import ReactDOM from "react-dom";
import { render } from "./test-utils";
import ExcalidrawApp from "../excalidraw-app";
import { reseed } from "../random";
import {
  actionSendBackward,
  actionBringForward,
  actionBringToFront,
  actionSendToBack,
  actionDuplicateSelection,
} from "../actions";
import { AppState } from "../types";
import { API } from "./helpers/api";
import { selectGroupsForSelectedElements } from "../groups";

// Unmount ReactDOM from root
ReactDOM.unmountComponentAtNode(document.getElementById("root")!);

beforeEach(() => {
  localStorage.clear();
  reseed(7);
});

const { h } = window;

const populateElements = (
  elements: {
    id: string;
    isDeleted?: boolean;
    isSelected?: boolean;
    groupIds?: string[];
    y?: number;
    x?: number;
    width?: number;
    height?: number;
    containerId?: string;
  }[],
  appState?: Partial<AppState>,
) => {
  const selectedElementIds: any = {};

  const newElements = elements.map(
    ({
      id,
      isDeleted = false,
      isSelected = false,
      groupIds = [],
      y = 100,
      x = 100,
      width = 100,
      height = 100,
      containerId = null,
    }) => {
      const element = API.createElement({
        type: containerId ? "text" : "rectangle",
        id,
        isDeleted,
        x,
        y,
        width,
        height,
        groupIds,
        containerId,
      });
      if (isSelected) {
        selectedElementIds[element.id] = true;
      }
      return element;
    },
  );

  // initialize `boundElements` on containers, if applicable
  h.elements = newElements.map((element, index, elements) => {
    const nextElement = elements[index + 1];
    if (
      nextElement &&
      "containerId" in nextElement &&
      element.id === nextElement.containerId
    ) {
      return {
        ...element,
        boundElements: [{ type: "text", id: nextElement.id }],
      };
    }
    return element;
  });

  h.setState({
    ...selectGroupsForSelectedElements(
      { ...h.state, ...appState, selectedElementIds },
      h.elements,
      h.state,
      null,
    ),
    ...appState,
    selectedElementIds,
  });

  return selectedElementIds;
};

type Actions =
  | typeof actionBringForward
  | typeof actionSendBackward
  | typeof actionBringToFront
  | typeof actionSendToBack;

const assertZindex = ({
  elements,
  appState,
  operations,
}: {
  elements: {
    id: string;
    isDeleted?: true;
    isSelected?: true;
    groupIds?: string[];
    containerId?: string;
  }[];
  appState?: Partial<AppState>;
  operations: [Actions, string[]][];
}) => {
  const selectedElementIds = populateElements(elements, appState);

  operations.forEach(([action, expected]) => {
    h.app.actionManager.executeAction(action);
    expect(h.elements.map((element) => element.id)).toEqual(expected);
    expect(h.state.selectedElementIds).toEqual(selectedElementIds);
  });
};

describe("z-index manipulation", () => {
  beforeEach(async () => {
    await render(<ExcalidrawApp />);
  });

  it("send back", () => {
    assertZindex({
      elements: [
        { id: "A" },
        { id: "B", isDeleted: true },
        { id: "C", isDeleted: true },
        { id: "D", isSelected: true },
      ],
      operations: [
        [actionSendBackward, ["D", "A", "B", "C"]],
        // noop
        [actionSendBackward, ["D", "A", "B", "C"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A", isSelected: true },
        { id: "B", isSelected: true },
        { id: "C", isSelected: true },
      ],
      operations: [
        // noop
        [actionSendBackward, ["A", "B", "C"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A", isDeleted: true },
        { id: "B" },
        { id: "C", isDeleted: true },
        { id: "D", isSelected: true },
      ],
      operations: [[actionSendBackward, ["A", "D", "B", "C"]]],
    });

