# Use official slim Python image
FROM python:3.10-slim

# Set working directory
WORKDIR /app

# Install system dependencies needed for Surprise and compiling
RUN apt-get update && apt-get install -y \
    build-essential \
    curl \
    git \
    && rm -rf /var/lib/apt/lists/*

# Upgrade pip
RUN pip install --upgrade pip

# Install specific versions of numpy and cython first to avoid Surprise issues
RUN pip install numpy==1.25.0 cython==0.30.36

# Copy requirements and install
COPY requirements.txt ./
RUN pip install -r requirements.txt

# Copy source code
COPY src/ ./src/

# Optional: copy data folder if it exists
COPY data/ ./data/ 2>/dev/null || echo "No data folder found, skipping."

# Optional: copy model folder if it exists
COPY model/ ./model/ 2>/dev/null || echo "No model folder found, skipping."

# Expose Streamlit port
EXPOSE 8501

# Healthcheck for Streamlit
HEALTHCHECK CMD curl --fail http://localhost:8501/_stcore/health || exit 1

# Ensure Surprise data folder has correct permissions
RUN mkdir -p /app/surprise_data && chmod 777 /app/surprise_data
ENV SURPRISE_DATA_FOLDER=/app/surprise_data

# Entry point for Streamlit
ENTRYPOINT ["streamlit", "run", "src/app.py", "--server.port=8501", "--server.address=0.0.0.0"]