// Type definitions for ldapjs 1.0
// Project: http://ldapjs.org
// Definitions by: Charles Villemure <https://github.com/cvillemure/>, Peter Kooijmans <https://github.com/peterkooijmans/>
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped

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

import { EventEmitter } from "events";

export interface Error {
	code: number;
	name: string;
	message: string;
}

export interface ErrorCallback {
	(error: Error): void;
}

export interface CompareCallback {
	(error: Error, matched?: boolean): void;
}

export interface ExopCallback {
	(error: Error, value: string, result?: any): void;
}

export interface CallBack {
	(error: Error, result?: any): void;
}

export interface ClientOptions {
	url: string;
	tlsOptions?: Object;
	socketPath?: string;
	log?: any;
	timeout?: number;
	connectTimeout?: number;
	idleTimeout?: number;
	reconnect?: boolean | {
		initialDelay?: number,
		maxDelay?: number,
		failAfter?: number
	};
	strictDN?: boolean;
	queueSize?: number;
	queueTimeout?: number;
	queueDisable?: boolean;
	bindDN?: string;
	bindCredentials?: string;
}

export interface SearchOptions {
	scope?: string;
	filter?: string;
	attributes?: string[];
	sizeLimit?: number;
	timeLimit?: number;
	derefAliases?: number;
	typesOnly?: boolean;
	paged?: boolean | {
		pageSize?: number;
		pagePause?: boolean;
	}
}

export interface Change {
	operation: string;
	modification: {
		[key: string]: any;
	};
}

export interface SearchCallBack {
	(error: Error, result: EventEmitter): void;
}

export type Control = any;

export interface Client extends EventEmitter {

	connected: boolean;

	/**
	 * Performs a simple authentication against the server.
	 *
	 * @param dn the DN to bind as.
	 * @param password the userPassword associated with name.
	 * @param controls (optional) either a Control or [Control].
	 * @param callback callback of the form f(err, res).
	 * @throws {TypeError} on invalid input.
	 */
	bind(dn: string, password: string, callback: CallBack): void;
	bind(dn: string, password: string, controls: Control | Array<Control>, callback: CallBack): void;

	/**
	 * Adds an entry to the LDAP server.
	 *
	 * Entry can be either [Attribute] or a plain JS object where the
	 * values are either a plain value or an array of values.  Any value (that's
	 * not an array) will get converted to a string, so keep that in mind.
	 *
	 * @param name the DN of the entry to add.
	 * @param entry an array of Attributes to be added or a JS object.
	 * @param controls (optional) either a Control or [Control].
	 * @param callback of the form f(err, res).
	 * @throws {TypeError} on invalid input.
	 */
	add(name: string, entry: Object, callback: ErrorCallback): void;
	add(name: string, entry: Object, controls: Control | Array<Control>, callback: ErrorCallback): void;

	/**
	 * Compares an attribute/value pair with an entry on the LDAP server.
	 *
	 * @param name the DN of the entry to compare attributes with.
	 * @param attr name of an attribute to check.
	 * @param value value of an attribute to check.
	 * @param controls (optional) either a Control or [Control].
	 * @param callback of the form f(err, boolean, res).
	 * @throws {TypeError} on invalid input.
	 */
	compare(name: string, attr: string, value: string, callback: CompareCallback): void;
	compare(name: string, attr: string, value: string, controls: Control | Array<Control>, callback: CompareCallback): void;

	/**
	 * Deletes an entry from the LDAP server.
	 *
	 * @param name the DN of the entry to delete.
	 * @param controls (optional) either a Control or [Control].
	 * @param callback of the form f(err, res).
	 * @throws {TypeError} on invalid input.
	 */
	del(name: string, callback: ErrorCallback): void;
	del(name: string, controls: Control | Array<Control>, callback: ErrorCallback): void;

