# Multi-stage build for NullAI Phi-4 Knowledge System
# Optimized for HuggingFace Spaces deployment

# Stage 1: Build frontend
FROM node:18-alpine AS frontend-builder

WORKDIR /app/frontend

# Copy package files
COPY frontend/package*.json ./

# Install dependencies (including devDependencies for build tools like TypeScript)
RUN npm ci

# Add execute permissions to fix build issues on some platforms
RUN chmod +x /app/frontend/node_modules/.bin/tsc /app/frontend/node_modules/.bin/vite

# Copy frontend source
COPY frontend/ ./

# Build frontend
RUN npm run build

# Stage 2: Python backend
FROM python:3.11-slim

LABEL maintainer="Kodai Motonishi <kodai820820@gmail.com>"
LABEL description="NullAI Phi-4 14B Knowledge Management System"

WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y \
    gcc \
    g++ \
    make \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Copy backend requirements
COPY backend/requirements.txt ./backend/

# Install Python dependencies
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir -r backend/requirements.txt

# Copy backend code
COPY backend/ ./backend/

# Copy null_ai module
COPY null_ai/ ./null_ai/

# Copy frontend build from previous stage
COPY --from=frontend-builder /app/frontend/dist ./frontend/dist

# Copy configuration files
COPY models_config.json domains_config.json null_ai_config.json ./

# Create default config files if they don't exist
RUN if [ ! -f models_config.json ]; then \
    echo '{"models": [{"model_id": "nullai", "display_name": "NullAI", "provider": "huggingface", "model_name": "kofdai/nullai-phi-4-14b-v2", "max_tokens": 4096, "temperature": 0.7, "timeout": 120, "is_default": true, "supported_domains": ["medical", "general"]}]}' > models_config.json; \
    fi && \
    if [ ! -f domains_config.json ]; then \
    echo '{"domains": [{"domain_id": "general", "display_name": "General", "description": "General knowledge", "default_model_id": "nullai"}]}' > domains_config.json; \
    fi && \
    if [ ! -f null_ai_config.json ]; then \
    echo '{"active_domain_id": "general", "main_db_path": "data/nullai_knowledge.iath", "db_provider": "iath"}' > null_ai_config.json; \
    fi

# Copy utility scripts
COPY db_manager.py inference_engine_unified.py runner_engine.py ./

# Copy import tools
COPY import_iath.py batch_import_iath.sh ./
COPY hot_cache.py ./

# Create necessary directories
RUN mkdir -p /app/data /app/uploads

# Set environment variables for HuggingFace Spaces
ENV PYTHONPATH=/app
ENV PYTHONUNBUFFERED=1
ENV HOST=0.0.0.0
ENV PORT=7860

# Database configuration
ENV DATABASE_URL=sqlite:////app/data/nullai_knowledge.db

# Security settings
ENV SECRET_KEY=changeme-in-production

# CORS settings (will be updated in Spaces)
ENV CORS_ORIGINS='["https://kofdai-nullai-knowledge-system.hf.space"]'

# Expose port (HuggingFace Spaces standard)
EXPOSE 7860

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=10s --retries=3 \
    CMD curl -f http://localhost:7860/api/system/health || exit 1

# Initialize database and start application
CMD python backend/create_db.py && \
    uvicorn backend.app.main:app \
    --host 0.0.0.0 \
    --port 7860 \
    --log-level info