You must build a banking application. The application uses a database to store accounts. Each account has: Name, Current balance and a Transaction list. The transaction list is a list of each amount deposited or withdrawn. The application must be a console application where you interact using keyboard input.

• The application is started. [Ask for account name]

• The application must ask for the name of the bank account.

• You must then enter the name of the account.

• If the account name dont exist. One will be created.

• If an empty account name is entered, the application proceeds to the step [Display bank's total balance]

• The application will ask for an amount to deposit or withdraw. You must now enter an amount that is an integer, positive (deposit) or negative (withdrawal) or zero.

• If you enter an incorrect amount, ie. a text string that is not an integer as defined above, it must notify you that the amount is incorrect and ask for the amount again.

• The application should now return to [Ask for account name] and the user is given the opportunity to make new deposits in bank accounts.

• [Display of the bank's total balance] The application now shows the sum of all bank accounts' balance. Waiting for the user to press ENTER before finally closing.

• After the application runs there should be a database called "Bank", and in the database there should be a collection called "BankAccount".

• Implement the main task using any dependency injection container

• Use mongodb's aggregation framework to solve some part of the main task.

• Write unit tests that exercise and verify the code against the database.