define(["jquery",
    "underscore",
    "slickgrid/slick.grid",
    "sources/selection/xcell_selection_model",
    "sources/selection/grid_selector"
  ],
  function ($, _, SlickGrid, XCellSelectionModel, GridSelector) {
    describe("GridSelector", function () {
      var container, data, columns, gridSelector, xCellSelectionModel;

      beforeEach(function () {
        container = $("<div></div>");
        container.height(9999);
        columns = [{
          id: '1',
          name: 'some-column-name',
          pos: 0
        }, {
          id: '2',
          name: 'second column',
          pos: 1
        }];

        gridSelector = new GridSelector();
        columns = gridSelector.getColumnDefinitions(columns);

        data = [];
        for (var i = 0; i < 10; i++) {
          data.push({'some-column-name': 'some-value-' + i, 'second column': 'second value ' + i});
        }
        var grid = new SlickGrid(container, data, columns);

        xCellSelectionModel = new XCellSelectionModel();
        grid.setSelectionModel(xCellSelectionModel);

        grid.registerPlugin(gridSelector);
        grid.invalidate();

        $("body").append(container);
      });

      afterEach(function () {
        $("body").find(container).remove();
      });

      it("renders an additional column on the left for selecting rows", function () {
        expect(columns.length).toBe(3);

        var leftmostColumn = columns[0];
        expect(leftmostColumn.id).toBe('row-header-column');
      });

      it("renders a button for selecting all the cells", function () {
        expect(container.find("[title='Select/Deselect All']").length).toBe(1);
      });

      describe("when the cell for the select/deselect all is clicked", function () {
        it("selects the whole grid", function () {
          container.find("[title='Select/Deselect All']").parent().click();

          var selectedRanges = xCellSelectionModel.getSelectedRanges();
          expect(selectedRanges.length).toBe(1);
          var selectedRange = selectedRanges[0];
          expect(selectedRange.fromCell).toBe(1);
          expect(selectedRange.toCell).toBe(2);
          expect(selectedRange.fromRow).toBe(0);
          expect(selectedRange.toRow).toBe(9);
        });

        it("adds selected class", function () {
          container.find("[title='Select/Deselect All']").parent().click();

          expect($(container.find("[data-id='select-all']")).hasClass('selected')).toBeTruthy();
        });
      });

      describe("when the select all button in the corner gets selected", function () {

        it("selects all the cells", function () {
          container.find("[title='Select/Deselect All']").click();

          var selectedRanges = xCellSelectionModel.getSelectedRanges();
          expect(selectedRanges.length).toBe(1);
          var selectedRange = selectedRanges[0];
          expect(selectedRange.fromCell).toBe(1);
          expect(selectedRange.toCell).toBe(2);
          expect(selectedRange.fromRow).toBe(0);
          expect(selectedRange.toRow).toBe(9);
        });

        describe("when the select all button in the corner gets deselected", function () {
          beforeEach(function () {
            container.find("[title='Select/Deselect All']").click();
          });

          it("deselects all the cells", function () {
            container.find("[title='Select/Deselect All']").click();

            var selectedRanges = xCellSelectionModel.getSelectedRanges();
            expect(selectedRanges.length).toBe(0);
          });
        });

        describe("and then the underlying selection changes", function () {
          beforeEach(function () {
            container.find("[title='Select/Deselect All']").click();
          });

          it("removes the selected class", function () {
            container.find("[title='Select/Deselect All']").parent().click();

            expect($(container.find("[data-id='select-all']")).hasClass('selected')).toBeFalsy();
          });
        });
      });
    });
  });