2019-12-03 16:23:59 +00:00
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package activitypub
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2017-09-11 20:45:57 +00:00
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2018-07-24 21:11:08 +00:00
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import (
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2019-08-21 20:21:32 +00:00
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"errors"
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2019-12-03 15:05:39 +00:00
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"time"
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2019-12-04 18:33:15 +00:00
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"unsafe"
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2018-07-24 21:11:08 +00:00
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)
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2018-06-09 12:05:46 +00:00
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2019-12-01 18:27:45 +00:00
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const CollectionOfItems ActivityVocabularyType = "ItemCollection"
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2019-05-16 09:08:27 +00:00
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var CollectionTypes = ActivityVocabularyTypes{
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CollectionOfItems,
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CollectionType,
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OrderedCollectionType,
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CollectionPageType,
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OrderedCollectionPageType,
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}
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2018-04-09 11:10:27 +00:00
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type CollectionInterface interface {
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ObjectOrLink
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Collection() ItemCollection
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Append(ob Item) error
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Count() uint
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Contains(IRI) bool
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}
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2018-07-18 15:39:27 +00:00
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// Collection is a subtype of Activity Pub Object that represents ordered or unordered sets of Activity Pub Object or Link instances.
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type Collection struct {
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// ID provides the globally unique identifier for anActivity Pub Object or Link.
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ID ID `jsonld:"id,omitempty"`
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// Type identifies the Activity Pub Object or Link type. Multiple values may be specified.
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Type ActivityVocabularyType `jsonld:"type,omitempty"`
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// Name a simple, human-readable, plain-text name for the object.
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// HTML markup MUST NOT be included. The name MAY be expressed using multiple language-tagged values.
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Name NaturalLanguageValues `jsonld:"name,omitempty,collapsible"`
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// Attachment identifies a resource attached or related to an object that potentially requires special handling.
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// The intent is to provide a model that is at least semantically similar to attachments in email.
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Attachment Item `jsonld:"attachment,omitempty"`
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// AttributedTo identifies one or more entities to which this object is attributed. The attributed entities might not be Actors.
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// For instance, an object might be attributed to the completion of another activity.
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AttributedTo Item `jsonld:"attributedTo,omitempty"`
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// Audience identifies one or more entities that represent the total population of entities
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// for which the object can considered to be relevant.
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Audience ItemCollection `jsonld:"audience,omitempty"`
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// Content or textual representation of the Activity Pub Object encoded as a JSON string.
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// By default, the value of content is HTML.
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// The mediaType property can be used in the object to indicate a different content type.
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// (The content MAY be expressed using multiple language-tagged values.)
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Content NaturalLanguageValues `jsonld:"content,omitempty,collapsible"`
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// Context identifies the context within which the object exists or an activity was performed.
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// The notion of "context" used is intentionally vague.
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// The intended function is to serve as a means of grouping objects and activities that share a
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// common originating context or purpose. An example could be all activities relating to a common project or event.
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Context Item `jsonld:"context,omitempty"`
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// MediaType when used on an Object, identifies the MIME media type of the value of the content property.
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// If not specified, the content property is assumed to contain text/html content.
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MediaType MimeType `jsonld:"mediaType,omitempty"`
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// EndTime the date and time describing the actual or expected ending time of the object.
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// When used with an Activity object, for instance, the endTime property specifies the moment
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// the activity concluded or is expected to conclude.
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EndTime time.Time `jsonld:"endTime,omitempty"`
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// Generator identifies the entity (e.g. an application) that generated the object.
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Generator Item `jsonld:"generator,omitempty"`
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// Icon indicates an entity that describes an icon for this object.
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// The image should have an aspect ratio of one (horizontal) to one (vertical)
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// and should be suitable for presentation at a small size.
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Icon Item `jsonld:"icon,omitempty"`
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// Image indicates an entity that describes an image for this object.
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// Unlike the icon property, there are no aspect ratio or display size limitations assumed.
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Image Item `jsonld:"image,omitempty"`
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// InReplyTo indicates one or more entities for which this object is considered a response.
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InReplyTo Item `jsonld:"inReplyTo,omitempty"`
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// Location indicates one or more physical or logical locations associated with the object.
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Location Item `jsonld:"location,omitempty"`
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// Preview identifies an entity that provides a preview of this object.
