package br.com.caelum.stella.validation.ie;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Pattern;
import br.com.caelum.stella.DigitoPara;
import br.com.caelum.stella.MessageProducer;
import br.com.caelum.stella.ValidationMessage;
import br.com.caelum.stella.validation.BaseValidator;
import br.com.caelum.stella.validation.InvalidValue;
import br.com.caelum.stella.validation.Validator;
import br.com.caelum.stella.validation.error.IEError;
class IESaoPauloProdutorRuralValidator implements Validator<String> {
private final boolean isFormatted;
public static final Pattern FORMATED = Pattern.compile("P-\\d{8}\\.\\d{1}/\\d{3}");
public static final Pattern UNFORMATED = Pattern.compile("P\\d{12}");
public IESaoPauloProdutorRuralValidator(MessageProducer messageProducer, boolean isFormatted) {
this.baseValidator = new BaseValidator(messageProducer);
this.isFormatted = isFormatted;
}
private List<InvalidValue> getInvalidValues(String ie) {
List<InvalidValue> errors = new ArrayList<InvalidValue>();
errors.clear();
if (ie != null) {
String unformatedIE = checkForCorrectFormat(ie, errors);
if (errors.isEmpty()) {
if (!hasValidCheckDigits(unformatedIE)) {
errors.add(IEError.INVALID_CHECK_DIGITS);
}
}
}
return errors;
}
private String checkForCorrectFormat(String ie, List<InvalidValue> errors) {
String unformatedIE = null;
if (isFormatted) {
if (!(FORMATED.matcher(ie).matches())) {
errors.add(IEError.INVALID_FORMAT);
}
unformatedIE = ie.replaceAll("\\D", "");
} else {
if (!UNFORMATED.matcher(ie).matches()) {
errors.add(IEError.INVALID_DIGITS);
}
unformatedIE = ie.replaceAll("\\D", "");
}
return unformatedIE;
}
protected boolean hasValidCheckDigits(String unformattedIE) {
String iESemDigito = unformattedIE.substring(0, unformattedIE.length() - 4);
String digito = unformattedIE.substring(unformattedIE.length() - 4, unformattedIE.length() - 3);
String digitoCalculado = calculaDigito(iESemDigito);
return digito.equals(digitoCalculado);
}
private String calculaDigito(String iESemDigito) {
return new DigitoPara(iESemDigito).comMultiplicadores(10,8,7,6,5,4,3,1)
.trocandoPorSeEncontrar("0", 10).trocandoPorSeEncontrar("1", 11).calcula();
}
public boolean isEligible(String value) {
boolean result;
if (isFormatted) {
result = FORMATED.matcher(value).matches();
} else {
result = UNFORMATED.matcher(value).matches();
}
return result;
}
private final BaseValidator baseValidator;
public void assertValid(String cpf) {
baseValidator.assertValid(getInvalidValues(cpf));
}
public List<ValidationMessage> invalidMessagesFor(String cpf) {
return baseValidator.generateValidationMessages(getInvalidValues(cpf));
}
}