# Use Python 3.11 slim image as base
FROM python:3.11-slim

# Set working directory
WORKDIR /app

# Set environment variables
ENV PYTHONUNBUFFERED=1
ENV PYTHONDONTWRITEBYTECODE=1

# Install system dependencies for OpenCV, QR code processing, and other requirements
RUN apt-get update && apt-get install -y \
    libzbar0 \
    libzbar-dev \
    libopencv-dev \
    python3-opencv \
    libglib2.0-0 \
    libsm6 \
    libxext6 \
    libxrender-dev \
    libgomp1 \
    libgtk-3-0 \
    libgdk-pixbuf2.0-0 \
    libpango-1.0-0 \
    libcairo2 \
    libfontconfig1 \
    libfreetype6 \
    libx11-6 \
    wget \
    curl \
    build-essential \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements file
COPY requirements.txt .

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

# Copy application files
COPY app.py .

# Create directory for QR temporal data (fallback storage)
RUN mkdir -p qr_temporal_data

# Expose the port that Gradio runs on
EXPOSE 7860

# Add health check
HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:7860 || exit 1

# Set default environment variables (can be overridden)
ENV MONGODB_DATABASE=qrcodetcp
ENV MONGODB_COLLECTION=content_snapshots
ENV MAX_CONTENT_LENGTH=2000

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