NextCloud OAuth2 support

packages/nodes-base/nodes/NextCloud/GenericFunctions.ts

@@ -0,0 +1,64 @@
+import {
+	IExecuteFunctions,
+	IHookFunctions,
+} from 'n8n-core';
+
+import {
+	IDataObject,
+} from 'n8n-workflow';
+import { OptionsWithUri } from 'request';
+
+/**
+ * Make an API request to NextCloud
+ *
+ * @param {IHookFunctions} this
+ * @param {string} method
+ * @param {string} url
+ * @param {object} body
+ * @returns {Promise<any>}
+ */
+export async function nextCloudApiRequest(this: IHookFunctions | IExecuteFunctions, method: string, endpoint: string, body: object | string | Buffer, headers?: object, encoding?: null | undefined, query?: object): Promise<any> { // tslint:disable-line:no-any
+	const options : OptionsWithUri = {
+		headers,
+		method,
+		body,
+		qs: {},
+		uri: '',
+		json: false,
+	};
+
+	if (encoding === null) {
+		options.encoding = null;
+	}
+
+	const authenticationMethod = this.getNodeParameter('authentication', 0);
+
+	try {
+		if (authenticationMethod === 'accessToken') {
+			const credentials = this.getCredentials('nextCloudApi');
+			if (credentials === undefined) {
+				throw new Error('No credentials got returned!');
+			}
+
+			options.auth = {
+				user: credentials.user as string,
+				pass: credentials.password as string,
+			};
+
+			options.uri = `${credentials.webDavUrl}/${encodeURI(endpoint)}`;
+
+			return await this.helpers.request(options);
+		} else {
+			const credentials = this.getCredentials('nextCloudOAuth2Api');
+			if (credentials === undefined) {
+				throw new Error('No credentials got returned!');
+			}
+
+			options.uri = `${credentials.webDavUrl}/${encodeURI(endpoint)}`;
+
+			return await this.helpers.requestOAuth2!.call(this, 'nextCloudOAuth2Api', options);
+		}
+	} catch (error) {
+		throw new Error(`NextCloud Error. Status Code: ${error.statusCode}. Message: ${error.message}`);
+	}
+}