import { BoundingSphere } from "../../Source/Cesium.js";
import { Cartesian2 } from "../../Source/Cesium.js";
import { Cartesian3 } from "../../Source/Cesium.js";
import { Color } from "../../Source/Cesium.js";
import { defined } from "../../Source/Cesium.js";
import { DistanceDisplayCondition } from "../../Source/Cesium.js";
import { JulianDate } from "../../Source/Cesium.js";
import { NearFarScalar } from "../../Source/Cesium.js";
import { BoundingSphereState } from "../../Source/Cesium.js";
import { ConstantProperty } from "../../Source/Cesium.js";
import { EntityCluster } from "../../Source/Cesium.js";
import { EntityCollection } from "../../Source/Cesium.js";
import { LabelGraphics } from "../../Source/Cesium.js";
import { LabelVisualizer } from "../../Source/Cesium.js";
import { HorizontalOrigin } from "../../Source/Cesium.js";
import { LabelStyle } from "../../Source/Cesium.js";
import { VerticalOrigin } from "../../Source/Cesium.js";
import createGlobe from "../createGlobe.js";
import createScene from "../createScene.js";

describe(
  "DataSources/LabelVisualizer",
  function () {
    var scene;
    var entityCluster;
    var visualizer;

    beforeAll(function () {
      scene = createScene();
      scene.globe = createGlobe();
    });

    afterAll(function () {
      scene.destroyForSpecs();
    });

    beforeEach(function () {
      entityCluster = new EntityCluster();
      entityCluster._initialize(scene);
    });

    afterEach(function () {
      if (defined(visualizer)) {
        visualizer = visualizer.destroy();
      }
      entityCluster.destroy();
    });

    it("constructor throws if no scene is passed.", function () {
      expect(function () {
        return new LabelVisualizer();
      }).toThrowDeveloperError();
    });

    it("update throws if no time specified.", function () {
      var entityCollection = new EntityCollection();
      visualizer = new LabelVisualizer(entityCluster, entityCollection);
      expect(function () {
        visualizer.update();
      }).toThrowDeveloperError();
    });

    it("isDestroy returns false until destroyed.", function () {
      var entityCollection = new EntityCollection();
      visualizer = new LabelVisualizer(entityCluster, entityCollection);
      expect(visualizer.isDestroyed()).toEqual(false);
      visualizer.destroy();
      expect(visualizer.isDestroyed()).toEqual(true);
      visualizer = undefined;
    });

    it("removes the listener from the entity collection when destroyed", function () {
      var entityCollection = new EntityCollection();
      visualizer = new LabelVisualizer(entityCluster, entityCollection);
      expect(entityCollection.collectionChanged.numberOfListeners).toEqual(1);
      visualizer.destroy();
      expect(entityCollection.collectionChanged.numberOfListeners).toEqual(0);
      visualizer = undefined;
    });

    it("object with no label does not create a label.", function () {
      var entityCollection = new EntityCollection();
      visualizer = new LabelVisualizer(entityCluster, entityCollection);

      var testObject = entityCollection.getOrCreateEntity("test");
      testObject.position = new ConstantProperty(
        new Cartesian3(1234, 5678, 9101112)
      );
      visualizer.update(JulianDate.now());
      expect(scene.primitives.get(0)).toBeUndefined();
    });

    it("object with no position does not create a label.", function () {
      var entityCollection = new EntityCollection();
      visualizer = new LabelVisualizer(entityCluster, entityCollection);

      var testObject = entityCollection.getOrCreateEntity("test");
      var label = (testObject.label = new LabelGraphics());
      label.show = new ConstantProperty(true);
      label.text = new ConstantProperty("lorum ipsum");

      visualizer.update(JulianDate.now());
      expect(scene.primitives.get(0)).toBeUndefined();
    });

    it("object with no text does not create a label.", function () {
      var entityCollection = new EntityCollection();
      visualizer = new LabelVisualizer(entityCluster, entityCollection);

      var testObject = entityCollection.getOrCreateEntity("test");
      testObject.position = new ConstantProperty(
        new Cartesian3(1234, 5678, 9101112)
      );
      var label = (testObject.label = new LabelGraphics());
      label.show = new ConstantProperty(true);

