// @vitest-environment jsdom
//
// The clip panel: it opens on its In handle, every way of marking keeps a range the server takes,
// Cut sends the range (and a Plex clip's audio track) and closes, a refused Cut stays open and says
// so, and "Play selection" loops back to In. The range is the caller's state, so the test holds it.
import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
import { act, cleanup, fireEvent, render, screen, waitFor } from "@testing-library/react";
import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
import { useState } from "react";
import type { ClipRequest } from "../lib/api";
import type { ClipRange } from "../lib/clipRange";

vi.mock("react-i18next", async (importOriginal) => {
  const actual = await importOriginal<typeof import("react-i18next")>();
  return { ...actual, useTranslation: () => ({ t: (k: string) => k }) };
});

const enqueueClip = vi.fn<(body: ClipRequest) => Promise<unknown>>();
vi.mock("../lib/api", async (importOriginal) => {
  const actual = await importOriginal<typeof import("../lib/api")>();
  return { ...actual, api: { ...actual.api, enqueueClip: (b: ClipRequest) => enqueueClip(b) } };
});
const notify = vi.fn();
vi.mock("../lib/notifications", async (importOriginal) => {
  const actual = await importOriginal<typeof import("../lib/notifications")>();
  return { ...actual, notify: (n: unknown) => notify(n) };
});
const showInTray = vi.fn();
vi.mock("../lib/downloadQueue", () => ({ showInTray: (id: number) => showInTray(id) }));
const notifyActionError = vi.fn();
vi.mock("../lib/actionErrors", async (importOriginal) => {
  const actual = await importOriginal<typeof import("../lib/actionErrors")>();
  return { ...actual, notifyActionError: (e: unknown, t: string) => notifyActionError(e, t) };
});

import ClipPanel, { type ClipCrop, type ClipSource } from "./ClipPanel";

afterEach(() => {
  cleanup();
  vi.clearAllMocks();
});
beforeEach(() => {
  // A block, not an expression: a function returned from beforeEach is run as its teardown.
  enqueueClip.mockResolvedValue({ id: 1 });
});

function Harness({
  src = { source: "plex", ref: "777", audioTrack: 1 },
  start = { start: 100, end: 130 },
  current = 100,
  onClose = () => {},
  onPlayFrom = () => {},
  onSeek = () => {},
  duration = 3600,
}: {
  src?: ClipSource;
  start?: ClipRange;
  current?: number;
  onClose?: () => void;
  onPlayFrom?: (t: number) => void;
  onSeek?: (t: number, final: boolean) => void;
  duration?: number;
}) {
  const [clip, setClip] = useState(start);
  const [crop, setCrop] = useState<ClipCrop | null>(null);
  return (
    <QueryClientProvider client={new QueryClient()}>
      <output data-testid="range">{`${clip.start}-${clip.end}`}</output>
      <output data-testid="crop">{crop ? JSON.stringify(crop) : "none"}</output>
      <ClipPanel
        src={src}
        clip={clip}
        onChange={setClip}
        duration={duration}
        current={current}
        picture={16 / 9}
        crop={crop}
        onCrop={setCrop}
        onSeek={onSeek}
        onPlayFrom={onPlayFrom}
        onClose={onClose}
      />
    </QueryClientProvider>
  );
}

const range = () => screen.getByTestId("range").textContent;

describe("ClipPanel", () => {
  it("opens with the focus on its In handle, so the arrows move the mark at once", () => {
    render(<Harness />);
    const handle = screen.getByRole("slider", { name: "clip.in" });
    expect(document.activeElement).toBe(handle);
    fireEvent.keyDown(handle, { key: "ArrowLeft", shiftKey: true });
    expect(range()).toBe("99-130");
  });

  it("takes a typed time on Enter and carries the other end along past it", () => {
    render(<Harness />);
    const [inField] = screen.getAllByRole("textbox", { name: "clip.in" });
    fireEvent.change(inField!, { target: { value: "2:20" } });
    fireEvent.keyDown(inField!, { key: "Enter" });
    expect(range()).toBe("140-170");
  });

