<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use App\Models\Articolo;
use Barryvdh\DomPDF\Facade\Pdf;
use Database\Seeders\ArticoloSeeder;
use Illuminate\Http\Request;
use SimpleSoftwareIO\QrCode\Facades\QrCode;

class ArticoloController extends Controller
{
    public function index(Request $request)
    {
        $query = Articolo::query();

        if ($request->filled('search')) {
            $search = $request->search;
            $query->where(function ($q) use ($search) {
                $q->where('codice_articolo', 'like', "%{$search}%")
                  ->orWhere('descrizione', 'like', "%{$search}%")
                  ->orWhere('ciclo', 'like', "%{$search}%");
            });
        }

        $articoli = $query->orderBy('created_at', 'desc')->paginate(15);

        return view('admin.articoli.index', compact('articoli'));
    }

    public function create()
    {
        return view('admin.articoli.create');
    }

    public function store(Request $request)
    {
        $validated = $request->validate([
            'codice_articolo' => 'required|string|max:255|unique:articoli',
            'ciclo' => 'nullable|string|max:255',
            'diametro' => 'nullable|string|max:255',
            'descrizione' => 'nullable|string',
            'posizione' => 'nullable|string|max:255',
            'quantita' => 'nullable|integer|min:0',
            'tipo_lavorazione' => 'nullable|string|max:255',
            'materiale_lavorare' => 'nullable|string|max:255',
            'maximum_thickness' => 'nullable|string|max:255',
            'speed_rpm' => 'nullable|integer|min:0',
            'feed' => 'nullable|numeric|min:0',
            'max_thrust_a' => 'nullable|string|max:255',
            'min_torque_a' => 'nullable|string|max:255',
            'quantita_fori' => 'nullable|integer|min:0',
        ]);

        $articolo = Articolo::create($validated);

        return redirect()->route('admin.articoli.show', $articolo)
            ->with('success', 'Articolo creato con successo.');
    }

    public function show(Articolo $articolo)
    {
        return view('admin.articoli.show', compact('articolo'));
    }

    public function edit(Articolo $articolo)
    {
        return view('admin.articoli.edit', compact('articolo'));
    }

    public function update(Request $request, Articolo $articolo)
    {
        $validated = $request->validate([
            'codice_articolo' => 'required|string|max:255|unique:articoli,codice_articolo,' . $articolo->id,
            'ciclo' => 'nullable|string|max:255',
            'diametro' => 'nullable|string|max:255',
            'descrizione' => 'nullable|string',
            'posizione' => 'nullable|string|max:255',
            'quantita' => 'nullable|integer|min:0',
            'tipo_lavorazione' => 'nullable|string|max:255',
            'materiale_lavorare' => 'nullable|string|max:255',
            'maximum_thickness' => 'nullable|string|max:255',
            'speed_rpm' => 'nullable|integer|min:0',
            'feed' => 'nullable|numeric|min:0',
            'max_thrust_a' => 'nullable|string|max:255',
            'min_torque_a' => 'nullable|string|max:255',
            'quantita_fori' => 'nullable|integer|min:0',
        ]);

        $articolo->update($validated);

        return redirect()->route('admin.articoli.show', $articolo)
            ->with('success', 'Articolo aggiornato con successo.');
    }

    public function destroy(Articolo $articolo)
    {
        $articolo->delete();

        return redirect()->route('admin.articoli.index')
            ->with('success', 'Articolo eliminato con successo.');
    }

    public function qrCode(Articolo $articolo)
    {
        $qrCode = QrCode::format('svg')
            ->size(300)
            ->errorCorrection('H')
            ->generate($articolo->qr_url);

        return response($qrCode)
            ->header('Content-Type', 'image/svg+xml');
    }

    public function downloadQrCode(Articolo $articolo)
    {
        $qrCode = QrCode::format('png')
            ->size(300)
            ->errorCorrection('H')
            ->generate($articolo->qr_url);

        return response($qrCode)
            ->header('Content-Type', 'image/png')
            ->header('Content-Disposition', 'attachment; filename="qr-' . $articolo->codice_articolo . '.png"');
    }

    public function printQrCodes(Request $request)
    {
        $ids = explode(',', $request->get('ids', ''));
        $ids = array_filter($ids, fn($id) => is_numeric($id));

        if (empty($ids)) {
            return redirect()->route('admin.articoli.index')
                ->with('error', 'Nessun articolo selezionato.');
        }

        $articoli = Articolo::whereIn('id', $ids)->get();

        // Generate QR codes as base64 for each article
        $articoliWithQr = $articoli->map(function ($articolo) {
            $qrCode = QrCode::format('png')
                ->size(100) // 100px ~ 10mm at 254 DPI
                ->errorCorrection('H')
                ->margin(0)
                ->generate($articolo->qr_url);

            return [
                'articolo' => $articolo,
                'qr_base64' => base64_encode($qrCode),
            ];
        });

        $pdf = Pdf::loadView('admin.articoli.pdf-qrcodes', [
            'articoliWithQr' => $articoliWithQr,
        ]);

        $pdf->setPaper('a4', 'portrait');

        return $pdf->stream('qrcodes.pdf');
    }

    public function import(Request $request)
    {
        $request->validate([
            'file' => 'required|file|mimes:xlsx,xls',
            'clean_import' => 'nullable|boolean',
        ]);

        $file = $request->file('file');
        $cleanImport = $request->boolean('clean_import', false);

        try {
            $seeder = new ArticoloSeeder();
            $result = $seeder->importFromExcel($file->getPathname(), $cleanImport);

            $message = "Import completato! ";
            $message .= "Articoli importati: {$result['imported']}, ";
            $message .= "Articoli aggiornati: {$result['updated']}, ";
            $message .= "Totale articoli: {$result['total']}";

            if (!empty($result['errors'])) {
                $message .= ". Errori: " . count($result['errors']);
            }

            return response()->json([
                'success' => true,
                'message' => $message,
                'data' => $result,
            ]);
        } catch (\Exception $e) {
            return response()->json([
                'success' => false,
                'message' => 'Errore durante l\'importazione: ' . $e->getMessage(),
            ], 500);
        }
    }
}