      visualizer.update(JulianDate.now());
      expect(scene.primitives.get(0)).toBeUndefined();
    });

    it("A LabelGraphics causes a label to be created and updated.", function () {
      var entityCollection = new EntityCollection();
      visualizer = new LabelVisualizer(entityCluster, entityCollection);

      var testObject = entityCollection.getOrCreateEntity("test");

      var time = JulianDate.now();
      var label = (testObject.label = new LabelGraphics());
      var l;

      testObject.position = new ConstantProperty(
        new Cartesian3(1234, 5678, 9101112)
      );
      label.text = new ConstantProperty("a");
      label.font = new ConstantProperty("sans serif");
      label.style = new ConstantProperty(LabelStyle.FILL);
      label.fillColor = new ConstantProperty(new Color(0.5, 0.8, 0.6, 0.7));
      label.outlineColor = new ConstantProperty(new Color(0.4, 0.3, 0.2, 0.1));
      label.outlineWidth = new ConstantProperty(4.5);
      label.horizontalOrigin = new ConstantProperty(HorizontalOrigin.RIGHT);
      label.verticalOrigin = new ConstantProperty(VerticalOrigin.TOP);
      label.eyeOffset = new ConstantProperty(new Cartesian3(1.0, 2.0, 3.0));
      label.pixelOffset = new ConstantProperty(new Cartesian2(3, 2));
      label.scale = new ConstantProperty(12.5);
      label.show = new ConstantProperty(true);
      label.translucencyByDistance = new ConstantProperty(new NearFarScalar());
      label.pixelOffsetScaleByDistance = new ConstantProperty(
        new NearFarScalar()
      );
      label.scaleByDistance = new ConstantProperty(new NearFarScalar());
      label.distanceDisplayCondition = new ConstantProperty(
        new DistanceDisplayCondition()
      );
      label.disableDepthTestDistance = new ConstantProperty(10.0);

      visualizer.update(time);

      var labelCollection = entityCluster._labelCollection;
      expect(labelCollection.length).toEqual(1);

      l = labelCollection.get(0);

      visualizer.update(time);
      expect(l.position).toEqual(testObject.position.getValue(time));
      expect(l.text).toEqual(testObject.label.text.getValue(time));
      expect(l.font).toEqual(testObject.label.font.getValue(time));
      expect(l.style).toEqual(testObject.label.style.getValue(time));
      expect(l.fillColor).toEqual(testObject.label.fillColor.getValue(time));
      expect(l.outlineColor).toEqual(
        testObject.label.outlineColor.getValue(time)
      );
      expect(l.outlineWidth).toEqual(
        testObject.label.outlineWidth.getValue(time)
      );
      expect(l.horizontalOrigin).toEqual(
        testObject.label.horizontalOrigin.getValue(time)
      );
      expect(l.verticalOrigin).toEqual(
        testObject.label.verticalOrigin.getValue(time)
      );
      expect(l.eyeOffset).toEqual(testObject.label.eyeOffset.getValue(time));
      expect(l.pixelOffset).toEqual(
        testObject.label.pixelOffset.getValue(time)
      );
      expect(l.scale).toEqual(testObject.label.scale.getValue(time));
      expect(l.show).toEqual(testObject.label.show.getValue(time));
      expect(l.translucencyByDistance).toEqual(
        testObject.label.translucencyByDistance.getValue(time)
      );
      expect(l.pixelOffsetScaleByDistance).toEqual(
        testObject.label.pixelOffsetScaleByDistance.getValue(time)
      );
      expect(l.scaleByDistance).toEqual(
        testObject.label.scaleByDistance.getValue(time)
      );
      expect(l.distanceDisplayCondition).toEqual(
        testObject.label.distanceDisplayCondition.getValue(time)
      );
      expect(l.disableDepthTestDistance).toEqual(
        testObject.label.disableDepthTestDistance.getValue(time)
      );

