#!/bin/bash

# --- 1. SET UP STORAGE PATHS ---
# We work in /tmp or current dir to ensure we have write access
cd /app

# --- 2. DOWNLOAD ANDROID ISO (443 MB) ---
ISO_FILE="android-x86-4.4-r5.iso"
ISO_URL="https://sourceforge.net/projects/android-x86/files/Release%204.4/android-x86-4.4-r5.iso/download"

if [ ! -f "$ISO_FILE" ]; then
    echo "Disk space is tight. Downloading Android KitKat..."
    # -q for quiet (saves log space), --show-progress for visual
    wget -q --show-progress -O "$ISO_FILE" "$ISO_URL"
else
    echo "Android ISO found. Skipping download."
fi

# --- 3. DOWNLOAD & SETUP NOVNC (Web Viewer) ---
# We download the UI directly from GitHub to save space compared to installing a package
if [ ! -d "noVNC-1.4.0" ]; then
    echo "Downloading noVNC Interface..."
    wget -q -O novnc.zip https://github.com/novnc/noVNC/archive/refs/tags/v1.4.0.zip
    unzip -q novnc.zip
    rm novnc.zip # Delete zip to save space immediately
    
    # Download Websockify (The bridge between QEMU and Browser)
    echo "Downloading Websockify..."
    wget -q -O websockify.zip https://github.com/novnc/websockify/archive/refs/tags/v0.11.0.zip
    unzip -q websockify.zip
    rm websockify.zip
    
    # Link websockify into noVNC
    mv websockify-0.11.0 noVNC-1.4.0/utils/websockify
fi

# --- 4. START THE SYSTEM ---

echo "Starting Web Server on port 7860..."
# Start the noVNC web server in the background
./noVNC-1.4.0/utils/novnc_proxy --vnc localhost:5900 --listen 7860 &

echo "Booting Android (Touch Mode Enabled)..."
# FLAGS EXPLAINED FOR 1GB LIMIT & MOBILE:
# -m 1024:            Reduced RAM to 1GB (Leaving 1GB for ISO storage on disk)
# -device usb-tablet: Absolute touch input for mobile users
# -vga std:           Standard graphics
# -snapshot:          Write temporary data to RAM, not Disk (Saves storage!)

qemu-system-i386 \
    -m 1024 \
    -smp 2 \
    -cpu qemu64 \
    -vga std \
    -net nic,model=virtio -net user \
    -cdrom "$ISO_FILE" \
    -device usb-tablet \
    -vnc :0 \
    -snapshot