    assertZindex({
      elements: [
        { id: "A" },
        { id: "B", isDeleted: true },
        { id: "C", isDeleted: true },
        { id: "D", isSelected: true },
        { id: "E", isSelected: true },
        { id: "F" },
      ],
      operations: [
        [actionSendBackward, ["D", "E", "A", "B", "C", "F"]],
        // noop
        [actionSendBackward, ["D", "E", "A", "B", "C", "F"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A" },
        { id: "B" },
        { id: "C", isDeleted: true },
        { id: "D", isDeleted: true },
        { id: "E", isSelected: true },
        { id: "F" },
        { id: "G", isSelected: true },
      ],
      operations: [
        [actionSendBackward, ["A", "E", "B", "C", "D", "G", "F"]],
        [actionSendBackward, ["E", "A", "G", "B", "C", "D", "F"]],
        [actionSendBackward, ["E", "G", "A", "B", "C", "D", "F"]],
        // noop
        [actionSendBackward, ["E", "G", "A", "B", "C", "D", "F"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A" },
        { id: "B" },
        { id: "C", isDeleted: true },
        { id: "D", isSelected: true },
        { id: "E", isDeleted: true },
        { id: "F", isSelected: true },
        { id: "G" },
      ],
      operations: [
        [actionSendBackward, ["A", "D", "E", "F", "B", "C", "G"]],
        [actionSendBackward, ["D", "E", "F", "A", "B", "C", "G"]],
        // noop
        [actionSendBackward, ["D", "E", "F", "A", "B", "C", "G"]],
      ],
    });

    // grouped elements should be atomic
    // -------------------------------------------------------------------------

    assertZindex({
      elements: [
        { id: "A" },
        { id: "B", groupIds: ["g1"] },
        { id: "C", groupIds: ["g1"] },
        { id: "D", isDeleted: true },
        { id: "E", isDeleted: true },
        { id: "F", isSelected: true },
      ],
      operations: [
        [actionSendBackward, ["A", "F", "B", "C", "D", "E"]],
        [actionSendBackward, ["F", "A", "B", "C", "D", "E"]],
        // noop
        [actionSendBackward, ["F", "A", "B", "C", "D", "E"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A" },
        { id: "B", groupIds: ["g2", "g1"] },
        { id: "C", groupIds: ["g2", "g1"] },
        { id: "D", groupIds: ["g1"] },
        { id: "E", isDeleted: true },
        { id: "F", isSelected: true },
      ],
      operations: [
        [actionSendBackward, ["A", "F", "B", "C", "D", "E"]],
        [actionSendBackward, ["F", "A", "B", "C", "D", "E"]],
        // noop
        [actionSendBackward, ["F", "A", "B", "C", "D", "E"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A" },
        { id: "B", groupIds: ["g1"] },
        { id: "C", groupIds: ["g2", "g1"] },
        { id: "D", groupIds: ["g2", "g1"] },
        { id: "E", isDeleted: true },
        { id: "F", isSelected: true },
      ],
      operations: [
        [actionSendBackward, ["A", "F", "B", "C", "D", "E"]],
        [actionSendBackward, ["F", "A", "B", "C", "D", "E"]],
        // noop
        [actionSendBackward, ["F", "A", "B", "C", "D", "E"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A" },
        { id: "B1", groupIds: ["g1"] },
        { id: "C1", groupIds: ["g1"] },
        { id: "D2", groupIds: ["g2"], isSelected: true },
        { id: "E2", groupIds: ["g2"], isSelected: true },
      ],
      appState: {
        editingGroupId: null,
      },
      operations: [[actionSendBackward, ["A", "D2", "E2", "B1", "C1"]]],
    });

    // in-group siblings
    // -------------------------------------------------------------------------

