#!/bin/bash

# Diagnose Synology USB Copy Issue
# Connects to NAS and checks USB device status

set -e

echo "=== Synology USB Copy Diagnosis ==="
echo ""

# Check if nas alias works
if ! command -v nas &> /dev/null; then
    echo "⚠️  'nas' alias not found. Using SSH directly."
    echo "   Please provide: ssh user@nas-ip"
    exit 1
fi

echo "🔍 Checking USB device status on NAS..."
echo ""

echo "1. USB Devices Connected:"
nas "lsusb 2>/dev/null || echo 'lsusb not available, checking dmesg...' && dmesg | grep -i usb | tail -5" || echo "   ⚠️  Could not check USB devices"
echo ""

echo "2. USB Mount Points:"
nas "mount | grep -i usb || echo '   No USB devices mounted'" || echo "   ⚠️  Could not check mounts"
echo ""

echo "3. USB Volumes:"
nas "ls -la /volumeUSB*/ 2>/dev/null || echo '   No /volumeUSB* directories found'" || echo "   ⚠️  Could not check USB volumes"
echo ""

echo "4. Disk Partitions:"
nas "cat /proc/partitions | grep -v '^major' | head -10" || echo "   ⚠️  Could not check partitions"
echo ""

echo "5. Disk Usage (USB devices):"
nas "df -h | grep -i usb || echo '   No USB devices in df output'" || echo "   ⚠️  Could not check disk usage"
echo ""

echo "6. USB Copy Service Status:"
nas "synoservice --status pkgctl-USB-Copy 2>/dev/null || echo '   Could not check USB Copy service status'" || echo "   ⚠️  Could not check service"
echo ""

echo "7. USB Copy Configuration:"
nas "cat /usr/syno/etc/packages/USB-Copy/usbcopy.conf 2>/dev/null | head -20 || echo '   Could not read USB Copy config'" || echo "   ⚠️  Could not read config"
echo ""

echo "8. Check for USB devices in /dev:"
nas "ls -la /dev/sd* /dev/hd* 2>/dev/null | head -10 || echo '   No USB block devices found'" || echo "   ⚠️  Could not check devices"
echo ""

echo "=== Diagnosis Summary ==="
echo ""
echo "Common issues to check:"
echo ""
echo "1. If no USB devices found:"
echo "   - USB device not connected to front port"
echo "   - USB device not recognized by Synology"
echo "   - Try different USB device"
echo ""
echo "2. If USB device mounted but USB Copy shows 'Unavailable':"
echo "   - USB device mounted as shared folder"
echo "   - Another task using the USB device"
echo "   - Need to unmount from other uses"
echo ""
echo "3. If USB Copy service not running:"
echo "   - Package Center → USB Copy → Start"
echo ""