Digital Wallet Class Model

classDiagram
  class User {
    +String id
    +String name
    +String mobile
    +KycLevel kycLevel
  }
  class Wallet {
    +String id
    +Decimal balance
    +addMoney(amount, method)
    +pay(merchant, amount)
    +transfer(toUser, amount)
    +limit() Decimal
  }
  class Transaction {
    +String id
    +Decimal amount
    +String type
    +String status
    +DateTime createdAt
  }
  class PaymentMethod {
    <<interface>>
    +charge(amount) Transaction
  }
  class UpiMethod
  class CardMethod
  class NetBankingMethod
  class KycLevel {
    <<enumeration>>
    MIN
    FULL
  }
  User "1" --> "1" Wallet
  User --> KycLevel
  Wallet "1" --> "*" Transaction
  PaymentMethod <|.. UpiMethod
  PaymentMethod <|.. CardMethod
  PaymentMethod <|.. NetBankingMethod
  Wallet ..> PaymentMethod : uses