      testObject.position = new ConstantProperty(
        new Cartesian3(5678, 1234, 1293434)
      );
      label.text = new ConstantProperty("b");
      label.font = new ConstantProperty("serif");
      label.style = new ConstantProperty(LabelStyle.FILL_AND_OUTLINE);
      label.fillColor = new ConstantProperty(new Color(0.1, 0.2, 0.3, 0.4));
      label.outlineColor = new ConstantProperty(new Color(0.8, 0.7, 0.6, 0.5));
      label.outlineWidth = new ConstantProperty(0.5);
      label.horizontalOrigin = new ConstantProperty(HorizontalOrigin.CENTER);
      label.verticalOrigin = new ConstantProperty(VerticalOrigin.BOTTOM);
      label.eyeOffset = new ConstantProperty(new Cartesian3(3.0, 1.0, 2.0));
      label.pixelOffset = new ConstantProperty(new Cartesian2(2, 3));
      label.scale = new ConstantProperty(2.5);
      label.show = new ConstantProperty(true);
      label.translucencyByDistance = new ConstantProperty(new NearFarScalar());
      label.pixelOffsetScaleByDistance = new ConstantProperty(
        new NearFarScalar()
      );
      label.scaleByDistance = new ConstantProperty(new NearFarScalar());
      label.distanceDisplayCondition = new ConstantProperty(
        new DistanceDisplayCondition()
      );
      label.disableDepthTestDistance = new ConstantProperty(20.0);

      visualizer.update(time);
      expect(l.position).toEqual(testObject.position.getValue(time));
      expect(l.text).toEqual(testObject.label.text.getValue(time));
      expect(l.font).toEqual(testObject.label.font.getValue(time));
      expect(l.style).toEqual(testObject.label.style.getValue(time));
      expect(l.fillColor).toEqual(testObject.label.fillColor.getValue(time));
      expect(l.outlineColor).toEqual(
        testObject.label.outlineColor.getValue(time)
      );
      expect(l.outlineWidth).toEqual(
        testObject.label.outlineWidth.getValue(time)
      );
      expect(l.horizontalOrigin).toEqual(
        testObject.label.horizontalOrigin.getValue(time)
      );
      expect(l.verticalOrigin).toEqual(
        testObject.label.verticalOrigin.getValue(time)
      );
      expect(l.eyeOffset).toEqual(testObject.label.eyeOffset.getValue(time));
      expect(l.pixelOffset).toEqual(
        testObject.label.pixelOffset.getValue(time)
      );
      expect(l.scale).toEqual(testObject.label.scale.getValue(time));
      expect(l.show).toEqual(testObject.label.show.getValue(time));
      expect(l.translucencyByDistance).toEqual(
        testObject.label.translucencyByDistance.getValue(time)
      );
      expect(l.pixelOffsetScaleByDistance).toEqual(
        testObject.label.pixelOffsetScaleByDistance.getValue(time)
      );
      expect(l.scaleByDistance).toEqual(
        testObject.label.scaleByDistance.getValue(time)
      );
      expect(l.distanceDisplayCondition).toEqual(
        testObject.label.distanceDisplayCondition.getValue(time)
      );
      expect(l.disableDepthTestDistance).toEqual(
        testObject.label.disableDepthTestDistance.getValue(time)
      );

      label.show = new ConstantProperty(false);
      visualizer.update(time);
    });

    it("Reuses primitives when hiding one and showing another", function () {
      var time = JulianDate.now();
      var entityCollection = new EntityCollection();
      visualizer = new LabelVisualizer(entityCluster, entityCollection);

      var testObject = entityCollection.getOrCreateEntity("test");
      testObject.position = new ConstantProperty(
        new Cartesian3(1234, 5678, 9101112)
      );
      testObject.label = new LabelGraphics();
      testObject.label.text = new ConstantProperty("a");
      testObject.label.show = new ConstantProperty(true);

      visualizer.update(time);

      var labelCollection = entityCluster._labelCollection;
      expect(labelCollection.length).toEqual(1);

      testObject.label.show = new ConstantProperty(false);

      visualizer.update(time);

      expect(labelCollection.length).toEqual(1);

