✨ Add Strapi-Node (#1143)

* ✨ Strapi-Node

* ⚡ Small improvements

* ⚡ Small improvement

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

@@ -0,0 +1,106 @@
+import {
+	OptionsWithUri,
+} from 'request';
+
+import {
+	IExecuteFunctions,
+	IHookFunctions,
+	ILoadOptionsFunctions,
+	IWebhookFunctions,
+} from 'n8n-core';
+
+import {
+	IDataObject,
+} from 'n8n-workflow';
+
+export async function strapiApiRequest(this: IExecuteFunctions | ILoadOptionsFunctions | IHookFunctions | IWebhookFunctions, method: string, resource: string, body: any = {}, qs: IDataObject = {}, uri?: string, headers: IDataObject = {}): Promise<any> { // tslint:disable-line:no-any
+
+	const credentials = this.getCredentials('strapiApi') as IDataObject;
+	
+	try {
+		const options: OptionsWithUri = {
+			headers: {
+				'Authorization': `Bearer ${qs.jwt}`,
+			},
+			method,
+			body,
+			qs,
+			uri: uri || `${credentials.url}${resource}`,
+			json: true,
+		};
+		if (Object.keys(headers).length !== 0) {
+			options.headers = Object.assign({}, options.headers, headers);
+		}
+		if (Object.keys(body).length === 0) {
+			delete options.body;
+		}
+		delete qs.jwt;
+
+		//@ts-ignore
+		return await this.helpers?.request(options);
+	} catch (error) {
+		if (error.response && error.response.body && error.response.body.message) {
+
+			let messages = error.response.body.message;
+
+			if (Array.isArray(error.response.body.message)) {
+				messages = messages[0].messages.map((e: IDataObject) => e.message).join('|');
+			}
+			// Try to return the error prettier
+			throw new Error(
+				`Strapi error response [${error.statusCode}]: ${messages}`,
+			);
+		}
+		throw error;
+	}
+}
+
+export async function getToken(this: IExecuteFunctions | ILoadOptionsFunctions | IHookFunctions | IWebhookFunctions): Promise<any> { // tslint:disable-line:no-any
+	const credentials = this.getCredentials('strapiApi') as IDataObject;
+
+	const options: OptionsWithUri = {
+		headers: {
+			'content-type': `application/json`,
+		},
+		method: 'POST',
+		uri: `${credentials.url}/auth/local`,
+		body: {
+			identifier: credentials.email,
+			password: credentials.password,
+		},
+		json: true,
+	};
+
+	return this.helpers.request!(options);
+}
+
+export async function strapiApiRequestAllItems(this: IHookFunctions | ILoadOptionsFunctions | IExecuteFunctions, method: string, resource: string, body: any = {}, query: IDataObject = {}): Promise<any> { // tslint:disable-line:no-any
+
+	const returnData: IDataObject[] = [];
+
+	let responseData;
+
+	query._limit = 20;
+
+	query._start = 0;
+
+	do {
+		responseData = await strapiApiRequest.call(this, method, resource, body, query);
+		query._start += query._limit;
+		returnData.push.apply(returnData, responseData);
+	} while (
+		responseData.length !== 0
+	);
+
+	return returnData;
+}
+
+export function validateJSON(json: string | undefined): any { // tslint:disable-line:no-any
+	let result;
+	try {
+		result = JSON.parse(json!);
+	} catch (exception) {
+		result = undefined;
+	}
+	return result;
+}