# Switched to bookworm for newer system libraries and GCC 12+
FROM python:3.11-slim-bookworm

ENV DEBIAN_FRONTEND=noninteractive \
    PYTHONUNBUFFERED=1 \
    # Ensure CMake finds the libraries we install in /usr
    CMAKE_PREFIX_PATH=/usr

# 1. Install System Dependencies & Build Tools
# Added: libgl1-mesa-glx/dri (Fixes Chrome black screen), libcurl4-openssl-dev (for WebRTC)
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    pkg-config \
    cmake \
    git \
    libswscale-dev \
    libavutil-dev \
    python3-dev \
    xvfb \
    x11-utils \
    x11-xserver-utils \
    xdotool \
    matchbox-window-manager \
    # X11 Development Headers
    libx11-dev \
    libxtst-dev \
    libxext-dev \
    libxrandr-dev \
    libxfixes-dev \
    libxcomposite-dev \
    libxcursor-dev \
    libxdamage-dev \
    libxi-dev \
    libxss-dev \
    # Media & Encoding
    libssl-dev \
    libx264-dev \
    libavcodec-dev \
    libavdevice-dev \
    libavfilter-dev \
    libavformat-dev \
    libavutil-dev \
    libswscale-dev \
    libswresample-dev \
    libvpx-dev \
    libopus-dev \
    # Software Rendering (Crucial for Xvfb/Chrome)
    libgl1-mesa-dri \
    libgl1-mesa-glx \
    mesa-utils \
    libgbm1 \
    libasound2 \
    # Chrome/Electron Deps
    libnss3 \
    libatk1.0-0 \
    libatk-bridge2.0-0 \
    libcups2 \
    libdrm2 \
    libpangocairo-1.0-0 \
    libgtk-3-0 \
    fonts-liberation \
    fonts-noto-color-emoji \
    # Utilities
    wget \
    curl \
    gnupg \
    procps \
    ca-certificates \
    unzip \
    && rm -rf /var/lib/apt/lists/*

# 2. Build and Install LibDataChannel (C++ WebRTC Library)
# We explicitely use CMAKE_INSTALL_PREFIX=/usr to ensure pkg-config finds it later
RUN cd /tmp && \
    git clone https://github.com/paullouisageneau/libdatachannel.git && \
    cd libdatachannel && \
    git submodule update --init --recursive && \
    cmake -B build \
        -DCMAKE_BUILD_TYPE=Release \
        -DCMAKE_INSTALL_PREFIX=/usr \
        -DUSE_GNUTLS=0 \
        -DUSE_NICE=0 \
        -DNO_WEBSOCKET=OFF \
        -DNO_EXAMPLES=ON \
        -DNO_TESTS=ON && \
    cmake --build build -j$(nproc) && \
    cmake --install build && \
    ldconfig && \
    cd .. && rm -rf libdatachannel

# 3. Install Chrome
RUN wget -q https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb && \
    apt-get update && \
    apt-get install -y ./google-chrome-stable_current_amd64.deb && \
    rm google-chrome-stable_current_amd64.deb && \
    rm -rf /var/lib/apt/lists/*

# 4. Configure Chrome Wrapper (Sandbox disabled for Docker)
RUN mv /usr/bin/google-chrome /usr/bin/google-chrome-orig && \
    echo '#!/bin/bash\n/usr/bin/google-chrome-orig --no-sandbox --start-maximized --no-first-run --no-default-browser-check --disable-gpu-compositing --disable-dev-shm-usage "$@"' > /usr/bin/google-chrome && \
    chmod +x /usr/bin/google-chrome

RUN update-alternatives --install /usr/bin/x-www-browser x-www-browser /usr/bin/google-chrome 9999

# 5. Install Antigravity (With Robust GPG Key Handling)
RUN mkdir -p /etc/apt/keyrings && \
    curl -fsSL https://us-central1-apt.pkg.dev/doc/repo-signing-key.gpg -o /tmp/antigravity-key.gpg && \
    gpg --dearmor --yes -o /etc/apt/keyrings/antigravity-repo-key.gpg /tmp/antigravity-key.gpg && \
    echo "deb [signed-by=/etc/apt/keyrings/antigravity-repo-key.gpg] https://us-central1-apt.pkg.dev/projects/antigravity-auto-updater-dev/ antigravity-debian main" | tee /etc/apt/sources.list.d/antigravity.list && \
    apt-get update && \
    apt-get install -y antigravity && \
    rm -rf /var/lib/apt/lists/* /tmp/antigravity-key.gpg

# 6. User Setup
RUN useradd -m -u 1000 user
USER user
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH \
    LD_LIBRARY_PATH=/usr/lib:/usr/local/lib
WORKDIR $HOME/app

# 7. Install Python Dependencies
# We install aiohttp explicitly first because app.py needs it to compile
COPY --chown=user:user requirements.txt .
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir aiohttp psutil && \
    pip install --no-cache-dir -r requirements.txt

# 8. Copy App and Compile Extension
COPY --chown=user:user app.py .

# Force compilation of the C++ extension during build time.
# DISPLAY="" prevents X11 connection attempts during build.
RUN DISPLAY="" python -c "import app; print('C++ Extension Compiled Successfully')"

# 9. Environment Configuration
ENV DISPLAY=:99 \
    RESOLUTION=1280x720 \
    BROWSER=/usr/bin/google-chrome

EXPOSE 7860

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