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

describe('The data parameter', function(){
  test('should record data to a trial', function(){

    require(root + 'jspsych.js');
    require(root + 'plugins/jspsych-html-keyboard-response.js');

    return (new Promise(function(resolve, reject){

      var key_data = null;

      var trial = {
        type: 'html-keyboard-response',
        stimulus: 'hello',
        data: {added: true},
      }

      jsPsych.init({
        timeline: [trial],
        on_finish: function() {
          var d = jsPsych.data.get().values()[0].added;
          resolve(d);
        }
      });

      utils.pressKey('a');

      //resolve();
    })).then(function(data) { expect(data).toBe(true) });
  });

  test('should record data to all nested trials', function(){

    require(root + 'jspsych.js');
    require(root + 'plugins/jspsych-html-keyboard-response.js');

    return (new Promise(function(resolve, reject){

      var key_data = null;

      var trial = {
        type: 'html-keyboard-response',
        timeline: [
          {stimulus: 'a'},
          {stimulus: 'b'}
        ],
        data: {added: true},
      }

      jsPsych.init({
        timeline: [trial],
        on_finish: function() {
          var d = jsPsych.data.get().filter({added: true}).count();
          resolve(d);
        }
      });

      utils.pressKey('a');

      utils.pressKey('a');

      //resolve();
    })).then(function(data) { expect(data).toBe(2) });
  });

  test('should record data to all nested trials with timeline variables', function(){

    require(root + 'jspsych.js');
    require(root + 'plugins/jspsych-html-keyboard-response.js');

    return (new Promise(function(resolve, reject){

      var key_data = null;

      var vars = [
        {stimulus: 'a'},
        {stimulus: 'b'}
      ];

      var trial = {
        timeline: [
          {type: 'html-keyboard-response',
          stimulus: jsPsych.timelineVariable('stimulus')}
        ],
        timeline_variables: vars,
        data: {added: true},
      }

      jsPsych.init({
        timeline: [trial],
        on_finish: function() {
          var d = jsPsych.data.get().filter({added: true}).count();
          resolve(d);
        }
      });

      utils.pressKey('a');

      utils.pressKey('a');

      //resolve();
    })).then(function(data) { expect(data).toBe(2) });
  });

  test('should work as timeline variable at root level', function(){
    require(root + 'jspsych.js');
    require(root + 'plugins/jspsych-html-keyboard-response.js');

    var trial = {
      timeline: [
        {type: 'html-keyboard-response', stimulus: 'foo', data: jsPsych.timelineVariable('d')}
      ],
      timeline_variables: [
        {d: {added: true}},
        {d: {added: false}}
      ]
    }

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

    utils.pressKey('a'); // trial 1
    utils.pressKey('a'); // trial 2

    expect(jsPsych.data.get().filter({added: true}).count()).toBe(1);
    expect(jsPsych.data.get().filter({added: false}).count()).toBe(1);
  });

  test('should work as timeline variable at nested level', function(){
    require(root + 'jspsych.js');
    require(root + 'plugins/jspsych-html-keyboard-response.js');

    var trial = {
      timeline: [
        {type: 'html-keyboard-response', stimulus: 'foo', data: {added: jsPsych.timelineVariable('added')}}
      ],
      timeline_variables: [
        {added: true},
        {added: false}
      ]
    }

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

    utils.pressKey('a'); // trial 1
    utils.pressKey('a'); // trial 2

    expect(jsPsych.data.get().filter({added: true}).count()).toBe(1);
    expect(jsPsych.data.get().filter({added: false}).count()).toBe(1);
  });

  test('timeline variable should be available in trial on_finish', function(){
    require(root + 'jspsych.js');
    require(root + 'plugins/jspsych-html-keyboard-response.js');

    var trial = {
      timeline: [
        {
          type: 'html-keyboard-response',
          stimulus: 'foo',
          data: {added: jsPsych.timelineVariable('added')},
          on_finish: function(data){
            data.added_copy = data.added;
          }}
      ],
      timeline_variables: [
        {added: true},
        {added: false}
      ]
    }

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

    utils.pressKey('a'); // trial 1
    utils.pressKey('a'); // trial 2

    expect(jsPsych.data.get().filter({added_copy: true}).count()).toBe(1);
    expect(jsPsych.data.get().filter({added_copy: false}).count()).toBe(1);
  });

  test('should record data to all nested trials with timeline variables even when nested trials have own data', function(){

    require(root + 'jspsych.js');
    require(root + 'plugins/jspsych-html-keyboard-response.js');

    return (new Promise(function(resolve, reject){

      var key_data = null;

      var vars = [
        {stimulus: 'a'},
        {stimulus: 'b'}
      ];

      var trial = {
        timeline: [
          {
            type: 'html-keyboard-response',
            stimulus: jsPsych.timelineVariable('stimulus'),
            data: {foo: 1}
          }
        ],
        timeline_variables: vars,
        data: {added: true},
      }

      jsPsych.init({
        timeline: [trial],
        on_finish: function() {
          var d = jsPsych.data.get().filter({added: true, foo: 1}).count();
          resolve(d);
        }
      });

      utils.pressKey('a');

      utils.pressKey('a');

      //resolve();
    })).then(function(data) { expect(data).toBe(2) });
  });

  test('should accept a function as a parameter', function(done){
    var trial = {
      type: 'html-keyboard-response',
      stimulus: 'foo',
      data: {
        a: function(){ return 1; }
      }
    }

    var timeline = [trial];

    jsPsych.init({
      timeline: timeline,
      on_finish: function(){
        expect(jsPsych.data.get().values()[0].a).toBe(1);
        done();
      }
    })

    utils.pressKey('a');
  })
});