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

"use strict";

// Checking properties orders and overrides in the rule-view.

const TEST_URI = "<style>#testid {}</style><div id='testid'>Styled Node</div>";

add_task(async function () {
  await addTab("data:text/html;charset=utf-8," + encodeURIComponent(TEST_URI));
  const { inspector, view } = await openRuleView();
  await selectNode("#testid", inspector);

  const elementStyle = view._elementStyle;
  const elementRule = elementStyle.rules[1];

  info("Checking rules insertion order and checking the applied style");
  const firstProp = await addProperty(view, 1, "background-color", "green");
  let secondProp = await addProperty(view, 1, "background-color", "blue");

  is(elementRule.textProps[0], firstProp, "Rules should be in addition order.");
  is(
    elementRule.textProps[1],
    secondProp,
    "Rules should be in addition order."
  );

  // rgb(0, 0, 255) = blue
  is(
    await getValue("#testid", "background-color"),
    "rgb(0, 0, 255)",
    "Second property should have been used."
  );

  info("Removing the second property and checking the applied style again");
  await removeProperty(view, secondProp);
  // rgb(0, 128, 0) = green
  is(
    await getValue("#testid", "background-color"),
    "rgb(0, 128, 0)",
    "After deleting second property, first should be used."
  );

  info(
    "Creating a new second property and checking that the insertion order " +
      "is still the same"
  );

  secondProp = await addProperty(view, 1, "background-color", "blue");

  is(
    await getValue("#testid", "background-color"),
    "rgb(0, 0, 255)",
    "New property should be used."
  );
  is(
    elementRule.textProps[0],
    firstProp,
    "Rules shouldn't have switched places."
  );
  is(
    elementRule.textProps[1],
    secondProp,
    "Rules shouldn't have switched places."
  );

  info("Disabling the second property and checking the applied style");
  await togglePropStatus(view, secondProp);

  is(
    await getValue("#testid", "background-color"),
    "rgb(0, 128, 0)",
    "After disabling second property, first value should be used"
  );

  info("Disabling the first property too and checking the applied style");
  await togglePropStatus(view, firstProp);

  is(
    await getValue("#testid", "background-color"),
    "rgba(0, 0, 0, 0)",
    "After disabling both properties, value should be empty."
  );

  info("Re-enabling the second propertyt and checking the applied style");
  await togglePropStatus(view, secondProp);

  is(
    await getValue("#testid", "background-color"),
    "rgb(0, 0, 255)",
    "Value should be set correctly after re-enabling"
  );

  info(
    "Re-enabling the first property and checking the insertion order " +
      "is still respected"
  );
  await togglePropStatus(view, firstProp);

  is(
    await getValue("#testid", "background-color"),
    "rgb(0, 0, 255)",
    "Re-enabling an earlier property shouldn't make it override " +
      "a later property."
  );
  is(
    elementRule.textProps[0],
    firstProp,
    "Rules shouldn't have switched places."
  );
  is(
    elementRule.textProps[1],
    secondProp,
    "Rules shouldn't have switched places."
  );
  info("Modifying the first property and checking the applied style");
  await setProperty(view, firstProp, "purple");

  is(
    await getValue("#testid", "background-color"),
    "rgb(0, 0, 255)",
    "Modifying an earlier property shouldn't override a later property."
  );
});

async function getValue(selector, propName) {
  const value = await getComputedStyleProperty(selector, null, propName);
  return value;
}