flow

type Controller interface {
	Start(userID string) error
	NextStep(userID string, from int, value interface{}) error
	GetCurrentStep(userID string) (steps.Step, int, error)
	GetHandlerURL() string
	GetFlow() Flow
	Cancel(userID string) error
	SetProperty(userID, propertyName string, value interface{}) error
}

type Flow interface {
	Steps() []steps.Step
	Step(i int) steps.Step
	URL() string
	Length() int
	FlowDone(userID string)
}

type PropertyStore interface {
	SetProperty(userID, propertyName string, value interface{}) error
}

type Store interface {
	SetPostID(userID, propertyName, postID string) error
	GetPostID(userID, propertyName string) (string, error)
	RemovePostID(userID, propertyName string) error
	GetCurrentStep(userID string) (int, error)
	SetCurrentStep(userID string, step int) error
	DeleteCurrentStep(userID string) error
}