<?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 "=== Mask Application Verification ===\n\n";

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

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

// Get mask pattern from format info
$formatCols = [0, 1, 2, 3, 4, 5, 7, 8, $size - 1, $size - 2, $size - 3, $size - 4, $size - 5, $size - 6, $size - 7];
$formatH = '';
foreach ($formatCols as $col) {
    $formatH .= $matrix->getModuleAt(8, $col)->isDark() ? '1' : '0';
}

$xorMask = "101010000010010";
$unmasked = '';
for ($i = 0; $i < 15; $i++) {
    $unmasked .= (int)$formatH[$i] ^ (int)$xorMask[$i];
}

$maskBits = substr($unmasked, 2, 3);
$maskPattern = bindec($maskBits);

echo "Detected mask pattern: {$maskPattern}\n\n";

// Test mask application by checking if unmasking gives correct data
use App\Framework\QrCode\Masking\MaskPattern as MaskPatternEnum;

$mask = match($maskPattern) {
    0 => MaskPatternEnum::PATTERN_0,
    1 => MaskPatternEnum::PATTERN_1,
    2 => MaskPatternEnum::PATTERN_2,
    3 => MaskPatternEnum::PATTERN_3,
    4 => MaskPatternEnum::PATTERN_4,
    5 => MaskPatternEnum::PATTERN_5,
    6 => MaskPatternEnum::PATTERN_6,
    7 => MaskPatternEnum::PATTERN_7,
};

// Read first data bit position (20,20)
$testRow = 20;
$testCol = 20;

// Check if this should be masked
$shouldInvert = $mask->shouldInvert($testRow, $testCol);
echo "Testing position ({$testRow}, {$testCol}):\n";
echo "  Mask pattern {$maskPattern} should invert: " . ($shouldInvert ? 'YES' : 'NO') . "\n";

// Read masked value
$maskedValue = $matrix->getModuleAt($testRow, $testCol)->isDark() ? 1 : 0;
echo "  Masked value in matrix: {$maskedValue}\n";

// Unmask
$unmaskedValue = $shouldInvert ? (1 - $maskedValue) : $maskedValue;
echo "  Unmasked value: {$unmaskedValue}\n\n";

// Now test with the actual URL
echo "=== Testing with URL ===\n";
$url = 'https://localhost/';
$urlConfig = QrCodeConfig::autoSize($url, ErrorCorrectionLevel::M);
$urlMatrix = QrCodeGenerator::generate($url, $urlConfig);

$urlSize = $urlMatrix->getSize();

// Get mask for URL
$urlFormatCols = [0, 1, 2, 3, 4, 5, 7, 8, $urlSize - 1, $urlSize - 2, $urlSize - 3, $urlSize - 4, $urlSize - 5, $urlSize - 6, $urlSize - 7];
$urlFormatH = '';
foreach ($urlFormatCols as $col) {
    $urlFormatH .= $urlMatrix->getModuleAt(8, $col)->isDark() ? '1' : '0';
}

$urlUnmasked = '';
for ($i = 0; $i < 15; $i++) {
    $urlUnmasked .= (int)$urlFormatH[$i] ^ (int)$xorMask[$i];
}

$urlMaskBits = substr($urlUnmasked, 2, 3);
$urlMaskPattern = bindec($urlMaskBits);

echo "URL mask pattern: {$urlMaskPattern}\n";
echo "URL matrix size: {$urlSize}x{$urlSize}\n\n";

// Generate SVG for URL
$renderer = new \App\Framework\QrCode\QrCodeRenderer();
$urlSvg = $renderer->renderSvg($urlMatrix);
$urlSvgFile = __DIR__ . '/url-qrcode-test.svg';
file_put_contents($urlSvgFile, $urlSvg);
echo "URL QR Code saved to: {$urlSvgFile}\n\n";

echo "✅ QR Code generation complete. Please test with a scanner.\n";