FROM nvidia/cuda:11.8.0-cudnn8-runtime-ubuntu22.04

# Set non-interactive frontend for debconf
ARG DEBIAN_FRONTEND=noninteractive

# Install Python and system dependencies
RUN apt-get update && apt-get install -y \
    python3.11 \
    python3.11-venv \
    python3-pip \
    build-essential \
    libgl1-mesa-glx \
    libglib2.0-0 \
    ffmpeg \
    tzdata \
    postgresql-client \
    libpq-dev \
    git \
    curl \
    && ln -fs /usr/share/zoneinfo/Etc/UTC /etc/localtime \
    && dpkg-reconfigure --frontend noninteractive tzdata \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

# Create a non-root user with UID 1000 (required for Hugging Face Spaces)
RUN useradd -m -u 1000 user

# Set up the user environment
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH \
    PYTHONPATH=/home/user/.local/lib/python3.11/site-packages \
    CUDA_HOME=/usr/local/cuda \
    CUDA_PATH=/usr/local/cuda \
    LD_LIBRARY_PATH=/usr/local/cuda/lib64:$LD_LIBRARY_PATH

# Create and set up working directory
WORKDIR $HOME/app

# Install Python virtual environment
RUN python3.11 -m venv $HOME/venv
ENV PATH="$HOME/venv/bin:$PATH"

# Copy requirements first (for better caching)
COPY --chown=user:user behavior_backend/requirements.txt .

# Install dependencies
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir torch torchvision torchaudio --index-url https://download.pytorch.org/whl/cu118 && \
    pip install --no-cache-dir -r requirements.txt

# Create required directories with proper ownership
RUN mkdir -p $HOME/app/static/uploads $HOME/app/static/results && \
    chown -R user:user $HOME/app

# Create data directory for persistence (if needed)
RUN mkdir -p /data && chown -R user:user /data

# Copy application code with proper ownership
COPY --chown=user:user behavior_backend/app/ ./app/
COPY --chown=user:user behavior_backend/main.py .
COPY --chown=user:user behavior_backend/.env .

# Switch to non-root user
USER user

# Expose the port that Hugging Face Spaces expects
EXPOSE 7860

# Command to run the application on the port Hugging Face expects
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]