import { afterEach, beforeEach, describe, expect, test, vi } from 'vitest';

import type { ProfileDashboardSummary } from '../../../packages/shared/src/contracts/runtime';
import {
  adjustProfileDashboardWalletBalance,
  reconcileProfileWalletLocalDeltaWithServerDashboard,
  resolveProfileWalletBalance,
} from './platformProfileWalletDeltaModel';

const NOW = Date.parse('2026-06-04T04:30:00.000Z');

function buildDashboard(
  overrides: Partial<ProfileDashboardSummary> = {},
): ProfileDashboardSummary {
  return {
    walletBalance: 100,
    totalPlayTimeMs: 0,
    playedWorldCount: 0,
    updatedAt: '2026-06-01T00:00:00.000Z',
    ...overrides,
  };
}

beforeEach(() => {
  vi.useFakeTimers();
  vi.setSystemTime(NOW);
});

afterEach(() => {
  vi.useRealTimers();
});

describe('platformProfileWalletDeltaModel', () => {
  test('normalizes wallet balance to a non-negative integer', () => {
    expect(resolveProfileWalletBalance(buildDashboard({ walletBalance: 12.8 }))).toBe(
      12,
    );
    expect(
      resolveProfileWalletBalance(buildDashboard({ walletBalance: -4 })),
    ).toBe(0);
    expect(resolveProfileWalletBalance({ walletBalance: Number.NaN })).toBe(0);
    expect(resolveProfileWalletBalance(null)).toBe(0);
  });

  test('applies local delta and refreshes dashboard timestamp', () => {
    expect(
      adjustProfileDashboardWalletBalance(buildDashboard(), -3.8),
    ).toMatchObject({
      walletBalance: 97,
      updatedAt: '2026-06-04T04:30:00.000Z',
    });
    expect(
      adjustProfileDashboardWalletBalance(buildDashboard({ walletBalance: 2 }), -10),
    ).toMatchObject({
      walletBalance: 0,
    });
    expect(adjustProfileDashboardWalletBalance(null, 5)).toBeNull();
    const dashboard = buildDashboard();
    expect(adjustProfileDashboardWalletBalance(dashboard, Number.POSITIVE_INFINITY)).toBe(
      dashboard,
    );
  });

  test('reconciles debit delta already reflected by latest server dashboard', () => {
    const previous = buildDashboard({ walletBalance: 100 });
    expect(
      reconcileProfileWalletLocalDeltaWithServerDashboard(
        previous,
        buildDashboard({ walletBalance: 98 }),
        -5,
      ),
    ).toBe(-3);
    expect(
      reconcileProfileWalletLocalDeltaWithServerDashboard(
        previous,
        buildDashboard({ walletBalance: 92 }),
        -5,
      ),
    ).toBe(0);
  });

  test('reconciles credit delta already reflected by latest server dashboard', () => {
    const previous = buildDashboard({ walletBalance: 100 });
    expect(
      reconcileProfileWalletLocalDeltaWithServerDashboard(
        previous,
        buildDashboard({ walletBalance: 103 }),
        8,
      ),
    ).toBe(5);
    expect(
      reconcileProfileWalletLocalDeltaWithServerDashboard(
        previous,
        buildDashboard({ walletBalance: 120 }),
        8,
      ),
    ).toBe(0);
  });

  test('does not reconcile when server balance moves against local delta', () => {
    const previous = buildDashboard({ walletBalance: 100 });
    expect(
      reconcileProfileWalletLocalDeltaWithServerDashboard(
        previous,
        buildDashboard({ walletBalance: 104 }),
        -5,
      ),
    ).toBe(-5);
    expect(
      reconcileProfileWalletLocalDeltaWithServerDashboard(
        previous,
        buildDashboard({ walletBalance: 96 }),
        8,
      ),
    ).toBe(8);
  });
});