  it("keeps the focus in a time field that took a typed time on Enter", () => {
    render(<Harness />);
    const field = () => screen.getAllByRole("textbox", { name: "clip.in" })[0]!;
    field().focus();
    fireEvent.change(field(), { target: { value: "2:20" } });
    fireEvent.keyDown(field(), { key: "Enter" });
    expect(range()).toBe("140-170");
    expect(document.activeElement).toBe(field());
    expect((field() as HTMLInputElement).value).toBe("0:02:20.0");
  });

  it("shows the mark it holds, not a time it could not take", () => {
    render(<Harness start={{ start: 3500, end: 3600 }} />);
    const out = () => screen.getAllByRole("textbox", { name: "clip.out" })[0] as HTMLInputElement;
    // Past the end: clamped back to the end, and the field says so.
    fireEvent.change(out(), { target: { value: "1:15:00" } });
    fireEvent.blur(out());
    expect(range()).toBe("3500-3600");
    expect(out().value).toBe("1:00:00.0");
    expect(out().getAttribute("aria-invalid")).toBeNull();
    // Not a time at all: kept for fixing, and marked as not taken.
    fireEvent.change(out(), { target: { value: "abc" } });
    fireEvent.blur(out());
    expect(out().value).toBe("abc");
    expect(out().getAttribute("aria-invalid")).toBe("true");
    expect(range()).toBe("3500-3600");
  });

  it("says an unreadable time on a line of its own under the fields, read out, over nothing", () => {
    render(<Harness />);
    const out = () => screen.getAllByRole("textbox", { name: "clip.out" })[0] as HTMLInputElement;
    fireEvent.change(out(), { target: { value: "abc" } });
    fireEvent.blur(out());
    const line = screen.getByRole("alert");
    expect(line.textContent).toBe("common.timecodeInvalidHours");
    expect(out().getAttribute("aria-describedby")).toBe(line.id);
    // In the panel's flow, after the fields' row: it pushes the crop row down rather than lying over
    // its buttons and taking their clicks.
    expect(line.closest('[role="group"]')).toBeNull();
    expect(line.className).not.toMatch(/\babsolute\b/);
    expect(line.parentElement?.className).toMatch(/\bmedia-scope\b/);
  });

  it("takes a decimal comma, as a Hungarian hand types it", () => {
    render(<Harness />);
    const field = screen.getAllByRole("textbox", { name: "clip.in" })[0]!;
    fireEvent.change(field, { target: { value: "1:42,5" } });
    fireEvent.keyDown(field, { key: "Enter" });
    expect(range()).toBe("102.5-130");
  });

  it("never seeks the player onto the item's very end (that would finish the item)", () => {
    const onSeek = vi.fn();
    render(<Harness onSeek={onSeek} duration={600} start={{ start: 590, end: 595 }} />);
    fireEvent.keyDown(screen.getByRole("slider", { name: "clip.out" }), { key: "End" });
    expect(range()).toBe("590-600");
    const [time, final] = onSeek.mock.lastCall!;
    expect(final).toBe(true);
    expect(time).toBeLessThan(600);
    expect(time).toBeGreaterThan(599);
  });

  it("marks an end at the playhead", () => {
    render(<Harness current={115.5} />);
    fireEvent.click(screen.getByRole("button", { name: "clip.outHere" }));
    expect(range()).toBe("100-115.5");
  });

  it("cuts the range with the Plex audio track and closes", async () => {
    const onClose = vi.fn();
    render(<Harness onClose={onClose} start={{ start: 100.12345, end: 130 }} />);
    fireEvent.change(screen.getByRole("textbox", { name: "clip.name" }), {
      target: { value: "  The bit  " },
    });
    fireEvent.click(screen.getByRole("button", { name: "clip.cut" }));
    await waitFor(() => expect(onClose).toHaveBeenCalled());
    expect(enqueueClip).toHaveBeenCalledWith({
      source: "plex",
      ref: "777",
      start_s: 100.123,
      end_s: 130,
      audio_track: 1,
      display_name: "The bit",
    });
    expect(notify).toHaveBeenCalledWith(
      expect.objectContaining({ level: "success", message: "clip.queued" }),
    );
    // Its View opens the tray on the new clip.
    (
      notify.mock.calls[notify.mock.calls.length - 1]![0] as { action: { onClick: () => void } }
    ).action.onClick();
    expect(showInTray).toHaveBeenCalledWith(1);
  });

