<?php

declare(strict_types=1);

require_once __DIR__ . '/../../vendor/autoload.php';

use App\Framework\QrCode\QrCodeGenerator;
use App\Framework\QrCode\ValueObjects\ErrorCorrectionLevel;
use App\Framework\QrCode\ValueObjects\QrCodeConfig;
use App\Framework\QrCode\ValueObjects\QrCodeVersion;
use App\Framework\QrCode\ValueObjects\EncodingMode;

echo "=== PNG QR Code Generation for Testing ===\n\n";

$testData = 'HELLO WORLD';
$config = new QrCodeConfig(
    version: QrCodeVersion::fromNumber(1),
    errorCorrectionLevel: ErrorCorrectionLevel::M,
    encodingMode: EncodingMode::BYTE
);

$matrix = QrCodeGenerator::generate($testData, $config);
$size = $matrix->getSize();

// Generate high-quality PNG
$moduleSize = 20;
$quietZone = 4;
$canvasSize = ($size + 2 * $quietZone) * $moduleSize;

echo "Matrix: {$size}x{$size}\n";
echo "Module size: {$moduleSize}px\n";
echo "Quiet zone: {$quietZone} modules\n";
echo "Canvas: {$canvasSize}x{$canvasSize}px\n\n";

$image = imagecreatetruecolor($canvasSize, $canvasSize);
$white = imagecolorallocate($image, 255, 255, 255);
$black = imagecolorallocate($image, 0, 0, 0);

imagefill($image, 0, 0, $white);

$offset = $quietZone * $moduleSize;

for ($row = 0; $row < $size; $row++) {
    for ($col = 0; $col < $size; $col++) {
        if ($matrix->getModuleAt($row, $col)->isDark()) {
            $x = $offset + ($col * $moduleSize);
            $y = $offset + ($row * $moduleSize);
            
            imagefilledrectangle(
                $image,
                $x,
                $y,
                $x + $moduleSize - 1,
                $y + $moduleSize - 1,
                $black
            );
        }
    }
}

$outputDir = __DIR__ . '/test-qrcodes';
$filepath = $outputDir . '/scannable-hello-world.png';
imagepng($image, $filepath, 0);

echo "✅ PNG generated: {$filepath}\n";
echo "   Size: {$canvasSize}x{$canvasSize}px\n";
echo "   File size: " . filesize($filepath) . " bytes\n\n";

echo "This PNG should be scannable.\n";
echo "Please test it with your smartphone scanner.\n";