mermaid-demo.md

mermaid-demo

classDiagram
    class UserController {
        -CreateUserService _createUserService
        +UserController(CreateUserService createUserService)
        +Create(string email, string username) User
    }

    class CreateUserService {
        -UserModel _userModel
        -SendWelcomeEmailService _sendWelcomeEmailService
        -Kafka _kafka
        +CreateUserService(UserModel um, SendWelcomeEmailService es, Kafka k)
        +Call(string email, string username) User
        -CheckActiveUsers(List~User~ users) bool
    }

    class UserModel {
        +FindUsersByEmail(string email) List~User~
        +CreateUser(string email, string username) User
    }

    class User {
        +int UserId
        +string Username
        +string Email
    }

    class SendWelcomeEmailService {
        +Call(string email, string username) bool
    }

    class Kafka {
        +PublishUserCreatedEvent(string email, string username) bool
    }

    UserController ..> CreateUserService: depends on
    CreateUserService ..> UserModel: depends on
    UserModel ..> User: depends on
    CreateUserService ..> SendWelcomeEmailService: depends on
    CreateUserService ..> Kafka: depends on

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