private function tryDeserializeError()

in src/OpenSearch/Connections/Connection.php [731:777]
32 lines of code
9 McCabe index (conditional complexity)

    private function tryDeserializeError(array $response, string $errorClass): OpenSearchException
    {
        $error = $this->serializer->deserialize($response['body'], $response['transfer_stats']);
        if (is_array($error) === true) {
            if (isset($error['error']) === false) {
                // <2.0 "i just blew up" nonstructured exception
                // $error is an array but we don't know the format, reuse the response body instead
                // added json_encode to convert into a string
                return new $errorClass(json_encode($response['body']), (int) $response['status']);
            }

            // 2.0 structured exceptions
            if (is_array($error['error']) && array_key_exists('reason', $error['error']) === true) {
                // Try to use root cause first (only grabs the first root cause)
                $root = $error['error']['root_cause'];
                if (isset($root) && isset($root[0])) {
                    $cause = $root[0]['reason'];
                    $type = $root[0]['type'];
                } else {
                    $cause = $error['error']['reason'];
                    $type = $error['error']['type'];
                }
                // added json_encode to convert into a string
                $original = new $errorClass(json_encode($response['body']), $response['status']);

                return new $errorClass("$type: $cause", (int) $response['status'], $original);
            }
            // <2.0 semi-structured exceptions
            // added json_encode to convert into a string
            $original = new $errorClass(json_encode($response['body']), $response['status']);

            $errorEncoded = $error['error'];
            if (is_array($errorEncoded)) {
                $errorEncoded = json_encode($errorEncoded);
            }
            return new $errorClass($errorEncoded, (int) $response['status'], $original);
        }

        // if responseBody is not string, we convert it so it can be used as Exception message
        $responseBody = $response['body'];
        if (!is_string($responseBody)) {
            $responseBody = json_encode($responseBody);
        }

        // <2.0 "i just blew up" nonstructured exception
        return new $errorClass($responseBody);
    }