#!/usr/bin/env php
<?php
/**
 * Image Aspect Ratio Finder
 *
 * This script helps find image sizes from image_folders.php
 * with matching aspect ratios.
 */

// 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 normalized aspect ratio (1/x format)
function getNormalizedAspectRatio($width, $height)
{
	// Calculate the ratio as 1/x where x = height/width
	$ratio = $width / $height;

	if ($ratio >= 1) {
		// Landscape or square: represent as 1/x where x <= 1
		$normalized = 1 / $ratio;
		$display = "1/" . number_format($ratio, 3);
	} else {
		// Portrait: represent as 1/x where x > 1
		$normalized = $ratio;
		$display = "1/" . number_format(1 / $ratio, 3);
	}

	// Simplified ratio for display
	$gcd = function ($a, $b) use (&$gcd) {
		return $b ? $gcd($b, $a % $b) : $a;
	};
	$divisor = $gcd($width, $height);
	$simplified = $width / $divisor . ":" . $height / $divisor;

	return [
		"ratio" => $ratio,
		"normalized" => $normalized,
		"display" => $display,
		"simplified" => $simplified,
	];
}

// Function to calculate aspect ratio similarity (0-1, where 1 is perfect match)
function calculateAspectRatioSimilarity($targetRatio, $existingRatio)
{
	// Calculate the absolute difference between ratios
	$difference = abs($targetRatio - $existingRatio);

	// Normalize the difference (smaller difference = higher similarity)
	// Using an exponential decay function for better scoring
	$similarity = exp(-$difference * 5);

	return $similarity;
}

// 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"]) &&
				isset($config["height"]) &&
				$config["height"] !== null
			) {
				$allSizes[] = [
					"name" => $sizeName,
					"category" => $category,
					"width" => $config["width"],
					"height" => $config["height"],
					"crop" => $config["crop"] ?? false,
					"forced" => $config["forced"] ?? false,
					"path" => $config["path"] ?? "",
				];
			}
		}
	}

	return $allSizes;
}

// Main script
echo "\n";
echo "===========================================\n";
echo "    Image Aspect Ratio 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 = getNormalizedAspectRatio(
	$dimensions["width"],
	$dimensions["height"],
);
echo "   Aspect ratio: {$targetRatio["simplified"]} = {$targetRatio["display"]}\n\n";

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

// Calculate similarity for each size based on aspect ratio only
$matches = [];
$seenRatios = []; // Track unique aspect ratios

foreach ($allSizes as $size) {
	$existingRatio = getNormalizedAspectRatio($size["width"], $size["height"]);
	$similarity = calculateAspectRatioSimilarity(
		$targetRatio["ratio"],
		$existingRatio["ratio"],
	);

	$ratioKey = $existingRatio["display"];

	// Store the match
	$match = array_merge($size, [
		"aspect_ratio" => $existingRatio["simplified"],
		"aspect_ratio_display" => $existingRatio["display"],
		"aspect_ratio_value" => $existingRatio["ratio"],
		"similarity" => $similarity,
	]);

	$matches[] = $match;

	// Track unique aspect ratios for summary
	if (!isset($seenRatios[$ratioKey])) {
		$seenRatios[$ratioKey] = [
			"ratio" => $existingRatio,
			"count" => 0,
			"sizes" => [],
		];
	}
	$seenRatios[$ratioKey]["count"]++;
	$seenRatios[$ratioKey]["sizes"][] = $match;
}

// Sort by similarity (best matches first)
usort($matches, function ($a, $b) {
	$simDiff = $b["similarity"] <=> $a["similarity"];
	if ($simDiff !== 0) {
		return $simDiff;
	}
	// If similarity is the same, sort by name
	return $a["name"] <=> $b["name"];
});

// Display results grouped by aspect ratio
echo "🔍 Image Sizes Grouped by Aspect Ratio:\n";
echo "===========================================\n\n";

// Group matches by aspect ratio for display
$groupedMatches = [];
foreach ($matches as $match) {
	$ratioKey = $match["aspect_ratio_display"];
	if (!isset($groupedMatches[$ratioKey])) {
		$groupedMatches[$ratioKey] = [
			"ratio" => $match,
			"sizes" => [],
		];
	}
	$groupedMatches[$ratioKey]["sizes"][] = $match;
}

// Sort groups by similarity
uasort($groupedMatches, function ($a, $b) {
	return $b["ratio"]["similarity"] <=> $a["ratio"]["similarity"];
});

// Display top 5 aspect ratio groups
$topGroups = array_slice($groupedMatches, 0, 5);
$displayCount = 0;

foreach ($topGroups as $ratioKey => $group) {
	$firstMatch = $group["ratio"];
	$matchPercent = round($firstMatch["similarity"] * 100, 1);
	$matchBar = str_repeat("█", min(20, (int) ($matchPercent / 5)));

	echo "📊 Aspect Ratio: {$firstMatch["aspect_ratio"]} = {$firstMatch["aspect_ratio_display"]}\n";
	echo "   Match: {$matchBar} {$matchPercent}%\n";
	echo "   Found " . count($group["sizes"]) . " size(s):\n\n";

	foreach ($group["sizes"] as $match) {
		echo "   • \033[1m{$match["name"]}\033[0m ({$match["category"]})\n";
		echo "     Size: {$match["width"]}x{$match["height"]}px";
		if ($match["crop"]) {
			echo " | ✂️  Cropped";
			if ($match["forced"]) {
				echo " (Forced)";
			}
		}
		echo "\n";
		echo "     Path: {$match["path"]}\n\n";

		$displayCount++;
		if ($displayCount >= 15) {
			break 2; // Stop after 15 total sizes
		}
	}

	echo "\n";
}

// Check for exact aspect ratio matches
$exactMatches = array_filter($matches, function ($m) use ($targetRatio) {
	return abs($m["aspect_ratio_value"] - $targetRatio["ratio"]) < 0.001;
});

if (!empty($exactMatches)) {
	echo "\n✅ EXACT ASPECT RATIO MATCHES FOUND!\n";
	echo "===========================================\n";
	echo "These sizes have the exact same aspect ratio:\n\n";
	foreach ($exactMatches as $match) {
		echo "   • {$match["name"]} ({$match["width"]}x{$match["height"]}px) - {$match["category"]}\n";
	}
	echo "\n";
}

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

if (!empty($exactMatches)) {
	echo "✅ PERFECT MATCHES: " .
		count($exactMatches) .
		" size(s) with exact aspect ratio\n";
	echo "   Use any of the sizes listed above.\n";
} else {
	$bestMatch = $matches[0];
	$matchPercent = round($bestMatch["similarity"] * 100, 1);

	if ($matchPercent >= 95) {
		echo "✅ VERY CLOSE: '{$bestMatch["name"]}' has nearly identical aspect ratio ({$matchPercent}% match)\n";
		echo "   Aspect ratio: {$bestMatch["aspect_ratio"]} = {$bestMatch["aspect_ratio_display"]}\n";
		echo "   You can probably use this size.\n";
	} elseif ($matchPercent >= 80) {
		echo "⚠️  SIMILAR: '{$bestMatch["name"]}' has a similar aspect ratio ({$matchPercent}% match)\n";
		echo "   Aspect ratio: {$bestMatch["aspect_ratio"]} = {$bestMatch["aspect_ratio_display"]}\n";
		echo "   Evaluate if this aspect ratio meets your needs.\n";
	} else {
		echo "🆕 CREATE NEW: No close aspect ratio matches found (best: {$matchPercent}%)\n";
		echo "   Your aspect ratio {$targetRatio["display"]} is unique.\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";