#!/bin/bash
# =============================================================================
# Script rápido: Solo driver Realtek 8812AU para Kali Linux
# Ejecutar como root desde el USB live
# =============================================================================
set -e

echo "=== REALTEK 8812AU DRIVER INSTALL ==="
echo ""

# Verificar que se ejecuta como root
if [ "$EUID" -ne 0 ]; then
    echo "Ejecuta como root: sudo bash $0"
    exit 1
fi

# Instalar dependencias
echo "[1/4] Instalando dependencias..."
apt update -qq
apt install -y -qq dkms linux-headers-$(uname -r) git build-essential

# Clonar driver
echo "[2/4] Descargando driver..."
DRIVER_DIR="/opt/rtl8812au"
if [ -d "$DRIVER_DIR" ]; then
    echo "  Driver ya existe, actualizando..."
    cd "$DRIVER_DIR"
    git pull
else
    git clone https://github.com/aircrack-ng/rtl8812au.git "$DRIVER_DIR"
    cd "$DRIVER_DIR"
fi

# Compilar
echo "[3/4] Compilando..."
make clean
make

# Instalar
echo "[4/4] Instalando..."
make install

# Cargar módulo
echo ""
echo "Cargando módulo..."
modprobe 8812au 2>/dev/null || modprobe rtl8812au 2>/dev/null || echo "Módulo no se cargó (reiniciar para aplicar)"

# Verificar
echo ""
if ip link show | grep -q wl; then
    IFACE=$(ip link show | grep wl | awk -F: '{print $2}' | tr -d ' ' | head -1)
    echo "✓ WiFi detectado: $IFACE"
    echo "  Para modo monitor: airmon-ng start $IFACE"
else
    echo "⚠ WiFi no detectado aún. Reinicia el USB."
fi

echo ""
echo "¡Driver instalado!"