FROM nvidia/cuda:12.1.1-devel-ubuntu22.04

ENV DEBIAN_FRONTEND=noninteractive
ENV TORCH_CUDA_ARCH_LIST="7.5"
ENV PYTHONUNBUFFERED=1

# ──────────────────────────────────────────────
# 1. System dependencies + Python 3.10
# ──────────────────────────────────────────────
RUN apt-get update && apt-get install -y --no-install-recommends \
    software-properties-common \
    && add-apt-repository ppa:deadsnakes/ppa \
    && apt-get update && apt-get install -y --no-install-recommends \
    python3.10 python3.10-dev python3.10-venv python3.10-distutils \
    git wget curl build-essential cmake \
    libgl1-mesa-glx libglib2.0-0 libsm6 libxrender1 libxext6 \
    libgomp1 libglu1-mesa libxi6 libxmu6 \
    && rm -rf /var/lib/apt/lists/*

# Make python3.10 the default
RUN update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.10 1 \
    && update-alternatives --install /usr/bin/python python /usr/bin/python3.10 1 \
    && curl -sS https://bootstrap.pypa.io/get-pip.py | python3.10

# ──────────────────────────────────────────────
# 2. PyTorch 2.4.0+cu121 (pin FIRST)
# ──────────────────────────────────────────────
RUN pip install --no-cache-dir \
    torch==2.4.0 torchvision==0.19.0 \
    --index-url https://download.pytorch.org/whl/cu121

# ──────────────────────────────────────────────
# 3. setup.sh --basic deps
# ──────────────────────────────────────────────
# Remove system-installed blinker (distutils) that blocks pip upgrades
RUN pip install --no-cache-dir --ignore-installed blinker \
    && pip install --no-cache-dir \
    pillow imageio imageio-ffmpeg tqdm easydict \
    opencv-python-headless scipy ninja \
    rembg onnxruntime trimesh open3d xatlas \
    pyvista pymeshfix igraph \
    transformers scikit-image einops safetensors \
    huggingface-hub

# ──────────────────────────────────────────────
# 4. utils3d (pinned commit)
# ──────────────────────────────────────────────
RUN pip install --no-cache-dir \
    git+https://github.com/EasternJournalist/utils3d.git@9a4eb15e4021b67b12c460c7057d642626897ec8

# ──────────────────────────────────────────────
# 5. spconv-cu120
# ──────────────────────────────────────────────
RUN pip install --no-cache-dir spconv-cu120

# ──────────────────────────────────────────────
# 6. xformers 0.0.27.post2 (cu121)
# ──────────────────────────────────────────────
RUN pip install --no-cache-dir \
    xformers==0.0.27.post2 \
    --index-url https://download.pytorch.org/whl/cu121

# ──────────────────────────────────────────────
# 7. kaolin (torch-2.4.0 cu121)
# ──────────────────────────────────────────────
RUN pip install --no-cache-dir kaolin \
    --find-links https://nvidia-kaolin.s3.us-east-2.amazonaws.com/torch-2.4.0_cu121.html

# ──────────────────────────────────────────────
# 8. Pre-built CUDA wheels (built on Colab to avoid OOM on HF build machine)
#    Requires: nvdiffrast, diffoctreerast, diff_gaussian_rasterization
#    See scene_generation/03_build_wheels.ipynb to rebuild
# ──────────────────────────────────────────────
COPY wheels/*.whl /tmp/wheels/
RUN pip install --no-cache-dir /tmp/wheels/*.whl && rm -rf /tmp/wheels

# ──────────────────────────────────────────────
# 9. numpy pin + FastAPI (replaces gradio to avoid transitive dep hell)
# ──────────────────────────────────────────────
RUN pip install --no-cache-dir \
    numpy==1.26.4 \
    fastapi uvicorn python-multipart

# ──────────────────────────────────────────────
# 10. Clone SceneGen repo
# ──────────────────────────────────────────────
RUN git clone https://github.com/Mengmouxu/SceneGen.git /opt/SceneGen

# ──────────────────────────────────────────────
# 11. Download checkpoints (baked into image)
# ──────────────────────────────────────────────
RUN python -c "\
from huggingface_hub import snapshot_download; \
snapshot_download(repo_id='facebook/VGGT-1B', local_dir='/opt/SceneGen/checkpoints/VGGT-1B'); \
snapshot_download(repo_id='haoningwu/SceneGen', local_dir='/opt/SceneGen/checkpoints/scenegen'); \
"

# ──────────────────────────────────────────────
# 12. HF Space user setup
# ──────────────────────────────────────────────
RUN useradd -m -u 1000 user \
    && chown -R user:user /opt/SceneGen

USER user
ENV HOME=/home/user
WORKDIR /home/user/app

COPY --chown=user:user app.py .

CMD ["python", "app.py"]