storage

type CollectionStore interface {
	// Create creates the "col" collection.
	Create(col pub.CollectionInterface) (pub.CollectionInterface, error)
	// AddTo adds "it" element to the "col" collection.
	AddTo(col pub.IRI, it pub.Item) error
	// RemoveFrom removes "it" item from "col" collection
	RemoveFrom(col pub.IRI, it pub.Item) error
}

type Filterable interface {
	GetLink() pub.IRI
}

type FilterableActivity interface {
	FilterableObject
	Actors() pub.IRIs
	Objects() pub.IRIs
	Targets() pub.IRIs
}

type FilterableCollection interface {
	FilterableObject
	TotalItemsGt() uint
	TotalItemsLt() uint
	TotalItemsEq() uint
	TotalItemsGtE() uint
	TotalItemsLtE() uint
	Contains() pub.IRIs
}

type FilterableItems interface {
	Filterable
	Types() pub.ActivityVocabularyTypes
	IRIs() pub.IRIs
}

type FilterableObject interface {
	FilterableItems
	AttributedTo() pub.IRIs
	InReplyTo() pub.IRIs
	MediaTypes() []pub.MimeType
	Names() []string
	Content() []string
	//PublishedBefore() time.Time
	//PublishedAfter() time.Time
	URLs() pub.IRIs
	// Audience returns the list of IRIs to check against full Audience targeting for the object
	// It should include all relevant fields: To, CC, BTo, BCC, and Audience
	// ---
	// An element of the Audience is used to get its Inbox end-point and then disseminate the current Activity
	// to it.
	Audience() pub.IRIs
	// Context returns the list of IRIs to check against an Object's Context property.
	Context() pub.IRIs
	// Generator returns the list of IRIs to check against an Object's Generator property.
	Generator() pub.IRIs
}

type ReadStore interface {
	// Load returns an Item or an ItemCollection from an IRI
	Load(pub.IRI) (pub.Item, error)
}

type Store interface {
	ReadStore
	WriteStore
}

type WriteStore interface {
	// Save saves the incoming ActivityStreams Object, and returns it together with any properties
	// populated by the method's side effects. (eg, Published property can point to the current time, etc.).
	Save(pub.Item) (pub.Item, error)
	// Delete deletes completely from storage the ActivityStreams Object
	Delete(pub.Item) error
}