# ---- Builder stage ----
FROM python:3.12-slim AS builder
WORKDIR /app

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

# ---- Runtime stage ----
FROM python:3.12-slim
WORKDIR /app

# Copy installed packages from builder
COPY --from=builder /usr/local/lib/python3.12/site-packages /usr/local/lib/python3.12/site-packages
COPY --from=builder /usr/local/bin /usr/local/bin

# Copy application code
COPY app ./app

# Create data directory for SQLite and other persistent data
RUN mkdir -p /app/data

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

# Add healthcheck with longer start period for initialization
HEALTHCHECK --interval=10s --timeout=5s --start-period=40s --retries=3 \
    CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:8000/health').read()" || exit 1

EXPOSE 8000

# Run with production settings
CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000", "--proxy-headers", "--forwarded-allow-ips", "*"]