import { TacoFileParserName } from '../enums/taco-file-parser';
/**
 * Represents an input type for handlers, allowing flexibility between basic and file-based inputs.
 *
 * @typedef {Object} HandlerInput
 * @template Data - The type of data that the handler input can carry.
 * @property {BasicHandlerInput<Data> | FileBasedHandlerInput<Data>} input - The actual handler input, which can be either basic or file-based.
 *
 * @example
 * ```ts
 * // Usage with basic handler input
 * const basicHandlerInputObj: HandlerInput = {
 *  fetcher: 'my-fetcher',
 *  parser: 'my-parser',
 *  data: [],
 * }
 *
 * // Usage with file-based handler input
 * const fileBasedHandlerInputObj: HandlerInput = {
 *  fetcher: 'my-fetcher',
 *  parser: <TacoFileParserName>   // "taco:excel-file-parser" | "taco:csv-file-parser" | "taco:parquet-file-parser" | "taco:data-file-parser",
 *  data: [],
 *  name: 'table-name',
 * }
 * ```
 */
export type HandlerInput<Data = any> = BasicHandlerInput<Data> | FileBasedHandlerInput<Data> | IngestorHandlerInput<Data>;
/**
 * The object type sent by the connector app to handlers.
 *
 * The object is used to perform data extraction.
 *
 */
export interface BasicHandlerInput<Data> {
    /** File name of connector authenticator */
    auth?: string;
    /** File name of connector fetcher */
    fetcher: string;
    /** File name of connector parser */
    parser: string;
    /** Arbitrary data sent to the connector fetcher */
    data: Data;
}
export declare function isBasicHandlerInput<D>(input: unknown): input is BasicHandlerInput<D>;
/**
 * The object type sent by the connector app to handlers for data source with large data.
 */
export interface FileBasedHandlerInput<Data> extends BasicHandlerInput<Data> {
    /** Built-in parser name */
    parser: TacoFileParserName;
    /** Identifier of source object, will be used as table name */
    name: string;
}
export declare function isFileBasedHandlerInput<D>(input: unknown): input is FileBasedHandlerInput<D>;
export interface IngestorHandlerInput<Data> {
    ingestor: string;
    data: Data;
}
export declare function isIngestorHandlerInput<D>(input: unknown): input is IngestorHandlerInput<D>;
export declare function isValidHandlerInput(input: unknown): input is HandlerInput;