<?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 "=== Finder Pattern Validation ===\n\n";

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

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

echo "Matrix size: {$size}x{$size}\n\n";

// Expected finder pattern (7x7)
// 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

$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],
];

$finderPositions = [
    ['name' => 'Top-Left', 'row' => 0, 'col' => 0],
    ['name' => 'Top-Right', 'row' => 0, 'col' => $size - 7],
    ['name' => 'Bottom-Left', 'row' => $size - 7, 'col' => 0],
];

foreach ($finderPositions as $finder) {
    echo "=== {$finder['name']} Finder Pattern ===\n";
    $errors = 0;
    
    for ($r = 0; $r < 7; $r++) {
        $row = $finder['row'] + $r;
        $bits = '';
        $expectedBits = '';
        
        for ($c = 0; $c < 7; $c++) {
            $col = $finder['col'] + $c;
            $isDark = $matrix->getModuleAt($row, $col)->isDark();
            $expectedDark = $expectedFinder[$r][$c] === 1;
            
            $bits .= $isDark ? '1' : '0';
            $expectedBits .= $expectedDark ? '1' : '0';
            
            if ($isDark !== $expectedDark) {
                $errors++;
            }
        }
        
        echo "Row {$r}: {$bits} (expected: {$expectedBits})";
        if ($bits === $expectedBits) {
            echo " ✅\n";
        } else {
            echo " ❌\n";
        }
    }
    
    if ($errors === 0) {
        echo "✅ {$finder['name']} finder pattern is CORRECT\n\n";
    } else {
        echo "❌ {$finder['name']} finder pattern has {$errors} errors\n\n";
    }
}