    assertZindex({
      elements: [
        { id: "A" },
        { id: "B", groupIds: ["g1"] },
        { id: "C", groupIds: ["g2", "g1"] },
        { id: "D", groupIds: ["g2", "g1"], isSelected: true },
      ],
      appState: {
        editingGroupId: "g2",
      },
      operations: [
        [actionSendBackward, ["A", "B", "D", "C"]],
        // noop (prevented)
        [actionSendBackward, ["A", "B", "D", "C"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A" },
        { id: "B", groupIds: ["g2", "g1"] },
        { id: "C", groupIds: ["g2", "g1"] },
        { id: "D", groupIds: ["g1"], isSelected: true },
      ],
      appState: {
        editingGroupId: "g1",
      },
      operations: [
        [actionSendBackward, ["A", "D", "B", "C"]],
        // noop (prevented)
        [actionSendBackward, ["A", "D", "B", "C"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A" },
        { id: "B", groupIds: ["g1"] },
        { id: "C", groupIds: ["g2", "g1"], isSelected: true },
        { id: "D", groupIds: ["g2", "g1"], isDeleted: true },
        { id: "E", groupIds: ["g2", "g1"], isSelected: true },
      ],
      appState: {
        editingGroupId: "g1",
      },
      operations: [
        [actionSendBackward, ["A", "C", "D", "E", "B"]],
        // noop (prevented)
        [actionSendBackward, ["A", "C", "D", "E", "B"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A" },
        { id: "B", groupIds: ["g1"] },
        { id: "C", groupIds: ["g2", "g1"] },
        { id: "D", groupIds: ["g2", "g1"] },
        { id: "E", groupIds: ["g3", "g1"], isSelected: true },
        { id: "F", groupIds: ["g3", "g1"], isSelected: true },
      ],
      appState: {
        editingGroupId: "g1",
      },
      operations: [
        [actionSendBackward, ["A", "B", "E", "F", "C", "D"]],
        [actionSendBackward, ["A", "E", "F", "B", "C", "D"]],
        // noop (prevented)
        [actionSendBackward, ["A", "E", "F", "B", "C", "D"]],
      ],
    });

    // invalid z-indexes across groups (legacy) → allow to sort to next sibling
    assertZindex({
      elements: [
        { id: "A", groupIds: ["g1"] },
        { id: "B", groupIds: ["g2"] },
        { id: "C", groupIds: ["g1"] },
        { id: "D", groupIds: ["g2"], isSelected: true },
        { id: "E", groupIds: ["g2"], isSelected: true },
      ],
      appState: {
        editingGroupId: "g2",
      },
      operations: [
        [actionSendBackward, ["A", "D", "E", "B", "C"]],
        // noop
        [actionSendBackward, ["A", "D", "E", "B", "C"]],
      ],
    });

    // invalid z-indexes across groups (legacy) → allow to sort to next sibling
    assertZindex({
      elements: [
        { id: "A", groupIds: ["g1"] },
        { id: "B", groupIds: ["g2"] },
        { id: "C", groupIds: ["g1"] },
        { id: "D", groupIds: ["g2"], isSelected: true },
        { id: "F" },
        { id: "G", groupIds: ["g2"], isSelected: true },
      ],
      appState: {
        editingGroupId: "g2",
      },
      operations: [
        [actionSendBackward, ["A", "D", "G", "B", "C", "F"]],
        // noop
        [actionSendBackward, ["A", "D", "G", "B", "C", "F"]],
      ],
    });
  });

  it("bring forward", () => {
    assertZindex({
      elements: [
        { id: "A" },
        { id: "B", isSelected: true },
        { id: "C", isSelected: true },
        { id: "D", isDeleted: true },
        { id: "E" },
      ],
      operations: [
        [actionBringForward, ["A", "D", "E", "B", "C"]],
        // noop
        [actionBringForward, ["A", "D", "E", "B", "C"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A", isSelected: true },
        { id: "B", isSelected: true },
        { id: "C", isSelected: true },
      ],
      operations: [
        // noop
        [actionBringForward, ["A", "B", "C"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A", isSelected: true },
        { id: "B", isDeleted: true },
        { id: "C", isDeleted: true },
        { id: "D" },
        { id: "E", isSelected: true },
        { id: "F", isDeleted: true },
        { id: "G" },
      ],
      operations: [
        [actionBringForward, ["B", "C", "D", "A", "F", "G", "E"]],
        [actionBringForward, ["B", "C", "D", "F", "G", "A", "E"]],
        // noop
        [actionBringForward, ["B", "C", "D", "F", "G", "A", "E"]],
      ],
    });

