FROM ubuntu:22.04

ENV DEBIAN_FRONTEND=noninteractive
ENV LANG=en_US.UTF-8
ENV LC_ALL=en_US.UTF-8

RUN apt-get update && apt-get install -y \
    locales \
    curl \
    wget \
    git \
    vim \
    htop \
    net-tools \
    iputils-ping \
    dnsutils \
    software-properties-common \
    && locale-gen en_US.UTF-8 \
    && update-locale LANG=en_US.UTF-8

RUN apt-get install -y \
    xfce4 \
    xfce4-goodies \
    xfce4-terminal \
    xfce4-panel \
    xfce4-session \
    xfce4-settings \
    xfdesktop4 \
    xfwm4 \
    xfce4-appfinder \
    thunar \
    mousepad \
    xfce4-screenshooter \
    xfce4-taskmanager

RUN apt-get install -y \
    novnc \
    websockify \
    python3-numpy \
    python3-websockify

RUN apt-get install -y \
    tigervnc-standalone-server \
    tigervnc-common

RUN apt-get install -y \
    firefox \
    chromium-browser \
    python3 \
    python3-pip \
    build-essential \
    sudo \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

RUN useradd -m -s /bin/bash user && \
    echo 'user:password' | chpasswd && \
    adduser user sudo

RUN mkdir -p /home/user/.vnc && \
    echo '#!/bin/sh' > /home/user/.vnc/xstartup && \
    echo 'unset SESSION_MANAGER' >> /home/user/.vnc/xstartup && \
    echo 'unset DBUS_SESSION_BUS_ADDRESS' >> /home/user/.vnc/xstartup && \
    echo 'exec /usr/bin/startxfce4 &' >> /home/user/.vnc/xstartup && \
    chmod +x /home/user/.vnc/xstartup

RUN chown -R user:user /home/user

EXPOSE 7080

RUN echo '#!/bin/bash\n\
set -e\n\
\n\
echo "Starting Ubuntu Desktop..."\n\
\n\
mkdir -p /home/user/.vnc\n\
echo "password" | vncpasswd -f > /home/user/.vnc/passwd\n\
chmod 600 /home/user/.vnc/passwd\n\
\n\
echo "Starting VNC server..."\n\
vncserver :1 -geometry 1280x720 -depth 24\n\
\n\
echo "Waiting for VNC server to start..."\n\
sleep 5\n\
\n\
echo "Starting noVNC..."\n\
websockify --web=/usr/share/novnc/ 7080 localhost:5901 &\n\
\n\
echo "Desktop ready! Access at http://localhost:7080"\n\
echo "Press Ctrl+C to stop"\n\
\n\
trap "echo Shutting down...; vncserver -kill :1; exit 0" SIGTERM SIGINT\n\
\n\
while true; do\n\
    sleep 1\n\
done' > /startup.sh && chmod +x /startup.sh

USER user
WORKDIR /home/user
CMD ["/startup.sh"]