/* eslint-disable no-useless-return, func-names, space-before-function-paren, wrap-iife, no-var, no-underscore-dangle, prefer-arrow-callback, max-len, one-var, no-unused-vars, one-var-declaration-per-line, prefer-template, no-new, consistent-return, object-shorthand, comma-dangle, no-shadow, no-param-reassign, brace-style, vars-on-top, quotes, no-lonely-if, no-else-return, dot-notation, no-empty, no-return-assign, camelcase, prefer-spread */
/* global Issuable */
/* global ListLabel */
import _ from 'underscore';
import IssuableBulkUpdateActions from './issuable_bulk_update_actions';
import DropdownUtils from './filtered_search/dropdown_utils';

(function() {
  this.LabelsSelect = (function() {
    function LabelsSelect(els) {
      var _this, $els;
      _this = this;

      $els = $(els);

      if (!els) {
        $els = $('.js-label-select');
      }

      $els.each(function(i, dropdown) {
        var $block, $colorPreview, $dropdown, $form, $loading, $selectbox, $sidebarCollapsedValue, $value, abilityName, defaultLabel, enableLabelCreateButton, issueURLSplit, issueUpdateURL, labelHTMLTemplate, labelNoneHTMLTemplate, labelUrl, namespacePath, projectPath, saveLabelData, selectedLabel, showAny, showNo, $sidebarLabelTooltip, initialSelected, $toggleText, fieldName, useId, propertyName, showMenuAbove, $container, $dropdownContainer;
        $dropdown = $(dropdown);
        $dropdownContainer = $dropdown.closest('.labels-filter');
        $toggleText = $dropdown.find('.dropdown-toggle-text');
        namespacePath = $dropdown.data('namespace-path');
        projectPath = $dropdown.data('project-path');
        labelUrl = $dropdown.data('labels');
        issueUpdateURL = $dropdown.data('issueUpdate');
        selectedLabel = $dropdown.data('selected');
        if ((selectedLabel != null) && !$dropdown.hasClass('js-multiselect')) {
          selectedLabel = selectedLabel.split(',');
        }
        showNo = $dropdown.data('show-no');
        showAny = $dropdown.data('show-any');
        showMenuAbove = $dropdown.data('showMenuAbove');
        defaultLabel = $dropdown.data('default-label');
        abilityName = $dropdown.data('ability-name');
        $selectbox = $dropdown.closest('.selectbox');
        $block = $selectbox.closest('.block');
        $form = $dropdown.closest('form, .js-issuable-update');
        $sidebarCollapsedValue = $block.find('.sidebar-collapsed-icon span');
        $sidebarLabelTooltip = $block.find('.js-sidebar-labels-tooltip');
        $value = $block.find('.value');
        $loading = $block.find('.block-loading').fadeOut();
        fieldName = $dropdown.data('field-name');
        useId = $dropdown.is('.js-issuable-form-dropdown, .js-filter-bulk-update, .js-label-sidebar-dropdown');
        propertyName = useId ? 'id' : 'title';
        initialSelected = $selectbox
          .find('input[name="' + $dropdown.data('field-name') + '"]')
          .map(function () {
            return this.value;
          }).get();
        if (issueUpdateURL != null) {
          issueURLSplit = issueUpdateURL.split('/');
        }
        if (issueUpdateURL) {
          labelHTMLTemplate = _.template('<% _.each(labels, function(label){ %> <a href="<%- ["",issueURLSplit[1], issueURLSplit[2],""].join("/") %>issues?label_name[]=<%- encodeURIComponent(label.title) %>"> <span class="label has-tooltip color-label" title="<%- label.description %>" style="background-color: <%- label.color %>; color: <%- label.text_color %>;"> <%- label.title %> </span> </a> <% }); %>');
          labelNoneHTMLTemplate = '<span class="no-value">None</span>';
        }

