# ==============================================================================
# CropAI Hugging Face Spaces Production Dockerfile
# Optimized for Hugging Face Spaces Free Tier (2 vCPU, 16 GB RAM, Port 7860)
# User UID 1000 required by Hugging Face Spaces security sandbox
# ==============================================================================

FROM python:3.11-slim

# Create Hugging Face default non-root user (UID 1000)
RUN useradd -m -u 1000 user
WORKDIR /app

ENV PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1 \
    PORT=7860 \
    HOST=0.0.0.0 \
    APP_ENV=production

# Install OS libraries for Pillow and native builds
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    libjpeg-dev \
    zlib1g-dev \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Install Python packages
COPY backend/requirements.txt /app/requirements.txt
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir -r /app/requirements.txt

# Copy entire backend source code
COPY backend /app/backend

# Grant ownership to non-root user
RUN chown -R user:user /app
USER user

EXPOSE 7860

# Healthcheck
HEALTHCHECK --interval=30s --timeout=10s --start-period=15s --retries=3 \
  CMD curl -f http://localhost:7860/health || exit 1

# Start FastAPI application on Port 7860
CMD ["uvicorn", "backend.main:app", "--host", "0.0.0.0", "--port", "7860"]