"use strict";

/**
 * Licensed Materials - Property of IBM
 * IBM Cognos Products: admin
 * Copyright IBM Corp. 2017
 * US Government Users Restricted Rights
 * Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
 */
define(['bi/glass/app/util/View', 'underscore'], function (View, _) {
  'use strict'; //NOSONAR: meant to be strict

  var GenericListView = View.extend({
    selectedRows: [],
    sortAsc: true,
    render: function render(refresh) {
      return this._renderListView(refresh);
    },
    _setHeights: function _setHeights() {
      var list = this.$el.find(".bi-admin-list");
      var windowHeight = $(window).height();
      var headerElementsHeight = this.$el.offset().top;
      var updatedListHeight = windowHeight - headerElementsHeight - 20;
      list.height(updatedListHeight);
    },
    _getItemById: function _getItemById(id) {
      return _.find(this.items, function (item) {
        return _.unescape(id) === _.unescape(item.id);
      });
    },
    _getSelectedItems: function _getSelectedItems() {
      return this.selectedRows.map(function (row) {
        return this._getItemById(row.id);
      }.bind(this));
    },
    _bindEvents: function _bindEvents() {
      var $items = this.$el.find('.bi-admin-list-item');
      $items.off();
      this.off('showContextMenu');
      $items.on('primaryaction', function (e) {
        this._handleSelection(e, false);
      }.bind(this));
      $items.on('contextmenu', function (e) {
        e.preventDefault();
      }.bind(this));
      this.on('showContextMenu', function (e) {
        var handler = this._getNewActionHandler();

        var args = {
          position: e.position,
          menuId: this.menuId,
          activeObject: {
            handler: handler,
            data: e.data,
            parentView: this
          }
        };
        this.glassContext.appController.showContextMenu(args);
      }.bind(this)); // context menu

      var $contextMenus = this.$el.find('.ellipsesButton');
      $contextMenus.on('primaryaction', function (e) {
        this._handleSelection(e, true);

        this._handleContextMenuEvent(e);
      }.bind(this));
      $(window).on('resize', this._setHeights.bind(this));
    },
    _handleContextMenuEvent: function _handleContextMenuEvent(e) {
      var position = {};

      if (e.pageX === undefined || e.gesture === undefined || e.gesture.center === undefined || e.gesture.center.pageX === undefined) {
        position = $(e.target).offset();
      } else {
        position.left = e.pageX || e.gesture.center.pageX;
        position.top = e.pageY || e.gesture.center.pageY;
      }

      this.trigger('showContextMenu', {
        data: this._getSelectedItems(),
        position: {
          "pageX": position.left,
          "pageY": position.top
        }
      });
      e.stopPropagation();
      return false;
    },
    _handleNormalSelect: function _handleNormalSelect(id, $item, selectedIndex, dirtySelections, contextMenuAction) {
      var selections = dirtySelections; // normal click or keypress

      var contextSelectUnselectedNode = contextMenuAction && !selectedIndex;
      var singleSelection = !contextMenuAction && (!selectedIndex || this.selectedRows.length > 1);

      if (contextSelectUnselectedNode || singleSelection) {
        selections = this._clearAllSelections();

        this._selectItem(id, $item, selections);
      }

      this.lastSelectionId = id;
      this.lastShiftSelectionIndex = -1;
      return selections;
    },
    _handleMetaSelect: function _handleMetaSelect(id, $item, selectedIndex, dirtySelections) {
      var selections = dirtySelections; // multi-select via ctrl key (or macOS equivalent)

      if (!selectedIndex) {
        this._selectItem(id, $item, selections);
      } else {
        this._removeItem(id, $item, selections);
      }

      this.lastSelectionId = id;
      this.lastShiftSelectionIndex = -1;
      return selections;
    },
    _handleShiftSelect: function _handleShiftSelect(selectedItem, dirtySelections) {
      var selections = dirtySelections; // multi-select items between last selected and target

      var lastSelectedIndex = _.indexOf(this.items, this._getItemById(this.lastSelectionId));

      var targetIndex = _.indexOf(this.items, selectedItem); // account for the indexing of jquery slice method (include last node)


      if (targetIndex > lastSelectedIndex) {
        targetIndex++;
      }

      if (targetIndex < lastSelectedIndex) {
        lastSelectedIndex++;
      }

      var shiftBetweenLower = targetIndex < lastSelectedIndex && targetIndex > this.lastShiftSelectionIndex;
      var shiftBetweenHigher = targetIndex > lastSelectedIndex && targetIndex < this.lastShiftSelectionIndex;

      if (this.lastShiftSelectionIndex !== -1 && (shiftBetweenHigher || shiftBetweenLower)) {
        // selection is between the last selected and the last shift select target
        // must remove the difference
        this._removeShiftSelection(targetIndex, this.lastShiftSelectionIndex, selections);
      } else {
        if (this.lastShiftSelectionIndex >= 0) {
          this._removeShiftSelection(targetIndex, this.lastShiftSelectionIndex, selections);
        }

