# Multi-stage build for Python backend
# Stage 1: Base with system dependencies and Python packages

FROM python:3.11-slim as base

# Set working directory
WORKDIR /app

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

# Copy requirements files
COPY requirements.txt .

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

# Stage 2: Development environment
FROM base as development

# Install development dependencies
COPY requirements-dev.txt .
RUN pip install --no-cache-dir -r requirements-dev.txt

# Copy application code
COPY . .

# Expose port
EXPOSE 8048

# Development command (with hot reload)
CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8048", "--reload"]

# Stage 3: Production environment
FROM base as production

# Copy application code only (no dev dependencies)
COPY . .

# Create non-root user for security
RUN useradd -m -u 1000 appuser && \
    chown -R appuser:appuser /app
USER appuser

# Expose port
EXPOSE 8048

# Production command with multiple workers
CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8048", "--workers", "4"]