davidbilik

class Repository(val api: Api) {
 fun login(email: String, password: String): Single<User> {
   return api.login(email, password)
       .onErrorResumeNext { error: Throwable ->
         val exception = when (error) {
           is HttpException -> {
             when (error.code()) {
               401 -> InvalidCredentialsException()
               400 -> {
                 val errorResponse: ValidationErrorResponse = error.bodyToValidationError()

davidbilik

class NoInternetConnectionException() : Exception()
class GeneralServerException(val code: Int) : Exception()
class UnexpectedException(val originalException: Exception) : Exception()
class InvalidCredentialsException : Exception()
class ValidationException(val errors: Map<String, List<String>>) : Exception()

davidbilik

// 400 error body entities
class FieldError(val field: String, val error: String)

class ValidationErrorResponse(val fields: List<FieldError>)

// repository reading data from api
class Repository(val api: Api) {
 fun login(email: String, password: String): Single<User> = api.login(email, password)
}

davidbilik

{
 "fields": [
   {
     "field": "email",
     "error": "invalid_email"
   }
 ]
}