FROM python:3.12-slim

WORKDIR /app

# ------------------------
# Environment
# ------------------------

ENV PYTHONUNBUFFERED=1
ENV PYTHONDONTWRITEBYTECODE=1

# HuggingFace cache
ENV HF_HOME=/tmp/.cache
ENV TRANSFORMERS_CACHE=/tmp/.cache
ENV HUGGINGFACE_HUB_CACHE=/tmp/.cache

RUN mkdir -p /tmp/.cache && chmod -R 777 /tmp/.cache

# ------------------------
# System packages
# ------------------------

RUN apt-get update && apt-get install -y \
    build-essential \
    git \
    && rm -rf /var/lib/apt/lists/*

# ------------------------
# Python packages
# ------------------------

COPY requirements.txt .

RUN pip install --upgrade pip

RUN pip install --no-cache-dir -r requirements.txt

# ------------------------
# Download embedding model
# ------------------------

RUN python -c "from sentence_transformers import SentenceTransformer; SentenceTransformer('BAAI/bge-small-en-v1.5')"

# ------------------------
# Copy project
# ------------------------

COPY . .

# ------------------------
# HuggingFace Spaces
# ------------------------

EXPOSE 7860

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