#!/bin/bash

# Setup script for X11 Desktop on Termux
# This script helps install dependencies and launch the environment.

set -e

echo "X11 Desktop - Termux Setup Helper"
echo "================================="

# Check if running in Termux
if [ -z "$TERMUX_VERSION" ]; then
    echo "Error: This script is intended to run inside Termux on Android."
    exit 1
fi

setup_dependencies() {
    echo "Updating packages..."
    pkg update -y

    echo "Installing X11 repo..."
    pkg install -y x11-repo

    echo "Installing dependencies (proot-distro, termux-x11-nightly)..."
    pkg install -y proot-distro termux-x11-nightly pulseaudio

    echo "Dependencies installed."
}

install_debian() {
    if proot-distro list | grep -q "debian (installed)"; then
        echo "Debian is already installed."
    else
        echo "Installing Debian..."
        proot-distro install debian
    fi
}

launch_session() {
    echo "Instructions to launch:"
    echo "1. Open the Termux:X11 app."
    echo "2. Run the following command to login and start XFCE:"
    echo ""
    echo "   proot-distro login --user user debian --shared-tmp -- bash -c 'export DISPLAY=:0; dbus-launch --exit-with-session xfce4-session'"
    echo ""
}

echo "Select an option:"
echo "1) Install Dependencies"
echo "2) Install Debian (Proot)"
echo "3) Show Launch Instructions"
echo "4) Exit"

read -p "Choice: " choice

case $choice in
    1)
        setup_dependencies
        ;;
    2)
        install_debian
        ;;
    3)
        launch_session
        ;;
    4)
        exit 0
        ;;
    *)
        echo "Invalid choice."
        ;;
esac