<?php

declare(strict_types=1);

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

use App\Framework\QrCode\QrCodeGenerator;
use App\Framework\QrCode\ErrorCorrection\ReedSolomonEncoder;
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 "=== Encoding Logic Validation with Multiple Test Cases ===\n\n";

// Test cases with known expected results
$testCases = [
    [
        'data' => 'HELLO',
        'version' => 1,
        'level' => ErrorCorrectionLevel::M,
        'mode' => EncodingMode::BYTE,
        'description' => 'Short text, Version 1, Level M'
    ],
    [
        'data' => 'HELLO WORLD',
        'version' => 1,
        'level' => ErrorCorrectionLevel::M,
        'mode' => EncodingMode::BYTE,
        'description' => 'Medium text, Version 1, Level M'
    ],
    [
        'data' => 'A',
        'version' => 1,
        'level' => ErrorCorrectionLevel::M,
        'mode' => EncodingMode::BYTE,
        'description' => 'Single character, Version 1, Level M'
    ],
    [
        'data' => '12345',
        'version' => 1,
        'level' => ErrorCorrectionLevel::M,
        'mode' => EncodingMode::NUMERIC,
        'description' => 'Numeric data, Version 1, Level M'
    ],
    [
        'data' => 'HELLO123',
        'version' => 1,
        'level' => ErrorCorrectionLevel::M,
        'mode' => EncodingMode::ALPHANUMERIC,
        'description' => 'Alphanumeric data, Version 1, Level M'
    ],
];

foreach ($testCases as $testCase) {
    echo "=== Test: {$testCase['description']} ===\n";
    echo "Data: '{$testCase['data']}'\n";
    
    $config = new QrCodeConfig(
        version: QrCodeVersion::fromNumber($testCase['version']),
        errorCorrectionLevel: $testCase['level'],
        encodingMode: $testCase['mode']
    );
    
    // Generate QR code
    $matrix = QrCodeGenerator::generate($testCase['data'], $config);
    
    // Get encoding info
    $ecInfo = ReedSolomonEncoder::getECInfo(
        $config->version->getVersionNumber(),
        $config->errorCorrectionLevel->value
    );
    
    echo "Version: {$testCase['version']}\n";
    echo "Error Correction Level: {$testCase['level']->value}\n";
    echo "Encoding Mode: {$testCase['mode']->value}\n";
    echo "Data codewords: {$ecInfo['dataCodewords']}\n";
    echo "EC codewords: {$ecInfo['ecCodewords']}\n";
    echo "Total codewords: {$ecInfo['totalCodewords']}\n";
    echo "Matrix size: {$matrix->getSize()}x{$matrix->getSize()}\n";
    
    // Validate matrix structure
    $size = $matrix->getSize();
    $expectedSize = 21 + (($testCase['version'] - 1) * 4);
    
    if ($size === $expectedSize) {
        echo "✅ Matrix size correct\n";
    } else {
        echo "❌ Matrix size incorrect: got {$size}, expected {$expectedSize}\n";
    }
    
    // Check finder patterns
    $finderPatterns = [
        [0, 0], // Top-left
        [0, $size - 7], // Top-right
        [$size - 7, 0], // Bottom-left
    ];
    
    $finderPatternOk = true;
    foreach ($finderPatterns as [$startRow, $startCol]) {
        // Check finder pattern structure (7x7)
        for ($r = 0; $r < 7; $r++) {
            for ($c = 0; $c < 7; $c++) {
                $row = $startRow + $r;
                $col = $startCol + $c;
                $isDark = $matrix->getModuleAt($row, $col)->isDark();
                
                // Finder pattern: 3x3 dark square, 1x1 light, 3x3 dark
                $expectedDark = ($r < 3 && $c < 3) || ($r >= 4 && $c < 3) || 
                               ($r < 3 && $c >= 4) || ($r >= 4 && $c >= 4) ||
                               ($r === 0 || $r === 6 || $c === 0 || $c === 6);
                
                if ($isDark !== $expectedDark) {
                    $finderPatternOk = false;
                    break 2;
                }
            }
        }
    }
    
    if ($finderPatternOk) {
        echo "✅ Finder patterns correct\n";
    } else {
        echo "❌ Finder patterns incorrect\n";
    }
    
    // Check timing patterns
    $timingOk = true;
    $timingRow = 6;
    $timingCol = 6;
    
    // Horizontal timing (row 6, cols 8 to size-9)
    for ($col = 8; $col < $size - 8; $col++) {
        $expectedDark = (($col - 8) % 2) === 0;
        $isDark = $matrix->getModuleAt($timingRow, $col)->isDark();
        if ($isDark !== $expectedDark) {
            $timingOk = false;
            break;
        }
    }
    
    // Vertical timing (col 6, rows 8 to size-9)
    for ($row = 8; $row < $size - 8; $row++) {
        $expectedDark = (($row - 8) % 2) === 0;
        $isDark = $matrix->getModuleAt($row, $timingCol)->isDark();
        if ($isDark !== $expectedDark) {
            $timingOk = false;
            break;
        }
    }
    
    if ($timingOk) {
        echo "✅ Timing patterns correct\n";
    } else {
        echo "❌ Timing patterns incorrect\n";
    }
    
    echo "\n";
}

echo "=== Summary ===\n";
echo "All test cases completed. Check output above for any errors.\n";