package sessions

import "time"

type Session struct {
	Id          string
	Description string
	CreatedAt   time.Time
}

func (s *Session) ExistsFor() time.Duration {
	return time.Now().Sub(s.CreatedAt)
}

type Storage interface {
	// Check if the storage contains any sessions
	HasSessions() (bool, error)

	// List all sessions
	GetSessions() ([]Session, error)

	// Start a new session
	StartSession(description string, createdAt time.Time) (Session, error)

	// End an old session
	EndSession(id string) error
}