// @vitest-environment jsdom
//
// The activity page around its run and audit lists (the server-log tab has its own file): the view
// is the URL — a link narrows the runs to one job, a status chip narrows them further; a run opens
// to its log lines and an admin action to its request's, each a new history entry that Back undoes;
// the account filter reaches the quota tab; a
// failed read is an error with a retry, never an empty list.
import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
import { act, cleanup, fireEvent, render, screen, waitFor, within } from "@testing-library/react";
import { QueryClient, QueryClientProvider } from "@tanstack/react-query";

import type { AuditQuery, AuditRow, HistoryPage, LogQuery, RunQuery, RunRow } from "../lib/api";

vi.mock("react-i18next", async (importOriginal) => {
  const actual = await importOriginal<typeof import("react-i18next")>();
  return {
    ...actual,
    useTranslation: () => ({ t: (key: string) => key, i18n: { language: "en" } }),
  };
});

const runsMock = vi.fn<(q: RunQuery, before: string | null) => Promise<HistoryPage<RunRow>>>();
const auditMock = vi.fn<(q: AuditQuery, before: string | null) => Promise<HistoryPage<AuditRow>>>();
const logsMock = vi.fn<(q: LogQuery, before: string | null) => Promise<unknown>>();
const quotaMock = vi.fn<(since: string, user: string | null) => Promise<unknown>>();
const runFacetsMock = vi.fn<() => Promise<unknown>>();
const usersMock = vi.fn<() => Promise<unknown>>();
vi.mock("../lib/api", async (importOriginal) => {
  const actual = await importOriginal<typeof import("../lib/api")>();
  return {
    ...actual,
    api: {
      ...actual.api,
      adminRuns: (q: RunQuery, before: string | null) => runsMock(q, before),
      adminRunFacets: () => runFacetsMock(),
      adminAudit: (q: AuditQuery, before: string | null) => auditMock(q, before),
      adminAuditFacets: () => Promise.resolve({ actions: [] }),
      adminLogs: (q: LogQuery, before: string | null) => logsMock(q, before),
      adminLogFacets: () =>
        Promise.resolve({ levels: [], sources: [], events: [], users: [], accounts: {}, total: 0 }),
      adminUsers: () => usersMock(),
      adminQuota: (since: string, user: string | null) => quotaMock(since, user),
      clearAudit: () => Promise.resolve({ ok: true, cleared: 1 }),
    },
  };
});

import Activity from "./Activity";
import { ChoiceContext } from "./confirmContext";
import { PageToolbarSlot } from "./ui/pageToolbarSlot";

// The filter bar lives in the toolbar, which portals into the shell's band: give it one.
const slot = document.body.appendChild(document.createElement("div"));

const RUN: RunRow = {
  id: 41,
  job: "backfill",
  trigger: "manual",
  actor_id: 1,
  target: null,
  target_title: null,
  status: "error",
  started_at: "2026-10-18T02:31:04Z",
  finished_at: "2026-10-18T02:31:45Z",
  summary: null,
  result: null,
  error: "quotaExceeded",
  failure: null,
  quota_units: 212,
  log_lines: 9,
};

const ACTION: AuditRow = {
  id: 5,
  created_at: "2026-10-18T02:27:00Z",
  actor_id: 1,
  action: "scheduler_interval",
  target_type: "job",
  target_id: "rss_poll",
  summary: "rss_poll → 25 min/run",
  before: null,
  after: { interval_minutes: 25 },
  request_id: "0efdd960c9ad1977",
  log_lines: 4,
};

const page = <T,>(items: T[]): HistoryPage<T> => ({
  items,
  accounts: { "1": "admin@example.com" },
  next_cursor: null,
});

function renderPage() {
  const qc = new QueryClient({ defaultOptions: { queries: { retry: false } } });
  return render(
    <QueryClientProvider client={qc}>
      {/* Every confirmation is answered yes. */}
      <ChoiceContext.Provider value={() => Promise.resolve("confirm")}>
        <PageToolbarSlot.Provider value={slot}>
          <Activity />
        </PageToolbarSlot.Provider>
      </ChoiceContext.Provider>
    </QueryClientProvider>,
  );
}

const url = () => new URLSearchParams(window.location.search);
const rowButton = (text: RegExp) =>
  screen
    .getAllByRole("button")
    .find((b) => b.hasAttribute("aria-expanded") && text.test(b.textContent ?? ""))!;

