using FinancialApi.Application;
using FinancialApi.Infrastructure;
using Microsoft.EntityFrameworkCore;
using Wolverine.Attributes;
using Wolverine.Persistence;

namespace FinancialApi;

public static class ApplyFeeHandler
{
    public static Task<Account?> LoadAsync(
        ApplyFeeCommand cmd,
        AccountDbContext db) => db.Set<Account>().AsNoTracking().SingleOrDefaultAsync(x => x.Id == cmd.AccountId);

    [Transactional]
    public static (Update<Account> UpdatedAccount, FeeAppliedEvent Event) Handle(
        ApplyFeeCommand cmd,
        Account account)
    {
        var updatedAccount = account.ApplyFee(cmd.Amount);

        var @event = new FeeAppliedEvent(account.Id, cmd.Amount);

        return (Storage.Update(updatedAccount), @event);
    }
}

public record ApplyFeeCommand(int AccountId, decimal Amount);

public record FeeAppliedEvent(int AccountId, decimal Amount);