# Use an official lightweight Python image
FROM python:3.11-slim

# System deps for llama.cpp (may require build tools)
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    git \
    wget \
    && rm -rf /var/lib/apt/lists/*

# Set workdir
WORKDIR /app

# Copy requirement first for layer caching
COPY requirements.txt ./

# Install Python deps (prefer no cache)
RUN pip install --no-cache-dir -r requirements.txt

# Copy source
COPY . .

# Environment defaults (override in HF Space settings)
ENV HOST=0.0.0.0 \
    PORT=7860 \
    LOG_LEVEL=INFO \
    LLAMA_MODEL_PATH=./models/meta-llama-3-8b.Q4_K_M.gguf \
    LLAMA_REPO_ID=psuplj/Meta-Llama-3-8B-Q4_K_M-GGUF \
    LLAMA_FILENAME=meta-llama-3-8b.Q4_K_M.gguf

# Expose port
EXPOSE 7860

# Healthcheck (simple ping)
HEALTHCHECK --interval=30s --timeout=3s --start-period=40s CMD curl -f http://localhost:7860/ || exit 1

# Entrypoint
CMD ["python", "app.py"]