      var testObject2 = entityCollection.getOrCreateEntity("test2");
      testObject2.position = new ConstantProperty(
        new Cartesian3(1234, 5678, 9101112)
      );
      testObject2.label = new LabelGraphics();
      testObject2.label.text = new ConstantProperty("b");
      testObject2.label.show = new ConstantProperty(true);

      visualizer.update(time);
      expect(labelCollection.length).toEqual(1);
    });

    it("clear hides labels.", function () {
      var entityCollection = new EntityCollection();
      visualizer = new LabelVisualizer(entityCluster, entityCollection);

      var testObject = entityCollection.getOrCreateEntity("test");
      var time = JulianDate.now();
      var label = (testObject.label = new LabelGraphics());

      testObject.position = new ConstantProperty(
        new Cartesian3(1234, 5678, 9101112)
      );
      label.show = new ConstantProperty(true);
      label.text = new ConstantProperty("lorum ipsum");
      visualizer.update(time);

      var labelCollection = entityCluster._labelCollection;
      expect(labelCollection.length).toEqual(1);
      var l = labelCollection.get(0);
      expect(l.show).toEqual(true);

      //Clearing won't actually remove the label because of the
      //internal cache used by the visualizer, instead it just hides it.
      entityCollection.removeAll();
      visualizer.update(time);
      expect(l.show).toEqual(false);
      expect(l.id).toBeUndefined();
    });

    it("Visualizer sets entity property.", function () {
      var entityCollection = new EntityCollection();
      visualizer = new LabelVisualizer(entityCluster, entityCollection);

      var testObject = entityCollection.getOrCreateEntity("test");
      var time = JulianDate.now();
      var label = (testObject.label = new LabelGraphics());

      testObject.position = new ConstantProperty(
        new Cartesian3(1234, 5678, 9101112)
      );
      label.show = new ConstantProperty(true);
      label.text = new ConstantProperty("lorum ipsum");
      visualizer.update(time);

      var labelCollection = entityCluster._labelCollection;
      expect(labelCollection.length).toEqual(1);
      var l = labelCollection.get(0);
      expect(l.id).toEqual(testObject);
    });

    it("Computes bounding sphere.", function () {
      var entityCollection = new EntityCollection();
      visualizer = new LabelVisualizer(entityCluster, entityCollection);

      var testObject = entityCollection.getOrCreateEntity("test");
      var time = JulianDate.now();
      var label = (testObject.label = new LabelGraphics());

      testObject.position = new ConstantProperty(
        new Cartesian3(1234, 5678, 9101112)
      );
      label.show = new ConstantProperty(true);
      label.text = new ConstantProperty("lorum ipsum");
      visualizer.update(time);

      var result = new BoundingSphere();
      var state = visualizer.getBoundingSphere(testObject, result);

      expect(state).toBe(BoundingSphereState.DONE);
      expect(result.center).toEqual(testObject.position.getValue());
      expect(result.radius).toEqual(0);
    });

    it("Fails bounding sphere for entity without billboard.", function () {
      var entityCollection = new EntityCollection();
      var testObject = entityCollection.getOrCreateEntity("test");
      visualizer = new LabelVisualizer(entityCluster, entityCollection);
      visualizer.update(JulianDate.now());
      var result = new BoundingSphere();
      var state = visualizer.getBoundingSphere(testObject, result);
      expect(state).toBe(BoundingSphereState.FAILED);
    });

    it("Compute bounding sphere throws without entity.", function () {
      var entityCollection = new EntityCollection();
      visualizer = new LabelVisualizer(entityCluster, entityCollection);
      var result = new BoundingSphere();
      expect(function () {
        visualizer.getBoundingSphere(undefined, result);
      }).toThrowDeveloperError();
    });

    it("Compute bounding sphere throws without result.", function () {
      var entityCollection = new EntityCollection();
      var testObject = entityCollection.getOrCreateEntity("test");
      visualizer = new LabelVisualizer(entityCluster, entityCollection);
      expect(function () {
        visualizer.getBoundingSphere(testObject, undefined);
      }).toThrowDeveloperError();
    });
  },
  "WebGL"
);