コード例 #1
0
        private async Task PurchaseOrder()
        {
            WriteSection("Purchase");
            while (true)
            {
                try
                {
                    var product = _command.GetProduct();

                    await _mediator.Send(new SelectProduct(product));

                    while (true)
                    {
                        try
                        {
                            var coins = _command.GetCoins();

                            await _mediator.Send(new InsertCoins(coins));

                            break;
                        }
                        catch (NotSufficientAmountException ex)
                        {
                            _terminal.WriteLine($"{ex.Message}");
                            _terminal.WriteLine($"Remaining Amount: {ex.RemainingAmount}");

                            if (!_prompt.ReadBool(_insertRemainingAmountMessage, true))
                            {
                                await CancelOrder();

                                return;
                            }
                        }
                        catch (VendingMachineValiationException ex)
                        {
                            _terminal.WriteLine($"{ex.Message}");
                        }
                    }

                    if (!_prompt.ReadBool(_confirmPurchaseMessage, true))
                    {
                        await CancelOrder();

                        break;
                    }

                    await _mediator.Send(new ProcessOrder(false));

                    break;
                }
                catch (NotSufficientChangeException ex)
                {
                    _terminal.WriteLine(ex.Message);
                    if (_prompt.ReadBool(_confirmPurchaseMessage, false))
                    {
                        await CancelOrder();

                        break;
                    }
                    await _mediator.Send(new ProcessOrder(true));

                    break;
                }
                catch (ProductNotAvailableException ex)
                {
                    _terminal.WriteLine(ex.Message);
                }
                catch (VendingMachineValiationException ex)
                {
                    _terminal.WriteLine($"{ex.Message}");
                }
                catch (Exception ex)
                {
                    _terminal.WriteError(ex.Message);
                }
            }
        }