n8n/packages/nodes-base/nodes/Aws/Comprehend/GenericFunctions.ts

import type {
	IExecuteFunctions,
	IHookFunctions,
	ILoadOptionsFunctions,
	IWebhookFunctions,
	IHttpRequestOptions,
	IHttpRequestMethods,
} from 'n8n-workflow';
import { parseString } from 'xml2js';
import { getAwsCredentials } from '../GenericFunctions';

export async function awsApiRequest(
	this: IHookFunctions | IExecuteFunctions | ILoadOptionsFunctions | IWebhookFunctions,
	service: string,
	method: IHttpRequestMethods,
	path: string,
	body?: string,
	headers?: object,
): Promise<any> {
	const { credentials, credentialsType } = await getAwsCredentials(this);

	const requestOptions = {
		qs: {
			service,
			path,
		},
		method,
		body,
		url: '',
		headers,
		region: credentials?.region as string,
	} as IHttpRequestOptions;
	return await this.helpers.requestWithAuthentication.call(this, credentialsType, requestOptions);
}

export async function awsApiRequestREST(
	this: IHookFunctions | IExecuteFunctions | ILoadOptionsFunctions,
	service: string,
	method: IHttpRequestMethods,
	path: string,
	body?: string,
	headers?: object,
): Promise<any> {
	const response = await awsApiRequest.call(this, service, method, path, body, headers);
	try {
		return JSON.parse(response as string);
	} catch (error) {
		return response;
	}
}

export async function awsApiRequestSOAP(
	this: IHookFunctions | IExecuteFunctions | ILoadOptionsFunctions | IWebhookFunctions,
	service: string,
	method: IHttpRequestMethods,
	path: string,
	body?: string,
	headers?: object,
): Promise<any> {
	const response = await awsApiRequest.call(this, service, method, path, body, headers);
	try {
		return await new Promise((resolve, reject) => {
			parseString(response as string, { explicitArray: false }, (err, data) => {
				if (err) {
					return reject(err);
				}
				resolve(data);
			});
		});
	} catch (error) {
		return response;
	}
}