# Multi-stage build for LangChain Learning Kit
FROM python:3.11-slim as base

# Set environment variables
ENV PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1 \
    PIP_NO_CACHE_DIR=1 \
    PIP_DISABLE_PIP_VERSION_CHECK=1

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

# Set working directory
WORKDIR /app

# Copy requirements
COPY requirements.txt .

# Install Python dependencies
RUN pip install --no-cache-dir -r requirements.txt


# Production stage
FROM base as production

# Copy application code
COPY src/ ./src/
COPY scripts/ ./scripts/

# Create directories for FAISS indexes
RUN mkdir -p /app/data/faiss_indexes

# Expose port
EXPOSE 8000

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD python -c "import requests; requests.get('http://localhost:8000/health')"

# Run application
CMD ["python", "-m", "uvicorn", "src.main:app", "--host", "0.0.0.0", "--port", "8000"]


# Development stage
FROM base as development

# Install development dependencies
RUN pip install --no-cache-dir \
    pytest>=7.4.0 \
    pytest-asyncio>=0.21.0 \
    pytest-cov>=4.1.0 \
    black>=23.7.0 \
    flake8>=6.1.0 \
    mypy>=1.5.0

# Copy application code
COPY . .

# Expose port
EXPOSE 8000

# Run application with reload
CMD ["python", "-m", "uvicorn", "src.main:app", "--host", "0.0.0.0", "--port", "8000", "--reload"]