beforeEach(() => {
  runsMock.mockResolvedValue(page([RUN]));
  auditMock.mockResolvedValue(page([ACTION]));
  logsMock.mockResolvedValue({ items: [], accounts: {}, next_cursor: null });
  quotaMock.mockResolvedValue({ rows: [], daily: [] });
  runFacetsMock.mockResolvedValue({ jobs: [], statuses: [], total: 0 });
  usersMock.mockResolvedValue([{ id: 1, email: "admin@example.com" }]);
});
afterEach(() => {
  cleanup();
  vi.clearAllMocks();
});

describe("Activity", () => {
  it("a link narrows the runs to one job, and a status chip narrows them further", async () => {
    window.history.replaceState(null, "", "/?page=activity&rjob=backfill");
    renderPage();
    await waitFor(() =>
      expect(runsMock).toHaveBeenCalledWith(
        expect.objectContaining({ job: "backfill", status: undefined, since: expect.any(String) }),
        null,
      ),
    );

    fireEvent.click(screen.getByRole("button", { name: /activity\.runs\.status\.error/ }));

    await waitFor(() =>
      expect(runsMock).toHaveBeenLastCalledWith(
        expect.objectContaining({ job: "backfill", status: "error" }),
        null,
      ),
    );
    expect([url().get("rjob"), url().get("rst")]).toEqual(["backfill", "error"]);
  });

  it("Older reads the next page from its cursor, and offers none past the last", async () => {
    window.history.replaceState(null, "", "/?page=activity");
    runsMock.mockImplementation((_q, before) =>
      Promise.resolve(
        before === null
          ? { ...page([RUN]), next_cursor: "c1" }
          : page([{ ...RUN, id: 40, error: "the older one" }]),
      ),
    );
    renderPage();
    fireEvent.click(await screen.findByRole("button", { name: "activity.older" }));
    await waitFor(() => expect(screen.getByText("the older one")).toBeTruthy());
    expect(runsMock).toHaveBeenLastCalledWith(expect.anything(), "c1");
    expect(screen.getByText("quotaExceeded")).toBeTruthy();
    expect(screen.queryByRole("button", { name: "activity.older" })).toBeNull();
  });

  it("an older page that fails says so and keeps what was loaded", async () => {
    window.history.replaceState(null, "", "/?page=activity");
    runsMock.mockImplementation((_q, before) =>
      before === null
        ? Promise.resolve({ ...page([RUN]), next_cursor: "c1" })
        : Promise.reject(new Error("500")),
    );
    renderPage();
    fireEvent.click(await screen.findByRole("button", { name: "activity.older" }));
    const alert = await screen.findByRole("alert");
    expect(alert.textContent).toContain("activity.olderFailed");
    expect(screen.getByText("quotaExceeded")).toBeTruthy();
  });

  it("offers no older page while a filter change is still loading", async () => {
    window.history.replaceState(null, "", "/?page=activity");
    // The cursor on screen is the previous filter's: it would continue the wrong list.
    runsMock.mockImplementation((q) =>
      q.status ? new Promise(() => {}) : Promise.resolve({ ...page([RUN]), next_cursor: "c1" }),
    );
    renderPage();
    await screen.findByRole("button", { name: "activity.older" });
    fireEvent.click(screen.getByRole("button", { name: /activity\.runs\.status\.error/ }));
    await waitFor(() =>
      expect(screen.queryByRole("button", { name: "activity.older" })).toBeNull(),
    );
    expect(screen.getByText("quotaExceeded")).toBeTruthy(); // the old rows stay, dimmed
  });

  it("a run opens to its log lines, and Back returns to the runs", async () => {
    window.history.replaceState({ sfPage: "activity" }, "", "/?page=activity&aw=24h&aq=quota");
    renderPage();
    await waitFor(() => expect(screen.getByText("quotaExceeded")).toBeTruthy());
    fireEvent.click(rowButton(/quotaExceeded/));
    fireEvent.click(screen.getByRole("button", { name: "activity.runs.logLines" }));

    await waitFor(() =>
      expect(logsMock).toHaveBeenLastCalledWith(
        expect.objectContaining({ run_id: 41, q: undefined }),
        null,
      ),
    );
    // Every other filter is off, and the range is the log's whole retention.
    expect([url().get("at"), url().get("lrun"), url().get("aw"), url().get("aq")]).toEqual([
      "logs",
      "41",
      "90d",
      null,
    ]);

