/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

"use strict";

// Test that shapes are updated correctly on mouse events in transform mode.

const TEST_URL = URL_ROOT + "doc_inspector_highlighter_cssshapes.html";
const HIGHLIGHTER_TYPE = "ShapesHighlighter";
const SHAPE_SELECTORS = ["#polygon-transform", "#circle", "#ellipse", "#inset"];

add_task(async function () {
  const env = await openInspectorForURL(TEST_URL);
  const helper = await getHighlighterHelperFor(HIGHLIGHTER_TYPE)(env);
  const { highlighterTestFront, inspector } = env;
  const view = selectRuleView(inspector);
  const highlighters = view.highlighters;
  const config = {
    inspector,
    view,
    highlighters,
    highlighterTestFront,
    helper,
  };

  await testTranslate(config);
});

async function setup(config) {
  const { inspector, view, selector, property, options } = config;
  await selectNode(selector, inspector);
  await toggleShapesHighlighter(view, selector, property, true, options);
}

async function teardown(config) {
  const { view, selector, property } = config;
  info(`Turn off shapes highlighter for ${selector}`);
  await toggleShapesHighlighter(view, selector, property, false);
}

async function testTranslate(config) {
  const { helper, highlighters } = config;
  const options = { transformMode: true };
  const property = "clip-path";

  for (const selector of SHAPE_SELECTORS) {
    await setup({ selector, property, options, ...config });
    const { mouse } = helper;

    const { center, width, height } = await getBoundingBoxInPx({
      selector,
      ...config,
    });
    const [x, y] = center;
    const dx = width / 10;
    const dy = height / 10;
    let onShapeChangeApplied;

    info(`Translating ${selector}`);
    onShapeChangeApplied = highlighters.once(
      "shapes-highlighter-changes-applied"
    );
    await mouse.down(x, y, selector);
    await mouse.move(x + dx, y + dy, selector);
    await mouse.up(x + dx, y + dy, selector);
    await reflowContentPage();
    await onShapeChangeApplied;

    let newBB = await getBoundingBoxInPx({ selector, ...config });
    isnot(newBB.center[0], x, `${selector} translated on y axis`);
    isnot(newBB.center[1], y, `${selector} translated on x axis`);

    info(`Translating ${selector} back`);
    onShapeChangeApplied = highlighters.once(
      "shapes-highlighter-changes-applied"
    );
    await mouse.down(x + dx, y + dy, selector);
    await mouse.move(x, y, selector);
    await mouse.up(x, y, selector);
    await reflowContentPage();
    await onShapeChangeApplied;

    newBB = await getBoundingBoxInPx({ selector, ...config });
    is(newBB.center[0], x, `${selector} translated back on x axis`);
    is(newBB.center[1], y, `${selector} translated back on y axis`);

    await teardown({ selector, property, ...config });
  }
}

async function getBoundingBoxInPx(config) {
  const { highlighterTestFront, selector, inspector } = config;
  const quads = await getAllAdjustedQuadsForContentPageElement(selector);
  const { width, height } = quads.content[0].bounds;
  const highlightedNode = await getNodeFront(selector, inspector);
  const highlighterFront =
    inspector.inspectorFront.getKnownHighlighter(HIGHLIGHTER_TYPE);
  const computedStyle =
    await highlightedNode.inspectorFront.pageStyle.getComputed(highlightedNode);
  const paddingTop = parseFloat(computedStyle["padding-top"].value);
  const paddingLeft = parseFloat(computedStyle["padding-left"].value);
  // path is always of form "Mx y Lx y Lx y Lx y Z", where x/y are numbers
  const path = await highlighterTestFront.getHighlighterNodeAttribute(
    "shapes-bounding-box",
    "d",
    highlighterFront
  );
  const coords = path
    .replace(/[MLZ]/g, "")
    .split(" ")
    .map((n, i) => {
      return i % 2 === 0
        ? paddingLeft + (width * n) / 100
        : paddingTop + (height * n) / 100;
    });

  const nw = [coords[0], coords[1]];
  const ne = [coords[2], coords[3]];
  const se = [coords[4], coords[5]];
  const sw = [coords[6], coords[7]];
  const center = [(nw[0] + se[0]) / 2, (nw[1] + se[1]) / 2];
  const shapeWidth = Math.sqrt((ne[0] - nw[0]) ** 2 + (ne[1] - nw[1]) ** 2);
  const shapeHeight = Math.sqrt((sw[0] - nw[0]) ** 2 + (sw[1] - nw[1]) ** 2);

  return { nw, ne, se, sw, center, width: shapeWidth, height: shapeHeight };
}
