const utils = require('../testing-utils.js');
const root = '../../';

jest.useFakeTimers();

describe('image-slider-response', function(){

	beforeEach(function(){
		require(root + 'jspsych.js');
		require(root + 'plugins/jspsych-image-slider-response.js');
	});

	test('loads correctly', function(){
		expect(typeof window.jsPsych.plugins['image-slider-response']).not.toBe('undefined');
	});

	test('displays image stimulus', function(done){
		var trial = {
			type: 'image-slider-response',
			stimulus: '../media/blue.png',
			labels: ['left', 'right'],
			button_label: 'button',
			on_load: function(){
				expect(jsPsych.getDisplayElement().innerHTML).toMatch('<div id="jspsych-image-slider-response-stimulus"><img src="../media/blue.png"');
				utils.clickTarget(document.querySelector('#jspsych-image-slider-response-next'));
				done();
			}
		}

		jsPsych.init({
			timeline: [trial],
			auto_preload: false
		});
	});

	test('displays labels', function(){
		var trial = {
			type: 'image-slider-response',
			stimulus: '../media/blue.png',
			labels: ['left', 'right'],
			button_label: 'button'
		}

		jsPsych.init({
			timeline: [trial],
			auto_preload: false
		});

		expect(jsPsych.getDisplayElement().innerHTML).toMatch('<span style=\"text-align: center; font-size: 80%;\">left</span>');
		expect(jsPsych.getDisplayElement().innerHTML).toMatch('<span style=\"text-align: center; font-size: 80%;\">right</span>');

		utils.clickTarget(document.querySelector('#jspsych-image-slider-response-next'));
	})

	test('displays button label', function(){
		var trial = {
			type: 'image-slider-response',
			stimulus: '../media/blue.png',
			labels: ['left', 'right'],
			button_label: 'button'
		}

		jsPsych.init({
			timeline: [trial],
			auto_preload: false
		});

		expect(jsPsych.getDisplayElement().innerHTML).toMatch('<button id=\"jspsych-image-slider-response-next\" class=\"jspsych-btn\">button</button>');

		utils.clickTarget(document.querySelector('#jspsych-image-slider-response-next'));
	});

	test('should set min, max and step', function(){
		var trial = {
			type: 'image-slider-response',
			stimulus: '../media/blue.png',
			labels: ['left', 'right'],
			button_label: 'button',
			min: 2,
			max: 10,
			step: 2,
		}

		jsPsych.init({
			timeline: [trial],
			auto_preload: false
		});

		expect(jsPsych.getDisplayElement().querySelector('#jspsych-image-slider-response-response').min).toBe('2');
		expect(jsPsych.getDisplayElement().querySelector('#jspsych-image-slider-response-response').max).toBe('10');
		expect(jsPsych.getDisplayElement().querySelector('#jspsych-image-slider-response-response').step).toBe('2');

		utils.clickTarget(document.querySelector('#jspsych-image-slider-response-next'));
	});

	test('prompt should append to bottom of stimulus', function(){
		var trial = {
			type: 'image-slider-response',
			stimulus: '../media/blue.png',
			labels: ['left', 'right'],
			button_label: 'button',
			prompt: '<p>This is a prompt</p>'
		}

		jsPsych.init({
			timeline: [trial],
			auto_preload: false
		});

		expect(jsPsych.getDisplayElement().innerHTML).toMatch('<p>This is a prompt</p>');

		utils.clickTarget(document.querySelector('#jspsych-image-slider-response-next'));
	});

	test('should hide stimulus if stimulus_duration is set', function(){
		var trial = {
			type: 'image-slider-response',
			stimulus: '../media/blue.png',
			labels: ['left', 'right'],
			button_label: 'button',
			stimulus_duration: 500
		}

		jsPsych.init({
			timeline: [trial],
			auto_preload: false
		});

		expect(jsPsych.getDisplayElement().querySelector('#jspsych-image-slider-response-stimulus').style.visibility).toMatch("");
		jest.runTimersToTime(500);
		expect(jsPsych.getDisplayElement().querySelector('#jspsych-image-slider-response-stimulus').style.visibility).toMatch("hidden");
		utils.clickTarget(document.querySelector('#jspsych-image-slider-response-next'));
	});

	test('should end trial when trial duration is reached', function(){
		var trial = {
			type: 'image-slider-response',
			stimulus: '../media/blue.png',
			labels: ['left', 'right'],
			button_label: 'button',
			trial_duration: 500

		}

		jsPsych.init({
			timeline: [trial],
			auto_preload: false
		});

		expect(jsPsych.getDisplayElement().innerHTML).toMatch('<div id="jspsych-image-slider-response-stimulus"><img src="../media/blue.png"');
		jest.runTimersToTime(500);
		expect(jsPsych.getDisplayElement().innerHTML).toBe('');
	});

	test('should end trial when button is clicked', function(){
		var trial = {
			type: 'image-slider-response',
			stimulus: '../media/blue.png',
			labels: ['left', 'right'],
			button_label: 'button',
			response_ends_trial: true
		}

		jsPsych.init({
			timeline: [trial],
			auto_preload: false
		});

		expect(jsPsych.getDisplayElement().innerHTML).toMatch('<div id="jspsych-image-slider-response-stimulus"><img src="../media/blue.png"');

		utils.clickTarget(document.querySelector('#jspsych-image-slider-response-next'));

		expect(jsPsych.getDisplayElement().innerHTML).toBe('');
	});
});