    // grouped elements should be atomic
    // -------------------------------------------------------------------------

    assertZindex({
      elements: [
        { id: "A", isSelected: true },
        { id: "B", isDeleted: true },
        { id: "C", isDeleted: true },
        { id: "D", groupIds: ["g1"] },
        { id: "E", groupIds: ["g1"] },
        { id: "F" },
      ],
      operations: [
        [actionBringForward, ["B", "C", "D", "E", "A", "F"]],
        [actionBringForward, ["B", "C", "D", "E", "F", "A"]],
        // noop
        [actionBringForward, ["B", "C", "D", "E", "F", "A"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A" },
        { id: "B", isSelected: true },
        { id: "C", groupIds: ["g2", "g1"] },
        { id: "D", groupIds: ["g2", "g1"] },
        { id: "E", groupIds: ["g1"] },
        { id: "F" },
      ],
      operations: [
        [actionBringForward, ["A", "C", "D", "E", "B", "F"]],
        [actionBringForward, ["A", "C", "D", "E", "F", "B"]],
        // noop
        [actionBringForward, ["A", "C", "D", "E", "F", "B"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A" },
        { id: "B", isSelected: true },
        { id: "C", groupIds: ["g1"] },
        { id: "D", groupIds: ["g2", "g1"] },
        { id: "E", groupIds: ["g2", "g1"] },
        { id: "F" },
      ],
      operations: [
        [actionBringForward, ["A", "C", "D", "E", "B", "F"]],
        [actionBringForward, ["A", "C", "D", "E", "F", "B"]],
        // noop
        [actionBringForward, ["A", "C", "D", "E", "F", "B"]],
      ],
    });

    // in-group siblings
    // -------------------------------------------------------------------------

    assertZindex({
      elements: [
        { id: "A" },
        { id: "B", groupIds: ["g2", "g1"], isSelected: true },
        { id: "C", groupIds: ["g2", "g1"] },
        { id: "D", groupIds: ["g1"] },
      ],
      appState: {
        editingGroupId: "g2",
      },
      operations: [
        [actionBringForward, ["A", "C", "B", "D"]],
        // noop (prevented)
        [actionBringForward, ["A", "C", "B", "D"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A", groupIds: ["g1"], isSelected: true },
        { id: "B", groupIds: ["g2", "g1"] },
        { id: "C", groupIds: ["g2", "g1"] },
        { id: "D" },
      ],
      appState: {
        editingGroupId: "g1",
      },
      operations: [
        [actionBringForward, ["B", "C", "A", "D"]],
        // noop (prevented)
        [actionBringForward, ["B", "C", "A", "D"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A", groupIds: ["g2", "g1"], isSelected: true },
        { id: "B", groupIds: ["g2", "g1"], isSelected: true },
        { id: "C", groupIds: ["g1"] },
        { id: "D" },
      ],
      appState: {
        editingGroupId: "g1",
      },
      operations: [
        [actionBringForward, ["C", "A", "B", "D"]],
        // noop (prevented)
        [actionBringForward, ["C", "A", "B", "D"]],
      ],
    });

    // invalid z-indexes across groups (legacy) → allow to sort to next sibling
    assertZindex({
      elements: [
        { id: "A", groupIds: ["g2"], isSelected: true },
        { id: "B", groupIds: ["g2"], isSelected: true },
        { id: "C", groupIds: ["g1"] },
        { id: "D", groupIds: ["g2"] },
        { id: "E", groupIds: ["g1"] },
      ],
      appState: {
        editingGroupId: "g2",
      },
      operations: [
        [actionBringForward, ["C", "D", "A", "B", "E"]],
        // noop
        [actionBringForward, ["C", "D", "A", "B", "E"]],
      ],
    });

