/// <reference types="node" />

import { Encodable } from "rsocket-types";

/**
 * Commonly used subset of the allowed Node Buffer Encoder types.
 */
export interface Encoder<T extends Encodable> {
    byteLength: (value: Encodable) => number;
    encode: (value: Encodable, buffer: Buffer, start: number, end: number) => number;
    decode: (buffer: Buffer, start: number, end: number) => T;
}

/**
 * The Encoders object specifies how values should be serialized/deserialized
 * to/from binary.
 */
export interface Encoders<T extends Encodable> {
    data: Encoder<T>;
    dataMimeType: Encoder<string>;
    message: Encoder<string>;
    metadata: Encoder<T>;
    metadataMimeType: Encoder<string>;
    resumeToken: Encoder<T>;
}

export const UTF8Encoder: Encoder<string>;

export const BufferEncoder: Encoder<Buffer>;

/**
 * Encode all values as UTF8 strings.
 */
export const Utf8Encoders: Encoders<string>;

/**
 * Encode all values as buffers.
 */
export const BufferEncoders: Encoders<Buffer>;