import { Cartesian3 } from "../../Source/Cesium.js";
import { PrimitiveType } from "../../Source/Cesium.js";
import { Buffer } from "../../Source/Cesium.js";
import { BufferUsage } from "../../Source/Cesium.js";
import { DrawCommand } from "../../Source/Cesium.js";
import { loadCubeMap } from "../../Source/Cesium.js";
import { ShaderProgram } from "../../Source/Cesium.js";
import { VertexArray } from "../../Source/Cesium.js";
import createContext from "../createContext.js";

describe(
  "Renderer/loadCubeMap",
  function () {
    var context;

    beforeAll(function () {
      context = createContext();
    });

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

    it("loads a cube map", function () {
      return loadCubeMap(context, {
        positiveX: "./Data/Images/Green.png",
        negativeX: "./Data/Images/Blue.png",
        positiveY: "./Data/Images/Green.png",
        negativeY: "./Data/Images/Blue.png",
        positiveZ: "./Data/Images/Green.png",
        negativeZ: "./Data/Images/Blue.png",
      }).then(function (cm) {
        expect(cm.width).toEqual(1);
        expect(cm.height).toEqual(1);

        var vs =
          "attribute vec4 position; void main() { gl_PointSize = 1.0; gl_Position = position; }";
        var fs =
          "uniform samplerCube u_texture;" +
          "uniform mediump vec3 u_direction;" +
          "void main() { gl_FragColor = textureCube(u_texture, normalize(u_direction)); }";
        var sp = ShaderProgram.fromCache({
          context: context,
          vertexShaderSource: vs,
          fragmentShaderSource: fs,
          attributeLocations: {
            position: 0,
          },
        });
        var uniformMap = {
          direction: undefined,

          u_texture: function () {
            return cm;
          },
          u_direction: function () {
            return this.direction;
          },
        };

        var va = new VertexArray({
          context: context,
          attributes: [
            {
              vertexBuffer: Buffer.createVertexBuffer({
                context: context,
                typedArray: new Float32Array([0, 0, 0, 1]),
                usage: BufferUsage.STATIC_DRAW,
              }),
              componentsPerAttribute: 4,
            },
          ],
        });

        var command = new DrawCommand({
          primitiveType: PrimitiveType.POINTS,
          shaderProgram: sp,
          vertexArray: va,
          uniformMap: uniformMap,
        });

        // +X is green
        uniformMap.direction = new Cartesian3(1, 0, 0);
        command.execute(context);
        expect(context).toReadPixels([0, 255, 0, 255]);

        // -X is blue
        uniformMap.direction = new Cartesian3(-1, 0, 0);
        command.execute(context);
        expect(context).toReadPixels([0, 0, 255, 255]);

        // +Y is green
        uniformMap.direction = new Cartesian3(0, 1, 0);
        command.execute(context);
        expect(context).toReadPixels([0, 255, 0, 255]);

        // -Y is blue
        uniformMap.direction = new Cartesian3(0, -1, 0);
        command.execute(context);
        expect(context).toReadPixels([0, 0, 255, 255]);

        // +Z is green
        uniformMap.direction = new Cartesian3(0, 0, 1);
        command.execute(context);
        expect(context).toReadPixels([0, 255, 0, 255]);

        // -Z is blue
        uniformMap.direction = new Cartesian3(0, 0, -1);
        command.execute(context);
        expect(context).toReadPixels([0, 0, 255, 255]);

        sp.destroy();
        va.destroy();
        cm.destroy();
      });
    });

    it("calls error function when positiveX does not exist", function () {
      return loadCubeMap(context, {
        positiveX: "not.found",
        negativeX: "./Data/Images/Blue.png",
        positiveY: "./Data/Images/Blue.png",
        negativeY: "./Data/Images/Blue.png",
        positiveZ: "./Data/Images/Blue.png",
        negativeZ: "./Data/Images/Blue.png",
      })
        .then(function (cubeMap) {
          fail("should not be called");
        })
        .otherwise(function () {});
    });

    it("calls error function when negativeX does not exist", function () {
      return loadCubeMap(context, {
        positiveX: "./Data/Images/Blue.png",
        negativeX: "not.found",
        positiveY: "./Data/Images/Blue.png",
        negativeY: "./Data/Images/Blue.png",
        positiveZ: "./Data/Images/Blue.png",
        negativeZ: "./Data/Images/Blue.png",
      })
        .then(function (cubeMap) {
          fail("should not be called");
        })
        .otherwise(function () {});
    });

