FROM python:3.11-slim

WORKDIR /services/app_service

# System packages for video/image processing and OpenCV runtime
RUN apt-get update && apt-get install -y \
    ffmpeg \
    curl \
    git \
    git-lfs \
    libgl1 \
    libglib2.0-0 \
    && rm -rf /var/lib/apt/lists/* \
    && git lfs install

# Reduce build-time and run-time memory usage and set writable config dirs
ENV PIP_NO_CACHE_DIR=1 \
    PIP_ROOT_USER_ACTION=ignore \
    OMP_NUM_THREADS=1 \
    MKL_NUM_THREADS=1 \
    HOME=/tmp \
    XDG_CACHE_HOME=/tmp/.cache \
    MPLCONFIGDIR=/tmp/matplotlib \
    YOLO_CONFIG_DIR=/tmp/Ultralytics \
    STREAMLIT_BROWSER_GATHER_USAGE_STATS=false

# Create config/cache dirs to avoid permission issues
RUN mkdir -p /tmp/.streamlit /tmp/.cache /tmp/matplotlib /tmp/Ultralytics \
    && chmod -R 777 /tmp/.streamlit /tmp/.cache /tmp/matplotlib /tmp/Ultralytics

# Python deps (CPU-only PyTorch wheels)
RUN python -m pip install --upgrade pip setuptools wheel && \
    pip install --no-cache-dir \
    streamlit==1.49.1 \
    moviepy==2.2.1 \
    pillow>=10.0.0 \
    ultralytics==8.0.196 \
    torch==2.5.1 torchvision==0.20.1 --extra-index-url https://download.pytorch.org/whl/cpu


# Copy entire repository and download script
COPY . /tmp/repo
WORKDIR /tmp/repo

# Pull LFS files and copy app service
RUN git lfs pull && cp -r services/app_service/* /services/app_service/

WORKDIR /services/app_service

# Ensure app directory is writable at runtime
RUN chmod -R 777 /services/app_service

# Streamlit config via env
ENV STREAMLIT_SERVER_ENABLECORS=false \
    STREAMLIT_SERVER_ENABLE_XSRF_PROTECTION=false \
    STREAMLIT_SERVER_ADDRESS=0.0.0.0 \
    STREAMLIT_SERVER_HEADLESS=true \
    STREAMLIT_SERVER_MAX_UPLOAD_SIZE=200

# Hugging Face Spaces will set $PORT (default 7860) — listen on that 
ENV PORT=7860
EXPOSE 7860

# Healthcheck should also use $PORT
HEALTHCHECK CMD curl --fail http://localhost:${PORT}/_stcore/health || exit 1

# Use $PORT instead of hard-coding 8501
ENTRYPOINT ["sh", "-c", "streamlit run app.py --server.port=$PORT --server.address=0.0.0.0"]