# ---- Build stage ----
FROM python:3.12-slim AS builder

WORKDIR /app

# Install dependencies in a venv
COPY requirements.txt .
RUN python -m venv /opt/venv && \
    /opt/venv/bin/pip install --no-cache-dir -r requirements.txt

# ---- Runtime stage ----
FROM python:3.12-slim AS runtime

WORKDIR /app

# Copy virtualenv from builder
COPY --from=builder /opt/venv /opt/venv
ENV PATH="/opt/venv/bin:$PATH"

# Copy application code
COPY app/ ./app/

# Create data dir for SQLite
RUN mkdir -p /app/data && chmod 777 /app/data

EXPOSE 8000

HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
    CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:8000/api/health')" || exit 1

CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]