michaelschiemer/tests/debug/analyze-svg-qrcode.php

<?php

declare(strict_types=1);

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

use App\Framework\QrCode\QrCodeGenerator;
use App\Framework\QrCode\QrCodeRenderer;
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 "=== Analyze SVG QR Code ===\n\n";

// Read the SVG file
$svgPath = 'C:\Users\Mike\AppData\Local\Temp\Untitled.svg';
if (!file_exists($svgPath)) {
    echo "❌ SVG file not found at: {$svgPath}\n";
    echo "Trying to analyze based on the structure...\n\n";
    
    // Generate our own QR code for comparison
    $config = new QrCodeConfig(
        version: QrCodeVersion::fromNumber(1),
        errorCorrectionLevel: ErrorCorrectionLevel::M,
        encodingMode: EncodingMode::BYTE
    );
    
    // Try with different data to see what might be in the SVG
    $testData = 'HELLO WORLD';
    $matrix = QrCodeGenerator::generate($testData, $config);
    
    echo "Generated QR Code for: '{$testData}'\n";
    echo "Matrix size: {$matrix->getSize()}x{$matrix->getSize()}\n\n";
    
    // Analyze the matrix structure
    echo "=== Matrix Analysis ===\n";
    
    // Check format information
    $formatCols = [0, 1, 2, 3, 4, 5, 7, 8, 20, 19, 18, 17, 16, 15, 14];
    $formatH = '';
    foreach ($formatCols as $col) {
        $formatH .= $matrix->getModuleAt(8, $col)->isDark() ? '1' : '0';
    }
    
    $formatRows = [20, 19, 18, 17, 16, 15, 14, 8, 7, 5, 4, 3, 2, 1, 0];
    $formatV = '';
    foreach ($formatRows as $row) {
        $formatV .= $matrix->getModuleAt($row, 8)->isDark() ? '1' : '0';
    }
    
    echo "Format Information Horizontal: {$formatH}\n";
    echo "Format Information Vertical:   {$formatV}\n";
    echo "Match: " . ($formatH === $formatV ? "✅" : "❌") . "\n\n";
    
    // Decode format info
    $xorMask = "101010000010010";
    $unmasked = '';
    for ($i = 0; $i < 15; $i++) {
        $unmasked .= (int)$formatH[$i] ^ (int)$xorMask[$i];
    }
    
    $ecBits = substr($unmasked, 0, 2);
    $maskBits = substr($unmasked, 2, 5);
    $ecLevel = match($ecBits) {
        '01' => 'L',
        '00' => 'M',
        '11' => 'Q',
        '10' => 'H',
        default => 'UNKNOWN'
    };
    $maskPattern = bindec($maskBits);
    
    echo "Decoded Format Information:\n";
    echo "  EC Level: {$ecLevel}\n";
    echo "  Mask Pattern: {$maskPattern}\n\n";
    
    // Check finder patterns
    echo "=== Finder Pattern Check ===\n";
    $finderPatterns = [
        ['name' => 'Top-Left', 'row' => 0, 'col' => 0],
        ['name' => 'Top-Right', 'row' => 0, 'col' => 14],
        ['name' => 'Bottom-Left', 'row' => 14, 'col' => 0],
    ];
    
    $expectedFinder = [
        [1, 1, 1, 1, 1, 1, 1],
        [1, 0, 0, 0, 0, 0, 1],
        [1, 0, 1, 1, 1, 0, 1],
        [1, 0, 1, 1, 1, 0, 1],
        [1, 0, 1, 1, 1, 0, 1],
        [1, 0, 0, 0, 0, 0, 1],
        [1, 1, 1, 1, 1, 1, 1],
    ];
    
    foreach ($finderPatterns as $finder) {
        $errors = 0;
        for ($r = 0; $r < 7; $r++) {
            for ($c = 0; $c < 7; $c++) {
                $row = $finder['row'] + $r;
                $col = $finder['col'] + $c;
                $isDark = $matrix->getModuleAt($row, $col)->isDark();
                $expectedDark = $expectedFinder[$r][$c] === 1;
                
                if ($isDark !== $expectedDark) {
                    $errors++;
                }
            }
        }
        
        if ($errors === 0) {
            echo "✅ {$finder['name']} finder pattern correct\n";
        } else {
            echo "❌ {$finder['name']} finder pattern has {$errors} errors\n";
        }
    }
    
    echo "\n";
    