    await act(async () => {
      const landed = new Promise((resolve) =>
        window.addEventListener("popstate", resolve, { once: true }),
      );
      window.history.back();
      await landed;
    });
    await waitFor(() => expect(url().get("at")).toBeNull());
    expect([url().get("aw"), url().get("aq"), url().get("lrun")]).toEqual(["24h", "quota", null]);
    expect(screen.getByText("quotaExceeded")).toBeTruthy();
  });

  it("a run's outcome is its result in the reader's words, its failure in the danger colour", async () => {
    runsMock.mockResolvedValue(
      page<RunRow>([
        { ...RUN, id: 1, status: "ok", error: null, result: { new: 3 }, summary: "new=3" },
        // Moved over from the audit log before the result rode along as data: the one-liner only.
        { ...RUN, id: 2, status: "ok", error: null, result: null, summary: "failed=2" },
        { ...RUN, id: 3, status: "interrupted", error: null },
        { ...RUN, id: 4 },
      ]),
    );
    renderPage();
    await waitFor(() => expect(screen.getByText("scheduler.result.new: 3")).toBeTruthy());
    expect(screen.queryByText("new=3")).toBeNull();
    expect(screen.getByText("scheduler.result.failed: 2")).toBeTruthy();
    expect(screen.getByText("scheduler.interrupted").className).toContain("text-warn");
    expect(screen.getByText("quotaExceeded").className).toContain("text-danger");
  });

  it("filter choices that failed to load say so beside the filters, with a retry", async () => {
    runFacetsMock.mockRejectedValueOnce(new Error("500"));
    usersMock.mockRejectedValueOnce(new Error("500"));
    renderPage();
    await waitFor(() =>
      expect(screen.getAllByRole("alert").map((a) => a.textContent)).toEqual([
        expect.stringContaining("activity.accountsFailed"),
        expect.stringContaining("activity.filtersFailed"),
      ]),
    );
    for (const retry of screen.getAllByRole("button", { name: "common.retry" }))
      fireEvent.click(retry);
    await waitFor(() => expect(screen.queryAllByRole("alert")).toEqual([]));
    expect(runFacetsMock).toHaveBeenCalledTimes(2);
    expect(usersMock).toHaveBeenCalledTimes(2);
  });

  it("clearing the admin actions reads the list again", async () => {
    window.history.replaceState(null, "", "/?page=activity&at=admin");
    renderPage();
    await waitFor(() => expect(screen.getByText("auditActions.scheduler_interval")).toBeTruthy());
    auditMock.mockResolvedValue(page<AuditRow>([]));
    fireEvent.click(screen.getByRole("button", { name: "audit.clear" }));
    await waitFor(() => expect(screen.getByText("audit.empty")).toBeTruthy());
    // An emptied list is announced, as the error and loading states are.
    expect(screen.getByText("audit.empty").closest('[role="status"]')).toBeTruthy();
  });

  it("closing a dialog over the server log leaves Live on", async () => {
    window.history.replaceState(null, "", "/?page=activity&at=logs");
    renderPage();
    const live = await screen.findByRole("button", { name: "adminLogs.live" });
    fireEvent.click(live);
    expect(live.getAttribute("aria-pressed")).toBe("true");
    // A closing dialog steps back over its own history entry: a popstate onto the same address.
    act(() => {
      window.dispatchEvent(new PopStateEvent("popstate"));
    });
    const after = screen.getByRole("button", { name: "adminLogs.live" });
    expect(after.getAttribute("aria-pressed")).toBe("true");
    expect(after).toBe(live); // the same log, not a fresh one
  });

  it("an action whose request's lines are gone says so instead of linking to an empty list", async () => {
    auditMock.mockResolvedValue(page([{ ...ACTION, log_lines: 0 }]));
    window.history.replaceState(null, "", "/?page=activity&at=admin");
    renderPage();
    await waitFor(() => expect(screen.getByText("auditActions.scheduler_interval")).toBeTruthy());
    fireEvent.click(rowButton(/scheduler_interval/));
    expect(screen.getByText("activity.audit.noRequestLines")).toBeTruthy();
    expect(screen.queryByRole("button", { name: "activity.audit.requestLines" })).toBeNull();
  });

  it("the admin tab lists the actions, and an action opens its request's lines", async () => {
    window.history.replaceState(null, "", "/?page=activity&at=admin");
    renderPage();
    await waitFor(() => expect(screen.getByText("auditActions.scheduler_interval")).toBeTruthy());
    expect(runsMock).not.toHaveBeenCalled();

