#!/usr/bin/env php
<?php
/**
 * Image Size Finder
 *
 * This script helps find the most suitable image size from image_folders.php
 * based on the proportions you provide.
 */

// Include the image folders configuration
require_once __DIR__ . '/sites/default/settings/image_folders.php';

// Function to parse dimension input like "565x369px"
function parseDimensions($input)
{
    $input = strtolower(trim($input));
    $input = str_replace('px', '', $input);

    if (preg_match('/^(\d+)\s*x\s*(\d+)$/i', $input, $matches)) {
        return [
            'width' => (int) $matches[1],
            'height' => (int) $matches[2],
        ];
    }

    return null;
}

// Function to calculate aspect ratio
function getAspectRatio($width, $height)
{
    $gcd = function ($a, $b) use (&$gcd) {
        return $b ? $gcd($b, $a % $b) : $a;
    };
    $divisor = $gcd($width, $height);
    return [
        'ratio' => $width / $height,
        'simplified' => $width / $divisor . ':' . $height / $divisor,
    ];
}

// Function to calculate similarity score
function calculateSimilarity($target, $existing)
{
    // Calculate aspect ratio difference (0-1, where 0 is perfect match)
    $ratioScore = abs($target['ratio'] - $existing['ratio']) / max($target['ratio'], $existing['ratio']);

    // Calculate size difference (0-1, where 0 is perfect match)
    $targetSize = $target['width'] * $target['height'];
    $existingSize = $existing['width'] * $existing['height'];
    $sizeScore = abs($targetSize - $existingSize) / max($targetSize, $existingSize);

    // Calculate dimension differences
    $widthScore = abs($target['width'] - $existing['width']) / max($target['width'], $existing['width']);
    $heightScore = abs($target['height'] - $existing['height']) / max($target['height'], $existing['height']);

    // Weighted score (aspect ratio is most important)
    $totalScore = $ratioScore * 0.5 + $sizeScore * 0.2 + $widthScore * 0.15 + $heightScore * 0.15;

    return 1 - $totalScore; // Convert to similarity (higher is better)
}

// Collect all image sizes from all categories
function collectAllImageSizes($image_folders)
{
    $allSizes = [];

    foreach ($image_folders as $category => $sizes) {
        if ($category === 'cms_images') {
            continue; // Skip cms_images as it's a merged array
        }

        foreach ($sizes as $sizeName => $config) {
            if (isset($config['width'])) {
                $allSizes[] = [
                    'name' => $sizeName,
                    'category' => $category,
                    'width' => $config['width'],
                    'height' => $config['height'] ?? null,
                    'crop' => $config['crop'] ?? false,
                    'forced' => $config['forced'] ?? false,
                    'path' => $config['path'] ?? '',
                ];
            }
        }
    }

    return $allSizes;
}

// Main script
echo "\n";
echo "===========================================\n";
echo "       Image Size Finder Tool\n";
echo "===========================================\n\n";

echo 'Enter image dimensions (e.g., 565x369px or 1920x1080): ';
$input = trim(fgets(STDIN));

$dimensions = parseDimensions($input);

if (!$dimensions) {
    echo "\n❌ Invalid format! Please use format like: 565x369px or 1920x1080\n\n";
    exit(1);
}

echo "\n📐 Analyzing dimensions: {$dimensions['width']}x{$dimensions['height']}px\n";

$targetRatio = getAspectRatio($dimensions['width'], $dimensions['height']);
echo "   Aspect ratio: {$targetRatio['simplified']} ({$targetRatio['ratio']})\n\n";

// Collect all image sizes
$allSizes = collectAllImageSizes($image_folders);

// Calculate similarity for each size
$matches = [];
foreach ($allSizes as $size) {
    if ($size['height'] === null) {
        // Skip sizes without height (proportional scaling only)
        continue;
    }

    $existingRatio = getAspectRatio($size['width'], $size['height']);
    $similarity = calculateSimilarity(
        array_merge($dimensions, ['ratio' => $targetRatio['ratio']]),
        array_merge($size, ['ratio' => $existingRatio['ratio']]),
    );

    $matches[] = array_merge($size, [
        'aspect_ratio' => $existingRatio['simplified'],
        'aspect_ratio_value' => $existingRatio['ratio'],
        'similarity' => $similarity,
    ]);
}

// Sort by similarity (best matches first)
usort($matches, function ($a, $b) {
    return $b['similarity'] <=> $a['similarity'];
});

// Display results
echo "🔍 Top 10 Most Similar Existing Sizes:\n";
echo "===========================================\n\n";

$topMatches = array_slice($matches, 0, 10);

foreach ($topMatches as $index => $match) {
    $matchPercent = round($match['similarity'] * 100, 1);
    $matchBar = str_repeat('█', (int) ($matchPercent / 5));

    echo $index + 1 . '. ';
    echo "\033[1m{$match['name']}\033[0m";
    echo " (Category: {$match['category']})\n";
    echo "   Size: {$match['width']}x{$match['height']}px\n";
    echo "   Aspect Ratio: {$match['aspect_ratio']}\n";
    echo "   Match: {$matchBar} {$matchPercent}%\n";
    echo "   Path: {$match['path']}\n";

    if ($match['crop']) {
        echo '   ✂️  Cropped: Yes';
        if ($match['forced']) {
            echo ' (Forced)';
        }
        echo "\n";
    }

    echo "\n";
}

// Check for exact matches
$exactMatches = array_filter($matches, function ($m) use ($dimensions) {
    return $m['width'] === $dimensions['width'] && $m['height'] === $dimensions['height'];
});

if (!empty($exactMatches)) {
    echo "\n✅ EXACT MATCH FOUND!\n";
    echo "===========================================\n";
    foreach ($exactMatches as $match) {
        echo "   • {$match['name']} ({$match['category']})\n";
    }
    echo "\n";
}

// Recommendations
echo "\n💡 Recommendations:\n";
echo "===========================================\n";

$bestMatch = $topMatches[0];
$matchPercent = round($bestMatch['similarity'] * 100, 1);

if ($matchPercent >= 95) {
    echo "✅ USE EXISTING: '{$bestMatch['name']}' is very similar ({$matchPercent}% match)\n";
    echo "   You can probably use this size instead.\n";
} elseif ($matchPercent >= 80) {
    echo "⚠️  CONSIDER: '{$bestMatch['name']}' is fairly similar ({$matchPercent}% match)\n";
    echo "   Evaluate if this size meets your needs or create a new one.\n";
} else {
    echo "🆕 CREATE NEW: No close matches found (best match: {$matchPercent}%)\n";
    echo "   Consider creating a new image size configuration.\n";
}

echo "\n";
echo "Would you like to:\n";
echo "  1) Use an existing size\n";
echo "  2) Create a new size\n";
echo "  3) Exit\n";
echo "\nYour choice (1-3): ";

$choice = trim(fgets(STDIN));

switch ($choice) {
    case '1':
        echo "\n✅ Great! Use the size name from the list above in your image configuration.\n";
        break;
    case '2':
        echo "\n📝 To create a new size, add it to: sites/default/settings/image_folders.php\n";
        echo "   Use this template:\n\n";
        echo "   'your_size_name' => [\n";
        echo "       'path' => 'uploads/images/your_path',\n";
        echo "       'width' => {$dimensions['width']},\n";
        echo "       'height' => {$dimensions['height']},\n";
        echo "       'forced' => true,\n";
        echo "       'crop' => true,\n";
        echo "   ],\n\n";
        break;
    case '3':
        echo "\n👋 Goodbye!\n";
        break;
    default:
        echo "\n❌ Invalid choice.\n";
}

echo "\n";