FROM python:3.11-slim

ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    HF_HOME=/app/.cache/huggingface \
    TRANSFORMERS_CACHE=/app/.cache/huggingface

WORKDIR /app

RUN apt-get update && apt-get install -y --no-install-recommends \
    libgl1 libglib2.0-0 curl \
    && rm -rf /var/lib/apt/lists/*

COPY server/requirements.txt .
RUN pip install --upgrade pip setuptools wheel
RUN pip install --no-cache-dir --no-build-isolation -r requirements.txt

COPY . .

RUN mkdir -p /app/.cache/huggingface

# Pre-download deepfake model to avoid runtime delays
RUN python -c "from transformers import pipeline; pipeline('image-classification', model='dima806/deepfake_vs_real_image_detection', device=-1)" 2>&1 || echo "Model download optional"

EXPOSE 7860

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