        $sidebarLabelTooltip.tooltip();

        if ($dropdown.closest('.dropdown').find('.dropdown-new-label').length) {
          new gl.CreateLabelDropdown($dropdown.closest('.dropdown').find('.dropdown-new-label'), namespacePath, projectPath);
        }

        saveLabelData = function() {
          var data, selected;
          selected = $dropdown.closest('.selectbox').find("input[name='" + fieldName + "']").map(function() {
            return this.value;
          }).get();

          if (_.isEqual(initialSelected, selected)) return;
          initialSelected = selected;

          data = {};
          data[abilityName] = {};
          data[abilityName].label_ids = selected;
          if (!selected.length) {
            data[abilityName].label_ids = [''];
          }
          $loading.removeClass('hidden').fadeIn();
          $dropdown.trigger('loading.gl.dropdown');
          return $.ajax({
            type: 'PUT',
            url: issueUpdateURL,
            dataType: 'JSON',
            data: data
          }).done(function(data) {
            var labelCount, template, labelTooltipTitle, labelTitles;
            $loading.fadeOut();
            $dropdown.trigger('loaded.gl.dropdown');
            $selectbox.hide();
            data.issueURLSplit = issueURLSplit;
            labelCount = 0;
            if (data.labels.length) {
              template = labelHTMLTemplate(data);
              labelCount = data.labels.length;
            }
            else {
              template = labelNoneHTMLTemplate;
            }
            $value.removeAttr('style').html(template);
            $sidebarCollapsedValue.text(labelCount);

            if (data.labels.length) {
              labelTitles = data.labels.map(function(label) {
                return label.title;
              });

              if (labelTitles.length > 5) {
                labelTitles = labelTitles.slice(0, 5);
                labelTitles.push('and ' + (data.labels.length - 5) + ' more');
              }

              labelTooltipTitle = labelTitles.join(', ');
            }
            else {
              labelTooltipTitle = '';
              $sidebarLabelTooltip.tooltip('destroy');
            }

            $sidebarLabelTooltip
              .attr('title', labelTooltipTitle)
              .tooltip('fixTitle');

            $('.has-tooltip', $value).tooltip({
              container: 'body'
            });
          });
        };
        $dropdown.glDropdown({
          showMenuAbove: showMenuAbove,
          data: function(term, callback) {
            return $.ajax({
              url: labelUrl
            }).done(function(data) {
              data = _.chain(data).groupBy(function(label) {
                return label.title;
              }).map(function(label) {
                var color;
                color = _.map(label, function(dup) {
                  return dup.color;
                });
                return {
                  id: label[0].id,
                  title: label[0].title,
                  color: color,
                  duplicate: color.length > 1
                };
              }).value();
              if ($dropdown.hasClass('js-extra-options')) {
                var extraData = [];
                if (showNo) {
                  extraData.unshift({
                    id: 0,
                    title: 'No Label'
                  });
                }
                if (showAny) {
                  extraData.unshift({
                    isAny: true,
                    title: 'Any Label'
                  });
                }
                if (extraData.length) {
                  extraData.push('divider');
                  data = extraData.concat(data);
                }
              }

              callback(data);
              if (showMenuAbove) {
                $dropdown.data('glDropdown').positionMenuAbove();
              }
            });
          },
          renderRow: function(label, instance) {
            var $a, $li, color, colorEl, indeterminate, removesAll, selectedClass, spacing, i, marked, dropdownName, dropdownValue;
            $li = $('<li>');
            $a = $('<a href="#">');
            selectedClass = [];
            removesAll = label.id <= 0 || (label.id == null);
            if ($dropdown.hasClass('js-filter-bulk-update')) {
              indeterminate = $dropdown.data('indeterminate') || [];
              marked = $dropdown.data('marked') || [];

              if (indeterminate.indexOf(label.id) !== -1) {
                selectedClass.push('is-indeterminate');
              }

              if (marked.indexOf(label.id) !== -1) {
                // Remove is-indeterminate class if the item will be marked as active
                i = selectedClass.indexOf('is-indeterminate');
                if (i !== -1) {
                  selectedClass.splice(i, 1);
                }
                selectedClass.push('is-active');
              }
            } else {
              if (this.id(label)) {
                dropdownName = $dropdown.data('fieldName');
                dropdownValue = this.id(label).toString().replace(/'/g, '\\\'');

                if ($form.find("input[type='hidden'][name='" + dropdownName + "'][value='" + dropdownValue + "']").length) {
                  selectedClass.push('is-active');
                }
              }

