import { demoDepositProducts } from '../../../constants/mockData';
import {
  calculateFixedDepositMaturity,
  calculateRecurringDepositMaturity,
  getDepositCanonicalStatus,
  isDepositNearMaturity,
} from './depositCalculators';
import {
  validateFixedDepositInput,
  validateRecurringDepositInput,
} from './depositValidators';

describe('deposit calculators', () => {
  it('gives higher maturity for cumulative FD than non-cumulative FD', () => {
    const cumulative = calculateFixedDepositMaturity(100000, 7.1, 12, 'cumulative');
    const nonCumulative = calculateFixedDepositMaturity(
      100000,
      7.1,
      12,
      'non-cumulative',
    );

    expect(cumulative).toBeGreaterThan(nonCumulative);
    expect(nonCumulative).toBeGreaterThan(100000);
  });

  it('gives maturity above total contributions for RD', () => {
    const maturity = calculateRecurringDepositMaturity(5000, 6.8, 24);

    expect(maturity).toBeGreaterThan(5000 * 24);
  });
});

describe('deposit validators', () => {
  const fixedProduct = demoDepositProducts.find((product) => product.kind === 'fd')!;
  const recurringProduct = demoDepositProducts.find((product) => product.kind === 'rd')!;

  it('rejects fixed deposits below minimum amount', () => {
    const errors = validateFixedDepositInput(
      {
        amount: (fixedProduct.minimumAmount ?? 0) - 1,
        tenureMonths: fixedProduct.defaultTenureMonths,
        interestPayoutType: 'cumulative',
      },
      fixedProduct,
    );

    expect(errors.amount).toBeDefined();
  });

  it('rejects recurring deposits below minimum installment', () => {
    const errors = validateRecurringDepositInput(
      {
        monthlyInstallment: (recurringProduct.minimumInstallment ?? 0) - 1,
        tenureMonths: recurringProduct.defaultTenureMonths,
      },
      recurringProduct,
    );

    expect(errors.monthlyInstallment).toBeDefined();
  });
});

describe('deposit lifecycle helpers', () => {
  it('marks deposits with past maturity dates as matured', () => {
    const status = getDepositCanonicalStatus(
      {
        status: 'active',
        maturityDate: '2026-04-05T00:00:00.000Z',
      },
      new Date('2026-04-09T00:00:00.000Z'),
    );

    expect(status).toBe('matured');
  });

  it('identifies deposits maturing within 7 days', () => {
    const nearMaturity = isDepositNearMaturity(
      {
        status: 'active',
        maturityDate: '2026-04-14T00:00:00.000Z',
      },
      new Date('2026-04-09T00:00:00.000Z'),
    );

    expect(nearMaturity).toBe(true);
  });
});