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Preview Item `jsonld:"preview,omitempty"`
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// Published the date and time at which the object was published
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Published time.Time `jsonld:"published,omitempty"`
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// Replies identifies a Collection containing objects considered to be responses to this object.
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Replies Item `jsonld:"replies,omitempty"`
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// StartTime the date and time describing the actual or expected starting time of the object.
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// When used with an Activity object, for instance, the startTime property specifies
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// the moment the activity began or is scheduled to begin.
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StartTime time.Time `jsonld:"startTime,omitempty"`
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// Summary a natural language summarization of the object encoded as HTML.
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// *Multiple language tagged summaries may be provided.)
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Summary NaturalLanguageValues `jsonld:"summary,omitempty,collapsible"`
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// Tag one or more "tags" that have been associated with an objects. A tag can be any kind of Activity Pub Object.
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// The key difference between attachment and tag is that the former implies association by inclusion,
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// while the latter implies associated by reference.
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Tag ItemCollection `jsonld:"tag,omitempty"`
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// Updated the date and time at which the object was updated
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Updated time.Time `jsonld:"updated,omitempty"`
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// URL identifies one or more links to representations of the object
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URL LinkOrIRI `jsonld:"url,omitempty"`
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// To identifies an entity considered to be part of the public primary audience of an Activity Pub Object
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To ItemCollection `jsonld:"to,omitempty"`
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// Bto identifies anActivity Pub Object that is part of the private primary audience of this Activity Pub Object.
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Bto ItemCollection `jsonld:"bto,omitempty"`
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// CC identifies anActivity Pub Object that is part of the public secondary audience of this Activity Pub Object.
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CC ItemCollection `jsonld:"cc,omitempty"`
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// BCC identifies one or more Objects that are part of the private secondary audience of this Activity Pub Object.
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BCC ItemCollection `jsonld:"bcc,omitempty"`
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// Duration when the object describes a time-bound resource, such as an audio or video, a meeting, etc,
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// the duration property indicates the object's approximate duration.
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// The value must be expressed as an xsd:duration as defined by [ xmlschema11-2],
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// section 3.3.6 (e.g. a period of 5 seconds is represented as "PT5S").
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Duration time.Duration `jsonld:"duration,omitempty"`
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2019-12-03 19:50:26 +00:00
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// This is a list of all Like activities with this object as the object property, added as a side effect.
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// The likes collection MUST be either an OrderedCollection or a Collection and MAY be filtered on privileges
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// of an authenticated user or as appropriate when no authentication is given.
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Likes Item `jsonld:"likes,omitempty"`
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// This is a list of all Announce activities with this object as the object property, added as a side effect.
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// The shares collection MUST be either an OrderedCollection or a Collection and MAY be filtered on privileges
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// of an authenticated user or as appropriate when no authentication is given.
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Shares Item `jsonld:"shares,omitempty"`
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// Source property is intended to convey some sort of source from which the content markup was derived,
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// as a form of provenance, or to support future editing by clients.
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// In general, clients do the conversion from source to content, not the other way around.
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Source Source `jsonld:"source,omitempty"`
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// In a paged Collection, indicates the page that contains the most recently updated member items.
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Current ObjectOrLink `jsonld:"current,omitempty"`
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// In a paged Collection, indicates the furthest preceeding page of items in the collection.
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First ObjectOrLink `jsonld:"first,omitempty"`
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// In a paged Collection, indicates the furthest proceeding page of the collection.
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Last ObjectOrLink `jsonld:"last,omitempty"`
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// A non-negative integer specifying the total number of objects contained by the logical view of the collection.
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// This number might not reflect the actual number of items serialized within the Collection object instance.
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TotalItems uint `jsonld:"totalItems"`
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// Identifies the items contained in a collection. The items might be ordered or unordered.
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Items ItemCollection `jsonld:"items,omitempty"`
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}
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2019-12-19 12:30:18 +00:00
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type (
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// FollowersCollection is a collection of followers
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FollowersCollection = Followers
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// Followers is a Collection type
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Followers = Collection
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// FollowingCollection is a list of everybody that the actor has followed, added as a side effect.
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// The following collection MUST be either an OrderedCollection or a Collection and MAY
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// be filtered on privileges of an authenticated user or as appropriate when no authentication is given.
