n8n/packages/nodes-base/nodes/Iterable/GenericFunctions.ts

import type {
	IDataObject,
	IExecuteFunctions,
	IHttpRequestMethods,
	IHttpRequestOptions,
	ILoadOptionsFunctions,
	JsonObject,
} from 'n8n-workflow';
import { NodeApiError } from 'n8n-workflow';

export async function iterableApiRequest(
	this: IExecuteFunctions | ILoadOptionsFunctions,
	method: IHttpRequestMethods,
	resource: string,
	body: any = {},
	qs: IDataObject = {},
	uri?: string,
	headers: IDataObject = {},
): Promise<any> {
	const credentials = await this.getCredentials('iterableApi');

	const options: IHttpRequestOptions = {
		headers: {
			'Content-Type': 'application/json',
		},
		method,
		body,
		qs,
		url: uri || `${credentials.region}/api${resource}`,
		json: true,
	};
	try {
		if (Object.keys(headers).length !== 0) {
			options.headers = Object.assign({}, options.headers, headers);
		}
		if (Object.keys(body as IDataObject).length === 0) {
			delete options.body;
		}
		return await this.helpers.httpRequestWithAuthentication.call(this, 'iterableApi', options);
	} catch (error) {
		throw new NodeApiError(this.getNode(), error as JsonObject);
	}
}

export async function iterableApiRequestAllItems(
	this: IExecuteFunctions | ILoadOptionsFunctions,
	propertyName: string,
	method: IHttpRequestMethods,
	endpoint: string,

	body: any = {},
	query: IDataObject = {},
): Promise<any> {
	const returnData: IDataObject[] = [];

	let responseData;
	query.maxResults = 100;

	do {
		responseData = await iterableApiRequest.call(this, method, endpoint, body, query);
		query.pageToken = responseData.nextPageToken;
		returnData.push.apply(returnData, responseData[propertyName] as IDataObject[]);
	} while (responseData.nextPageToken !== undefined && responseData.nextPageToken !== '');

	return returnData;
}