name: CI/CD Pipeline

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

permissions:
  contents: read

env:
  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true

jobs:
  lint:
    name: Lint & Syntax Check
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.11'

      - name: Install dependencies
        run: |
          pip install --upgrade pip
          pip install flake8
          pip install -r requirements.txt

      - name: Lint with flake8
        run: |
          # Stop build on syntax errors or undefined names
          flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics --exclude=.venv,__pycache__,models
          # Warnings (non-blocking)
          flake8 . --count --exit-zero --max-complexity=10 --max-line-length=140 --statistics --exclude=.venv,__pycache__,models

      - name: Verify imports
        run: python -c "from core.parsers import process_file; from core.analytics import run_analytics_pipeline; from core.llm_service import generate_report; print('All imports OK')"

  deploy:
    name: Deploy to Hugging Face
    runs-on: ubuntu-latest
    needs: lint
    if: github.ref == 'refs/heads/main' && github.event_name == 'push'
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
          lfs: true

      - name: Push to Hugging Face Spaces
        env:
          HF_TOKEN: ${{ secrets.HF_TOKEN }}
        run: |
          set -ex
          git config --global user.email "github-actions[bot]@users.noreply.github.com"
          git config --global user.name "github-actions[bot]"
          
          # Create a clean orphan branch with no history
          # This ensures we don't accidentally push historical binary files.
          git checkout --orphan hf-deploy
          git rm -rf --cached .
          
          # Add current files
          git add -A
          
          # Hugging Face Spaces rejects binary files in git pushes.
          # Remove binaries from staging before we make the commit.
          git rm --cached static/favicon.png || true
          git rm --cached .gitattributes || true
          
          git commit -m "deploy: HF sync (Run $GITHUB_RUN_NUMBER)"
          
          # Use a dedicated remote for Hugging Face
          git remote add hf https://rixxabh:${{ secrets.HF_TOKEN }}@huggingface.co/spaces/rixxabh/the-algorithm
          
          echo "Initiating forced push to Hugging Face Space..."
          git push --force hf hf-deploy:main

      - name: Monitor Deployment Status
        env:
          HF_TOKEN: ${{ secrets.HF_TOKEN }}
        run: |
          SPACE_ID="rixxabh/the-algorithm"
          echo "Monitoring deployment for $SPACE_ID..."
          
          # Poll every 15 seconds for up to 120 times (30 minutes)
          for i in {1..120}; do
            RESPONSE=$(curl -s https://huggingface.co/api/spaces/$SPACE_ID)
            STATE=$(echo $RESPONSE | jq -r '.runtime.stage' | tr '[:lower:]' '[:upper:]')
            
            echo "Attempt $i: Current HF Space State: $STATE"
            
            case $STATE in
              "RUNNING")
                echo "✅ Deployment Successful! Space is live."
                exit 0
                ;;
              "BUILDING"|"RUNNING_BUILDING"|"STARTING"|"RUNNING_APP_STARTING"|"INITIALIZING"|"QUEUED")
                echo "...waiting for deployment to complete..."
                sleep 15
                ;;
              *)
                echo "❌ Deployment failed or unexpected state: $STATE"
                echo "Fetching Build Logs (10s snapshot)..."
                timeout 10s curl -s -N -H "Authorization: Bearer $HF_TOKEN" https://huggingface.co/api/spaces/$SPACE_ID/logs/build | tail -n 50 || true
                echo ""
                echo "Fetching Container Logs (10s snapshot)..."
                timeout 10s curl -s -N -H "Authorization: Bearer $HF_TOKEN" https://huggingface.co/api/spaces/$SPACE_ID/logs/run | tail -n 50 || true
                exit 1
                ;;
            esac
          done
          
          echo "⚠️ Deployment timed out after 30 minutes."
          exit 1