import {
	OptionsWithUri
 } from 'request';

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

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

export async function sentryIoApiRequest(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 authentication = this.getNodeParameter('authentication', 0);

	const options: OptionsWithUri = {
		headers: {},
		method,
		qs,
		body,
		uri: uri ||`https://sentry.io${resource}`,
		json: true
	};
	if (!Object.keys(body).length) {
		delete options.body;
	}

	if (Object.keys(option).length !== 0) {
		Object.assign(options, option);
	}

	if (options.qs.limit) {
		delete options.qs.limit;
	}

	try {
		if (authentication === 'accessToken') {

			const credentials = this.getCredentials('sentryIoApi');

			options.headers = {
				Authorization: `Bearer ${credentials?.token}`,
			};

			//@ts-ignore
			return this.helpers.request(options);

		} else {
			return await this.helpers.requestOAuth2!.call(this, 'sentryIoOAuth2Api', options);
		}

	} catch (error) {
		throw new Error(`Sentry.io Error: ${error}`);
	}
}

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

	const returnData: IDataObject[] = [];

	let responseData;

	let link;

	let uri: string | undefined;

	do {
		responseData = await sentryIoApiRequest.call(this, method, resource, body, query, uri, { resolveWithFullResponse: true });
		link = responseData.headers.link;
		uri = getNext(link);
		returnData.push.apply(returnData, responseData.body);
		if (query.limit && (query.limit >= returnData.length)) {
			return;
		}
	} while (
		hasMore(link)
	);

	return returnData;
}

function getNext(link: string) {
	if (link  === undefined) {
		return;
	}
	const next = link.split(',')[1];
	if (next.includes('rel="next"')) {
		return next.split(';')[0].replace('<', '').replace('>','').trim();
	}
}

function hasMore(link: string) {
	if (link  === undefined) {
		return;
	}
	const next = link.split(',')[1];
	if (next.includes('rel="next"')) {
		return next.includes('results="true"');
	}
}