const server = require('../index.js');
const sinon = require('sinon');
const superagent = require('superagent');
const chai = require('chai');
const expect = chai.expect;

describe('the spy', function() {
	var mockGet;
	beforeEach(function(){
		mockGet = sinon.spy(superagent, 'get');
	});

	afterEach(function(){
		superagent.get.restore();
	});

	it('should use the correct url', function(done){
		const epectedUrl = 'calapi.inadiutorium.cz/api/v0/en/calendars';

		server.getStatusFromApi();

		expect(mockGet.called).to.be.true;
		expect(mockGet.getCall(0).args[0]).to.be.equal(epectedUrl);
		done();
	});
});

describe('url checker ', function() {
		let bodyToReturn = {};
		let promiseToReturn = Promise.resolve({status: 'ok', body: bodyToReturn});

	beforeEach(function(){
		mockGet = sinon.stub(superagent, 'get');
		mockSet = sinon.stub();
	});

	afterEach(function(){
		superagent.get.restore();
	});

	it('should use the correct url', function(){
		mockSet.returns(promiseToReturn);
		var mockObject = {
			'set' : mockSet
		}

		mockGet.returns(mockObject);
		server.getStatusFromApi().then(res => expect(mockGet.called).to.be.true) ;
		expect(mockGet.getCall(0).args[0]).to.be.equal('calapi.inadiutorium.cz/api/v0/en/calendars');
	});

	it('should set the proper headers', function(){
		mockSet.returns(promiseToReturn);
		var mockObject = {
			'set' : mockSet
		}

		mockGet.returns(mockObject);
		server.getStatusFromApi().then(res => expect(mockGet.called).to.be.true);

		expect(mockSet.getCall(0).args[0]).to.be.equal('accept');
		expect(mockSet.getCall(0).args[1]).to.be.equal('json');
	});

	it('should return an array of values', function() {
	let expectedArray = ['calendar1', 'calendar2'];
		promiseToReturn = Promise.resolve({status: 'ok', body: expectedArray});

		bodyToReturn = expectedArray;
		mockSet.returns(promiseToReturn);
		var mockObject = {
			'set' : mockSet
		};

		mockGet.returns(mockObject);
		server.getStatusFromApi().then(function(res) {
			expect(res).to.be.deep.equal(expectedArray);
		});

	});
});