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

# Set working directory
WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc \
    g++ \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements first (better caching)
COPY requirements.txt .

# Install Python dependencies
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir -r requirements.txt

# Pre-download the model (optional, saves time on first run)
RUN python -c "from sentence_transformers import SentenceTransformer; SentenceTransformer('paraphrase-MiniLM-L3-v2')"

# Copy the rest of the application
COPY . .

# Create directories
RUN mkdir -p uploads document_store

# Expose port for HuggingFace
EXPOSE 7860

# Set environment variables
ENV PYTHONUNBUFFERED=1
ENV FLASK_ENV=production
ENV PORT=7860

# Run the application
CMD ["python", "app.py"]