	/**
	 * Performs an extended operation on the LDAP server.
	 *
	 * Pretty much none of the LDAP extended operations return an OID
	 * (responseName), so I just don't bother giving it back in the callback.
	 * It's on the third param in `res` if you need it.
	 *
	 * @param name the OID of the extended operation to perform.
	 * @param value value to pass in for this operation.
	 * @param controls (optional) either a Control or [Control].
	 * @param callback of the form f(err, value, res).
	 * @throws {TypeError} on invalid input.
	 */
	exop(name: string, value: string, callback: ExopCallback): void;
	exop(name: string, value: string, controls: Control | Array<Control>, callback: ExopCallback): void;

	/**
	 * Performs an LDAP modify against the server.
	 *
	 * @param name the DN of the entry to modify.
	 * @param change update to perform (can be [Change]).
	 * @param controls (optional) either a Control or [Control].
	 * @param callback of the form f(err, res).
	 * @throws {TypeError} on invalid input.
	 */
	modify(name: string, change: Change | Array<Change>, callback: ErrorCallback): void;
	modify(name: string, change: Change | Array<Change>, controls: Control | Array<Control>, callback: ErrorCallback): void;

	/**
	 * Performs an LDAP modifyDN against the server.
	 *
	 * This does not allow you to keep the old DN, as while the LDAP protocol
	 * has a facility for that, it's stupid. Just Search/Add.
	 *
	 * This will automatically deal with "new superior" logic.
	 *
	 * @param {String} name the DN of the entry to modify.
	 * @param {String} newName the new DN to move this entry to.
	 * @param {Control} controls (optional) either a Control or [Control].
	 * @param {Function} callback of the form f(err, res).
	 * @throws {TypeError} on invalid input.
	 */
	modifyDN(name: string, newName: string, callback: ErrorCallback): void;
	modifyDN(name: string, newName: string, controls: Control | Array<Control>, callback: ErrorCallback): void;

	/**
	 * Performs an LDAP search against the server.
	 *
	 * Note that the defaults for options are a 'base' search, if that's what
	 * you want you can just pass in a string for options and it will be treated
	 * as the search filter.  Also, you can either pass in programatic Filter
	 * objects or a filter string as the filter option.
	 *
	 * Note that this method is 'special' in that the callback 'res' param will
	 * have two important events on it, namely 'entry' and 'end' that you can hook
	 * to.  The former will emit a SearchEntry object for each record that comes
	 * back, and the latter will emit a normal LDAPResult object.
	 *
	 * @param {String} base the DN in the tree to start searching at.
	 * @param {SearchOptions} options parameters
	 * @param {Control} controls (optional) either a Control or [Control].
	 * @param {Function} callback of the form f(err, res).
	 * @throws {TypeError} on invalid input.
	 */
	search(base: string, options: SearchOptions, callback: SearchCallBack): void;
	search(base: string, options: SearchOptions, callback: SearchCallBack, _bypass: boolean): void;
	search(base: string, options: SearchOptions, controls: Control | Array<Control>, callback: SearchCallBack): void;
	search(base: string, options: SearchOptions, controls: Control | Array<Control>, callback: SearchCallBack, _bypass: boolean): void;

	/**
	 * Attempt to secure connection with StartTLS.
	 */
	starttls(options: Object, controls: Control | Array<Control>, callback: CallBack): void;
	starttls(options: Object, controls: Control | Array<Control>, callback: CallBack, _bypass: boolean): void;

	/**
	 * Unbinds this client from the LDAP server.
	 *
	 * Note that unbind does not have a response, so this callback is actually
	 * optional; either way, the client is disconnected.
	 *
	 * @param {Function} callback of the form f(err).
	 * @throws {TypeError} if you pass in callback as not a function.
	 */
	unbind(callback?: ErrorCallback): void;

	/**
	 * Disconnect from the LDAP server and do not allow reconnection.
	 *
	 * If the client is instantiated with proper reconnection options, it's
	 * possible to initiate new requests after a call to unbind since the client
	 * will attempt to reconnect in order to fulfill the request.
	 *
	 * Calling destroy will prevent any further reconnection from occurring.
	 *
	 * @param {Object} err (Optional) error that was cause of client destruction
	 */
	destroy(err?: any): void;
}

export function createClient(options?: ClientOptions): Client;