#!/bin/bash

echo "🔄 Resetting USB system..."

# Step 1: Unmount the drive if it's mounted
MOUNT_POINT="/mnt/my-drive"
if mountpoint -q "$MOUNT_POINT"; then
    echo "⚡ Unmounting $MOUNT_POINT..."
    sudo umount "$MOUNT_POINT"
else
    echo "⚠ No drive mounted at $MOUNT_POINT"
fi

# Step 2: Unload USB storage module
echo "⚡ Unloading usb_storage module..."
sudo rmmod usb_storage 2>/dev/null || sudo modprobe -r usb_storage
sleep 2

# Step 3: Reset the USB controller
echo "🔄 Unbinding USB controller..."
echo -n "0000:00:14.0" | sudo tee /sys/bus/pci/drivers/xhci_hcd/unbind
sleep 2

echo "🔄 Binding USB controller..."
echo -n "0000:00:14.0" | sudo tee /sys/bus/pci/drivers/xhci_hcd/bind
sleep 2

# Step 4: Reload USB storage module
echo "⚡ Reloading usb_storage module..."
sudo modprobe usb_storage

echo "✅ USB reset complete! Run 'lsusb' to verify."