<?php

namespace App\Http\Controllers;

use App\Models\NetworkDevice;
use App\Models\NetworkDeviceEvent;
use App\Models\NetworkScan;
use App\Models\NetworkSegment;
use App\Services\NetworkScanImporter;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Storage;
use Illuminate\View\View;

class NetworkController extends Controller
{
    // --- Dashboard ---
    public function dashboard(): View
    {
        $segments = NetworkSegment::withCount('scans')->orderBy('name')->get();
        $totalDevices  = NetworkDevice::count();
        $onlineDevices = NetworkDevice::where('status', 'online')->count();
        $recentEvents  = NetworkDeviceEvent::with('device')
            ->where('documented', false)
            ->latest()
            ->take(10)
            ->get();

        // Letzten Scan pro Segment
        $latestScans = NetworkScan::select('network_scans.*')
            ->orderByDesc('created_at')
            ->get()
            ->groupBy('segment_id');

        return view('network.dashboard', compact(
            'segments', 'totalDevices', 'onlineDevices', 'recentEvents', 'latestScans'
        ));
    }

    // --- Globale Suche ---
    public function search(Request $request): View
    {
        $q       = trim($request->get('q', ''));
        $devices = collect();

        if (strlen($q) >= 2) {
            $devices = NetworkDevice::with('events')
                ->where(function ($query) use ($q) {
                    $query->where('current_ip',   'like', "%{$q}%")
                          ->orWhere('mac_address', 'like', "%{$q}%")
                          ->orWhere('hostname',    'like', "%{$q}%")
                          ->orWhere('label',       'like', "%{$q}%")
                          ->orWhere('mac_vendor',  'like', "%{$q}%");
                })
                ->orderBy('current_ip')
                ->paginate(50)
                ->withQueryString();
        }

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

    // --- Alte index-Route umleiten ---
    public function index(): \Illuminate\Http\RedirectResponse
    {
        return redirect()->route('network.dashboard');
    }

    // --- 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
    {
        $segments = NetworkSegment::where('active', true)->orderBy('name')->get();
        return view('network.import', compact('segments'));
    }

    public function import(Request $request, NetworkScanImporter $importer): RedirectResponse
    {
        $request->validate([
            'segment_id' => ['nullable', 'exists:network_segments,id'],
            'scan_file'  => ['required', 'file', 'mimes:txt,csv', 'max:10240'],
        ]);

        $path     = $request->file('scan_file')->store('imports', 'local');
        $fullPath = Storage::disk('local')->path($path);

        $scan = $importer->importAngryIpScannerFile(
            $fullPath,
            auth()->id(),
            $request->input('segment_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'));
    }
}