/**
 * @file SettingsHub.test.tsx
 * @description The Settings page shell: a path picks its section, `/settings`
 * and the legacy `?tool=` / `#ai-tools` links redirect to the path form, an
 * unknown section falls back to General, a disabled tool has no page while an
 * installed, enabled catalog tool gets one, the mobile
 * select navigates, and the search filters the nav, opens the first match on
 * Enter, clears on Escape and is focused by Ctrl+F (a second press selects its
 * text), its result list deep-links a row's sub-tab, an anchor in the URL is
 * highlighted, Pricing sits in its own Cost group, and an unknown section toasts.
 * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
 */

import { beforeEach, describe, expect, it, vi } from "vitest";
import { fireEvent, render, screen, within } from "@testing-library/react";
import userEvent from "@testing-library/user-event";
import { MemoryRouter, Route, Routes, useLocation } from "react-router-dom";
import type { AiTool, AiToolsView } from "../../lib/api";

vi.mock("../Settings", () => ({
  Settings: ({ section }: { section: string }) => (
    <div data-testid={`settings-${section}`} data-settings-anchor={`${section}-row`} />
  ),
}));
vi.mock("../../components/settings/PetSettings", () => ({
  PetSettings: () => <div data-testid="pet-settings" />,
}));
vi.mock("../CcConfig", () => ({ CcConfig: () => <div data-testid="cc-config" /> }));
vi.mock("../CodexConfig", () => ({ CodexConfig: () => <div data-testid="codex-config" /> }));
vi.mock("../AiToolConfig", () => ({
  AiToolConfig: ({ toolId }: { toolId: string }) => <div data-testid={`tool-${toolId}`} />,
}));
vi.mock("../AiRouterConfig", () => ({ AiRouterConfig: () => null }));
vi.mock("../GitCredentialsConfig", () => ({ GitCredentialsConfig: () => null }));
vi.mock("../../components/settings/AiToolsSettings", () => ({
  AiToolsSettings: () => <div data-testid="ai-tools" />,
}));
vi.mock("../../components/settings/PricingSettings", () => ({
  PricingSettings: ({ vendor }: { vendor: string }) => <div data-testid={`pricing-${vendor}`} />,
}));

const tool = (id: string, over: Partial<AiTool> = {}) =>
  ({
    id,
    label: id[0]!.toUpperCase() + id.slice(1),
    installed: true,
    enabled: true,
    launcher: null,
    ...over,
  }) as AiTool;
let view: AiToolsView;

vi.mock("../../lib/api", async (importOriginal) => {
  const actual = await importOriginal<Record<string, unknown>>();
  return {
    ...actual,
    api: {
      aiTools: { list: vi.fn(async () => view), iconUrl: () => "" },
      lanes: { list: vi.fn(async () => ({ lanes: [], counts: {} })) },
    },
  };
});

import { SettingsHub, backDelta } from "../SettingsHub";
import { __resetAiTools } from "../../hooks/useAiTools";
import { subscribeToasts, type ToastItem } from "../../lib/toast";

function Where() {
  const loc = useLocation();
  return <span data-testid="where">{loc.pathname + loc.search}</span>;
}

function renderAt(at: string) {
  return render(
    <MemoryRouter initialEntries={[at]}>
      <Routes>
        <Route
          path="/settings/*"
          element={
            <>
              <SettingsHub />
              <Where />
            </>
          }
        />
      </Routes>
    </MemoryRouter>
  );
}

const nav = () => screen.getByRole("navigation", { name: "Settings sections" });

beforeEach(() => {
  __resetAiTools();
  view = {
    default: "claude",
    tools: [
      tool("claude", { launcher: "claude" }),
      tool("codex", { launcher: "codex" }),
      tool("gemini"),
      tool("qwen", { enabled: false }),
      tool("aider", { installed: false }),
    ],
  };
});

describe("SettingsHub", () => {
  it("renders the section its path names, marked current in the nav", async () => {
    renderAt("/settings/appearance");
    expect(
      await screen.findByRole("heading", { level: 1, name: "Appearance" })
    ).toBeInTheDocument();
    expect(within(nav()).getByRole("link", { name: "Appearance" })).toHaveAttribute(
      "aria-current",
      "page"
    );
  });

  it.each([
    ["/settings", "/settings/appearance"],
    ["/settings/general", "/settings/appearance"],
    ["/settings/pet", "/settings/appearance"],
    ["/settings?tool=codex", "/settings/agents/codex"],
    ["/settings?tool=claude-code", "/settings/agents/claude-code"],
    ["/settings?tool=gemini", "/settings/agents/gemini"],
    ["/settings#ai-tools", "/settings/agents"],
  ])("redirects %s to %s", async (from, to) => {
    renderAt(from);
    await screen.findByRole("heading", { level: 1 });
    expect(screen.getByTestId("where").textContent).toBe(to);
  });

  it("sends an unknown section to Appearance once the lists have loaded", async () => {
    renderAt("/settings/nope");
    expect(
      await screen.findByRole("heading", { level: 1, name: "Appearance" })
    ).toBeInTheDocument();
    expect(screen.getByTestId("where").textContent).toBe("/settings/appearance");
  });

  it("hides a disabled tool's page and gives an installed, enabled catalog tool one", async () => {
    view.tools[1] = tool("codex", { launcher: "codex", enabled: false });
    renderAt("/settings/agents/gemini");
    expect(await screen.findByTestId("tool-gemini")).toBeInTheDocument();
    const links = within(nav())
      .getAllByRole("link")
      .map((a) => a.textContent);
    expect(links).toContain("Claude Code");
    expect(links).not.toContain("Codex");
    expect(links).not.toContain("Qwen");
    expect(links).not.toContain("Aider");
  });

