FROM ubuntu:22.04

ARG BLENDER_VERSION=5.0.1
ENV DEBIAN_FRONTEND=noninteractive
ENV PYTHONUNBUFFERED=1
ENV BLENDER_VERSION=${BLENDER_VERSION}
# Blender 5.x is mounted from the host at /opt/blender (see docker-compose.yml)
ENV BLENDER_BIN=/opt/blender/blender
# OSMesa for headless cadquery/VTK (no display needed)
ENV PYOPENGL_PLATFORM=osmesa
ENV VTK_DEFAULT_EGL=0

# Runtime libraries for cadquery/OCC + Blender 5.x headless
# Also installs Python 3.11 via deadsnakes PPA (Ubuntu 22.04 ships 3.10)
RUN apt-get update && apt-get install -y --no-install-recommends \
    software-properties-common gnupg gpg-agent \
    && add-apt-repository ppa:deadsnakes/ppa -y \
    && apt-get update && apt-get install -y --no-install-recommends \
    python3.11 \
    python3.11-dev \
    python3.11-distutils \
    python3-pip \
    python3-dev \
    curl \
    libpq-dev \
    gcc \
    libxrender1 \
    libxi6 \
    libxkbcommon-x11-0 \
    libsm6 \
    libglib2.0-0 \
    libgl1-mesa-glx \
    libosmesa6 \
    libgomp1 \
    libxfixes3 \
    libxrandr2 \
    libxcursor1 \
    libxinerama1 \
    libwayland-client0 \
    libwayland-cursor0 \
    libwayland-egl1 \
    libvulkan1 \
    mesa-vulkan-drivers \
    libegl1 \
    libegl-mesa0 \
    libgbm1 \
    ffmpeg \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Use Python 3.11 as the default pip target
RUN curl -sS https://bootstrap.pypa.io/get-pip.py | python3.11 \
    && update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.11 1 \
    && update-alternatives --install /usr/bin/pip3 pip3 /usr/local/bin/pip3.11 1

# Install backend Python dependencies (includes celery, sqlalchemy, fastapi, etc.)
COPY backend/pyproject.toml .
RUN pip3 install --no-cache-dir -e .

# Install cadquery (heavy — installed after backend deps for better layer caching)
RUN pip3 install --no-cache-dir "cadquery>=2.4.0"

# Install trimesh for STL→GLB geometry export (separate layer to avoid cache invalidation)
RUN pip3 install --no-cache-dir "trimesh>=4.2.0"

# Copy render scripts
COPY render-worker/scripts/ /render-scripts/

# Version check script — fails fast if Blender < 5.0.1
COPY render-worker/check_version.py /check_version.py

# Copy backend app code (overridden by volume mount in docker-compose)
COPY backend/ .

# Verify Blender version at build time if binary is available
# (skipped during build since /opt/blender is a host mount)
CMD ["bash", "-c", "python3 /check_version.py && celery -A app.tasks.celery_app worker --loglevel=info -Q thumbnail_rendering --concurrency=1"]