@startuml Asura Tournament System
title Login
skinparam actorStyle awesome

Actor Admin #palegreen
participant Website
database Server #brown
hide footbox

    Admin->Website: login(username, passwd)
activate Admin
activate Website
    Website->Server: Login Request
activate Server
    Server-->Website: {status: success | failure}
deactivate Server
alt status = success
    Website-->Admin: "Login Successful"
opt if (userIsAdmin)
    Website->Admin: redirect(frontPage)
    else 
        Website->Admin: redirect(noSuchUserPage)
    end
end

deactivate Website
deactivate Admin
@enduml