    // invalid z-indexes across groups (legacy) → allow to sort to next sibling
    assertZindex({
      elements: [
        { id: "A", groupIds: ["g2"], isSelected: true },
        { id: "B" },
        { id: "C", groupIds: ["g2"], isSelected: true },
        { id: "D", groupIds: ["g1"] },
        { id: "E", groupIds: ["g2"] },
        { id: "F", groupIds: ["g1"] },
      ],
      appState: {
        editingGroupId: "g2",
      },
      operations: [
        [actionBringForward, ["B", "D", "E", "A", "C", "F"]],
        // noop
        [actionBringForward, ["B", "D", "E", "A", "C", "F"]],
      ],
    });
  });

  it("bring to front", () => {
    assertZindex({
      elements: [
        { id: "0" },
        { id: "A", isSelected: true },
        { id: "B", isDeleted: true },
        { id: "C", isDeleted: true },
        { id: "D" },
        { id: "E", isSelected: true },
        { id: "F", isDeleted: true },
        { id: "G" },
      ],
      operations: [
        [actionBringToFront, ["0", "B", "C", "D", "F", "G", "A", "E"]],
        // noop
        [actionBringToFront, ["0", "B", "C", "D", "F", "G", "A", "E"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A", isSelected: true },
        { id: "B", isSelected: true },
        { id: "C", isSelected: true },
      ],
      operations: [
        // noop
        [actionBringToFront, ["A", "B", "C"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A" },
        { id: "B", isSelected: true },
        { id: "C", isSelected: true },
      ],
      operations: [
        // noop
        [actionBringToFront, ["A", "B", "C"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A", isSelected: true },
        { id: "B", isSelected: true },
        { id: "C" },
      ],
      operations: [
        [actionBringToFront, ["C", "A", "B"]],
        // noop
        [actionBringToFront, ["C", "A", "B"]],
      ],
    });

    // in-group sorting
    // -------------------------------------------------------------------------

    assertZindex({
      elements: [
        { id: "A" },
        { id: "B", groupIds: ["g1"] },
        { id: "C", groupIds: ["g1"], isSelected: true },
        { id: "D", groupIds: ["g1"] },
        { id: "E", groupIds: ["g1"], isSelected: true },
        { id: "F", groupIds: ["g2", "g1"] },
        { id: "G", groupIds: ["g2", "g1"] },
        { id: "H", groupIds: ["g3", "g1"] },
        { id: "I", groupIds: ["g3", "g1"] },
      ],
      appState: {
        editingGroupId: "g1",
      },
      operations: [
        [actionBringToFront, ["A", "B", "D", "F", "G", "H", "I", "C", "E"]],
        // noop (prevented)
        [actionBringToFront, ["A", "B", "D", "F", "G", "H", "I", "C", "E"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A" },
        { id: "B", groupIds: ["g2", "g1"], isSelected: true },
        { id: "D", groupIds: ["g2", "g1"] },
        { id: "C", groupIds: ["g1"] },
      ],
      appState: {
        editingGroupId: "g2",
      },
      operations: [
        [actionBringToFront, ["A", "D", "B", "C"]],
        // noop (prevented)
        [actionBringToFront, ["A", "D", "B", "C"]],
      ],
    });

    // invalid z-indexes across groups (legacy) → allow to sort to next sibling
    assertZindex({
      elements: [
        { id: "A", groupIds: ["g2", "g3"], isSelected: true },
        { id: "B", groupIds: ["g1", "g3"] },
        { id: "C", groupIds: ["g2", "g3"] },
        { id: "D", groupIds: ["g1", "g3"] },
      ],
      appState: {
        editingGroupId: "g2",
      },
      operations: [
        [actionBringToFront, ["B", "C", "A", "D"]],
        // noop
        [actionBringToFront, ["B", "C", "A", "D"]],
      ],
    });

    // invalid z-indexes across groups (legacy) → allow to sort to next sibling
    assertZindex({
      elements: [
        { id: "A", groupIds: ["g2"], isSelected: true },
        { id: "B", groupIds: ["g1"] },
        { id: "C", groupIds: ["g2"] },
        { id: "D", groupIds: ["g1"] },
      ],
      appState: {
        editingGroupId: "g2",
      },
      operations: [
        [actionBringToFront, ["B", "C", "A", "D"]],
        // noop
        [actionBringToFront, ["B", "C", "A", "D"]],
      ],
    });
  });