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FollowingCollection = Following
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// Following is a type alias for a simple Collection
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Following = Collection
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)
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// CollectionNew initializes a new Collection
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func CollectionNew(id ID) *Collection {
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c := Collection{ID: id, Type: CollectionType}
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c.Name = NaturalLanguageValuesNew()
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c.Content = NaturalLanguageValuesNew()
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c.Summary = NaturalLanguageValuesNew()
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return &c
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}
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// OrderedCollectionNew initializes a new OrderedCollection
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func OrderedCollectionNew(id ID) *OrderedCollection {
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o := OrderedCollection{ID: id, Type: OrderedCollectionType}
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o.Name = NaturalLanguageValuesNew()
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o.Content = NaturalLanguageValuesNew()
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2018-06-09 12:05:46 +00:00
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return &o
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2017-09-11 21:16:43 +00:00
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}
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// GetID returns the ID corresponding to the Collection object
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func (c Collection) GetID() ID {
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return c.ID
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2019-06-02 14:45:37 +00:00
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}
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2018-07-16 13:58:36 +00:00
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// GetType returns the Collection's type
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func (c Collection) GetType() ActivityVocabularyType {
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return c.Type
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}
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2018-07-16 13:58:36 +00:00
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// IsLink returns false for a Collection object
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func (c Collection) IsLink() bool {
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return false
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}
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2018-07-16 13:58:36 +00:00
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// IsObject returns true for a Collection object
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func (c Collection) IsObject() bool {
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return true
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}
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2018-07-16 13:58:36 +00:00
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// IsCollection returns true for Collection objects
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func (c Collection) IsCollection() bool {
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return true
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}
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2018-07-16 13:58:36 +00:00
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2019-12-03 15:05:39 +00:00
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// GetLink returns the IRI corresponding to the Collection object
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func (c Collection) GetLink() IRI {
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return IRI(c.ID)
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}
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2018-07-16 13:58:36 +00:00
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// Collection returns the Collection's items
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func (c Collection) Collection() ItemCollection {
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return c.Items
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}
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2018-07-16 13:58:36 +00:00
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2019-12-03 15:05:39 +00:00
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// Append adds an element to a Collection
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func (c *Collection) Append(ob Item) error {
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c.Items = append(c.Items, ob)
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return nil
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}
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2019-12-03 15:05:39 +00:00
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// Count returns the maximum between the length of Items in collection and its TotalItems property
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func (c *Collection) Count() uint {
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if c.TotalItems > 0 {
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return c.TotalItems
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}
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return uint(len(c.Items))
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2018-06-09 12:05:46 +00:00
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}
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2018-07-07 19:27:34 +00:00
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2019-12-03 15:05:39 +00:00
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// Contains verifies if Collection array contains the received one
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func (c Collection) Contains(r IRI) bool {
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if len(c.Items) == 0 {
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return false
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}
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for _, iri := range c.Items {
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if r.Equals(iri.GetLink(), false) {
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return true
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}
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}
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return false
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}