              if ($dropdown.hasClass('js-multiselect') && removesAll) {
                selectedClass.push('dropdown-clear-active');
              }
            }
            if (label.duplicate) {
              color = gl.DropdownUtils.duplicateLabelColor(label.color);
            }
            else {
              if (label.color != null) {
                color = label.color[0];
              }
            }
            if (color) {
              colorEl = "<span class='dropdown-label-box' style='background: " + color + "'></span>";
            }
            else {
              colorEl = '';
            }
            // We need to identify which items are actually labels
            if (label.id) {
              selectedClass.push('label-item');
              $a.attr('data-label-id', label.id);
            }
            $a.addClass(selectedClass.join(' ')).html(colorEl + " " + label.title);
            // Return generated html
            return $li.html($a).prop('outerHTML');
          },
          search: {
            fields: ['title']
          },
          selectable: true,
          filterable: true,
          selected: $dropdown.data('selected') || [],
          toggleLabel: function(selected, el) {
            var isSelected = el !== null ? el.hasClass('is-active') : false;
            var title = selected.title;
            var selectedLabels = this.selected;

            if (selected.id === 0) {
              this.selected = [];
              return 'No Label';
            }
            else if (isSelected) {
              this.selected.push(title);
            }
            else {
              var index = this.selected.indexOf(title);
              this.selected.splice(index, 1);
            }

            if (selectedLabels.length === 1) {
              return selectedLabels;
            }
            else if (selectedLabels.length) {
              return selectedLabels[0] + " +" + (selectedLabels.length - 1) + " more";
            }
            else {
              return defaultLabel;
            }
          },
          fieldName: $dropdown.data('field-name'),
          id: function(label) {
            if (label.id <= 0) return label.title;

            if ($dropdown.hasClass('js-issuable-form-dropdown')) {
              return label.id;
            }

            if ($dropdown.hasClass("js-filter-submit") && (label.isAny == null)) {
              return label.title;
            }
            else {
              return label.id;
            }
          },
          hidden: function() {
            var isIssueIndex, isMRIndex, page, selectedLabels;
            page = $('body').data('page');
            isIssueIndex = page === 'projects:issues:index';
            isMRIndex = page === 'projects:merge_requests:index';
            $selectbox.hide();
            // display:block overrides the hide-collapse rule
            $value.removeAttr('style');

            if ($dropdown.hasClass('js-issuable-form-dropdown')) {
              return;
            }

            if ($('html').hasClass('issue-boards-page')) {
              return;
            }
            if ($dropdown.hasClass('js-multiselect')) {
              if ($dropdown.hasClass('js-filter-submit') && (isIssueIndex || isMRIndex)) {
                selectedLabels = $dropdown.closest('form').find("input:hidden[name='" + ($dropdown.data('fieldName')) + "']");
                Issuable.filterResults($dropdown.closest('form'));
              }
              else if ($dropdown.hasClass('js-filter-submit')) {
                $dropdown.closest('form').submit();
              }
              else {
                if (!$dropdown.hasClass('js-filter-bulk-update')) {
                  saveLabelData();
                }
              }
            }
          },
          multiSelect: $dropdown.hasClass('js-multiselect'),
          vue: $dropdown.hasClass('js-issue-board-sidebar'),
          clicked: function(options) {
            const { $el, e, isMarking } = options;
            const label = options.selectedObj;

            var isIssueIndex, isMRIndex, page, boardsModel;
            var fadeOutLoader = () => {
              $loading.fadeOut();
            };

            page = $('body').data('page');
            isIssueIndex = page === 'projects:issues:index';
            isMRIndex = page === 'projects:merge_requests:index';

            if ($dropdown.parent().find('.is-active:not(.dropdown-clear-active)').length) {
              $dropdown.parent()
                .find('.dropdown-clear-active')
                .removeClass('is-active');
            }

            if ($dropdown.hasClass('js-issuable-form-dropdown')) {
              return;
            }

            if ($dropdown.hasClass('js-filter-bulk-update')) {
              _this.enableBulkLabelDropdown();
              _this.setDropdownData($dropdown, isMarking, label.id);
              return;
            }

