import { describe, it, expect } from 'vitest';
import { render, screen } from '@testing-library/react';
import { TauriBarChart, TauriLineChart, type ChartPoint } from './TauriCharts';

const zero: ChartPoint[] = Array.from({ length: 7 }, (_, i) => ({ label: `روز ${i}`, value: 0 }));
const real: ChartPoint[] = [
  { label: '۷ خرداد', value: 15 },
  { label: '۸ خرداد', value: 40 },
  { label: '۹ خرداد', value: 48 },
];

const EMPTY = 'داده‌ای برای نمایش نیست';

describe('TauriBarChart', () => {
  it('shows the empty state when every value is zero', () => {
    render(<TauriBarChart data={zero} />);
    expect(screen.getByText(EMPTY)).toBeInTheDocument();
  });

  it('shows the empty state when there is no data', () => {
    render(<TauriBarChart data={[]} />);
    expect(screen.getByText(EMPTY)).toBeInTheDocument();
  });

  it('renders the chart (x labels, no empty state) with real data', () => {
    render(<TauriBarChart data={real} />);
    expect(screen.queryByText(EMPTY)).not.toBeInTheDocument();
    expect(screen.getByText('۸ خرداد')).toBeInTheDocument();
  });
});

describe('TauriLineChart', () => {
  it('shows the empty state when every value is zero', () => {
    render(<TauriLineChart data={zero} />);
    expect(screen.getByText(EMPTY)).toBeInTheDocument();
  });

  it('shows the empty state with fewer than two points', () => {
    render(<TauriLineChart data={[{ label: 'x', value: 5 }]} />);
    expect(screen.getByText(EMPTY)).toBeInTheDocument();
  });

  it('renders the chart with real data', () => {
    const { container } = render(<TauriLineChart data={real} />);
    expect(screen.queryByText(EMPTY)).not.toBeInTheDocument();
    expect(container.querySelector('svg path')).toBeTruthy();
  });
});
