import { EllipsoidTerrainProvider } from "../../../Source/Cesium.js";
import { FeatureDetection } from "../../../Source/Cesium.js";
import { ImageryLayerCollection } from "../../../Source/Cesium.js";
import DomEventSimulator from "../../DomEventSimulator.js";
import { BaseLayerPicker } from "../../../Source/Cesium.js";

describe("Widgets/BaseLayerPicker/BaseLayerPicker", function () {
  function MockGlobe() {
    this.imageryLayers = new ImageryLayerCollection();
    this.terrainProvider = new EllipsoidTerrainProvider();
  }

  it("can create and destroy", function () {
    var container = document.createElement("div");
    container.id = "testContainer";
    document.body.appendChild(container);

    var globe = new MockGlobe();
    var widget = new BaseLayerPicker("testContainer", {
      globe: globe,
    });
    expect(widget.container).toBe(container);
    expect(widget.viewModel.globe).toBe(globe);
    expect(widget.isDestroyed()).toEqual(false);
    widget.destroy();
    expect(widget.isDestroyed()).toEqual(true);

    document.body.removeChild(container);
  });

  function addCloseOnInputSpec(name, func) {
    it(
      name + " event closes dropdown if target is not inside container",
      function () {
        var container = document.createElement("div");
        container.id = "testContainer";
        document.body.appendChild(container);

        var widget = new BaseLayerPicker("testContainer", {
          globe: new MockGlobe(),
        });

        widget.viewModel.dropDownVisible = true;
        func(document.body);
        expect(widget.viewModel.dropDownVisible).toEqual(false);

        widget.viewModel.dropDownVisible = true;
        func(container.firstChild);
        expect(widget.viewModel.dropDownVisible).toEqual(true);

        widget.destroy();
        document.body.removeChild(container);
      }
    );
  }

  if (FeatureDetection.supportsPointerEvents()) {
    addCloseOnInputSpec("pointerDown", DomEventSimulator.firePointerDown);
  } else {
    addCloseOnInputSpec("mousedown", DomEventSimulator.fireMouseDown);
    addCloseOnInputSpec("touchstart", DomEventSimulator.fireTouchStart);
  }

  it("constructor throws with no layer collection", function () {
    expect(function () {
      return new BaseLayerPicker(document.body, undefined);
    }).toThrowDeveloperError();
  });

  it("constructor throws with no element", function () {
    expect(function () {
      return new BaseLayerPicker(undefined, {
        globe: new MockGlobe(),
      });
    }).toThrowDeveloperError();
  });

  it("constructor throws with string element that does not exist", function () {
    expect(function () {
      return new BaseLayerPicker("does not exist", {
        globe: new MockGlobe(),
      });
    }).toThrowDeveloperError();
  });
});