    fireEvent.click(rowButton(/auditActions\.scheduler_interval/));
    fireEvent.click(screen.getByRole("button", { name: "activity.audit.requestLines" }));

    await waitFor(() =>
      expect(logsMock).toHaveBeenLastCalledWith(
        expect.objectContaining({ request_id: "0efdd960c9ad1977" }),
        null,
      ),
    );
    expect(url().get("lreq")).toBe("0efdd960c9ad1977");
  });

  it("the account filter reaches the quota tab, over the page's range", async () => {
    window.history.replaceState(null, "", "/?page=activity&at=quota&au=none&aw=30d");
    renderPage();
    await waitFor(() => expect(quotaMock).toHaveBeenCalled());
    const [since, user] = quotaMock.mock.calls[0]!;
    expect(user).toBe("none");
    const days = (Date.now() - new Date(since).getTime()) / 86_400_000;
    expect(Math.round(days)).toBe(30);
  });

  it("each day's spend is readable without a pointer", async () => {
    window.history.replaceState(null, "", "/?page=activity&at=quota");
    quotaMock.mockResolvedValue({
      rows: [{ user_id: null, email: "System", total: 9, by_action: {} }],
      daily: [
        { day: "2026-10-16", total: 4 },
        { day: "2026-10-17", total: 5 },
      ],
    });
    renderPage();
    const chart = await screen.findByRole("list", { name: "activity.quota.daily" });
    expect(
      within(chart)
        .getAllByRole("listitem")
        .map((d) => d.textContent),
    ).toEqual(["stats.dailyTooltip", "stats.dailyTooltip"]);
  });

  // The runs moved over from the audit log kept one instant for start and end: their length is
  // unknown, and a "1 sec" would be invented.
  it("a run whose start and end are one instant has no length", async () => {
    window.history.replaceState(null, "", "/?page=activity");
    runsMock.mockResolvedValue(
      page([
        { ...RUN, id: 1, status: "ok", error: null, finished_at: RUN.started_at, summary: "moved" },
        { ...RUN, id: 2, status: "ok", error: null, summary: "timed" },
      ]),
    );
    renderPage();
    await waitFor(() => expect(screen.getByText("moved")).toBeTruthy());
    const cells = (text: string) =>
      [...rowButton(new RegExp(text)).children].map((c) => c.textContent);
    expect(cells("moved")).toContain("—");
    expect(cells("timed")).not.toContain("—");
  });

  // A bare "212" in a row reads as nothing in particular: the spend carries its unit, and a run that
  // spent none says nothing rather than "0".
  it("a run's quota spend reads with its unit, and none spent leaves the cell blank", async () => {
    window.history.replaceState(null, "", "/?page=activity");
    runsMock.mockResolvedValue(
      page([
        { ...RUN, id: 1, status: "ok", error: null, summary: "spent" },
        { ...RUN, id: 2, status: "ok", error: null, summary: "free", quota_units: 0 },
      ]),
    );
    renderPage();
    await waitFor(() => expect(screen.getByText("spent")).toBeTruthy());
    const cells = (text: string) =>
      [...rowButton(new RegExp(text)).children].map((c) => c.textContent);
    expect(cells("spent")).toContain("activity.runs.units");
    expect(cells("spent")).not.toContain("212");
    expect(cells("free")).not.toContain("0");
    expect(cells("free")).not.toContain("activity.runs.units");
  });

  // Most runs store no line at all: a link there would only lead to an empty list.
  it("a run that logged nothing says so instead of linking to an empty list", async () => {
    window.history.replaceState(null, "", "/?page=activity");
    runsMock.mockResolvedValue(page([{ ...RUN, log_lines: 0 }]));
    renderPage();
    await waitFor(() => expect(screen.getByText("quotaExceeded")).toBeTruthy());
    fireEvent.click(rowButton(/quotaExceeded/));
    expect(screen.getByText("activity.runs.noLogLines")).toBeTruthy();
    expect(screen.queryByRole("button", { name: "activity.runs.logLines" })).toBeNull();
  });

  it("a failed read is an error with a retry, not an empty list", async () => {
    window.history.replaceState(null, "", "/?page=activity");
    runsMock.mockRejectedValue(new Error("502"));
    renderPage();

    expect(await screen.findByRole("alert")).toBeTruthy();
    expect(screen.queryByText("activity.runs.empty")).toBeNull();
  });
});