// @vitest-environment happy-dom
import { act, cleanup, fireEvent, render } from "@testing-library/react";
import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";

import { CLOSE_DRAWER_EVENT, OPEN_SPAWN_EVENT, SPAWN_SIMILAR_EVENT } from "../../uiEvents.js";
import { TOGGLE_DRAWER_EVENT } from "../../uiEvents.js";
import { Drawer } from "./Drawer.js";

/** Force the mobile media query on, whatever happy-dom's viewport says
 *  (mirrors ../layout/MultiView's own `forceMobile` in multiview.test.ts). */
function forceMobile(matches: boolean): void {
  vi.spyOn(window, "matchMedia").mockImplementation(
    (query: string) =>
      ({
        matches: query.includes("859") && matches,
        media: query,
        onchange: null,
        addEventListener() {},
        removeEventListener() {},
        addListener() {},
        removeListener() {},
        dispatchEvent: () => false,
      }) as unknown as MediaQueryList,
  );
}

function shell(): HTMLElement {
  return document.querySelector(".app-shell") as HTMLElement;
}

function touch(type: "touchstart" | "touchend", x: number, y: number): void {
  const touches = [{ clientX: x, clientY: y }];
  const event = new Event(type, { bubbles: true }) as unknown as {
    touches: typeof touches;
    changedTouches: typeof touches;
  };
  event.touches = touches;
  event.changedTouches = touches;
  act(() => {
    document.dispatchEvent(event as unknown as Event);
  });
}

beforeEach(() => forceMobile(true));

afterEach(() => {
  cleanup();
  vi.restoreAllMocks();
});

function openViaToggle(): void {
  act(() => {
    document.dispatchEvent(new CustomEvent(TOGGLE_DRAWER_EVENT));
  });
}

describe("Drawer (#35)", () => {
  it("toggles open on the toggle event, off on desktop by class alone", () => {
    render(
      <Drawer sidebar={<div className="tree-leaf">row</div>}>
        <div>content</div>
      </Drawer>,
    );
    expect(shell().classList.contains("drawer-open")).toBe(false);
    openViaToggle();
    expect(shell().classList.contains("drawer-open")).toBe(true);
  });

  it("closes when a session row is tapped", () => {
    render(
      <Drawer sidebar={<div className="tree-leaf">row</div>}>
        <div>content</div>
      </Drawer>,
    );
    openViaToggle();
    fireEvent.click(document.querySelector(".tree-leaf") as HTMLElement);
    expect(shell().classList.contains("drawer-open")).toBe(false);
  });

  it("closes when a spawn is requested", () => {
    render(
      <Drawer sidebar={<div className="tree-leaf">row</div>}>
        <div>content</div>
      </Drawer>,
    );
    openViaToggle();
    act(() => {
      document.dispatchEvent(new CustomEvent(OPEN_SPAWN_EVENT));
    });
    expect(shell().classList.contains("drawer-open")).toBe(false);
  });

  it("closes when spawn similar is requested", () => {
    render(
      <Drawer sidebar={<div className="tree-leaf">row</div>}>
        <div>content</div>
      </Drawer>,
    );
    openViaToggle();
    act(() => {
      document.dispatchEvent(new CustomEvent(SPAWN_SIMILAR_EVENT, { detail: {} }));
    });
    expect(shell().classList.contains("drawer-open")).toBe(false);
  });

  it("closes on the close-drawer event (after spawn lands)", () => {
    render(
      <Drawer sidebar={<div className="tree-leaf">row</div>}>
        <div>content</div>
      </Drawer>,
    );
    openViaToggle();
    act(() => {
      document.dispatchEvent(new CustomEvent(CLOSE_DRAWER_EVENT));
    });
    expect(shell().classList.contains("drawer-open")).toBe(false);
  });

  it("closes on a backdrop click", () => {
    render(
      <Drawer sidebar={<div className="tree-leaf">row</div>}>
        <div>content</div>
      </Drawer>,
    );
    openViaToggle();
    fireEvent.click(document.querySelector(".mv-backdrop") as HTMLElement);
    expect(shell().classList.contains("drawer-open")).toBe(false);
  });

  it("opens on a rightward swipe and closes on a leftward one, only on mobile", () => {
    render(
      <Drawer sidebar={<div className="tree-leaf">row</div>}>
        <div>content</div>
      </Drawer>,
    );
    touch("touchstart", 0, 100);
    touch("touchend", 100, 100);
    expect(shell().classList.contains("drawer-open")).toBe(true);

    touch("touchstart", 100, 100);
    touch("touchend", 0, 100);
    expect(shell().classList.contains("drawer-open")).toBe(false);
  });

  it("ignores swipes on desktop", () => {
    forceMobile(false);
    render(
      <Drawer sidebar={<div className="tree-leaf">row</div>}>
        <div>content</div>
      </Drawer>,
    );
    touch("touchstart", 0, 100);
    touch("touchend", 100, 100);
    expect(shell().classList.contains("drawer-open")).toBe(false);
  });

  it("ignores a mostly-vertical or too-short gesture", () => {
    render(
      <Drawer sidebar={<div className="tree-leaf">row</div>}>
        <div>content</div>
      </Drawer>,
    );
    touch("touchstart", 0, 0);
    touch("touchend", 10, 100);
    expect(shell().classList.contains("drawer-open")).toBe(false);
  });
});