import { describe, it, expect } from 'vitest';
import { SponsorViewModel } from './SponsorViewModel';

describe('SponsorViewModel', () => {
  it('maps basic sponsor fields from DTO', () => {
    const dto = {
      id: 'sp-1',
      name: 'Acme Corp',
      logoUrl: '/logo.png',
      websiteUrl: 'https://acme.example',
    };

    const vm = new SponsorViewModel(dto as any);

    expect(vm.id).toBe(dto.id);
    expect(vm.name).toBe(dto.name);
    expect(vm.logoUrl).toBe(dto.logoUrl);
    expect(vm.websiteUrl).toBe(dto.websiteUrl);
  });

  it('does not assign optional fields when they are undefined', () => {
    const dto = {
      id: 'sp-2',
      name: 'Minimal Sponsor',
      logoUrl: undefined,
      websiteUrl: undefined,
    };

    const vm = new SponsorViewModel(dto as any);

    expect(vm.id).toBe(dto.id);
    expect(vm.name).toBe(dto.name);
    expect('logoUrl' in vm).toBe(false);
    expect('websiteUrl' in vm).toBe(false);
  });

  it('exposes simple UI helpers', () => {
    const withWebsite = new SponsorViewModel({ id: 'sp-3', name: 'With Site', websiteUrl: 'https://example.com' } as any);
    const withoutWebsite = new SponsorViewModel({ id: 'sp-4', name: 'No Site' } as any);

    expect(withWebsite.displayName).toBe(withWebsite.name);
    expect(withWebsite.hasWebsite).toBe(true);
    expect(withoutWebsite.hasWebsite).toBe(false);
    expect(withWebsite.websiteLinkText).toBe('Visit Website');
  });
});