/**
 * @file ClaudeAgentHubSettings.test.tsx
 * @description Settings → Claude Code → AgentHub: the pricing table, the hook
 * status with Reinstall, and CLAUDE_HOME — the three sections moved out of
 * Settings → Dashboard (#40 part B) — still load and act as they did there.
 * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
 */

import { render, screen, waitFor, within } from "@testing-library/react";
import userEvent from "@testing-library/user-event";
import { beforeEach, describe, expect, it, vi } from "vitest";
import i18n from "i18next";
import { ClaudeAgentHubSettings } from "../ClaudeAgentHubSettings";
import { api } from "../../../lib/api";
import type { ModelPricing } from "../../../lib/types";
import { settleConfirm, subscribeConfirm } from "../../../lib/confirm";

/** Say yes to every confirm (a CLAUDE_HOME change now asks first). */
function confirmYes() {
  return subscribeConfirm((p) => p && queueMicrotask(() => settleConfirm(true)));
}

vi.mock("../../../lib/api", async (importOriginal) => {
  const actual = await importOriginal<Record<string, unknown>>();
  return {
    ...actual,
    api: {
      pricing: { list: vi.fn(), upsert: vi.fn(), delete: vi.fn() },
      settings: {
        info: vi.fn(),
        reinstallHooks: vi.fn(),
        resetPricing: vi.fn(),
        claudeHome: { get: vi.fn(), set: vi.fn() },
      },
    },
  };
});

const RULE = {
  model_pattern: "claude-opus-5-5%",
  display_name: "Claude Opus 5.5",
  input_per_mtok: 4,
  output_per_mtok: 20,
  cache_read_per_mtok: 0.2,
  cache_write_per_mtok: 5,
  cache_write_1h_per_mtok: 8,
  fast_input_per_mtok: 8,
  fast_output_per_mtok: 40,
  updated_at: "2026-09-28 10:00:00",
} as ModelPricing;

beforeEach(() => {
  i18n.changeLanguage("en");
  vi.mocked(api.pricing.list)
    .mockReset()
    .mockResolvedValue({ pricing: [RULE] });
  vi.mocked(api.settings.info)
    .mockReset()
    .mockResolvedValue({
      hooks: {
        installed: true,
        path: "/home/u/.claude/settings.json",
        hooks: { SessionStart: true, Stop: true },
      },
    } as unknown as Awaited<ReturnType<typeof api.settings.info>>);
  vi.mocked(api.settings.claudeHome.get)
    .mockReset()
    .mockResolvedValue({ claude_home: "/home/u/.claude" });
  vi.mocked(api.settings.claudeHome.set)
    .mockReset()
    .mockResolvedValue({ ok: true, claude_home: "/srv/claude" });
  vi.mocked(api.settings.resetPricing).mockReset();
  vi.mocked(api.settings.reinstallHooks)
    .mockReset()
    .mockResolvedValue({ ok: true, hooks: { installed: true, hooks: {} } });
});

describe("ClaudeAgentHubSettings", () => {
  it("renders pricing, hook status and CLAUDE_HOME in their own sections", async () => {
    const { container } = render(<ClaudeAgentHubSettings />);
    expect(await screen.findByText("claude-opus-5-5")).toBeInTheDocument();
    for (const id of ["pricing", "hooks", "claude-home"]) {
      expect(container.querySelector(`section#${id}`)).not.toBeNull();
    }
    const hooks = container.querySelector("section#hooks") as HTMLElement;
    expect(within(hooks).getByText("SessionStart")).toBeInTheDocument();
    expect(within(hooks).getByText("/home/u/.claude/settings.json")).toBeInTheDocument();
    expect(await screen.findByDisplayValue("/home/u/.claude")).toBeInTheDocument();
  });

  it("saves a new CLAUDE_HOME and reinstalls hooks", async () => {
    const user = userEvent.setup();
    const { container } = render(<ClaudeAgentHubSettings />);
    const input = await screen.findByDisplayValue("/home/u/.claude");
    await user.clear(input);
    await user.type(input, "/srv/claude");
    const home = container.querySelector("section#claude-home") as HTMLElement;
    const off = confirmYes();
    await user.click(within(home).getByRole("button", { name: "Save" }));
    await waitFor(() => expect(api.settings.claudeHome.set).toHaveBeenCalledWith("/srv/claude"));
    off();

    const hooks = container.querySelector("section#hooks") as HTMLElement;
    await user.click(within(hooks).getByRole("button"));
    expect(api.settings.reinstallHooks).toHaveBeenCalledTimes(1);
  });

  it("re-reads hook status and tells the page after a CLAUDE_HOME save", async () => {
    const onHomeChanged = vi.fn();
    const user = userEvent.setup();
    const { container } = render(<ClaudeAgentHubSettings onHomeChanged={onHomeChanged} />);
    const input = await screen.findByDisplayValue("/home/u/.claude");
    await user.clear(input);
    await user.type(input, "/srv/claude");
    const home = container.querySelector("section#claude-home") as HTMLElement;
    const reads = vi.mocked(api.settings.info).mock.calls.length;
    const off = confirmYes();
    await user.click(within(home).getByRole("button", { name: "Save" }));
    await waitFor(() => expect(onHomeChanged).toHaveBeenCalledTimes(1));
    off();
    expect(vi.mocked(api.settings.info).mock.calls.length).toBeGreaterThan(reads);
  });

  it("resets pricing only on the second click", async () => {
    const user = userEvent.setup();
    vi.mocked(api.settings.resetPricing).mockResolvedValue({ ok: true, pricing: [RULE] });
    render(<ClaudeAgentHubSettings />);
    await user.click(await screen.findByRole("button", { name: "Reset Defaults" }));
    expect(api.settings.resetPricing).not.toHaveBeenCalled();
    await user.click(screen.getByRole("button", { name: "Confirm Reset" }));
    expect(api.settings.resetPricing).toHaveBeenCalledTimes(1);
    expect(await screen.findByText("Reset to 1 default rules")).toBeInTheDocument();
  });
});