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

const createPaymentDto = (overrides: Partial<any> = {}): any => ({
  id: 'pay-1',
  type: 'membership_fee',
  amount: 100.5,
  platformFee: 10.5,
  netAmount: 90,
  payerId: 'sponsor-1',
  payerType: 'sponsor',
  leagueId: 'league-1',
  seasonId: 'season-1',
  status: 'completed',
  createdAt: new Date('2024-01-01T10:00:00Z'),
  completedAt: new Date('2024-01-01T11:00:00Z'),
  ...overrides,
});

describe('PaymentViewModel', () => {
  it('maps DTO fields via Object.assign', () => {
    const dto = createPaymentDto();

    const vm = new PaymentViewModel(dto);

    expect(vm.id).toBe('pay-1');
    expect(vm.amount).toBe(100.5);
    expect(vm.netAmount).toBe(90);
    expect(vm.payerId).toBe('sponsor-1');
    expect(vm.leagueId).toBe('league-1');
  });

  it('formats amount and netAmount as EUR currency strings', () => {
    const vm = new PaymentViewModel(createPaymentDto({ amount: 50, netAmount: 40 }));

    expect(vm.formattedAmount).toBe('€50.00');
    expect(vm.formattedNetAmount).toBe('€40.00');
  });

  it('maps status to a statusColor', () => {
    const completed = new PaymentViewModel(createPaymentDto({ status: 'completed' }));
    const pending = new PaymentViewModel(createPaymentDto({ status: 'pending' }));
    const failed = new PaymentViewModel(createPaymentDto({ status: 'failed' }));
    const refunded = new PaymentViewModel(createPaymentDto({ status: 'refunded' }));
    const other = new PaymentViewModel(createPaymentDto({ status: 'unknown' }));

    expect(completed.statusColor).toBe('green');
    expect(pending.statusColor).toBe('yellow');
    expect(failed.statusColor).toBe('red');
    expect(refunded.statusColor).toBe('orange');
    expect(other.statusColor).toBe('gray');
  });

  it('formats createdAt and completedAt using locale formatting', () => {
    const vm = new PaymentViewModel(createPaymentDto());

    expect(typeof vm.formattedCreatedAt).toBe('string');
    expect(typeof vm.formattedCompletedAt).toBe('string');
  });

  it('handles missing completedAt with fallback text', () => {
    const vm = new PaymentViewModel(createPaymentDto({ completedAt: undefined }));

    expect(vm.formattedCompletedAt).toBe('Not completed');
  });

  it('derives display labels for status, type and payer type', () => {
    const vm = new PaymentViewModel(createPaymentDto({ status: 'pending', type: 'membership_fee', payerType: 'league' }));

    expect(vm.statusDisplay).toBe('Pending');
    expect(vm.typeDisplay).toBe('Membership Fee');
    expect(vm.payerTypeDisplay).toBe('League');
  });
});