User story 14: As PawerPay Kiosk, I would like to check my balance

[stephane-segning]

Description

Sequence Diagram

sequenceDiagram

participant kiosk as kiosk
participant ppa as power pay app
participant pps as power pay service
kiosk->>ppa : Check Balance ()
ppa->>pps : send request ()
pps-->>ppa : Requests for PIN(sends procedure ID)
ppa-->>kiosk : Display enter PIN
kiosk->>ppa : Send PIN (PIN)
ppa->>pps : send (PIN, procedure ID)
pps->>pps : validate PIN and check balance
pps-->>ppa : return balance info
ppa-->>kiosk : Display balance

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Wireframe

Tickets and Explanations

• Implement the check balance interface: The kiosk user should be able send the request in order to check his balance. This function will return the kiosk user's phone number in the backend.
• Implement the validateDisplayBalanceWithPin(id,PIN) function (REST API): Confirm a user's pin for a procedure. It will call the function that will check the balance if the pin is correct.
• Implement the checkBalance(PhoneN) function (REST API): check the balance of the Account having the phone number provided and display the balance.

Methodology:
To implement these, we'll need to include a procedure object with a status.

---
title: Class Diagramm
---
classDiagram
    Procedure -- Status
    Procedure -- Type
    Procedure <|-- Transaction
    Procedure <|-- CheckBalance
    Procedure <|-- UserRegistration
    
    class Status {
        <<enumeration>>
        DONE
        WAITING
        ERROR
    }
    class Type {
        <<enumeration>>
        Transaction
        CheckBalance
    }
    class Procedure {
        <<Abstract>>
        +String id
        -Status status = WAITING
        +String phoneNumber
        +void markAsDone()
        +void markAsError()
        +bool isDone()
        +bool isError()
        +bool isWaiting()
        +Type getType()
    }
    class Transaction {
        +String receiverPhoneNumber
        +Double amount
        +String currency = "XAF"
    }
    class CheckBalance {
    }
    class UserRegistration {
        +String opt
        +String userName
    }
    class User {
        +String pin (hashed)
        +String phoneNumber
        +String userName
    }

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