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

import {
	OptionsWithUri,
} from 'request';

import {
	IExecuteFunctions,
	IHookFunctions,
	ILoadOptionsFunctions,
	IWebhookFunctions,
} from 'n8n-core';

import {
	IDataObject, NodeApiError,
} 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 = await this.getCredentials('strapiApi');

	try {
		const options: OptionsWithUri = {
			headers: {},
			method,
			body,
			qs,
			uri: uri || credentials.apiVersion === 'v4' ? `${credentials.url}/api${resource}` : `${credentials.url}${resource}`,
			json: true,
			qsStringifyOptions: {
				arrayFormat: 'indice',
			},
		};
		if (Object.keys(headers).length !== 0) {
			options.headers = Object.assign({}, options.headers, headers);
		}
		if (Object.keys(body).length === 0) {
			delete options.body;
		}

		//@ts-ignore
		return await this.helpers?.request(options);
	} catch (error) {
		throw new NodeApiError(this.getNode(), error);
	}
}

export async function getToken(this: IExecuteFunctions | ILoadOptionsFunctions | IHookFunctions | IWebhookFunctions): Promise<any> { // tslint:disable-line:no-any
	const credentials = await this.getCredentials('strapiApi');
	let options = {} as OptionsWithUri;
		options = {
			headers: {
				'content-type': 'application/json',
			},
			method: 'POST',
			body: {
				identifier: credentials.email,
				password: credentials.password,
			},
			uri: credentials.apiVersion === 'v4' ? `${credentials.url}/api/auth/local`:`${credentials.url}/auth/local`,
			json: true,
		};
	return this.helpers.request!(options);
}

export async function strapiApiRequestAllItems(this: IHookFunctions | ILoadOptionsFunctions | IExecuteFunctions, method: string, resource: string, body: any = {}, query: IDataObject = {}, headers: IDataObject = {}): Promise<any> { // tslint:disable-line:no-any

	const returnData: IDataObject[] = [];
	const {apiVersion} = await this.getCredentials('strapiApi');

	let responseData;
	if (apiVersion === 'v4') {
		query['pagination[pageSize]'] = 20;
		query['pagination[page]'] = 0;
		do {
			({data:responseData} = await strapiApiRequest.call(this, method, resource, body, query, undefined, headers));
			query['pagination[page]'] += query['pagination[pageSize]'];
			returnData.push.apply(returnData, responseData);
		} while (
			responseData.length !== 0
		);

	} else {
		query._limit = 20;
		query._start = 0;
		do {
			responseData = await strapiApiRequest.call(this, method, resource, body, query, undefined, headers);
			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;
}