  it("send to back", () => {
    assertZindex({
      elements: [
        { id: "A" },
        { id: "B", isDeleted: true },
        { id: "C" },
        { id: "D", isDeleted: true },
        { id: "E", isSelected: true },
        { id: "F", isDeleted: true },
        { id: "G" },
        { id: "H", isSelected: true },
        { id: "I" },
      ],
      operations: [
        [actionSendToBack, ["E", "H", "A", "B", "C", "D", "F", "G", "I"]],
        // noop
        [actionSendToBack, ["E", "H", "A", "B", "C", "D", "F", "G", "I"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A", isSelected: true },
        { id: "B", isSelected: true },
        { id: "C", isSelected: true },
      ],
      operations: [
        // noop
        [actionSendToBack, ["A", "B", "C"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A", isSelected: true },
        { id: "B", isSelected: true },
        { id: "C" },
      ],
      operations: [
        // noop
        [actionSendToBack, ["A", "B", "C"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A" },
        { id: "B", isSelected: true },
        { id: "C", isSelected: true },
      ],
      operations: [
        [actionSendToBack, ["B", "C", "A"]],
        // noop
        [actionSendToBack, ["B", "C", "A"]],
      ],
    });

    // in-group sorting
    // -------------------------------------------------------------------------

    assertZindex({
      elements: [
        { id: "A" },
        { id: "B", groupIds: ["g2", "g1"] },
        { id: "C", groupIds: ["g2", "g1"] },
        { id: "D", groupIds: ["g3", "g1"] },
        { id: "E", groupIds: ["g3", "g1"] },
        { id: "F", groupIds: ["g1"], isSelected: true },
        { id: "G", groupIds: ["g1"] },
        { id: "H", groupIds: ["g1"], isSelected: true },
        { id: "I", groupIds: ["g1"] },
      ],
      appState: {
        editingGroupId: "g1",
      },
      operations: [
        [actionSendToBack, ["A", "F", "H", "B", "C", "D", "E", "G", "I"]],
        // noop (prevented)
        [actionSendToBack, ["A", "F", "H", "B", "C", "D", "E", "G", "I"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A" },
        { id: "B", groupIds: ["g1"] },
        { id: "C", groupIds: ["g2", "g1"] },
        { id: "D", groupIds: ["g2", "g1"], isSelected: true },
      ],
      appState: {
        editingGroupId: "g2",
      },
      operations: [
        [actionSendToBack, ["A", "B", "D", "C"]],
        // noop (prevented)
        [actionSendToBack, ["A", "B", "D", "C"]],
      ],
    });

    // invalid z-indexes across groups (legacy) → allow to sort to next sibling
    assertZindex({
      elements: [
        { id: "A", groupIds: ["g1", "g3"] },
        { id: "B", groupIds: ["g2", "g3"] },
        { id: "C", groupIds: ["g1", "g3"] },
        { id: "D", groupIds: ["g2", "g3"], isSelected: true },
      ],
      appState: {
        editingGroupId: "g2",
      },
      operations: [
        [actionSendToBack, ["A", "D", "B", "C"]],
        // noop
        [actionSendToBack, ["A", "D", "B", "C"]],
      ],
    });

    // invalid z-indexes across groups (legacy) → allow to sort to next sibling
    assertZindex({
      elements: [
        { id: "A", groupIds: ["g1"] },
        { id: "B", groupIds: ["g2"] },
        { id: "C", groupIds: ["g1"] },
        { id: "D", groupIds: ["g2"], isSelected: true },
      ],
      appState: {
        editingGroupId: "g2",
      },
      operations: [
        [actionSendToBack, ["A", "D", "B", "C"]],
        // noop
        [actionSendToBack, ["A", "D", "B", "C"]],
      ],
    });
  });

  it("duplicating elements should retain zindex integrity", () => {
    populateElements([
      { id: "A", isSelected: true },
      { id: "B", isSelected: true },
    ]);
    h.app.actionManager.executeAction(actionDuplicateSelection);
    expect(h.elements).toMatchObject([
      { id: "A" },
      { id: "A_copy" },
      { id: "B" },
      { id: "B_copy" },
    ]);

    populateElements([
      { id: "A", groupIds: ["g1"], isSelected: true },
      { id: "B", groupIds: ["g1"], isSelected: true },
    ]);
    h.app.actionManager.executeAction(actionDuplicateSelection);
    expect(h.elements).toMatchObject([
      { id: "A" },
      { id: "B" },
      {
        id: "A_copy",

