<?php

namespace App\Http\Controllers;

use App\Models\NetworkDevice;
use App\Models\NetworkDeviceEvent;
use App\Models\NetworkScan;
use App\Services\NetworkScanImporter;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\View\View;

class NetworkController extends Controller
{
    // --- Übersicht ---
    public function index(): View
    {
        $latestScan  = NetworkScan::latest()->first();
        $totalDevices = NetworkDevice::count();
        $onlineDevices = NetworkDevice::where('status', 'online')->count();
        $recentEvents = NetworkDeviceEvent::with('device')
            ->where('documented', false)
            ->latest()
            ->take(10)
            ->get();
        $scans = NetworkScan::latest()->take(10)->get();

        return view('network.index', compact(
            'latestScan', 'totalDevices', 'onlineDevices', 'recentEvents', 'scans'
        ));
    }

    // --- Alle Geräte ---
    public function devices(Request $request): View
    {
        $query = NetworkDevice::with('events')
            ->orderBy('current_ip');

        if ($request->filled('status')) {
            $query->where('status', $request->status);
        }
        if ($request->filled('search')) {
            $s = $request->search;
            $query->where(function ($q) use ($s) {
                $q->where('current_ip', 'like', "%{$s}%")
                  ->orWhere('mac_address', 'like', "%{$s}%")
                  ->orWhere('hostname', 'like', "%{$s}%")
                  ->orWhere('label', 'like', "%{$s}%")
                  ->orWhere('mac_vendor', 'like', "%{$s}%");
            });
        }

        $devices = $query->paginate(50)->withQueryString();

        return view('network.devices', compact('devices'));
    }

    // --- Geräte-Detail ---
    public function device(NetworkDevice $device): View
    {
        $device->load(['events.documentedBy', 'hosts.scan']);
        $ipHistory = $device->hosts()
            ->select('ip_address', 'status', 'ping_ms', 'created_at')
            ->join('network_scans', 'network_scans.id', '=', 'network_hosts.scan_id')
            ->orderByDesc('network_hosts.created_at')
            ->take(50)
            ->get();

        return view('network.device', compact('device', 'ipHistory'));
    }

    // --- Gerät: Label/Notiz speichern ---
    public function updateDevice(Request $request, NetworkDevice $device): RedirectResponse
    {
        $validated = $request->validate([
            'label' => ['nullable', 'string', 'max:100'],
            'notes' => ['nullable', 'string', 'max:1000'],
        ]);

        $oldLabel = $device->label;
        $device->update($validated);

        if ($oldLabel !== $validated['label']) {
            NetworkDeviceEvent::create([
                'device_id'  => $device->id,
                'event_type' => 'label_changed',
                'old_value'  => $oldLabel,
                'new_value'  => $validated['label'],
                'description'=> 'Bezeichnung manuell geändert',
                'documented' => true,
                'documented_by' => auth()->id(),
                'documented_at' => now(),
            ]);
        }

        return redirect()->route('network.device', $device)
            ->with('success', 'Gerät aktualisiert.');
    }

    // --- Ereignis dokumentieren ---
    public function documentEvent(Request $request, NetworkDeviceEvent $event): RedirectResponse
    {
        $request->validate([
            'description' => ['nullable', 'string', 'max:500'],
        ]);

        $event->update([
            'documented'    => true,
            'documented_by' => auth()->id(),
            'documented_at' => now(),
            'description'   => $request->description ?? $event->description,
        ]);

        return back()->with('success', 'Ereignis dokumentiert.');
    }

    // --- Manuelle Notiz hinzufügen ---
    public function addNote(Request $request, NetworkDevice $device): RedirectResponse
    {
        $request->validate([
            'description' => ['required', 'string', 'max:500'],
        ]);

        NetworkDeviceEvent::create([
            'device_id'     => $device->id,
            'event_type'    => 'manual_note',
            'description'   => $request->description,
            'documented'    => true,
            'documented_by' => auth()->id(),
            'documented_at' => now(),
        ]);

        return back()->with('success', 'Notiz hinzugefügt.');
    }

    // --- Import ---
    public function showImport(): View
    {
        return view('network.import');
    }

    public function import(Request $request, NetworkScanImporter $importer): RedirectResponse
    {
        $request->validate([
            'scan_file' => ['required', 'file', 'mimes:txt,csv', 'max:5120'],
        ]);

        $path = $request->file('scan_file')->store('imports', 'local');
        $fullPath = storage_path('app/' . $path);

        $scan = $importer->importAngryIpScannerFile($fullPath, auth()->id());

        return redirect()->route('network.scan', $scan)
            ->with('success', "Import abgeschlossen: {$scan->online_hosts} online, {$scan->new_devices} neue Geräte.");
    }

    // --- Scan-Detail ---
    public function scan(NetworkScan $scan): View
    {
        $hosts = $scan->hosts()
            ->orderByRaw("INET_ATON(ip_address)")
            ->get();

        return view('network.scan', compact('scan', 'hosts'));
    }
}