FROM python:3.10-slim

# 1. Install system dependencies for PyMuPDF and basic building
RUN apt-get update && apt-get install -y \
    build-essential \
    libgl1 \
    libglib2.0-0 \
    wget \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /code

# 2. Install llama-cpp-python using a PRE-COMPILED wheel optimized for HF Spaces
# This is a direct download link that skips the 'Building wheel' process entirely
RUN pip install --no-cache-dir \
    https://huggingface.co/Luigi/llama-cpp-python-wheels-hf-spaces-free-cpu/resolve/main/llama_cpp_python-0.3.16-cp310-cp310-linux_x86_64.whl

# 3. Copy requirements and install (Ensure llama-cpp-python is NOT in your requirements.txt)
COPY ./requirements.txt /code/requirements.txt
RUN pip install --no-cache-dir -r /code/requirements.txt

COPY . .

# 4. Permissions and Cache for the model
RUN mkdir -p /code/cache && chmod 777 /code/cache
ENV HF_HOME=/code/cache
ENV TRANSFORMERS_CACHE=/code/cache

# Start the application
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]