// @vitest-environment jsdom
import {
  act,
  cleanup,
  fireEvent,
  render,
  screen,
  waitFor,
  within,
} from '@testing-library/react';
import { useState } from 'react';
import { afterEach, beforeEach, expect, test, vi } from 'vitest';

import defaults from '../game-creator.config.json';
import type {
  GameCreatorAppConfig,
  GameCreatorLlmConfig,
} from '../src/app/types';
import { CustomLlmSettings } from '../src/features/runtime-config/CustomLlmSettings';
import { RuntimeConfigDialog } from '../src/features/runtime-config/RuntimeConfigDialog';

const invoke = vi.fn();
const llm = {
  ...defaults.llm,
  customEnabled: true,
  baseUrl: 'https://models.example/v1',
  apiKey: 'test-custom-key',
  visibleModels: ['vendor/model.v1'],
} as GameCreatorLlmConfig;
function Harness() {
  const [draft, setDraft] = useState(llm);
  return <CustomLlmSettings llm={draft} disabled={false} onChange={setDraft} />;
}

beforeEach(() => {
  invoke.mockReset();
  window.__TAURI__ = { core: { invoke } };
});
afterEach(() => {
  cleanup();
  delete window.__TAURI__;
});

test('reads endpoint models, filters candidates, and previews only checked models', async () => {
  invoke.mockResolvedValue([
    'vendor/model.v1',
    'vendor/fast:latest',
    'hidden-model',
  ]);
  render(<Harness />);
  fireEvent.click(screen.getByRole('button', { name: '读取模型列表' }));
  await screen.findByText('已读取 3 个模型');
  expect(invoke).toHaveBeenCalledWith('discover_game_creator_llm_models', {
    llm,
  });
  fireEvent.click(screen.getByRole('checkbox', { name: 'vendor/fast:latest' }));
  const preview = screen.getByRole('region', { name: '已勾选模型预览' });
  expect(
    within(preview)
      .getAllByRole('listitem')
      .map((item) => item.textContent),
  ).toEqual(['vendor/model.v1 默认', 'vendor/fast:latest']);
  expect(within(preview).queryByText('hidden-model')).toBeNull();
  fireEvent.change(screen.getByRole('textbox', { name: '搜索模型' }), {
    target: { value: 'FAST' },
  });
  expect(screen.getAllByRole('checkbox')).toHaveLength(1);
  fireEvent.click(screen.getByRole('checkbox', { name: 'vendor/fast:latest' }));
  expect(within(preview).getAllByRole('listitem')).toHaveLength(1);
});

test('failed discovery preserves checked models and allows retry', async () => {
  invoke
    .mockRejectedValueOnce('模型列表读取失败（HTTP 401）')
    .mockResolvedValueOnce(['vendor/model.v1']);
  render(<Harness />);
  fireEvent.click(screen.getByRole('button', { name: '读取模型列表' }));
  await screen.findByRole('alert');
  expect(
    within(screen.getByRole('region', { name: '已勾选模型预览' })).getByText(
      /vendor\/model.v1/,
    ),
  ).not.toBeNull();
  fireEvent.click(screen.getByRole('button', { name: '读取模型列表' }));
  await screen.findByText('已读取 1 个模型');
  expect(screen.queryByRole('alert')).toBeNull();
});

test('changing endpoint discards an old in-flight result and clears old selections', async () => {
  let finish!: (models: string[]) => void;
  invoke.mockImplementation(
    () =>
      new Promise((resolve) => {
        finish = resolve;
      }),
  );
  render(<Harness />);
  fireEvent.click(screen.getByRole('button', { name: '读取模型列表' }));
  fireEvent.change(screen.getByLabelText('自定义 LLM API 地址'), {
    target: { value: 'https://new.example/v1' },
  });
  await act(async () => finish(['old-model']));
  expect(screen.queryByRole('checkbox', { name: 'old-model' })).toBeNull();
  expect(screen.getByText('尚未勾选模型')).not.toBeNull();
  expect(screen.getByRole('button', { name: '读取模型列表' })).toHaveProperty(
    'disabled',
    false,
  );
});

test('settings save retains custom credentials and checked models, and reopening restores them', async () => {
  let config = {
    ...defaults,
    llm,
    agentLlm: {},
    editorApi: { baseUrl: 'https://platform.example', apiKey: '' },
  } as GameCreatorAppConfig;
  invoke.mockImplementation(async (command, args) => {
    if (command === 'write_game_creator_app_config') config = args.config;
    if (
      command === 'read_game_creator_app_config' ||
      command === 'write_game_creator_app_config'
    )
      return { path: '/private/game-creator.config.json', config };
    if (command === 'discover_game_creator_llm_models')
      return ['vendor/model.v1', 'vendor/fast:latest'];
    return [];
  });
  const first = render(<RuntimeConfigDialog onClose={() => {}} />);
  await screen.findByLabelText('自定义 LLM API 地址');
  expect(screen.getByLabelText('自定义 LLM API Key')).toHaveProperty(
    'type',
    'password',
  );
  expect(screen.getByText('OpenAI Responses')).not.toBeNull();
  expect(screen.getByText('最高')).not.toBeNull();
  fireEvent.click(screen.getByRole('button', { name: '读取模型列表' }));
  await screen.findByText('已读取 2 个模型');
  fireEvent.click(screen.getByRole('checkbox', { name: 'vendor/fast:latest' }));
  fireEvent.click(screen.getByRole('button', { name: '保存' }));
  await waitFor(() =>
    expect(config.llm.visibleModels).toEqual([
      'vendor/model.v1',
      'vendor/fast:latest',
    ]),
  );
  expect(config.llm.apiKey).toBe('test-custom-key');
  expect(config.llm.customEnabled).toBe(true);
  first.unmount();
  render(<RuntimeConfigDialog onClose={() => {}} />);
  await screen.findByLabelText('自定义 LLM API 地址');
  expect(
    within(screen.getByRole('region', { name: '已勾选模型预览' })).getAllByRole(
      'listitem',
    ),
  ).toHaveLength(2);
});