// @vitest-environment jsdom
//
// A split export that fails part-way. Every clip is its own job,
// committed as it goes, so a failure at clip 2 of 2 (the job cap) left clip 1 queued while the editor
// reported a plain failure and kept both selected — and trying again queued clip 1 a second time. It
// now says how many made it (also when `req` has already shown the refusal in its dialog), deselects
// them, holds the cut list still while it queues, and a retry goes on with the same "(i/N)" series.
import { describe, it, expect, vi, beforeAll, afterEach } from "vitest";
import { render, screen, fireEvent, waitFor, cleanup, act, within } from "@testing-library/react";
import { QueryClient, QueryClientProvider } from "@tanstack/react-query";

vi.mock("react-i18next", async (importOriginal) => ({
  ...(await importOriginal<typeof import("react-i18next")>()),
  useTranslation: () => ({ t: (key: string) => key, i18n: { language: "en" } }),
}));
const { notify } = vi.hoisted(() => ({ notify: vi.fn() }));
vi.mock("../lib/notifications", async (importOriginal) => ({
  ...(await importOriginal<typeof import("../lib/notifications")>()),
  notify,
}));

import VideoEditor from "./VideoEditor";
import { api, HttpError, type DownloadJob } from "../lib/api";
import { markReported } from "../lib/api/core";

beforeAll(() => {
  class Stub {
    observe() {}
    unobserve() {}
    disconnect() {}
    takeRecords() {
      return [];
    }
  }
  globalThis.ResizeObserver ??= Stub as unknown as typeof ResizeObserver;
  globalThis.IntersectionObserver ??= Stub as unknown as typeof IntersectionObserver;
});
afterEach(() => {
  cleanup();
  vi.restoreAllMocks();
  notify.mockReset();
});

const job = {
  id: 7,
  display_name: "Talk",
  asset: { duration_s: 100, width: 1920, height: 1080, title: "Talk" },
} as unknown as DownloadJob;

describe("VideoEditor — a split export that fails part-way", () => {
  it("says how many clips made it, and a retry queues only the rest", async () => {
    vi.spyOn(api, "downloadStoryboard").mockResolvedValue({ available: false } as never);
    let refuse: (e: unknown) => void = () => {};
    const enqueue = vi
      .spyOn(api, "enqueueEdit")
      .mockResolvedValueOnce({} as never)
      .mockImplementationOnce(
        () =>
          new Promise((_, reject) => {
            refuse = reject;
          }) as never,
      )
      .mockResolvedValue({} as never);
    render(
      <QueryClientProvider client={new QueryClient()}>
        <VideoEditor job={job} onClose={() => {}} />
      </QueryClientProvider>,
    );

    // The playhead is where the video element says it is.
    const video = document.querySelector("video")!;
    const playhead = (s: number) => {
      Object.defineProperty(video, "currentTime", { value: s, configurable: true, writable: true });
      fireEvent.timeUpdate(video);
    };
    playhead(50);
    fireEvent.click(screen.getByText("editor.splitHere"));

    fireEvent.click(screen.getByText("editor.createN"));
    await waitFor(() => expect(enqueue).toHaveBeenCalledTimes(2));
    // While the clips are queued the cut list holds still: a split now would be a range never queued.
    playhead(75);
    fireEvent.click(screen.getByText("editor.splitHere"));

    // The job cap, as `req` delivers it: already shown in the error dialog, and marked reported.
    const refused = new HttpError(422, "errors.generic", { code: "quota" });
    markReported(refused);
    await act(async () => refuse(refused));
    await waitFor(() =>
      expect(notify).toHaveBeenCalledWith(
        expect.objectContaining({ level: "error", title: "editor.partlyCreated" }),
      ),
    );
    expect(enqueue.mock.calls[0]![0].display_name).toBe("Talk (1/2)");

    // The queued first clip is deselected: one clip left to create, and only it is sent again — as
    // the second of the same two.
    fireEvent.click(screen.getByText("editor.create"));
    await waitFor(() => expect(enqueue).toHaveBeenCalledTimes(3));
    expect(enqueue.mock.calls[2]![0].edit_spec.trim).toEqual({ start_s: 50, end_s: 100 });
    expect(enqueue.mock.calls[2]![0].display_name).toBe("Talk (2/2)");
  });
});