  it("navigates from the mobile select", async () => {
    renderAt("/settings/data");
    await screen.findByTestId("settings-data");
    fireEvent.change(screen.getByRole("combobox", { name: "Settings sections" }), {
      target: { value: "pricing" },
    });
    expect(screen.getByTestId("where").textContent).toBe("/settings/pricing");
    expect(screen.getByTestId("pricing-openai")).toBeInTheDocument();
  });

  it("filters the nav by search, opens the first match on Enter and clears on Escape", async () => {
    const user = userEvent.setup();
    renderAt("/settings/data");
    await screen.findByTestId("settings-data");
    const box = screen.getByRole("searchbox", { name: "Search settings" });
    await user.type(box, "pricing");
    const links = within(nav())
      .getAllByRole("link")
      .map((a) => a.textContent);
    expect(links).toEqual(["Claude Code", "Codex", "Pricing"]);
    expect(within(nav()).getByRole("link", { name: "Pricing" })).toHaveAttribute(
      "data-first-match",
      "true"
    );
    await user.keyboard("{Enter}");
    expect(screen.getByTestId("where").textContent).toBe("/settings/pricing");
    await user.keyboard("{Escape}");
    expect(box).toHaveValue("");
    expect(within(nav()).getAllByRole("link").length).toBeGreaterThan(3);
  });

  it("says when nothing matches, and Ctrl+F focuses the search", async () => {
    const user = userEvent.setup();
    renderAt("/settings/data");
    await screen.findByTestId("settings-data");
    fireEvent.keyDown(window, { key: "f", ctrlKey: true });
    const box = screen.getByRole("searchbox", { name: "Search settings" });
    expect(box).toHaveFocus();
    await user.type(box, "zzzz");
    expect(within(nav()).getByText("No setting matches “zzzz”.")).toBeInTheDocument();
  });

  it("Ctrl+F leaves the search alone while a modal dialog is open", async () => {
    renderAt("/settings/data");
    await screen.findByTestId("settings-data");
    const dialog = document.createElement("div");
    dialog.setAttribute("role", "dialog");
    dialog.setAttribute("aria-modal", "true");
    const field = document.createElement("input");
    dialog.appendChild(field);
    document.body.appendChild(dialog);
    field.focus();
    const ev = fireEvent.keyDown(window, { key: "f", ctrlKey: true });
    expect(ev).toBe(true); // not prevented
    expect(field).toHaveFocus();
    dialog.remove();
  });

  it("a second Ctrl+F with the search focused selects its text instead of reaching the browser", async () => {
    const user = userEvent.setup();
    renderAt("/settings/data");
    await screen.findByTestId("settings-data");
    const box = screen.getByRole<HTMLInputElement>("searchbox", { name: "Search settings" });
    fireEvent.keyDown(window, { key: "f", ctrlKey: true });
    await user.type(box, "pet");
    const second = fireEvent.keyDown(window, { key: "f", ctrlKey: true });
    expect(second).toBe(false); // default prevented
    expect(box).toHaveFocus();
    expect([box.selectionStart, box.selectionEnd]).toEqual([0, 3]);
  });

  it("lists matching rows and deep-links a Claude Code sub-tab", async () => {
    const user = userEvent.setup();
    renderAt("/settings/data");
    await screen.findByTestId("settings-data");
    await user.type(screen.getByRole("searchbox", { name: "Search settings" }), "marketplaces");
    const list = screen.getByRole("list", { name: "Search results" });
    await user.click(within(list).getAllByRole("link")[0]!);
    expect(screen.getByTestId("where").textContent).toBe(
      "/settings/agents/claude-code?tab=marketplaces"
    );
  });

  it("puts Pricing in its own Cost group and folds language and pet into Appearance", async () => {
    renderAt("/settings/data");
    expect(await screen.findByTestId("settings-data")).toBeInTheDocument();
    expect(within(nav()).getByText("Cost")).toBeInTheDocument();
    const links = within(nav())
      .getAllByRole("link")
      .map((a) => a.textContent);
    expect(links.slice(0, 3)).toEqual(["Data", "About", "Appearance"]);
    expect(links).not.toContain("General");
    expect(links).not.toContain("Pet");
  });

  it("scrolls to and highlights the anchor the URL names", async () => {
    renderAt("/settings/data#data-row");
    const row = await screen.findByTestId("settings-data");
    await vi.waitFor(() => expect(row.className).toContain("ring-2"));
  });

  it("a malformed #anchor is ignored instead of crashing the page", async () => {
    renderAt("/settings/data#%E0%A4");
    expect(await screen.findByTestId("settings-data")).toBeInTheDocument();
  });

  it("Back always goes back: one step past the entry, at least one step", () => {
    // Entered at index 2, now two pages further on: back to index 1.
    expect(backDelta(4, 2)).toBe(-3);
    expect(backDelta(2, 2)).toBe(-1);
    // Browser Back moved below the entry with the hub still mounted: one step,
    // never history.go(0) (a reload) or a step forward.
    expect(backDelta(1, 2)).toBe(-1);
    expect(backDelta(0, 2)).toBe(-1);
  });

  it("toasts when an unknown section falls back to Appearance", async () => {
    let seen: ToastItem[] = [];
    const off = subscribeToasts((i) => (seen = i));
    renderAt("/settings/nope");
    await screen.findByTestId("pet-settings");
    expect(seen.some((x) => x.message.includes("nope"))).toBe(true);
    off();
  });
});