import { OptionsWithUri } from 'request';

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

import { IDataObject } from 'n8n-workflow';
import * as _ from 'lodash';

export async function zoomApiRequest(
	this: IExecuteFunctions | IExecuteSingleFunctions | ILoadOptionsFunctions,
	method: string,
	resource: string,
	body: object = {},
	query: object = {},
	headers: {} | undefined = undefined,
	option: {} = {}
): Promise<any> {
	// tslint:disable-line:no-any
	const authenticationMethod = this.getNodeParameter(
		'authentication',
		0,
		'accessToken'
	) as string;
	let options: OptionsWithUri = {
		method,
		headers: headers || {
			'Content-Type': 'application/json'
		},
		body,
		qs: query,
		uri: `https://zoom.us/oauth${resource}`,
		json: true
	};
	options = Object.assign({}, options, option);
	if (Object.keys(body).length === 0) {
		delete options.body;
	}
	if (Object.keys(query).length === 0) {
		delete options.qs;
	}
	try {
		if (authenticationMethod === 'accessToken') {
			const credentials = this.getCredentials('zoomApi');
			if (credentials === undefined) {
				throw new Error('No credentials got returned!');
			}
			options.headers!.Authorization = `Bearer ${credentials.accessToken}`;
			//@ts-ignore
			return await this.helpers.request(options);
		} else {
			//@ts-ignore
			return await this.helpers.requestOAuth2.call(
				this,
				'zoomOAuth2Api',
				options
			);
		}
	} catch (error) {
		if (error.statusCode === 401) {
			// Return a clear error
			throw new Error('The Zoom credentials are not valid!');
		}

		if (error.response && error.response.body && error.response.body.message) {
			// Try to return the error prettier
			throw new Error(
				`Zoom error response [${error.statusCode}]: ${error.response.body.message}`
			);
		}

		// If that data does not exist for some reason return the actual error
		throw error;
	}
}

export async function zoomApiRequestAllItems(
	this: IExecuteFunctions | ILoadOptionsFunctions,
	propertyName: string,
	method: string,
	endpoint: string,
	body: any = {},
	query: IDataObject = {}
): Promise<any> {
	// tslint:disable-line:no-any
	const returnData: IDataObject[] = [];
	let responseData;
	query.page = 1;
	query.count = 100;
	do {
		responseData = await zoomApiRequest.call(
			this,
			method,
			endpoint,
			body,
			query
		);
		query.cursor = encodeURIComponent(
			_.get(responseData, 'response_metadata.next_cursor')
		);
		query.page++;
		returnData.push.apply(returnData, responseData[propertyName]);
	} while (
		(responseData.response_metadata !== undefined &&
			responseData.response_metadata.mext_cursor !== undefined &&
			responseData.response_metadata.next_cursor !== '' &&
			responseData.response_metadata.next_cursor !== null) ||
		(responseData.paging !== undefined &&
			responseData.paging.pages !== undefined &&
			responseData.paging.page !== undefined &&
			responseData.paging.page < responseData.paging.pages)
	);

	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;
}