# CARLA Environment - Real Mode (Client for External CARLA Server)
# Connects to an external CARLA 0.9.x server
# Lighter weight alternative to bundling CARLA in the container
#
# Requirements:
#   - External CARLA 0.9.x server running (accessible via CARLA_HOST:CARLA_PORT)
#   - GPU recommended for CARLA server (not this container)
#
# Usage:
#   docker build -t carla-env-real:latest -f server/Dockerfile.real .
#   docker run -p 8000:8000 \
#     -e CARLA_HOST=your-carla-server.com \
#     -e CARLA_PORT=2000 \
#     carla-env-real:latest

FROM python:3.11-slim

# Install system dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    curl \
    ca-certificates \
    git \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Install OpenEnv core from GitHub
RUN pip install --no-cache-dir git+https://github.com/huggingface/OpenEnv.git

# Copy and install environment dependencies
COPY server/requirements.txt /tmp/requirements.txt
RUN pip install --no-cache-dir -r /tmp/requirements.txt && rm /tmp/requirements.txt

# Install CARLA Python client (0.10.0 with UE5, compatible with CARLA 0.10.x servers)
# Uses carla-ue5-api package from PyPI (MIT license, import carla still works)
RUN pip install --no-cache-dir carla-ue5-api==0.10.0

# Copy CARLA environment code
COPY . /app/carla_env/

# Create non-root user
RUN useradd -m -u 1000 -s /bin/bash carla \
    && chown -R carla:carla /app

# Set Python path
ENV PYTHONPATH=/app:$PYTHONPATH

# Environment variables for REAL mode
ENV CARLA_MODE=real
ENV CARLA_SCENARIO=trolley_saves
ENV CARLA_HOST=localhost
ENV CARLA_PORT=2000

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=30s --retries=3 \
    CMD curl -f http://localhost:8000/health || exit 1

EXPOSE 8000

USER carla

# Run server (expects external CARLA server at CARLA_HOST:CARLA_PORT)
CMD ["uvicorn", "carla_env.server.app:app", "--host", "0.0.0.0", "--port", "8000"]