// A time typed into the selected segment's field belongs to that segment: selecting another one
// drops it, and never commits it to the new selection's cut.
describe("VideoEditor — a typed time and another segment", () => {
  it("does not move the newly selected segment's cut with a time typed for the old one", () => {
    vi.spyOn(api, "downloadStoryboard").mockResolvedValue({ available: false } as never);
    render(
      <QueryClientProvider client={new QueryClient()}>
        <VideoEditor job={job} onClose={() => {}} />
      </QueryClientProvider>,
    );
    const video = document.querySelector("video")!;
    for (const at of [30, 60]) {
      Object.defineProperty(video, "currentTime", {
        value: at,
        configurable: true,
        writable: true,
      });
      fireEvent.timeUpdate(video);
      fireEvent.click(screen.getByText("editor.splitHere"));
    }
    const segs = () => screen.getAllByTitle("editor.keptSeg");
    fireEvent.pointerDown(segs()[1]!);
    const inField = screen.getByRole("textbox", { name: "editor.in" });
    act(() => inField.focus());
    fireEvent.change(inField, { target: { value: "0:40" } });
    // Another segment is selected before the field loses the focus (a press on it).
    fireEvent.pointerDown(segs()[2]!);
    fireEvent.blur(inField);
    const cuts = screen
      .getAllByRole("slider", { name: "editor.cutN" })
      .map((c) => c.getAttribute("aria-valuenow"));
    expect(cuts).toEqual(["30", "60"]);
  });
});

// An unreadable time is said on a line under the segment's row: outside the field's label, so the
// field's name stays "Out" and the line is read once, as its description.
describe("VideoEditor — an unreadable time", () => {
  it("is said under the row, outside the field's label", () => {
    vi.spyOn(api, "downloadStoryboard").mockResolvedValue({ available: false } as never);
    render(
      <QueryClientProvider client={new QueryClient()}>
        <VideoEditor job={job} onClose={() => {}} />
      </QueryClientProvider>,
    );
    const video = document.querySelector("video")!;
    Object.defineProperty(video, "currentTime", { value: 50, configurable: true, writable: true });
    fireEvent.timeUpdate(video);
    fireEvent.click(screen.getByText("editor.splitHere"));
    fireEvent.pointerDown(screen.getAllByTitle("editor.keptSeg")[0]!);
    const out = screen.getByRole("textbox", { name: "editor.out" });
    fireEvent.change(out, { target: { value: "abc" } });
    fireEvent.keyDown(out, { key: "Enter" });
    const line = screen.getByRole("alert");
    expect(line.textContent).toBe("common.timecodeInvalid");
    expect(line.closest("label")).toBeNull();
    expect(screen.getByRole("textbox", { name: "editor.out" })).toBe(out);
    expect(out.getAttribute("aria-describedby")).toBe(line.id);
  });
});

// The cuts sit on the shared time track: each is a slider the keyboard steps, and a step stops a
// tenth short of the next cut, so no segment ever closes up.
describe("VideoEditor — a cut on the keyboard", () => {
  it("steps a focused cut with the arrows and stops it before its neighbours", () => {
    vi.spyOn(api, "downloadStoryboard").mockResolvedValue({ available: false } as never);
    render(
      <QueryClientProvider client={new QueryClient()}>
        <VideoEditor job={job} onClose={() => {}} />
      </QueryClientProvider>,
    );
    const video = document.querySelector("video")!;
    Object.defineProperty(video, "currentTime", { value: 50, configurable: true, writable: true });
    fireEvent.timeUpdate(video);
    fireEvent.click(screen.getByText("editor.splitHere"));
    const cut = screen.getByRole("slider", { name: "editor.cutN" });
    expect(cut.getAttribute("aria-valuenow")).toBe("50");
    fireEvent.keyDown(cut, { key: "ArrowRight", shiftKey: true });
    expect(cut.getAttribute("aria-valuenow")).toBe("51");
    fireEvent.keyDown(cut, { key: "End" });
    expect(cut.getAttribute("aria-valuenow")).toBe("99.9");
  });
});

