[Projeto] exceptions

class SenderIdInvalidException implements Exception {

  String report = "SenderIdInvalidExecption";
  String idSender;

  SenderIdInvalidException({required this.idSender});

  @override
  String toString(){
    return "$report\nID Sender: $idSender";
  }

}
class ReceiverIdInvalidException implements Exception
{
  String report = "ReceiverIdInvalidException";
  String idReceiver;

  ReceiverIdInvalidException({required this.idReceiver});

  @override
  String toString(){
    return "$report\nID Sender: $idReceiver";
  }

}
class SendeNotAuthenticatedException implements Exception
{

  String idSender;
  SendeNotAuthenticatedException({required this.idSender});

}
class SenderBalenceLowerThaAmountException implements Exception
{

  String idSender;
  double senderBalce;
  double amount;

  SenderBalenceLowerThaAmountException({required this.idSender, required this.senderBalce, required this.amount});

}

import '../exceptions/bank_controller_exception.dart';
import '../models/account.dart';

class BankController {
  final Map<String, Account> _database = {};

  addAccount({required String id, required Account account}) {
    _database[id] = account;
  }

  bool makeTransfer(
      {required String idSender,
      required String idReceiver,
      required double amount}) {
      

    // Verificar se ID de remetente é válido
    if (!verifyId(idSender)) {
      throw SenderIdInvalidException(idSender: idSender);
    }

    // Verificar se ID de destinatário é válido
    if (!verifyId(idReceiver)) {
      throw ReceiverIdInvalidException(idReceiver: idReceiver);
    }

    Account accountSender = _database[idSender]!;
    Account accountReceiver = _database[idReceiver]!;

    // Verificar se o remetente está autenticado
    if (!accountSender.isAuthenticated) {
      throw SendeNotAuthenticatedException(idSender: idSender);
    }

    // Verificar se o remetente possui saldo suficiente
    if (accountSender.balance < amount) {
      throw SenderBalenceLowerThaAmountException(idSender: idSender, senderBalce: accountSender.balance, amount: amount);
    }

    // Se tudo estiver certo, efetivar transação
    accountSender.balance -= amount;
    accountReceiver.balance += amount;

    return true;
  }

  bool verifyId(String id) {
    return _database.containsKey(id);
  }
}

import 'controllers/bank_controller.dart';
import 'exceptions/bank_controller_exception.dart';
import 'models/account.dart';

void main() {
  // Criando o banco
  BankController bankController = BankController();

  // Adicionando contas
  bankController.addAccount(
      id: "Ricarth",
      account:
          Account(name: "Ricarth Lima", balance: 400, isAuthenticated: true));

  bankController.addAccount(
      id: "Kako",
      account:
          Account(name: "Caio Couto", balance: 600, isAuthenticated: true));

  // Fazendo transferência
  try{
      bool result = bankController.makeTransfer(
            idSender: "Kako22", idReceiver: "Ricarth", amount: 700);

        // Observando resultado
        if(result){
          print(result);
        }

  } on SenderIdInvalidException catch (e){
      print(e.toString());
      print("O id '${e.idSender}' está invalido para transferencia!");
  } on ReceiverIdInvalidException catch(e){
      print("O id '${e.idReceiver}' está invalido para receber transferencia!");
  } on SendeNotAuthenticatedException catch(e){
      print("O id '${e.idSender}' não está autorizado para fazer transferencia!");
  } on SenderBalenceLowerThaAmountException catch(e) {
      print("O id '${e.idSender}' tentou enviar ${e.amount} sendo que na sua conta tem apenas ${e.senderBalce}");
  } on Exception catch(e){
    print("Algo deu errado: ${e.toString()}");
  }
  
  
}