        groupIds: [expect.stringMatching(/.{3,}/)],
      },
      {
        id: "B_copy",

        groupIds: [expect.stringMatching(/.{3,}/)],
      },
    ]);

    populateElements([
      { id: "A", groupIds: ["g1"], isSelected: true },
      { id: "B", groupIds: ["g1"], isSelected: true },
      { id: "C" },
    ]);
    h.app.actionManager.executeAction(actionDuplicateSelection);
    expect(h.elements).toMatchObject([
      { id: "A" },
      { id: "B" },
      {
        id: "A_copy",

        groupIds: [expect.stringMatching(/.{3,}/)],
      },
      {
        id: "B_copy",

        groupIds: [expect.stringMatching(/.{3,}/)],
      },
      { id: "C" },
    ]);

    populateElements([
      { id: "A", groupIds: ["g1"], isSelected: true },
      { id: "B", groupIds: ["g1"], isSelected: true },
      { id: "C", isSelected: true },
    ]);
    h.app.actionManager.executeAction(actionDuplicateSelection);
    expect(h.elements.map((element) => element.id)).toEqual([
      "A",
      "B",
      "A_copy",
      "B_copy",
      "C",
      "C_copy",
    ]);

    populateElements([
      { id: "A", groupIds: ["g1"], isSelected: true },
      { id: "B", groupIds: ["g1"], isSelected: true },
      { id: "C", groupIds: ["g2"], isSelected: true },
      { id: "D", groupIds: ["g2"], isSelected: true },
    ]);
    h.app.actionManager.executeAction(actionDuplicateSelection);
    expect(h.elements.map((element) => element.id)).toEqual([
      "A",
      "B",
      "A_copy",
      "B_copy",
      "C",
      "D",
      "C_copy",
      "D_copy",
    ]);

    populateElements(
      [
        { id: "A", groupIds: ["g1", "g2"], isSelected: true },
        { id: "B", groupIds: ["g1", "g2"], isSelected: true },
        { id: "C", groupIds: ["g2"], isSelected: true },
      ],
      {
        selectedGroupIds: { g1: true },
      },
    );
    h.app.actionManager.executeAction(actionDuplicateSelection);
    expect(h.elements.map((element) => element.id)).toEqual([
      "A",
      "B",
      "A_copy",
      "B_copy",
      "C",
      "C_copy",
    ]);

    populateElements(
      [
        { id: "A", groupIds: ["g1", "g2"], isSelected: true },
        { id: "B", groupIds: ["g1", "g2"], isSelected: true },
        { id: "C", groupIds: ["g2"], isSelected: true },
      ],
      {
        selectedGroupIds: { g2: true },
      },
    );
    h.app.actionManager.executeAction(actionDuplicateSelection);
    expect(h.elements.map((element) => element.id)).toEqual([
      "A",
      "B",
      "C",
      "A_copy",
      "B_copy",
      "C_copy",
    ]);

    populateElements(
      [
        { id: "A", groupIds: ["g1", "g2"], isSelected: true },
        { id: "B", groupIds: ["g1", "g2"], isSelected: true },
        { id: "C", groupIds: ["g2"], isSelected: true },
        { id: "D", groupIds: ["g3", "g4"], isSelected: true },
        { id: "E", groupIds: ["g3", "g4"], isSelected: true },
        { id: "F", groupIds: ["g4"], isSelected: true },
      ],
      {
        selectedGroupIds: { g2: true, g4: true },
      },
    );
    h.app.actionManager.executeAction(actionDuplicateSelection);
    expect(h.elements.map((element) => element.id)).toEqual([
      "A",
      "B",
      "C",
      "A_copy",
      "B_copy",
      "C_copy",
      "D",
      "E",
      "F",
      "D_copy",
      "E_copy",
      "F_copy",
    ]);

