var urlHash = require('./urlHash.js'),
  insertPreview = require('./insertPreview.js');

function IntermediateHtmlStepUi(_sequencer, step, options) {
  function stepUI() {
    return '<div class="row insertDiv collapse">\
          <section class="panel panel-primary .insert-step">\
            <button class="btn btn-default close-insert-box"><i class="fa fa-times" aria-hidden="true"></i> Close</button>\
            <div class="form-inline">\
              <div class="panel-body">\
                <p class="info">Select a new module to add to your sequence.</p>\
                <div class="row center-align radio-group">\
                  <div>\
                    <div class="radio" data-value="resize">\
                      <i class="fa fa-arrows-alt fa-4x i-over"></i>\
                    </div>\
                    <p>Resize</p>\
                  </div>\
                  <div>\
                    <div class="radio" data-value="brightness">\
                      <i class="fa fa-sun-o fa-4x i-over"></i>\
                    </div>\
                    <p>Brightness</p>\
                  </div>\
                  <div>\
                    <div class="radio" data-value="contrast">\
                      <i class="fa fa-adjust fa-4x i-over"></i>\
                    </div>\
                    <p>Contrast</p>\
                  </div>\
                  <div>\
                    <div class="radio" data-value="saturation">\
                      <i class="fa fa-tint fa-4x i-over i-small"></i>\
                    </div>\
                    <p>Saturation</p>\
                  </div>\
                  <div>\
                    <div class="radio" data-value="rotate">\
                      <i class="fa fa-rotate-right fa-4x i-over"></i>\
                    </div>\
                    <p>Rotate</p>\
                  </div>\
                  <div>\
                    <div class="radio" data-value="crop">\
                      <i class="fa fa-crop fa-4x i-over"></i>\
                    </div>\
                    <p>Crop</p>\
                  </div>\
                </div>\
                <div class="row center-align">\
                  <div class="col-md-8">\
                    <select class="insert-step-select">\
                      <!-- The default null selection has been appended manually in demo.js\
                      This is because the options in select are overritten when options are appended.-->\
                    </select>\
                  <div>\
                  <div class="col-md-4">\
                    <button class="btn btn-success btn-lg insert-save-btn add-step-btn" name="add">Add Step</button>\
                  <div>\
                </div>\
              </div>\
            </div>\
          </section>\
        </div>';
  }


  function selectNewStepUi() {
    var insertSelect = $(step.ui.querySelector('.insert-step-select'));
    var m = insertSelect.val();
    $(step.ui.querySelector('.insertDiv .info')).html(_sequencer.modulesInfo(m).description);
    $(step.ui.querySelector('.insertDiv .add-step-btn')).prop('disabled', false);
  }
    
    
  var toggleDiv = function(callback = function(){}){
    $(step.ui.querySelector('.insertDiv')).collapse('toggle');
    if ($(step.ui.querySelector('.insert-text')).css('display') != 'none'){
      $(step.ui.querySelector('.insert-text')).fadeToggle(200, function(){$(step.ui.querySelector('.no-insert-text')).fadeToggle(200, callback);});
    }
    else {
      $(step.ui.querySelector('.no-insert-text')).fadeToggle(200, function(){$(step.ui.querySelector('.insert-text')).fadeToggle(200, callback);});
    }
  };

  insertStep = function (id) {
    var modulesInfo = _sequencer.modulesInfo();
    var parser = new DOMParser();
    var addStepUI = stepUI();
    addStepUI = parser.parseFromString(addStepUI, 'text/html').querySelector('div');

    if ($(step.ui.querySelector('.insertDiv')).length > 0){
      toggleDiv();
    }
    else {
      step.ui
        .querySelector('div.step')
        .insertAdjacentElement('afterend',
          addStepUI
        );
      toggleDiv(function(){
        insertPreview.updatePreviews(step.output, '.insertDiv');
      });
    }

    $(step.ui.querySelector('.insertDiv .close-insert-box')).off('click').on('click', function(){toggleDiv(function(){});});
    
    var insertStepSelect = $(step.ui.querySelector('.insert-step-select'));
    insertStepSelect.html('');
    // Add modules to the insertStep dropdown
    for (var m in modulesInfo) {
      if (modulesInfo[m] !== undefined)
        insertStepSelect.append(
          '<option value="' + m + '">' + modulesInfo[m].name + '</option>'
        );
    }
    insertStepSelect.selectize({
      sortField: 'text'
    });
    $(step.ui.querySelector('.inserDiv .add-step-btn')).prop('disabled', true);
    
    insertStepSelect.append('<option value="" disabled selected>Select a Module</option>');
    $(step.ui.querySelector('.insertDiv .radio-group .radio')).on('click', function () {
      $(this).parent().find('.radio').removeClass('selected');
      $(this).addClass('selected');
      newStep = $(this).attr('data-value');
      $(step.ui.querySelector('.insert-step-select')).val(newStep);
      selectNewStepUi();
      insert(id);
      $(this).removeClass('selected');
    });
    insertStepSelect.on('change', selectNewStepUi);
    $(step.ui.querySelector('.insertDiv .add-step-btn')).on('click', function () { insert(id); });
  };

  function insert(id) {

    options = options || {};
    var insertStepSelect = $(step.ui.querySelector('.insert-step-select'));
    if (insertStepSelect.val() == 'none') return;

    var newStepName = insertStepSelect.val();
    toggleDiv();
    var sequenceLength = 1;
    if (sequencer.sequences[newStepName]) {
      sequenceLength = sequencer.sequences[newStepName].length;
    } else if (sequencer.modules[newStepName][1]['length']) {
      sequenceLength = sequencer.modules[newStepName][1]['length'];
    }
    _sequencer
      .insertSteps(id + 1, newStepName).run({ index: id });

    // add to URL hash too
    urlHash.setUrlHashParameter('steps', _sequencer.toString());

  }

  return {
    insertStep
  };
}
module.exports = IntermediateHtmlStepUi;