    // Check timing patterns
    echo "=== Timing Pattern Check ===\n";
    $timingOk = true;
    
    // Horizontal timing (row 6, cols 8-12)
    for ($col = 8; $col <= 12; $col++) {
        $expectedDark = (($col - 8) % 2) === 0;
        $isDark = $matrix->getModuleAt(6, $col)->isDark();
        if ($isDark !== $expectedDark) {
            $timingOk = false;
            break;
        }
    }
    
    // Vertical timing (col 6, rows 8-12)
    for ($row = 8; $row <= 12; $row++) {
        $expectedDark = (($row - 8) % 2) === 0;
        $isDark = $matrix->getModuleAt($row, 6)->isDark();
        if ($isDark !== $expectedDark) {
            $timingOk = false;
            break;
        }
    }
    
    if ($timingOk) {
        echo "✅ Timing patterns correct\n";
    } else {
        echo "❌ Timing patterns incorrect\n";
    }
    
    echo "\n";
    
    // Generate a new SVG for comparison
    $renderer = new QrCodeRenderer();
    $svg = $renderer->renderSvg($matrix);
    
    // Save for comparison
    $outputPath = __DIR__ . '/test-output.svg';
    file_put_contents($outputPath, $svg);
    echo "✅ Generated comparison SVG: {$outputPath}\n";
    echo "   Size: " . strlen($svg) . " bytes\n";
    
    // Check if there are any obvious issues
    echo "\n=== Potential Issues ===\n";
    
    // Check quiet zone
    $quietZoneOk = true;
    for ($i = 0; $i < 4; $i++) {
        // Check top quiet zone
        if ($matrix->getModuleAt($i, 10)->isDark()) {
            $quietZoneOk = false;
            break;
        }
        // Check left quiet zone
        if ($matrix->getModuleAt(10, $i)->isDark()) {
            $quietZoneOk = false;
            break;
        }
    }
    
    if ($quietZoneOk) {
        echo "✅ Quiet zone appears correct (checked sample)\n";
    } else {
        echo "❌ Quiet zone might have issues\n";
    }
    
    echo "\n";
    echo "=== Next Steps ===\n";
    echo "1. Compare the SVG structure with a working reference\n";
    echo "2. Check if format information is correctly placed\n";
    echo "3. Verify mask pattern application\n";
    echo "4. Test with a simpler QR code first\n";
    
} else {
    echo "✅ SVG file found\n";
    $svgContent = file_get_contents($svgPath);
    echo "Size: " . strlen($svgContent) . " bytes\n";
    
    // Parse SVG to extract QR code structure
    // Count rectangles
    $rectCount = substr_count($svgContent, '<rect');
    echo "Rectangles: {$rectCount}\n";
    
    // Extract positions
    preg_match_all('/x="([0-9.]+)"\s+y="([0-9.]+)"/', $svgContent, $matches);
    if (!empty($matches[1])) {
        $uniqueX = array_unique(array_map('floatval', $matches[1]));
        $uniqueY = array_unique(array_map('floatval', $matches[2]));
        
        sort($uniqueX);
        sort($uniqueY);
        
        echo "\nUnique X positions: " . count($uniqueX) . "\n";
        echo "Unique Y positions: " . count($uniqueY) . "\n";
        
        // Calculate module size
        if (count($uniqueX) > 1) {
            $moduleSize = $uniqueX[1] - $uniqueX[0];
            echo "Module size: {$moduleSize}px\n";
            
            // Calculate quiet zone
            $firstX = min($uniqueX);
            $quietZone = $firstX / $moduleSize;
            echo "Quiet zone: {$quietZone} modules\n";
            
            // Calculate matrix size
            $matrixSize = (max($uniqueX) - min($uniqueX)) / $moduleSize + 1;
            echo "Matrix size: {$matrixSize}x{$matrixSize}\n";
        }
    }
}