            if ($dropdown.closest('.add-issues-modal').length) {
              boardsModel = gl.issueBoards.ModalStore.store.filter;
            }

            if (boardsModel) {
              if (label.isAny) {
                boardsModel['label_name'] = [];
              } else if ($el.hasClass('is-active')) {
                boardsModel['label_name'].push(label.title);
              }

              e.preventDefault();
              return;
            }
            else if ($dropdown.hasClass('js-filter-submit') && (isIssueIndex || isMRIndex)) {
              if (!$dropdown.hasClass('js-multiselect')) {
                selectedLabel = label.title;
                return Issuable.filterResults($dropdown.closest('form'));
              }
            }
            else if ($dropdown.hasClass('js-filter-submit')) {
              return $dropdown.closest('form').submit();
            }
            else if ($dropdown.hasClass('js-issue-board-sidebar')) {
              if ($el.hasClass('is-active')) {
                gl.issueBoards.BoardsStore.detail.issue.labels.push(new ListLabel({
                  id: label.id,
                  title: label.title,
                  color: label.color[0],
                  textColor: '#fff'
                }));
              }
              else {
                var labels = gl.issueBoards.BoardsStore.detail.issue.labels;
                labels = labels.filter(function (selectedLabel) {
                  return selectedLabel.id !== label.id;
                });
                gl.issueBoards.BoardsStore.detail.issue.labels = labels;
              }

              $loading.fadeIn();

              gl.issueBoards.BoardsStore.detail.issue.update($dropdown.attr('data-issue-update'))
                .then(fadeOutLoader)
                .catch(fadeOutLoader);
            }
            else {
              if ($dropdown.hasClass('js-multiselect')) {

              }
              else {
                return saveLabelData();
              }
            }
          },
        });

        // Set dropdown data
        _this.setOriginalDropdownData($dropdownContainer, $dropdown);
      });
      this.bindEvents();
    }

    LabelsSelect.prototype.bindEvents = function() {
      return $('body').on('change', '.selected_issue', this.onSelectCheckboxIssue);
    };

    LabelsSelect.prototype.onSelectCheckboxIssue = function() {
      if ($('.selected_issue:checked').length) {
        return;
      }
      return $('.issues-bulk-update .labels-filter .dropdown-toggle-text').text('Label');
    };

    LabelsSelect.prototype.enableBulkLabelDropdown = function() {
      IssuableBulkUpdateActions.willUpdateLabels = true;
    };

    LabelsSelect.prototype.setDropdownData = function($dropdown, isMarking, value) {
      var i, markedIds, unmarkedIds, indeterminateIds;

      markedIds = $dropdown.data('marked') || [];
      unmarkedIds = $dropdown.data('unmarked') || [];
      indeterminateIds = $dropdown.data('indeterminate') || [];

      if (isMarking) {
        markedIds.push(value);

        i = indeterminateIds.indexOf(value);
        if (i > -1) {
          indeterminateIds.splice(i, 1);
        }

        i = unmarkedIds.indexOf(value);
        if (i > -1) {
          unmarkedIds.splice(i, 1);
        }
      } else {
        // If marked item (not common) is unmarked
        i = markedIds.indexOf(value);
        if (i > -1) {
          markedIds.splice(i, 1);
        }

        // If an indeterminate item is being unmarked
        if (IssuableBulkUpdateActions.getOriginalIndeterminateIds().indexOf(value) > -1) {
          unmarkedIds.push(value);
        }

        // If a marked item is being unmarked
        // (a marked item could also be a label that is present in all selection)
        if (IssuableBulkUpdateActions.getOriginalCommonIds().indexOf(value) > -1) {
          unmarkedIds.push(value);
        }
      }

      $dropdown.data('marked', markedIds);
      $dropdown.data('unmarked', unmarkedIds);
      $dropdown.data('indeterminate', indeterminateIds);
    };

    LabelsSelect.prototype.setOriginalDropdownData = function($container, $dropdown) {
      var labels = [];
      $container.find('[name="label_name[]"]').map(function() {
        return labels.push(this.value);
      });
      $dropdown.data('marked', labels);
    };

    return LabelsSelect;
  })();
}).call(window);