/* Any copyright is dedicated to the Public Domain.
   http://creativecommons.org/publicdomain/zero/1.0/ */

"use strict";

// Tests that changing the cubic-bezier curve in the widget does change the dot animation
// preview too.

const {
  CubicBezierWidget,
} = require("resource://devtools/client/shared/widgets/CubicBezierWidget.js");
const {
  PREDEFINED,
} = require("resource://devtools/client/shared/widgets/CubicBezierPresets.js");

const TEST_URI = CHROME_URL_ROOT + "doc_cubic-bezier-01.html";

registerCleanupFunction(() => {
  Services.prefs.clearUserPref("ui.prefersReducedMotion");
});

add_task(async function () {
  const { host, doc } = await createHost("bottom", TEST_URI);
  // Unset "prefers reduced motion", otherwise the dot animation preview won't be created.
  // See Bug 1637842
  // https://developer.mozilla.org/en-US/docs/Web/CSS/Reference/At-rules/@media/prefers-reduced-motion
  await pushPref("ui.prefersReducedMotion", 0);

  const container = doc.querySelector("#cubic-bezier-container");
  const w = new CubicBezierWidget(container, PREDEFINED.linear);

  await previewDotReactsToChanges(w, [0.6, -0.28, 0.74, 0.05]);
  await previewDotReactsToChanges(w, [0.9, 0.03, 0.69, 0.22]);
  await previewDotReactsToChanges(w, [0.68, -0.55, 0.27, 1.55]);
  await previewDotReactsToChanges(w, PREDEFINED.ease, "ease");
  await previewDotReactsToChanges(w, PREDEFINED["ease-in-out"], "ease-in-out");

  w.destroy();
  host.destroy();
});

async function previewDotReactsToChanges(widget, coords, expectedEasing) {
  const onUpdated = widget.once("updated");
  widget.coordinates = coords;
  await onUpdated;

  const animatedDot = widget.timingPreview.dot;
  const animations = animatedDot.getAnimations();

  if (!expectedEasing) {
    expectedEasing = `cubic-bezier(${coords[0]}, ${coords[1]}, ${coords[2]}, ${coords[3]})`;
  }

  is(animations.length, 1, "The dot is animated");

  const goingToRight = animations[0].effect.getKeyframes()[2];
  is(
    goingToRight.easing,
    expectedEasing,
    `The easing when going to the right was set correctly to ${coords}`
  );

  const goingToLeft = animations[0].effect.getKeyframes()[6];
  is(
    goingToLeft.easing,
    expectedEasing,
    `The easing when going to the left was set correctly to ${coords}`
  );
}
