FROM python:3.12-slim

WORKDIR /app

# Install system dependencies needed for OpenCV, PIL, and PyTorch
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    libgl1 \
    libglib2.0-0 \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Copy dependency specifications
COPY requirements.txt ./
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir -r requirements.txt && \
    pip install --no-cache-dir torch torchvision --index-url https://download.pytorch.org/whl/cpu && \
    pip install --no-cache-dir open_clip_torch google-genai pillow numpy

# Copy backend code
COPY . /app/backend
WORKDIR /app/backend

ENV PYTHONUNBUFFERED=1
ENV PORT=8000

EXPOSE 8000

CMD ["sh", "-c", "uvicorn main:app --host 0.0.0.0 --port ${PORT:-8000}"]