import { render, screen } from '@testing-library/react';
import { describe, expect, it } from 'vitest';
import type { ValuationResult } from '@/lib/valuation-api';
import { ValuationResults } from '../valuation-results';

const mockResult: ValuationResult = {
  id: 'val-1',
  estimatedPriceVND: 5_000_000_000,
  confidence: 0.87,
  pricePerM2: 62_500_000,
  priceRangeLow: 4_500_000_000,
  priceRangeHigh: 5_500_000_000,
  comparables: [
    {
      id: 'comp-1',
      title: 'Căn hộ tương tự A',
      address: '456 Nguyễn Hữu Thọ',
      district: 'Quận 7',
      priceVND: '4800000000',
      areaM2: 78,
      pricePerM2: 61_500_000,
      similarity: 0.92,
    },
    {
      id: 'comp-2',
      title: 'Căn hộ tương tự B',
      address: '789 Phạm Viết Chánh',
      district: 'Bình Thạnh',
      priceVND: '5200000000',
      areaM2: 82,
      pricePerM2: 63_400_000,
      similarity: 0.85,
    },
  ],
  priceDrivers: [
    { feature: 'Vị trí trung tâm', impact: 15.5, direction: 'positive' },
    { feature: 'Tầng thấp', impact: -5.2, direction: 'negative' },
  ],
  modelVersion: 'v1.0',
  createdAt: '2026-01-15T10:00:00Z',
};

describe('ValuationResults', () => {
  it('renders estimated price', () => {
    render(<ValuationResults result={mockResult} />);
    expect(screen.getByText('5 tỷ VNĐ')).toBeInTheDocument();
  });

  it('renders confidence percentage', () => {
    render(<ValuationResults result={mockResult} />);
    expect(screen.getByText('87%')).toBeInTheDocument();
  });

  it('renders price per m2', () => {
    render(<ValuationResults result={mockResult} />);
    expect(screen.getByText('62.5 tr/m²')).toBeInTheDocument();
  });

  it('renders price range', () => {
    render(<ValuationResults result={mockResult} />);
    expect(screen.getByText('4.5 tỷ')).toBeInTheDocument();
    expect(screen.getByText('5.5 tỷ')).toBeInTheDocument();
  });

  it('renders price drivers section', () => {
    render(<ValuationResults result={mockResult} />);
    expect(screen.getByText('Yếu tố ảnh hưởng giá')).toBeInTheDocument();
    expect(screen.getByText(/Vị trí trung tâm/)).toBeInTheDocument();
    expect(screen.getByText(/Tầng thấp/)).toBeInTheDocument();
  });

  it('shows positive driver with + sign', () => {
    render(<ValuationResults result={mockResult} />);
    expect(screen.getByText(/\+15\.5%/)).toBeInTheDocument();
  });

  it('shows negative driver with - sign', () => {
    render(<ValuationResults result={mockResult} />);
    expect(screen.getByText(/-5\.2%/)).toBeInTheDocument();
  });

  it('hides drivers section when empty', () => {
    const noDrivers = { ...mockResult, priceDrivers: [] };
    render(<ValuationResults result={noDrivers} />);
    expect(screen.queryByText('Yếu tố ảnh hưởng giá')).not.toBeInTheDocument();
  });

});