  it("sends no audio track for a YouTube clip", async () => {
    render(<Harness src={{ source: "youtube", ref: "abcdefghijk" }} />);
    fireEvent.click(screen.getByRole("button", { name: "clip.cut" }));
    await waitFor(() => expect(enqueueClip).toHaveBeenCalled());
    const body = enqueueClip.mock.calls[0]![0];
    expect(body.source).toBe("youtube");
    expect(Object.keys(body)).not.toContain("audio_track");
  });

  it("stays open and says so when the cut is refused", async () => {
    const onClose = vi.fn();
    const err = new Error("boom");
    enqueueClip.mockRejectedValue(err);
    render(<Harness onClose={onClose} />);
    fireEvent.click(screen.getByRole("button", { name: "clip.cut" }));
    await waitFor(() => expect(notifyActionError).toHaveBeenCalledTimes(1));
    expect(notifyActionError.mock.calls[0]![0]).toBe(err);
    expect(notifyActionError.mock.calls[0]![1]).toBe("clip.failed");
    expect(onClose).not.toHaveBeenCalled();
    expect((screen.getByRole("button", { name: "clip.cut" }) as HTMLButtonElement).disabled).toBe(
      false,
    );
  });

  it("loops the selection: playing past End goes back to Start", () => {
    const onPlayFrom = vi.fn();
    const { rerender } = render(<Harness onPlayFrom={onPlayFrom} current={110} />);
    fireEvent.click(screen.getByRole("button", { name: "clip.loop" }));
    expect(onPlayFrom).toHaveBeenLastCalledWith(100);
    onPlayFrom.mockClear();
    act(() => rerender(<Harness onPlayFrom={onPlayFrom} current={125} />));
    expect(onPlayFrom).not.toHaveBeenCalled();
    act(() => rerender(<Harness onPlayFrom={onPlayFrom} current={130.2} />));
    expect(onPlayFrom).toHaveBeenLastCalledWith(100);
  });

  it("cuts the whole picture until the crop is turned on, then the frame with its box's shape", async () => {
    render(<Harness />);
    expect(screen.queryByRole("group", { name: "clip.shape" })).toBeNull();
    fireEvent.click(screen.getByRole("button", { name: "clip.crop" }));
    expect(screen.getByRole("button", { name: "clip.crop" }).getAttribute("aria-pressed")).toBe(
      "true",
    );
    fireEvent.click(screen.getByRole("button", { name: "clip.cut" }));
    await waitFor(() => expect(enqueueClip).toHaveBeenCalled());
    expect(enqueueClip.mock.calls[0]![0].crop).toEqual({
      x: 0.1,
      y: 0.1,
      w: 0.8,
      h: 0.8,
      aspect: 1.7778,
    });
  });

  it("holds the frame to a shape without cutting, and goes back to the whole picture", () => {
    render(<Harness />);
    fireEvent.click(screen.getByRole("button", { name: "clip.crop" }));
    // A segmented choice inside the panel's form: never a submit.
    fireEvent.click(screen.getByRole("button", { name: "9:16" }));
    expect(enqueueClip).not.toHaveBeenCalled();
    const tall = JSON.parse(screen.getByTestId("crop").textContent!) as ClipCrop;
    expect(tall.shape).toBe("9:16");
    expect(tall.rect.h).toBeCloseTo(1, 6);
    expect((tall.rect.w * 16) / 9 / tall.rect.h).toBeCloseTo(9 / 16, 6);
    fireEvent.click(screen.getByRole("button", { name: "clip.whole" }));
    expect(JSON.parse(screen.getByTestId("crop").textContent!)).toEqual({
      rect: { x: 0, y: 0, w: 1, h: 1 },
      shape: "free",
    });
    fireEvent.click(screen.getByRole("button", { name: "clip.crop" }));
    expect(screen.getByTestId("crop").textContent).toBe("none");
  });
});