package webserver

type Server struct {
    Timeout time.Duration
    Port int
    ListenAddress string
}
type Option func(*Server)

func Timeout(d time.Duration) Option {
    return func(s *Server) { s.Timeout = d }
}
func Port(p int) Option {
    return func(s *Server) { s.Port = p }
}

func New(opts ...Option) *Server {
    s := &Server{ // initialise with default values
        Timeout: 500*time.Millisecond,
        Port: 0, // uses a random port on the host
        ListenAddress: "http://localhost",
    }
    // apply all options
    for _, opt := range opts {
        opt(s)
    }
    return s
}

// usage examples from outside the package:
s := webserver.New() // uses all the default options
s := webserver.New(webserver.Timeout(time.Second), webserver.Port(8080))