Caramel-CRM/app/Support/ApiDataTransformer.php

<?php

namespace App\Support;

class ApiDataTransformer
{
    /**
     * Convert array keys from snake_case to camelCase recursively
     */
    public static function snakeToCamel(array $data): array
    {
        $result = [];

        foreach ($data as $key => $value) {
            $camelKey = lcfirst(str_replace(' ', '', ucwords(str_replace('_', ' ', $key))));

            if (is_array($value)) {
                $result[$camelKey] = self::snakeToCamel($value);
            } elseif (is_object($value)) {
                $result[$camelKey] = self::snakeToCamel((array)$value);
            } else {
                $result[$camelKey] = $value;
            }
        }

        return $result;
    }

    /**
     * Convert array keys from camelCase to snake_case recursively
     */
    public static function camelToSnake(array $data): array
    {
        $result = [];

        foreach ($data as $key => $value) {
            $snakeKey = strtolower(preg_replace('/(?<!^)[A-Z]/', '_$0', $key));

            if (is_array($value)) {
                $result[$snakeKey] = self::camelToSnake($value);
            } elseif (is_object($value)) {
                $result[$snakeKey] = self::camelToSnake((array)$value);
            } else {
                $result[$snakeKey] = $value;
            }
        }

        return $result;
    }


    protected function parseGermanNumber($value)
    {
        if (is_numeric($value)) {
            return (float)$value;
        }

        if (!is_string($value)) {
            return 0.0;
        }

        // Remove all dots (thousands separators)
        $value = str_replace('.', '', $value);

        // Replace comma with dot for decimal separator
        $value = str_replace(',', '.', $value);

        return (float)$value;
    }
}