package bus

type Address string

type Envelope interface {
	Message() any
	Address() Address
}

type BaseEnvelope struct {
	msg  any
	addr Address
}

// Address implements Envelope.
func (e *BaseEnvelope) Address() Address {
	return e.addr
}

// Message implements Envelope.
func (e *BaseEnvelope) Message() any {
	return e.msg
}

func NewEnvelope(addr Address, msg any) *BaseEnvelope {
	return &BaseEnvelope{
		addr: addr,
		msg:  msg,
	}
}

var _ Envelope = &BaseEnvelope{}