using System.Security.Cryptography;
using FinancialApi.Application.Commands;
using FinancialApi.Application.Handlers;
using FinancialApi.Application.Models;
using FinancialApi.Domain;
using FinancialApi.Domain.Entities;
using FluentAssertions;
using FluentAssertions.Execution;

namespace FinancialApi.Application.UnitTests;

public class ApplyFeeHandlerTests
{
    [Fact]
    public void GivenValidAccounts_BasicFee_ShouldValidateEverything()
    {
        // Arrange
        var command = new ApplyFeeCommand(1, 100);
        var account = new Account(1, 100, "Debit");
        var revenueAccount = new Account(99999, 0, "Credit");
        var pair = new FeeContext(account, revenueAccount, TimeProvider.System.GetUtcNow());

        // Act
        var intents = ApplyFeeHandler.Handle(command, pair);

        // Assert
        using var _ = new AssertionScope();
        intents.CustomerWrite.Entity.Balance.Should().Be(account.Balance - command.Amount);
        intents.RevenueWrite.Entity.Balance.Should().Be(revenueAccount.Balance + command.Amount);
        intents.JournalWrite.Entity.Lines.Count.Should().BeGreaterThanOrEqualTo(2);
        intents.Event.AccountId.Should().Be(account.Id);
        intents.Event.Amount.Should().Be(command.Amount);
    }
}