# Use Python 3.12 as base image
FROM python:3.12-slim

# Install system dependencies including OpenCV requirements
RUN apt-get update && apt-get install -y \
    curl \
    libgl1 \
    libglib2.0-0 \
    libsm6 \
    libxext6 \
    libxrender1 \
    libgomp1 \
    && rm -rf /var/lib/apt/lists/*

# Set up a new user named "user" with user ID 1000 (HF Spaces requirement)
RUN useradd -m -u 1000 user

# Switch to the "user" user
USER user

# Set home to the user's home directory
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH

# Set the working directory to the user's home directory
WORKDIR $HOME/app

# Upgrade pip and install dependencies
RUN pip install --no-cache-dir --upgrade pip

# Copy requirements first for better Docker layer caching
# Note: For HF Spaces deployment, files are in root. For local builds, adjust paths as needed.
COPY --chown=user requirements.txt $HOME/app/

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

# Copy the source code
# Note: For HF Spaces, files are synced to root directory
COPY --chown=user src/ $HOME/app/src/
COPY --chown=user models/ $HOME/app/models/

# Copy the main entry point
COPY --chown=user main.py $HOME/app/

# Expose the port that the app runs on (HF Spaces default is 7860)
EXPOSE 7860

# Set environment variables
ENV PYTHONPATH=$HOME/app
ENV PORT=7860

# Health check to ensure the API is running
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:7860/health || exit 1

# Start the application directly
CMD ["python", "main.py"]