class AttributesConverter

final class AttributesConverter {
    public static function convertAnyValue($value) : AnyValue {
        $result = new AnyValue();
        if (is_array($value)) {
            if (self::isSimpleArray($value)) {
                $values = new ArrayValue();
                foreach ($value as $element) {
                    
                    /** @psalm-suppress InvalidArgument */
                    $values->getValues()[] = self::convertAnyValue($element);
                }
                $result->setArrayValue($values);
            }
            else {
                $values = new KeyValueList();
                foreach ($value as $key => $element) {
                    
                    /** @psalm-suppress InvalidArgument */
                    $values->getValues()[] = new KeyValue([
                        'key' => $key,
                        'value' => self::convertAnyValue($element),
                    ]);
                }
                $result->setKvlistValue($values);
            }
        }
        if (is_int($value)) {
            $result->setIntValue($value);
        }
        if (is_bool($value)) {
            $result->setBoolValue($value);
        }
        if (is_float($value)) {
            $result->setDoubleValue($value);
        }
        if (is_string($value)) {
            if (self::isUtf8($value)) {
                $result->setStringValue($value);
            }
            else {
                $result->setBytesValue($value);
            }
        }
        return $result;
    }
    private static function isUtf8(string $value) : bool {
        return \extension_loaded('mbstring') ? \mb_check_encoding($value, 'UTF-8') : (bool) \preg_match('//u', $value);
    }
    
    /**
     * Test whether an array is simple (non-KeyValue)
     */
    public static function isSimpleArray(array $value) : bool {
        return $value === [] || array_key_first($value) === 0;
    }

}