// A cut's remove button and the keep toggle of the segment after it: the button is a button a click
// or a key works (it sat inside the cut's slider, pointer-only, its arrows moving the cut), and it
// sits at the cut's foot, clear of the toggle at the segment's head; the toggle sits over the cut's
// hit area that reaches into its segment, so a press on it is the toggle's.
describe("VideoEditor — a cut's remove button", () => {
  const split = () => {
    vi.spyOn(api, "downloadStoryboard").mockResolvedValue({ available: false } as never);
    render(
      <QueryClientProvider client={new QueryClient()}>
        <VideoEditor job={job} onClose={() => {}} />
      </QueryClientProvider>,
    );
    const video = document.querySelector("video")!;
    Object.defineProperty(video, "currentTime", { value: 50, configurable: true, writable: true });
    fireEvent.timeUpdate(video);
    fireEvent.click(screen.getByText("editor.splitHere"));
  };

  it("removes the cut on a click (Enter on a focused button is one), and is not part of the slider", () => {
    split();
    const remove = screen.getByRole("button", { name: "editor.removeCut" });
    expect(screen.getByRole("slider", { name: "editor.cutN" }).contains(remove)).toBe(false);
    act(() => remove.focus());
    fireEvent.click(remove);
    expect(screen.queryByRole("slider", { name: "editor.cutN" })).toBeNull();
  });

  it("hands the focus on to a cut beside it, or to Split here, never to <body>", async () => {
    split();
    const video = document.querySelector("video")!;
    Object.defineProperty(video, "currentTime", { value: 70, configurable: true, writable: true });
    fireEvent.timeUpdate(video);
    fireEvent.click(screen.getByText("editor.splitHere"));
    const [second] = screen.getAllByRole("button", { name: "editor.removeCut" }).slice(1);
    act(() => second!.focus());
    fireEvent.click(second!);
    await waitFor(() =>
      expect(document.activeElement).toBe(screen.getByRole("slider", { name: "editor.cutN" })),
    );
    const last = screen.getByRole("button", { name: "editor.removeCut" });
    act(() => last.focus());
    fireEvent.click(last);
    await waitFor(() =>
      expect(document.activeElement).toBe(screen.getByText("editor.splitHere").closest("button")),
    );
  });

  it("a remove refused while the clips are queued leaves no focus to take later", async () => {
    let refuse: (e: unknown) => void = () => {};
    vi.spyOn(api, "enqueueEdit").mockImplementation(
      () =>
        new Promise((_, reject) => {
          refuse = reject;
        }) as never,
    );
    split();
    fireEvent.click(screen.getByText("editor.createN"));
    await waitFor(() => expect(api.enqueueEdit).toHaveBeenCalled());
    // The cut list holds still while the clips are queued: the remove is refused.
    const remove = screen.getByRole("button", { name: "editor.removeCut" });
    act(() => remove.focus());
    fireEvent.click(remove);
    expect(screen.getByRole("slider", { name: "editor.cutN" })).toBeTruthy();
    await act(async () => refuse(new Error("refused")));
    // The create failed and the editor stays; a later split keeps the focus where it was.
    const video = document.querySelector("video")!;
    Object.defineProperty(video, "currentTime", { value: 70, configurable: true, writable: true });
    fireEvent.timeUpdate(video);
    const splitButton = screen.getByText("editor.splitHere").closest("button")!;
    act(() => splitButton.focus());
    fireEvent.click(splitButton);
    expect(screen.getAllByRole("slider", { name: "editor.cutN" })).toHaveLength(2);
    expect(document.activeElement).toBe(splitButton);
  });

  it("sits under the track at its cut, off the cut's grab area; the keep toggle sits over it", () => {
    split();
    const remove = screen.getByRole("button", { name: "editor.removeCut" });
    const track = screen.getByRole("group", { name: "editor.timeline" });
    // A press anywhere on the cut drags it; the X that deletes it (no undo) is below the track.
    expect(track.contains(remove)).toBe(false);
    const cut = screen.getByRole("slider", { name: "editor.cutN" });
    expect(remove.closest<HTMLElement>("[style]")?.style.left).toBe(cut.style.left);
    const toggles = within(track).getAllByRole("button", { pressed: true });
    for (const toggle of toggles) expect(toggle.className).toMatch(/\bz-menu\b/);
  });
});