FROM python:3.11-slim

WORKDIR /app

# Install system deps for MNE/scipy
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc g++ && \
    rm -rf /var/lib/apt/lists/*

COPY requirements.txt .

# Install CPU-only PyTorch first (saves ~1.5GB vs full torch)
RUN pip install --no-cache-dir torch==2.4.0 --index-url https://download.pytorch.org/whl/cpu

# Install remaining deps
RUN pip install --no-cache-dir -r requirements.txt

COPY . .

# Train model if weights don't exist
RUN if [ ! -f model_weights.pt ]; then python train.py --epochs 100 --n_synthetic 5000 --output model_weights.pt; fi

EXPOSE 7860

CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]