The application is for Parrot Wings (PW, “internal money”) transfer between system users. The application will be very “polite” and will inform a user of any problems (i.e. login not successful, not enough PW to remit the transaction, etc.)

Any person on Earth can register with the service for free, providing their Name (e.g. John Smith), valid email (e.g. jsmith@gmail.com) and password. When a new user registers, the System will verify, that the user has provided a unique (not previously registered in the system) email, and also provided human name and a password. These 3 fields are mandatory. Password is to be typed twice for justification. No email verification required. On successful registration every User will be awarded with 500 (five hundred) PW starting balance.

The system will allow users to perform the following operations:

1. See their Name and current PW balance always on screen
2. Create a new transaction. To make a new transaction (PW payment) a user will

a. Choose the recipient by querying the User list by name (autocomplete).

b. When a recipient chosen, entering the PW transaction amount. The system will check that the transaction amount is not greater than the current user balance.

c. Committing the transaction. Once transaction succeeded, the recipient account will be credited (PW++) by the entered amount of PW, and the payee account debited (PW--) for the same amount of PW. The system shall display PW balance changes immediately to the user.

3. (Optional) Create a new transaction as a copy from a list of their existing transactions: create a handy UI for a user to browse their recent transactions, and select a transaction as a basis for a new transaction. Once old transaction selected, all its details (recipient, PW amount) will be copied to the new transaction.
4. Review a list (history) of their transactions. A list of transactions will show the most recent transactions on top of the list and display the following info for each transaction:

a. Date/Time of the transaction

b Correspondent Name

c. Transaction amount, (Debit/Credit for PW transferred)

d. Resulting balance

(Optional) Implement filtering and/or sorting of transaction list by date, correspondent name and amount.