# Use Python 3.11 slim as base image
FROM python:3.11-slim as builder

# Set working directory
WORKDIR /app

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

# Install Python dependencies
COPY requirements.txt .
RUN pip wheel --no-cache-dir --no-deps --wheel-dir /app/wheels -r requirements.txt

# Final stage
FROM python:3.11-slim

# Create non-root user
RUN useradd -m appuser

# Set working directory
WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y \
    libpq5 \
    && rm -rf /var/lib/apt/lists/*

# Copy wheels from builder stage
COPY --from=builder /app/wheels /wheels
COPY --from=builder /app/requirements.txt .

# Install Python packages
RUN pip install --no-cache /wheels/*

# Copy application code
COPY ./app app/
COPY ./alembic.ini .
COPY ./alembic alembic/

# Create necessary directories with proper permissions
RUN mkdir -p /app/logs /app/uploads/images /app/uploads/documents /app/backups && \
    chown -R appuser:appuser /app

# Switch to non-root user
USER appuser

# Set environment variables
ENV PYTHONPATH=/app \
    PYTHONUNBUFFERED=1

# Expose port required by Hugging Face
EXPOSE 7860

# Start the application with uvicorn on port 7860
CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "7860"]