✨ TravisCI-Node (#756)

* ✨ TravisCI-Node

* ⚡ Small improvement

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

@@ -0,0 +1,78 @@
+import {
+	OptionsWithUri,
+} from 'request';
+
+import {
+	IExecuteFunctions,
+	IExecuteSingleFunctions,
+	IHookFunctions,
+	ILoadOptionsFunctions,
+} from 'n8n-core';
+
+import {
+	IDataObject,
+} from 'n8n-workflow';
+
+import {
+	get,
+ } from 'lodash';
+
+ import * as querystring from 'querystring';
+
+export async function travisciApiRequest(this: IHookFunctions | IExecuteFunctions | IExecuteSingleFunctions | ILoadOptionsFunctions, method: string, resource: string, body: any = {}, qs: IDataObject = {}, uri?: string, option: IDataObject = {}): Promise<any> { // tslint:disable-line:no-any
+	const credentials = this.getCredentials('travisCiApi');
+	if (credentials === undefined) {
+		throw new Error('No credentials got returned!');
+	}
+	let options: OptionsWithUri = {
+		headers: {
+			'Travis-API-Version': '3',
+			'Accept': 'application/json',
+			'Content-Type': 'application.json',
+			'Authorization': `token ${credentials.apiToken}`,
+		},
+		method,
+		qs,
+		body,
+		uri: uri ||`https://api.travis-ci.com${resource}`,
+		json: true
+	};
+	options = Object.assign({}, options, option);
+	if (Object.keys(options.body).length === 0) {
+		delete options.body;
+	}
+	try {
+		return await this.helpers.request!(options);
+	} catch (err) {
+		if (err.response && err.response.body && err.response.body.error_message) {
+			// Try to return the error prettier
+			throw new Error(`TravisCI error response [${err.statusCode}]: ${err.response.body.error_message}`);
+		}
+
+		// If that data does not exist for some reason return the actual error
+		throw err;
+	}
+}
+
+/**
+ * Make an API request to paginated TravisCI endpoint
+ * and return all results
+ */
+export async function travisciApiRequestAllItems(this: IHookFunctions | IExecuteFunctions| ILoadOptionsFunctions, propertyName: string, method: string, resource: string, body: any = {}, query: IDataObject = {}): Promise<any> { // tslint:disable-line:no-any
+
+	const returnData: IDataObject[] = [];
+
+	let responseData;
+
+	do {
+		responseData = await travisciApiRequest.call(this, method, resource, body, query);
+		const path = get(responseData, '@pagination.next.@href');
+		if (path !== undefined) {
+			query = querystring.parse(path);
+		}
+		returnData.push.apply(returnData, responseData[propertyName]);
+	} while (
+		responseData['@pagination']['is_last'] !== true
+	);
+	return returnData;
+}