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Filename : StringComparator.php

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<?php

namespace Facade\Ignition\Support;

class StringComparator
{
    public static function findClosestMatch(array $strings, string $input, int $sensitivity = 4): ?string
    {
        $closestDistance = -1;
        $closestMatch = null;

        foreach ($strings as $string) {
            $levenshteinDistance = levenshtein($input, $string);

            if ($levenshteinDistance === 0) {
                $closestMatch = $string;
                $closestDistance = 0;

                break;
            }

            if ($levenshteinDistance <= $closestDistance || $closestDistance < 0) {
                $closestMatch = $string;
                $closestDistance = $levenshteinDistance;
            }
        }

        if ($closestDistance <= $sensitivity) {
            return $closestMatch;
        }

        return null;
    }
}