#!/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.
 */

// Main script - choose configuration file
echo "\n";
echo "===========================================\n";
echo "       Image Size Finder Tool\n";
echo "===========================================\n\n";

echo "Choose which configuration to load:\n";
echo "  1) Whole site (sites/default/settings/image_folders.php)\n";
echo "  2) Shop/Categories (shop/includes/image_folders.php)\n";
echo "\nYour choice (1-2): ";

$configChoice = trim(fgets(STDIN));

switch ($configChoice) {
	case "1":
		require_once __DIR__ . "/sites/default/settings/image_folders.php";
		echo "✅ Loaded: Whole site configuration\n\n";
		break;
	case "2":
		require_once __DIR__ . "/shop/includes/image_folders.php";
		echo "✅ Loaded: Shop/Categories configuration\n\n";
		break;
	default:
		echo "\n❌ Invalid choice. Exiting.\n\n";
		exit(1);
}

// 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;
}

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";