    populateElements(
      [
        { id: "A", groupIds: ["g1", "g2"], isSelected: true },
        { id: "B", groupIds: ["g1", "g2"] },
        { id: "C", groupIds: ["g2"] },
      ],
      { editingGroupId: "g1" },
    );
    h.app.actionManager.executeAction(actionDuplicateSelection);
    expect(h.elements.map((element) => element.id)).toEqual([
      "A",
      "A_copy",
      "B",
      "C",
    ]);

    populateElements(
      [
        { id: "A", groupIds: ["g1", "g2"] },
        { id: "B", groupIds: ["g1", "g2"], isSelected: true },
        { id: "C", groupIds: ["g2"] },
      ],
      { editingGroupId: "g1" },
    );
    h.app.actionManager.executeAction(actionDuplicateSelection);
    expect(h.elements.map((element) => element.id)).toEqual([
      "A",
      "B",
      "B_copy",
      "C",
    ]);

    populateElements(
      [
        { id: "A", groupIds: ["g1", "g2"], isSelected: true },
        { id: "B", groupIds: ["g1", "g2"], isSelected: true },
        { id: "C", groupIds: ["g2"] },
      ],
      { editingGroupId: "g1" },
    );
    h.app.actionManager.executeAction(actionDuplicateSelection);
    expect(h.elements.map((element) => element.id)).toEqual([
      "A",
      "A_copy",
      "B",
      "B_copy",
      "C",
    ]);
  });

  it("duplicating incorrectly interleaved elements (group elements should be together) should still produce reasonable result", () => {
    populateElements([
      { id: "A", groupIds: ["g1"], isSelected: true },
      { id: "B" },
      { id: "C", groupIds: ["g1"], isSelected: true },
    ]);
    h.app.actionManager.executeAction(actionDuplicateSelection);
    expect(h.elements.map((element) => element.id)).toEqual([
      "A",
      "C",
      "A_copy",
      "C_copy",
      "B",
    ]);
  });

  it("group-selected duplication should includes deleted elements that weren't selected on account of being deleted", () => {
    populateElements([
      { id: "A", groupIds: ["g1"], isDeleted: true },
      { id: "B", groupIds: ["g1"], isSelected: true },
      { id: "C", groupIds: ["g1"], isSelected: true },
      { id: "D" },
    ]);
    expect(h.state.selectedGroupIds).toEqual({ g1: true });
    h.app.actionManager.executeAction(actionDuplicateSelection);
    expect(h.elements.map((element) => element.id)).toEqual([
      "A",
      "B",
      "C",
      "A_copy",
      "B_copy",
      "C_copy",
      "D",
    ]);
  });

  it("text-container binding should be atomic", () => {
    assertZindex({
      elements: [
        { id: "A", isSelected: true },
        { id: "B" },
        { id: "C", containerId: "B" },
      ],
      operations: [
        [actionBringForward, ["B", "C", "A"]],
        [actionSendBackward, ["A", "B", "C"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A" },
        { id: "B", isSelected: true },
        { id: "C", containerId: "B" },
      ],
      operations: [
        [actionSendBackward, ["B", "C", "A"]],
        [actionBringForward, ["A", "B", "C"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A", isSelected: true, groupIds: ["g1"] },
        { id: "B", groupIds: ["g1"] },
        { id: "C", containerId: "B", groupIds: ["g1"] },
      ],
      appState: {
        editingGroupId: "g1",
      },
      operations: [
        [actionBringForward, ["B", "C", "A"]],
        [actionSendBackward, ["A", "B", "C"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A", groupIds: ["g1"] },
        { id: "B", groupIds: ["g1"], isSelected: true },
        { id: "C", containerId: "B", groupIds: ["g1"] },
      ],
      appState: {
        editingGroupId: "g1",
      },
      operations: [
        [actionSendBackward, ["B", "C", "A"]],
        [actionBringForward, ["A", "B", "C"]],
      ],
    });

    assertZindex({
      elements: [
        { id: "A", groupIds: ["g1"] },
        { id: "B", isSelected: true, groupIds: ["g1"] },
        { id: "C" },
        { id: "D", containerId: "C" },
      ],
      appState: {
        editingGroupId: "g1",
      },
      operations: [[actionBringForward, ["A", "B", "C", "D"]]],
    });
  });
});
