# Base image
FROM python:3.11-slim

# Prevent Python from writing .pyc files and buffer stdout/stderr
ENV PYTHONDONTWRITEBYTECODE=1 \
  PYTHONUNBUFFERED=1 \
  PIP_NO_CACHE_DIR=1 \
  SDL_AUDIODRIVER=dummy

# System deps for OpenCV, audio (PyAudio/portaudio), and general build
# - libgl1, libglib2.0-0: needed by opencv-python
# - ffmpeg: media processing (optional but useful)
# - build-essential, portaudio19-dev, libasound2-dev: to compile PyAudio
# - libportaudio2, libportaudiocpp0: runtime for PyAudio
RUN apt-get update \
  && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
  build-essential \
  ffmpeg \
  libgl1 \
  libglib2.0-0 \
  libsm6 \
  libxext6 \
  libxrender1 \
  libportaudio2 \
  libportaudiocpp0 \
  libasound2 \
  portaudio19-dev \
  libasound2-dev \
  espeak-ng \
  libespeak1 \
  && rm -rf /var/lib/apt/lists/*

# Create working directory
WORKDIR /app

# Install Python dependencies first (leverage Docker layer cache)
COPY requirements.txt ./
RUN pip install --upgrade pip \
  && pip install -r requirements.txt

# Optional: remove build toolchain and -dev packages to reduce final image size
# Keep runtime libs like libportaudio2 installed
RUN apt-get update \
  && DEBIAN_FRONTEND=noninteractive apt-get purge -y \
  build-essential \
  portaudio19-dev \
  libasound2-dev \
  && DEBIAN_FRONTEND=noninteractive apt-get autoremove -y \
  && rm -rf /var/lib/apt/lists/*

# Copy the application code
COPY backend ./backend
COPY frontend ./frontend
COPY server.py ./server.py

# Expose FastAPI port
EXPOSE 7860

# Default environment variables (can be overridden at runtime)
# Example:
# ENV RAPIDAPI_HOST=real-time-image-search.p.rapidapi.com
# ENV AI_MODEL_URL=http://host.docker.internal:12345/v1/chat/completions

# Start the server using uvicorn directly (avoids reload in production)
CMD ["uvicorn", "backend.main:app", "--host", "0.0.0.0", "--port", "7860"]