import {
	OptionsWithUri,
} from 'request';

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

import {
	IDataObject,
 } from 'n8n-workflow';

export async function webflowApiRequest(this: IHookFunctions | IExecuteFunctions | IExecuteSingleFunctions | ILoadOptionsFunctions | IWebhookFunctions, method: string, resource: string, body: any = {}, qs: IDataObject = {}, uri?: string, option: IDataObject = {}): Promise<any> { // tslint:disable-line:no-any
	const authenticationMethod = this.getNodeParameter('authentication', 0);

	let options: OptionsWithUri = {
		headers: {
			'accept-version': '1.0.0',
		},
		method,
		qs,
		body,
		uri: uri ||`https://api.webflow.com${resource}`,
		json: true
	};
	options = Object.assign({}, options, option);
	if (Object.keys(options.body).length === 0) {
		delete options.body;
	}

	try {
		if (authenticationMethod === 'accessToken') {
			const credentials = this.getCredentials('webflowApi');
			if (credentials === undefined) {
				throw new Error('No credentials got returned!');
			}

			options.headers!['authorization'] = `Bearer ${credentials.accessToken}`;

			return await this.helpers.request!(options);
		} else {
			return await this.helpers.requestOAuth2!.call(this, 'webflowOAuth2Api', options);
		}
	} catch (error) {
		if (error.response.body.err) {
			throw new Error(`Webflow Error: [${error.statusCode}]: ${error.response.body.err}`);
		}
		return error;
	}
}