public static bool IsValid(Proposal proposal)
{
return
(HasValidLoanValue(proposal) &&
HasValidInstallments(proposal) &&
HasValidWarranties(proposal) &&
HasValidProponents(proposal));
}
public static bool HasValidWarranties(Proposal proposal)
{
foreach (var warranty in proposal.Warranties)
{
if (!WarrantySpecification.IsProvinceAcceptable(warranty))
{
return(false);
}
// throw new Exception("Proposal has warranty with invalid state");
}
return(WarrantySpecification.HasCompatibleValue(proposal) && WarrantySpecification.HasAtLeastOne(proposal));
}
public static bool HasValidProponents(Proposal proposal)
{
foreach (var proponent in proposal.Proponents)
{
if (!ProponentSpecification.HasCompatibleIncome(proponent, proposal.InstallmentValue))
{
return(false);
}
// throw new Exception("Proposal has proponent with incompatible income");
}
return(ProponentSpecification.HasAtLeastTwo(proposal) &&
ProponentSpecification.HasSingleMain(proposal) &&
ProponentSpecification.AreAllOverEighteen(proposal));
}
// O valor do empréstimo deve estar entre R$ 30.000,00 e R$ 3.000.000,00
public static bool HasValidLoanValue(Proposal proposal)
{
return(proposal.LoanValue >= 30000 && proposal.LoanValue <= 3000000);
}
// O empréstimo deve ser pago em no mínimo 2 anos e no máximo 15 anos
public static bool HasValidInstallments(Proposal proposal)
{
return(proposal.Installments >= 2 * 12 && proposal.Installments <= 15 * 12);
}
// Deve haver no mínimo 2 proponentes por proposta
public static bool HasAtLeastTwo(Proposal proposal)
{
return(proposal.Proponents.Count >= 2);
}
// Todos os proponentes devem ser maiores de 18 anos
public static bool AreAllOverEighteen(Proposal proposal)
{
return(proposal.Proponents.Count(proponent => proponent.Age < 18) == 0);
}
// Deve haver exatamente 1 proponente principal por proposta
public static bool HasSingleMain(Proposal proposal)
{
return(proposal.Proponents.Count(proponent => proponent.IsMainProponent) == 1);
}
// Dever haver no mínimo 1 garantia de imóvel por proposta
public static bool HasAtLeastOne(Proposal proposal)
{
return(proposal.Warranties.Count > 1);
}
// A soma do valor das garantias deve ser maior ou igual ao dobro do valor do empréstimo
public static bool HasCompatibleValue(Proposal proposal)
{
return(proposal.Warranties.Sum(warranty => warranty.Value) >= proposal.LoanValue * 2);
}