FROM python:3.10-slim

# poppler-utils  → pdf2image (PDF rendering)
# libreoffice    → convert Word/PPT/ODT to PDF
# libgl1         → OpenCV dependency used by Surya
RUN apt-get update && apt-get install -y --no-install-recommends \
    poppler-utils \
    libreoffice \
    libgl1 \
    libglib2.0-0 \
    libsm6 \
    libxext6 \
    libxrender-dev \
    && rm -rf /var/lib/apt/lists/*

# Non-root user (HF Spaces requirement)
RUN useradd -m -u 1000 user
USER user
ENV HOME=/home/user PATH=/home/user/.local/bin:$PATH

WORKDIR /home/user/app

COPY --chown=user requirements.txt .
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir -r requirements.txt

COPY --chown=user app.py .

# Pre-download model weights at build time so cold starts are fast
RUN python -c "\
from surya.foundation import FoundationPredictor; \
from surya.recognition import RecognitionPredictor; \
from surya.detection import DetectionPredictor; \
f = FoundationPredictor(); \
RecognitionPredictor(f); \
DetectionPredictor(); \
print('Models pre-downloaded.') \
"

EXPOSE 7860
CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860", "--workers", "1"]