    it("calls error function when positiveY does not exist", function () {
      return loadCubeMap(context, {
        positiveX: "./Data/Images/Blue.png",
        negativeX: "./Data/Images/Blue.png",
        positiveY: "not.found",
        negativeY: "./Data/Images/Blue.png",
        positiveZ: "./Data/Images/Blue.png",
        negativeZ: "./Data/Images/Blue.png",
      })
        .then(function (cubeMap) {
          fail("should not be called");
        })
        .otherwise(function () {});
    });

    it("calls error function when negativeY does not exist", function () {
      return loadCubeMap(context, {
        positiveX: "./Data/Images/Blue.png",
        negativeX: "./Data/Images/Blue.png",
        positiveY: "./Data/Images/Blue.png",
        negativeY: "not.found",
        positiveZ: "./Data/Images/Blue.png",
        negativeZ: "./Data/Images/Blue.png",
      })
        .then(function (cubeMap) {
          fail("should not be called");
        })
        .otherwise(function () {});
    });

    it("calls error function when positiveZ does not exist", function () {
      return loadCubeMap(context, {
        positiveX: "./Data/Images/Blue.png",
        negativeX: "./Data/Images/Blue.png",
        positiveY: "./Data/Images/Blue.png",
        negativeY: "./Data/Images/Blue.png",
        positiveZ: "not.found",
        negativeZ: "./Data/Images/Blue.png",
      })
        .then(function (cubeMap) {
          fail("should not be called");
        })
        .otherwise(function () {});
    });

    it("calls error function when negativeZ does not exist", function () {
      return loadCubeMap(context, {
        positiveX: "./Data/Images/Blue.png",
        negativeX: "./Data/Images/Blue.png",
        positiveY: "./Data/Images/Blue.png",
        negativeY: "./Data/Images/Blue.png",
        positiveZ: "./Data/Images/Blue.png",
        negativeZ: "not.found",
      })
        .then(function (cubeMap) {
          fail("should not be called");
        })
        .otherwise(function () {});
    });

    it("throws without a context", function () {
      expect(function () {
        loadCubeMap(undefined);
      }).toThrowDeveloperError();
    });

    it("throws without urls", function () {
      expect(function () {
        loadCubeMap(context);
      }).toThrowDeveloperError();
    });

    it("throws without positiveX", function () {
      expect(function () {
        loadCubeMap(context, {
          negativeX: "any.image",
          positiveY: "any.image",
          negativeY: "any.image",
          positiveZ: "any.image",
          negativeZ: "any.image",
        });
      }).toThrowDeveloperError();
    });

    it("throws without negativeX", function () {
      expect(function () {
        loadCubeMap(context, {
          positiveX: "any.image",
          positiveY: "any.image",
          negativeY: "any.image",
          positiveZ: "any.image",
          negativeZ: "any.image",
        });
      }).toThrowDeveloperError();
    });

    it("throws without positiveY", function () {
      expect(function () {
        loadCubeMap(context, {
          positiveX: "any.image",
          negativeX: "any.image",
          negativeY: "any.image",
          positiveZ: "any.image",
          negativeZ: "any.image",
        });
      }).toThrowDeveloperError();
    });

    it("throws without negativeY", function () {
      expect(function () {
        loadCubeMap(context, {
          positiveX: "any.image",
          negativeX: "any.image",
          positiveY: "any.image",
          positiveZ: "any.image",
          negativeZ: "any.image",
        });
      }).toThrowDeveloperError();
    });

    it("throws without positiveZ", function () {
      expect(function () {
        loadCubeMap(context, {
          positiveX: "any.image",
          negativeX: "any.image",
          positiveY: "any.image",
          negativeY: "any.image",
          negativeZ: "any.image",
        });
      }).toThrowDeveloperError();
    });

    it("throws without negativeZ", function () {
      expect(function () {
        loadCubeMap(context, {
          positiveX: "any.image",
          negativeX: "any.image",
          positiveY: "any.image",
          negativeY: "any.image",
          positiveZ: "any.image",
        });
      }).toThrowDeveloperError();
    });
  },
  "WebGL"
);