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

# Set working directory
WORKDIR /app

# Install system dependencies needed for PDF generation
RUN apt-get update && apt-get install -y \
    build-essential \
    libpoppler-cpp-dev \
    pkg-config \
    fonts-dejavu-core \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements first (for Docker layer caching)
COPY requirements.txt .

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

# Copy all app files
COPY . .

# Create a writable directory for temporary files and PDF output
RUN mkdir -p /app/tmp && chmod 777 /app/tmp
RUN chmod 777 /app

# Expose Streamlit default port
EXPOSE 7860

# Set environment variables for Streamlit
ENV STREAMLIT_SERVER_PORT=7860
ENV STREAMLIT_SERVER_ADDRESS=0.0.0.0
ENV STREAMLIT_SERVER_HEADLESS=true
ENV STREAMLIT_BROWSER_GATHER_USAGE_STATS=false

# ✅ Fix for 403 file upload error on HF Spaces
ENV STREAMLIT_SERVER_ENABLE_CORS=false
ENV STREAMLIT_SERVER_ENABLE_XSRF_PROTECTION=false

# Run the app via start.sh
CMD ["/bin/bash", "start.sh"]