<?php

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use Illuminate\Http\JsonResponse;
use Endroid\QrCode\QrCode as EndroidQrCode;
use Endroid\QrCode\Writer\PngWriter;

class QRCodeController extends Controller
{
    public function generate(Request $request): JsonResponse
    {
        try {
            $request->validate([
                'shape_id' => 'required|string',
            ]);

            $shapeId = $request->get('shape_id');
            
            // QR kod içeriği - shape ID ile URL oluştur
            $qrContent = url('/api/pdf-editor/annotations/' . $shapeId);
            
            // QR kod PNG olarak üret (Endroid QR Code v6)
            $qrCode = new EndroidQrCode(
                data: $qrContent,
                size: 200,
                margin: 10
            );
            
            $writer = new PngWriter();
            $result = $writer->write($qrCode);
            $qrCodeData = $result->getString();

        // QR kod dosyasını kaydet
        $fileName = 'qr_' . $shapeId . '_' . time() . '.png';
        
        // Klasörü oluştur
        $qrDir = storage_path('app/public/qr-codes');
        if (!file_exists($qrDir)) {
            mkdir($qrDir, 0755, true);
        }
        
        // QR kod dosyasını kaydet
        $filePath = $qrDir . '/' . $fileName;
        file_put_contents($filePath, $qrCodeData);
        
        // Public klasörüne de kopyala
        $publicQrDir = public_path('storage/qr-codes');
        if (!file_exists($publicQrDir)) {
            mkdir($publicQrDir, 0755, true);
        }
        $publicFilePath = $publicQrDir . '/' . $fileName;
        file_put_contents($publicFilePath, $qrCodeData);
        
            return response()->json([
                'success' => true,
                'data' => [
                    'shape_id' => $shapeId,
                    'qr_content' => $qrContent,
                    'qr_code_url' => url('storage/qr-codes/' . $fileName)
                ]
            ]);
        } catch (\Exception $e) {
            return response()->json([
                'success' => false,
                'error' => $e->getMessage(),
                'data' => null
            ], 500);
        }
    }

    public function generateForAnnotation($shapeId): JsonResponse
    {
        try {
            // QR kod içeriği
            $qrContent = url('/api/annotations/' . $shapeId);
            
            // QR kod PNG olarak üret (Endroid QR Code v6)
            $qrCode = new EndroidQrCode(
                data: $qrContent,
                size: 150,
                margin: 5
            );
            
            $writer = new PngWriter();
            $result = $writer->write($qrCode);
            $qrCodeData = $result->getString();
            
            // Base64 encode for frontend
            $base64QrCode = 'data:image/png;base64,' . base64_encode($qrCodeData);

            return response()->json([
                'success' => true,
                'data' => [
                    'shape_id' => $shapeId,
                    'qr_code' => $base64QrCode,
                    'qr_content' => $qrContent
                ]
            ]);
        } catch (\Exception $e) {
            return response()->json([
                'success' => false,
                'error' => $e->getMessage(),
                'data' => null
            ], 500);
        }
    }
}