FROM node:18-alpine AS frontend-builder

# Build frontend
WORKDIR /app/frontend
COPY frontend/package*.json ./
RUN npm ci

COPY frontend/ ./
# Set environment for single container (use relative paths)
ENV NEXT_PUBLIC_API_URL=""
RUN npm run build

# Main container with Python and built frontend
FROM python:3.11-slim

WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y \
    gcc \
    g++ \
    libldap2-dev \
    libsasl2-dev \
    libssl-dev \
    default-libmysqlclient-dev \
    pkg-config \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Copy and install Python dependencies
COPY backend/requirements.txt ./
RUN pip install --no-cache-dir -r requirements.txt

# Copy backend application
COPY backend/ ./

# Copy built frontend from builder stage
COPY --from=frontend-builder /app/frontend/out ./frontend/out

# Create necessary directories
RUN mkdir -p logs uploads

# Set environment variables
ENV FLASK_APP=app.py
ENV PYTHONUNBUFFERED=1
ENV FLASK_ENV=production

# Expose only one port
EXPOSE 12011

# Health check
HEALTHCHECK --interval=30s --timeout=10s --retries=3 --start-period=40s \
  CMD curl -f http://localhost:12011/api/health/ || exit 1

# Run with Gunicorn for production (supports 200+ users)
CMD ["gunicorn", "--bind", "0.0.0.0:12011", "--worker-class", "gthread", "--workers", "4", "--threads", "8", "--timeout", "120", "--keep-alive", "10", "--max-requests", "2000", "--max-requests-jitter", "200", "--forwarded-allow-ips", "*", "--access-logfile", "-", "app:app"]