// @vitest-environment jsdom
//
// A write that fails is named, wherever it fails. `req`/`uploadReq` deliberately leave 403/404/429
// to the caller (see reportFailure) and answer a 502/503/504 with only the transient "connection
// lost" notice — so a handler with no `catch` reports nothing at all. Round 4 swept a dozen such
// call sites and missed these two: the collection editor's three siblings, in the very file it
// edited, and the one `uploadReq` caller, whose empty catch still claimed the global error modal had
// it (deep-review round 5).
import { describe, it, expect, vi, beforeAll, beforeEach, afterEach } from "vitest";
import { render, cleanup, screen, fireEvent, waitFor } from "@testing-library/react";
import { QueryClient, QueryClientProvider } from "@tanstack/react-query";

vi.mock("react-i18next", async (importOriginal) => {
  const actual = await importOriginal<typeof import("react-i18next")>();
  return {
    ...actual,
    useTranslation: () => ({ t: (key: string) => key, i18n: { language: "en" } }),
  };
});
vi.mock("./confirmContext", () => ({ useConfirm: () => async () => true }));
const { notify } = vi.hoisted(() => ({
  notify: vi.fn((_n: { level: string; title?: string; message: string }) => 0),
}));
vi.mock("../lib/notifications", async (importOriginal) => ({
  ...(await importOriginal<typeof import("../lib/notifications")>()),
  notify,
}));

import PlexCollectionEditor from "./PlexCollectionEditor";
import UploadDialog from "./UploadDialog";
import DownloadDialog from "./DownloadDialog";
import { api, HttpError } from "../lib/api";

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

// What failed, as the toast names it: the title (E11 S2b — the title says WHAT, the line under it WHY).
const errors = () =>
  notify.mock.calls.filter(([n]) => n.level === "error").map(([n]) => n.title ?? n.message);
const client = () => new QueryClient({ defaultOptions: { queries: { retry: false } } });

describe("the Plex collection editor", () => {
  const collections = [
    { id: "c1", title: "Marathon", can_edit: true, child_count: 3, smart: false },
    // Not marked "mine to edit" yet, so it offers the take-over button.
    {
      id: "c2",
      title: "Theirs",
      can_edit: false,
      child_count: 9,
      smart: false,
      source: "collection",
    },
  ];
  const mount = () =>
    render(
      <QueryClientProvider client={client()}>
        <PlexCollectionEditor
          item={{ id: "m1", title: "A Movie" }}
          library="1"
          memberOf={[]}
          onClose={() => {}}
          onChanged={() => {}}
        />
      </QueryClientProvider>,
    );

  it("says so when adding to a collection that is gone, instead of nothing happening", async () => {
    vi.spyOn(api, "plexCollections").mockResolvedValue({ collections } as never);
    vi.spyOn(api, "plexCollectionAddItem").mockRejectedValue(
      new HttpError(404, "Unknown collection"),
    );
    mount();
    fireEvent.click(await screen.findByText("Marathon"));
    await waitFor(() => expect(errors()).toEqual(["plex.collection.editFailed"]));
  });

  it("says so when enabling editing is refused", async () => {
    vi.spyOn(api, "plexCollections").mockResolvedValue({ collections } as never);
    vi.spyOn(api, "plexSetCollectionEditable").mockRejectedValue(
      new HttpError(403, "This collection is read-only"),
    );
    mount();
    fireEvent.click(await screen.findByText("plex.collEditor.makeEditable"));
    await waitFor(() => expect(errors()).toEqual(["plex.collection.editFailed"]));
  });

  it("says so when a CONFIRMED delete does not happen", async () => {
    // The worst of the three to lose: the user has just confirmed a destructive dialog.
    vi.spyOn(api, "plexCollections").mockResolvedValue({ collections } as never);
    vi.spyOn(api, "plexDeleteCollection").mockRejectedValue(
      new HttpError(404, "Unknown collection"),
    );
    mount();
    fireEvent.click(await screen.findByText("plex.collEditor.delete"));
    await waitFor(() => expect(errors()).toEqual(["plex.collection.deleteFailed"]));
  });
});

describe("the upload dialog", () => {
  const pick = () => {
    const input = document.querySelector('input[type="file"]') as HTMLInputElement;
    const file = new File(["x"], "clip.mp4", { type: "video/mp4" });
    Object.defineProperty(input, "files", { value: [file], configurable: true });
    fireEvent.change(input);
  };
  const mount = () =>
    render(
      <QueryClientProvider client={client()}>
        <UploadDialog onClose={() => {}} />
      </QueryClientProvider>,
    );

  beforeEach(() => {
    // The dialog reads the per-file cap on mount. Unstubbed it is a REAL fetch from jsdom, which
    // fails, retries once after 250 ms and then raises the "connection lost" notice — a delayed
    // toast that outlives the test that spawned it and lands as an unexpected error in whichever
    // test is running by then. The file is fast enough today that it always lands after the suite,
    // which is a coincidence, not a guarantee (deep-review round 2).
    vi.spyOn(api, "downloadUsage").mockResolvedValue({
      upload_max_bytes: 1_000_000,
    } as Awaited<ReturnType<typeof api.downloadUsage>>);
  });

  it("names an upload the server refused", async () => {
    // A 502 from the proxy raises only the self-clearing connection notice; the next successful poll
    // wipes it, and the dialog snapped back with no error and no job in the list.
    vi.spyOn(api, "uploadDownload").mockRejectedValue(new HttpError(502, "Bad Gateway"));
    mount();
    pick();
    fireEvent.click(screen.getByText("downloads.upload.submit"));
    await waitFor(() => expect(errors()).toEqual(["downloads.upload.failed"]));
  });

  it("says nothing when the user cancelled it themselves", async () => {
    // A cancel is not a failure — and it rejects with the same status 0 a genuine network drop does,
    // which is why the difference is a named sentinel (`isAborted`) and not a status check.
    const upload = vi.spyOn(api, "uploadDownload").mockRejectedValue(new HttpError(0, "aborted"));
    mount();
    pick();
    fireEvent.click(screen.getByText("downloads.upload.submit"));
    await waitFor(() => expect(upload).toHaveBeenCalled());
    expect(errors()).toEqual([]);
  });
});

describe("the download dialog", () => {
  it("names a queueing the server refused with no dialog of its own", async () => {
    // Its catch said "the global error dialog already surfaced the reason" — true for a quota 422,
    // not for a 403/404/429 or a lost connection, where the dialog just stayed open (E11 S2b).
    vi.spyOn(api, "downloadProfiles").mockResolvedValue([{ id: 1, name: "Best" }] as never);
    vi.spyOn(api, "enqueueDownload").mockRejectedValue(new HttpError(403, "nope"));
    render(
      <QueryClientProvider client={client()}>
        <DownloadDialog source="https://example.com/v" onClose={() => {}} />
      </QueryClientProvider>,
    );
    await screen.findByText("Best");
    fireEvent.click(screen.getByText("downloads.dialog.submit"));
    await waitFor(() => expect(errors()).toEqual(["errors.writeFailed.enqueueDownload"]));
  });
});