deploy/apps/backend/
          cp apps/backend/package-lock.json hf-deploy/apps/backend/ 2>/dev/null || true
          cp apps/backend/tsconfig.json hf-deploy/apps/backend/

          # Copy shared packages
          echo "Copying shared packages..."
          mkdir -p hf-deploy/packages/domain-types
          cp -r packages/domain-types/src hf-deploy/packages/domain-types/
          cp packages/domain-types/package.json hf-deploy/packages/domain-types/
          cp packages/domain-types/tsconfig.json hf-deploy/packages/domain-types/

          mkdir -p hf-deploy/packages/mcp-types
          cp -r packages/mcp-types/src hf-deploy/packages/mcp-types/
          cp packages/mcp-types/package.json hf-deploy/packages/mcp-types/
          cp packages/mcp-types/tsconfig.json hf-deploy/packages/mcp-types/

          # Copy root config
          echo "Copying root config..."
          cp package.json hf-deploy/
          cp package-lock.json hf-deploy/ 2>/dev/null || true
          cp tsconfig.json hf-deploy/ 2>/dev/null || true

          # Copy Dockerfile
          echo "Copying Dockerfile..."
          if [ -f scripts/hf-backend.dockerfile ]; then
            cp scripts/hf-backend.dockerfile hf-deploy/Dockerfile
          elif [ -f Dockerfile ]; then
            cp Dockerfile hf-deploy/
          fi

          # Clean unwanted files
          echo "Cleaning unwanted files..."
          find hf-deploy -name "*.pdf" -delete 2>/dev/null || true
          find hf-deploy -name "*.db*" -delete 2>/dev/null || true
          find hf-deploy -name "*.sqlite" -delete 2>/dev/null || true
          find hf-deploy -name "*.log" -delete 2>/dev/null || true
          find hf-deploy -name "node_modules" -type d -exec rm -rf {} + 2>/dev/null || true
          find hf-deploy -name "dist" -type d -exec rm -rf {} + 2>/dev/null || true

          # Create README.md
          echo "Creating README..."
          echo "---" > hf-deploy/README.md
          echo "title: WidgeTDC Cortex" >> hf-deploy/README.md
          echo "emoji: 🧠" >> hf-deploy/README.md
          echo "colorFrom: blue" >> hf-deploy/README.md
          echo "colorTo: purple" >> hf-deploy/README.md
          echo "sdk: docker" >> hf-deploy/README.md
          echo "app_port: 7860" >> hf-deploy/README.md
          echo "hardware: t4-small" >> hf-deploy/README.md
          echo "---" >> hf-deploy/README.md
          echo "" >> hf-deploy/README.md
          echo "# WidgeTDC Cortex - Neural Backend" >> hf-deploy/README.md
          echo "" >> hf-deploy/README.md
          echo "Enterprise AI backend with GPU-accelerated embeddings and MCP agents." >> hf-deploy/README.md
          echo "" >> hf-deploy/README.md
          echo "## Features" >> hf-deploy/README.md
          echo "- GPU-accelerated embeddings via sentence-transformers" >> hf-deploy/README.md
          echo "- MCP (Model Context Protocol) tool execution" >> hf-deploy/README.md
          echo "- Real-time WebSocket communication" >> hf-deploy/README.md
          echo "- Health monitoring at /health endpoint" >> hf-deploy/README.md

          # Verify structure
          echo "Verifying structure..."
          ls -la hf-deploy/
          ls -la hf-deploy/apps/backend/ || echo "Backend missing!"

      - name: Create HuggingFace Space (if not exists)
        env:
          HF_SPACE_NAME: ${{ secrets.HF_SPACE_NAME }}
        run: |
          echo "Creating/verifying Space: $HF_SPACE_NAME"
          
          # Try to create Space (will fail if exists, which is OK)
          hf repo create $HF_SPACE_NAME --type space --space_sdk docker || echo "Space already exists or creation failed - continuing..."
          
          echo "✅ Space ready"

      - name: Upload to HuggingFace Space
        env:
          HF_SPACE_NAME: ${{ secrets.HF_SPACE_NAME }}
        run: |
          set -e
          
          echo "Uploading to HuggingFace Space: $HF_SPACE_NAME"
          
          # Use HF CLI to upload entire folder
          hf upload \
            "$HF_SPACE_NAME" \
            ./hf-deploy \
            . \
            --repo-type=space \
            --commit-message="Deploy from GitHub Actions $(date +%Y-%m-%d_%H-%M-%S)" \
            || {
              echo "::error::Upload failed - check HF_TOKEN permissions and Space name"
              exit 1
            }
          
          echo "✅ Deployment successful!"
          echo "Space URL: https://huggingface.co/spaces/$HF_SPACE_NAME"
          echo "::notice::Deployment complete - Space will build Docker image (5-10 min)"