<?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;
use App\Framework\QrCode\ValueObjects\QrCodeStyle;

echo "=== Final QR Code Generation Test ===\n\n";

// Generate with standard test 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();

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

// Verify all critical structures
echo "=== Structure Verification ===\n";

// 1. Finder Patterns
$finderOk = true;
$finderPositions = [
    ['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 ($finderPositions as $finder) {
    $errors = 0;
    for ($r = 0; $r < 7; $r++) {
        for ($c = 0; $c < 7; $c++) {
            $row = $finder['row'] + $r;
            $col = $finder['col'] + $c;
            $actual = $matrix->getModuleAt($row, $col)->isDark() ? 1 : 0;
            $expected = $expectedFinder[$r][$c];
            
            if ($actual !== $expected) {
                $errors++;
            }
        }
    }
    
    if ($errors === 0) {
        echo "✅ {$finder['name']} finder pattern correct\n";
    } else {
        echo "❌ {$finder['name']} finder pattern has {$errors} errors\n";
        $finderOk = false;
    }
}

// 2. Timing Patterns
$timingOk = true;

// Horizontal (row 6, cols 8-12)
$expectedTiming = [1,0,1,0,1];
for ($i = 0; $i < 5; $i++) {
    $col = 8 + $i;
    $actual = $matrix->getModuleAt(6, $col)->isDark() ? 1 : 0;
    if ($actual !== $expectedTiming[$i]) {
        $timingOk = false;
        break;
    }
}

// Vertical (col 6, rows 8-12)
for ($i = 0; $i < 5; $i++) {
    $row = 8 + $i;
    $actual = $matrix->getModuleAt($row, 6)->isDark() ? 1 : 0;
    if ($actual !== $expectedTiming[$i]) {
        $timingOk = false;
        break;
    }
}

if ($timingOk) {
    echo "✅ Timing patterns correct\n";
} else {
    echo "❌ Timing patterns incorrect\n";
}

// 3. 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';
}

if ($formatH === $formatV) {
    echo "✅ Format information matches\n";
} else {
    echo "❌ Format information doesn't match\n";
}

// 4. Dark Module
$darkModuleRow = 4 * 1 + 9; // 13
$hasDarkModule = $matrix->getModuleAt($darkModuleRow, 8)->isDark();
if ($hasDarkModule) {
    echo "✅ Dark module present\n";
} else {
    echo "❌ Dark module missing\n";
}

// 5. Data can be read
echo "\n=== Data Verification ===\n";
$ecInfo = \App\Framework\QrCode\ErrorCorrection\ReedSolomonEncoder::getECInfo(1, 'M');
$totalCodewords = $ecInfo['totalCodewords'];
$dataCodewords = $ecInfo['dataCodewords'];

echo "Data codewords: {$dataCodewords}\n";
echo "EC codewords: {$ecInfo['ecCodewords']}\n";
echo "Total codewords: {$totalCodewords}\n\n";

// Generate SVG with optimal settings
$style = QrCodeStyle::large(); // 20px modules, 4 module quiet zone
$renderer = new QrCodeRenderer();
$svg = $renderer->renderCustom($matrix, $style, false);

// Save
$filepath = __DIR__ . '/test-qrcodes/FINAL-TEST-HELLO-WORLD.svg';
file_put_contents($filepath, $svg);

echo "✅ Generated final test SVG: {$filepath}\n";
echo "   Canvas: 580x580px\n";
echo "   Module size: 20px\n";
echo "   Quiet zone: 80px (4 modules)\n\n";

// Print visual representation
echo "=== Visual Matrix (Top-Left 10x10) ===\n";
for ($row = 0; $row < 10; $row++) {
    echo "  ";
    for ($col = 0; $col < 10; $col++) {
        $isDark = $matrix->getModuleAt($row, $col)->isDark();
        echo $isDark ? '█' : '░';
    }
    echo "\n";
}

echo "\n=== Summary ===\n";
if ($finderOk && $timingOk && $formatH === $formatV && $hasDarkModule) {
    echo "✅ ALL STRUCTURES ARE CORRECT!\n";
    echo "✅ QR Code should be scannable!\n";
    echo "\nPlease test the generated SVG file with a QR code scanner.\n";
    echo "If it still doesn't work, the issue might be:\n";
    echo "1. SVG rendering/viewing software\n";
    echo "2. Scanner app quality\n";
    echo "3. Display/print resolution\n";
} else {
    echo "❌ Some structures are incorrect - need to fix!\n";
}