/**
 * @file PricingSettings.test.tsx
 * @description The shared Model Pricing table: each tool's tab shows its own
 * vendor's rows, **Show all models** lists the rest, a row added outside the
 * filter turns that switch on instead of vanishing, and Reset Defaults is
 * offered only where asked for (the Claude tab).
 * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
 */

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

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: { resetPricing: vi.fn() },
    },
  };
});

const rule = (model_pattern: string, display_name: string) =>
  ({
    model_pattern,
    display_name,
    input_per_mtok: 1,
    output_per_mtok: 2,
    cache_read_per_mtok: 0.1,
    cache_write_per_mtok: 0,
    cache_write_1h_per_mtok: 0,
    fast_input_per_mtok: 0,
    fast_output_per_mtok: 0,
    updated_at: "2026-09-29 10:00:00",
  }) as ModelPricing;

const ROWS = [rule("claude-opus-5-5%", "Claude Opus 5.5"), rule("gpt-5.6-sol%", "GPT-5.6 Sol")];

beforeEach(() => {
  i18n.changeLanguage("en");
  vi.mocked(api.pricing.list).mockReset().mockResolvedValue({ pricing: ROWS });
  vi.mocked(api.pricing.upsert)
    .mockReset()
    .mockResolvedValue({} as never);
});

describe("PricingSettings", () => {
  it("shows the vendor's rows, and the rest behind Show all models", async () => {
    const user = userEvent.setup();
    render(<PricingSettings vendor="openai" />);
    expect(await screen.findByText("gpt-5.6-sol%")).toBeInTheDocument();
    expect(screen.queryByText("claude-opus-5-5%")).toBeNull();
    expect(screen.queryByRole("button", { name: /Reset Defaults/i })).toBeNull();
    await user.click(screen.getByRole("checkbox", { name: /Show all models \(1 more\)/ }));
    expect(screen.getByText("claude-opus-5-5%")).toBeInTheDocument();
  });

  it("marks a row the automatic sync keeps up to date", async () => {
    vi.mocked(api.pricing.list).mockResolvedValue({
      pricing: [
        { ...rule("gpt-6-sol%", "GPT-6 Sol"), source: "sync" },
        { ...rule("gpt-5.6-sol%", "GPT-5.6 Sol"), source: "user" },
      ],
    });
    render(<PricingSettings vendor="openai" />);
    await screen.findByText("gpt-6-sol%");
    expect(screen.getAllByText("Auto")).toHaveLength(1);
  });

  it("says where OpenAI prices come from when there are none", async () => {
    vi.mocked(api.pricing.list).mockResolvedValue({ pricing: [ROWS[0]!] });
    render(<PricingSettings vendor="openai" />);
    expect(await screen.findByText(/added automatically from LiteLLM/)).toBeInTheDocument();
  });

  it("turns Show all on when a row outside the filter is added", async () => {
    const user = userEvent.setup();
    render(<PricingSettings vendor="openai" />);
    await screen.findByText("gpt-5.6-sol%");
    await user.click(screen.getByRole("button", { name: /Add Model/i }));
    const [pattern, name] = screen.getAllByRole("textbox");
    await user.type(pattern!, "deepseek-v4%");
    await user.type(name!, "DeepSeek V4");
    vi.mocked(api.pricing.list).mockResolvedValue({
      pricing: [...ROWS, rule("deepseek-v4%", "DeepSeek V4")],
    });
    await user.click(screen.getByTitle(/save/i));
    expect(await screen.findByText("deepseek-v4%")).toBeInTheDocument();
    expect(screen.getByRole("checkbox", { name: /Show all models/ })).toBeChecked();
  });

  it("offers Reset Defaults on the Claude tab, confirmed by a second click", async () => {
    const user = userEvent.setup();
    vi.mocked(api.settings.resetPricing).mockReset().mockResolvedValue({ ok: true, pricing: ROWS });
    render(<PricingSettings vendor="claude" allowReset />);
    expect(await screen.findByText("claude-opus-5-5%")).toBeInTheDocument();
    expect(screen.queryByText("gpt-5.6-sol%")).toBeNull();
    await user.click(screen.getByRole("button", { name: /Reset Defaults/i }));
    expect(api.settings.resetPricing).not.toHaveBeenCalled();
    await user.click(screen.getByRole("button", { name: /confirm/i }));
    expect(api.settings.resetPricing).toHaveBeenCalledTimes(1);
    expect(api.settings.resetPricing).toHaveBeenCalledWith("claude");
  });
});