import { QPixmap } from "../QPixmap";
import path from "path";
import { QVariant } from "../../QtCore/QVariant";
import { AspectRatioMode } from "../../QtEnums";
import fs from "fs";

const testImagePath = path.resolve(__dirname, "assets", "Logo-Color.jpg");
describe("QPixmap", () => {
  it("initialize empty", () => {
    const pixmap = new QPixmap();
    expect(pixmap).toBeTruthy();
  });
  it("initialize with string", () => {
    const pixmap = new QPixmap(testImagePath);
    expect(pixmap).toBeTruthy();
  });
  it("width", () => {
    const pixmap = new QPixmap(testImagePath);
    expect(pixmap.width()).toBe(1000);
  });
  it("height", () => {
    const pixmap = new QPixmap(testImagePath);
    expect(pixmap.height()).toBe(1083);
  });
  it("initialize from QVariant", () => {
    const pixmap = new QPixmap(testImagePath);
    const variant = new QVariant(pixmap.native!);
    expect(variant).toBeTruthy();
    expect(QPixmap.fromQVariant(variant).height()).toBe(pixmap.height());
  });
  it("scaled without aspect ratio", () => {
    const pixmap = new QPixmap(testImagePath);
    const newPixmap = pixmap.scaled(
      300,
      340,
      AspectRatioMode.IgnoreAspectRatio
    );
    expect(newPixmap.width()).toBe(300);
    expect(newPixmap.height()).toBe(340);
  });
  it("scaled with aspect ratio", () => {
    const pixmap = new QPixmap(testImagePath);
    const newPixmap = pixmap.scaled(100, 100, AspectRatioMode.KeepAspectRatio);
    expect(newPixmap.width()).toBe(92);
    expect(newPixmap.height()).toBe(100);
  });
  it("load from file", () => {
    const pixmap = new QPixmap();
    expect(pixmap.height()).toBe(0);
    const isLoaded = pixmap.load(testImagePath);
    expect(isLoaded).toBe(true);
    expect(pixmap.height()).toBe(1083);
  });
  it("load from data", () => {
    const pixmap = new QPixmap();
    expect(pixmap.height()).toBe(0);
    const arrayBuffer = fs.readFileSync(testImagePath, null).buffer;
    const isLoaded = pixmap.loadFromData(Buffer.from(arrayBuffer));
    expect(isLoaded).toBe(true);
    expect(pixmap.height()).toBe(1083);
  });
  it("save to a file", async () => {
    const outputFilePath = path.resolve(__dirname, "assets", "Logo-Color.png");
    await new Promise((resolve) => fs.unlink(outputFilePath, resolve));
    const pixmap = new QPixmap(testImagePath);
    pixmap.save(outputFilePath);
    const exists = await new Promise((resolve) =>
      fs.exists(outputFilePath, resolve)
    );
    expect(exists).toBe(true);
  });
  it("save to a file of different format", async () => {
    const outputFilePath = path.resolve(__dirname, "assets", "Logo-Color.jpg");
    await new Promise((resolve) => fs.unlink(outputFilePath, resolve));
    const pixmap = new QPixmap(testImagePath);
    pixmap.save(outputFilePath, "JPG");
    const exists = await new Promise((resolve) =>
      fs.exists(outputFilePath, resolve)
    );
    expect(exists).toBe(true);
  });
});