# ─────────────────────────────────────────────────────────────────────────────
# Dockerfile — BP Monitoring Pipeline (HF Spaces deployment)
# Base: Python 3.11 slim
# Port: 7860 (HF Spaces default)
# ─────────────────────────────────────────────────────────────────────────────

FROM python:3.11-slim

# Metadata
LABEL maintainer="Data Engineering Team"
LABEL description="BP Monitoring Pipeline — FastAPI ETL #1"
LABEL version="1.0.0"

# HF Spaces requires non-root user named 'user' with UID 1000
RUN useradd -m -u 1000 user

# Set working directory
WORKDIR /app

# Install system dependencies for SciPy / asyncpg
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc \
    libpq-dev \
    && rm -rf /var/lib/apt/lists/*

# Copy dependency definitions first (layer caching)
COPY pyproject.toml ./

# Install Python dependencies (exclude GPU extras in the API container)
RUN pip install --no-cache-dir -e "." && \
    pip install --no-cache-dir uvicorn[standard]

# Copy source code
COPY src/ ./src/
COPY migrations/ ./migrations/
COPY alembic.ini ./

# Change ownership to user
RUN chown -R user:user /app

USER user

# Expose HF Spaces port
EXPOSE 7860

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=10s --retries=3 \
    CMD python -c "import httpx; httpx.get('http://localhost:7860/health').raise_for_status()"

# Start FastAPI
CMD ["uvicorn", "src.interface.api.app:create_app", "--factory", \
     "--host", "0.0.0.0", "--port", "7860", "--workers", "1"]