import { describe, expect, it } from 'vitest';
import { render, screen } from '@testing-library/react';
import { ChatMessage } from '@/pages/Chat/ChatMessage';
import type { RawMessage } from '@/stores/chat';
import { appendBusinessResponseGuidance } from '../../shared/business-guidance';

describe('ChatMessage attachment dedupe', () => {
  it('keeps attachment-only assistant replies visible even when process attachments are suppressed', () => {
    const message: RawMessage = {
      role: 'assistant',
      content: [],
      _attachedFiles: [
        {
          fileName: 'artifact.png',
          mimeType: 'image/png',
          fileSize: 0,
          preview: '/tmp/artifact.png',
          filePath: '/tmp/artifact.png',
          source: 'tool-result',
        },
      ],
    };

    render(
      <ChatMessage
        message={message}
        suppressProcessAttachments
      />,
    );

    expect(screen.getByAltText('artifact.png')).toBeInTheDocument();
  });
});

describe('ChatMessage LaTeX rendering', () => {
  it('renders inline `$...$` math with KaTeX', () => {
    const message: RawMessage = {
      role: 'assistant',
      content: 'Mass-energy equivalence: $E=mc^2$ is famous.',
    };
    const { container } = render(<ChatMessage message={message} />);
    expect(container.querySelector('.katex')).not.toBeNull();
  });

  it('renders display `$$...$$` math as a block', () => {
    const message: RawMessage = {
      role: 'assistant',
      content: 'Definite integral:\n\n$$\n\\int_0^1 x\\,dx = \\frac{1}{2}\n$$\n',
    };
    const { container } = render(<ChatMessage message={message} />);
    expect(container.querySelector('.katex-display')).not.toBeNull();
  });

  it('renders `\\(...\\)` inline math (OpenAI-style escaping)', () => {
    const message: RawMessage = {
      role: 'assistant',
      content: 'Quadratic formula: \\(x = \\frac{-b \\pm \\sqrt{b^2-4ac}}{2a}\\).',
    };
    const { container } = render(<ChatMessage message={message} />);
    expect(container.querySelector('.katex')).not.toBeNull();
    expect(container.querySelector('.katex-display')).toBeNull();
  });

  it('renders `\\[...\\]` block math (OpenAI-style escaping)', () => {
    const message: RawMessage = {
      role: 'assistant',
      content: 'Sum formula:\n\n\\[\\sum_{i=1}^n i = \\frac{n(n+1)}{2}\\]',
    };
    const { container } = render(<ChatMessage message={message} />);
    expect(container.querySelector('.katex-display')).not.toBeNull();
  });

  it('does not rewrite `\\(` inside code fences', () => {
    const message: RawMessage = {
      role: 'assistant',
      content: 'Code sample:\n\n```\nprintf("\\(hello\\)")\n```\n',
    };
    const { container } = render(<ChatMessage message={message} />);
    expect(container.textContent).toContain('\\(hello\\)');
    expect(container.querySelector('.katex')).toBeNull();
  });
});

describe('ChatMessage business answer rendering', () => {
  it('renders a business summary panel for structured operational replies', () => {
    const message: RawMessage = {
      role: 'assistant',
      content: [
        '状态：需处理，携程渠道房态与 PMS 不一致。',
        '依据：携程 0508 房型显示可售 3 间，PMS 为 0 间。',
        '影响：可能产生超售风险。',
        '下一步：请先暂停该房型自动售卖，并复核渠道登录态。',
      ].join('\n'),
    };

    render(<ChatMessage message={message} />);

    const panel = screen.getByTestId('business-answer-panel');
    expect(panel).toHaveTextContent('业务摘要');
    expect(panel).toHaveTextContent('需处理，携程渠道房态与 PMS 不一致');
    expect(panel).toHaveTextContent('携程 0508 房型显示可售 3 间');
    expect(panel).toHaveTextContent('请先暂停该房型自动售卖');
  });

  it('does not add the business panel to ordinary assistant chat', () => {
    const message: RawMessage = {
      role: 'assistant',
      content: '你好，我可以帮你处理问题。',
    };

    render(<ChatMessage message={message} />);

    expect(screen.queryByTestId('business-answer-panel')).not.toBeInTheDocument();
  });
});

describe('ChatMessage markdown rendering', () => {
  it('hides legacy injected business guidance from visible user messages', () => {
    const message: RawMessage = {
      role: 'user',
      content: appendBusinessResponseGuidance('会话中的 markdown 结构化，表格也可以加强 UI 渲染'),
    };

    render(<ChatMessage message={message} />);

    expect(screen.getByText('会话中的 markdown 结构化，表格也可以加强 UI 渲染')).toBeInTheDocument();
    expect(screen.queryByText(/YINIAN_BUSINESS_RESPONSE_GUIDANCE/)).not.toBeInTheDocument();
    expect(screen.queryByText(/请按智念业务员工/)).not.toBeInTheDocument();
  });

  it('renders markdown tables inside the enhanced table shell', () => {
    const message: RawMessage = {
      role: 'assistant',
      content: [
        '| 渠道 | 房型 | 状态 |',
        '| --- | --- | --- |',
        '| 携程 | 豪华大床房 | 需复核 |',
      ].join('\n'),
    };

    render(<ChatMessage message={message} />);

    expect(screen.getByTestId('markdown-table-scroll')).toBeInTheDocument();
    expect(screen.getByTestId('markdown-table')).toHaveTextContent('豪华大床房');
  });
});