        this._addShiftSelection(lastSelectedIndex, targetIndex, selections);
      }

      this.lastShiftSelectionIndex = targetIndex;
      return selections;
    },
    _selectItem: function _selectItem(id, $item, dirtySelections) {
      var schemaToSelect = {
        id: id,
        item: $item
      };
      var index;

      if (this._isItemSelectable(this._getItemById(id))) {
        for (var i = 0; i < this.selectedRows.length; i++) {
          if (this.selectedRows[i].id === id) {
            index = i;
            break;
          }
        }

        if (index > -1) {
          this.selectedRows[index] = schemaToSelect;
        } else {
          this.selectedRows.push(schemaToSelect);
        }

        dirtySelections.push({
          item: $item,
          selected: true
        });
      }
    },
    _removeItem: function _removeItem(id, $item, dirtySelections) {
      var pos;

      for (var i = 0; i < this.selectedRows.length; i++) {
        if (this.selectedRows[i].id === id) {
          pos = i;
          break;
        }
      }

      this.selectedRows.splice(pos, 1);
      dirtySelections.push({
        item: $item,
        selected: false
      });
    },
    _clearAllSelections: function _clearAllSelections() {
      var dirtySelections = this.selectedRows.map(function (selectedRow) {
        return {
          item: selectedRow.item,
          selected: false
        };
      });
      this.selectedRows = [];
      return dirtySelections;
    },
    _addShiftSelection: function _addShiftSelection(index0, index1, dirtySelections) {
      // new selection is last selected -> new target
      var $items = this._getSelectionsBetweenIndicies(index0, index1);

      _.forEach($items, function (shiftItem) {
        var $shiftItem = $(shiftItem);

        this._selectItem($shiftItem.attr('id').trim(), $shiftItem, dirtySelections);
      }.bind(this));
    },
    _removeShiftSelection: function _removeShiftSelection(index0, index1, dirtySelections) {
      // remove previously shift selected items
      var $items = this._getSelectionsBetweenIndicies(index0, index1);

      _.forEach($items, function (shiftItem) {
        var $shiftItem = $(shiftItem);

        this._removeItem($shiftItem.attr('id').trim(), $shiftItem, dirtySelections);
      }.bind(this));
    },
    _getSelectionsBetweenIndicies: function _getSelectionsBetweenIndicies(id0, id1) {
      var $items;

      if (id0 < id1) {
        $items = this.$el.find('.bi-admin-list-item').slice(id0, id1);
      } else {
        $items = this.$el.find('.bi-admin-list-item').slice(id1, id0);
      }

      return $items;
    },
    _applySelectionStyling: function _applySelectionStyling(dirtySelections) {
      _.forEach(dirtySelections, function (dirtySelection) {
        if (dirtySelection.selected) {
          dirtySelection.item.addClass('bi-admin-list-table-selected-schema');
        } else {
          dirtySelection.item.removeClass('bi-admin-list-table-selected-schema');
        }
      });

      dirtySelections = [];
    },
    selectById: function selectById(id) {
      var item = this._getItemById(id) || this._getItemByConnId(id);

      this.trigger('selected', item);
    },
    selectByIndex: function selectByIndex(index) {
      var item = this.items[index];
      this.trigger('selected', item);
    },
    removeSelectedRowById: function removeSelectedRowById(id) {
      _.find(this.$el.find('tr.list-item'), function (item) {
        if (item.id === id) {
          return item;
        }
      }).remove();

      if ($('#workPane').is(":visible")) {
        $('#workPane').addClass('hide');
      }
    },
    insertCopyRowById: function insertCopyRowById(copyRow, id) {
      var copySource = _.find(this.$el.find('tr.list-item'), function (item) {
        if (item.id === id) {
          return item;
        }
      });

      var targetSource = _.clone(copySource);

      targetSource.id = id;
      targetSource.insertAfter(copySource);
    },
    _sortItems: function _sortItems(field) {
      var tempSortField;

      for (var key in this.sortMap) {
        if (field.indexOf(key) > -1) {
          tempSortField = key;
          break;
        }
      } // no sort key found, do not sort


      if (tempSortField) {
        if (tempSortField !== this.sortField) {
          // only sort on first press
          this.sortField = tempSortField;
          this.items = _.sortBy(this.items, function (item) {
            return item[this.sortMap[this.sortField]].toUpperCase();
          }.bind(this));
          this.sortAsc = true;
        } else {
          // reverse on subsequent clicks
          this.items = this.items.reverse();
          this.sortAsc = !this.sortAsc;
        }
      }
    },
    remove: function remove() {
      $(window).off("resize", this._setHeights);
    },
    _isItemSelectable: function _isItemSelectable(item) {
      return true;
    }
  });
  return GenericListView;
});