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// UnmarshalJSON
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func (c *Collection) UnmarshalJSON(data []byte) error {
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if ItemTyperFunc == nil {
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ItemTyperFunc = JSONGetItemByType
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}
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c.ID = JSONGetID(data)
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c.Type = JSONGetType(data)
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c.Name = JSONGetNaturalLanguageField(data, "name")
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c.Content = JSONGetNaturalLanguageField(data, "content")
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c.Summary = JSONGetNaturalLanguageField(data, "summary")
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c.Context = JSONGetItem(data, "context")
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c.URL = JSONGetURIItem(data, "url")
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c.MediaType = MimeType(JSONGetString(data, "mediaType"))
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c.Generator = JSONGetItem(data, "generator")
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c.AttributedTo = JSONGetItem(data, "attributedTo")
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c.Attachment = JSONGetItem(data, "attachment")
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c.Location = JSONGetItem(data, "location")
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c.Published = JSONGetTime(data, "published")
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c.StartTime = JSONGetTime(data, "startTime")
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c.EndTime = JSONGetTime(data, "endTime")
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c.Duration = JSONGetDuration(data, "duration")
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c.Icon = JSONGetItem(data, "icon")
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c.Preview = JSONGetItem(data, "preview")
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c.Image = JSONGetItem(data, "image")
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c.Updated = JSONGetTime(data, "updated")
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inReplyTo := JSONGetItems(data, "inReplyTo")
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if len(inReplyTo) > 0 {
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c.InReplyTo = inReplyTo
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}
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to := JSONGetItems(data, "to")
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if len(to) > 0 {
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c.To = to
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}
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audience := JSONGetItems(data, "audience")
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if len(audience) > 0 {
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c.Audience = audience
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}
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bto := JSONGetItems(data, "bto")
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if len(bto) > 0 {
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c.Bto = bto
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}
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cc := JSONGetItems(data, "cc")
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if len(cc) > 0 {
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c.CC = cc
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}
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bcc := JSONGetItems(data, "bcc")
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if len(bcc) > 0 {
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c.BCC = bcc
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}
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replies := JSONGetItem(data, "replies")
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if replies != nil {
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c.Replies = replies
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}
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tag := JSONGetItems(data, "tag")
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if len(tag) > 0 {
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c.Tag = tag
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}
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2018-12-02 15:50:40 +00:00
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2019-01-30 15:19:29 +00:00
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c.TotalItems = uint(JSONGetInt(data, "totalItems"))
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c.Items = JSONGetItems(data, "items")
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2018-12-02 15:50:40 +00:00
|
|
|
|
2019-01-30 15:19:29 +00:00
|
|
|
c.Current = JSONGetItem(data, "current")
|
|
|
|
c.First = JSONGetItem(data, "first")
|
|
|
|
c.Last = JSONGetItem(data, "last")
|
2018-07-24 21:11:08 +00:00
|
|
|
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
2019-12-19 12:35:05 +00:00
|
|
|
// MarshalJSON
|
|
|
|
func (c Collection) MarshalJSON() ([]byte, error) {
|
2019-12-19 16:05:12 +00:00
|
|
|
b := make([]byte, 0)
|
2019-12-19 12:35:05 +00:00
|
|
|
notEmpty := false
|
2019-12-19 16:05:12 +00:00
|
|
|
write(&b, '{')
|
2019-12-19 12:35:05 +00:00
|
|
|
|
|
|
|
OnObject(c, func(o *Object) error {
|
|
|
|
notEmpty = writeObject(&b, *o)
|
|
|
|
return nil
|
|
|
|
})
|
|
|
|
if c.Current != nil {
|
|
|
|
notEmpty = writeItemProp(&b, "current", c.Current) || notEmpty
|
|
|
|
}
|
|
|
|
if c.First != nil {
|
|
|
|
notEmpty = writeItemProp(&b, "first", c.First) || notEmpty
|
|
|
|
}
|
|
|
|
if c.Last != nil {
|
|
|
|
notEmpty = writeItemProp(&b, "last", c.Last) || notEmpty
|
|
|
|
}
|
|
|
|
if c.Items != nil {
|
|
|
|
notEmpty = writeItemCollectionProp(&b, "items", c.Items) || notEmpty
|
|
|
|
}
|
2019-12-19 13:44:39 +00:00
|
|
|
notEmpty = writeIntProp(&b, "totalItems", int64(c.TotalItems)) || notEmpty
|
2019-12-19 12:35:05 +00:00
|
|
|
|
|
|
|
if notEmpty {
|
2019-12-19 16:05:12 +00:00
|
|
|
write(&b, '}')
|
|
|
|
return b, nil
|
2019-12-19 12:35:05 +00:00
|
|
|
}
|
|
|
|
return nil, nil
|
|
|
|
}
|
|
|
|
|
2019-08-21 20:21:32 +00:00
|
|
|
// ToCollection
|
|
|
|
func ToCollection(it Item) (*Collection, error) {
|
|
|
|
switch i := it.(type) {
|
|
|
|
case *Collection:
|
|
|
|
return i, nil
|
|
|
|
case Collection:
|
|
|
|
return &i, nil
|
2019-12-04 18:33:15 +00:00
|
|
|
case *CollectionPage:
|
|
|
|
return (*Collection)(unsafe.Pointer(i)), nil
|
|
|
|
case CollectionPage:
|
|
|
|
return (*Collection)(unsafe.Pointer(&i)), nil
|
2019-08-21 20:21:32 +00:00
|
|
|
}
|
|
|
|
return nil, errors.New("unable to convert to collection")
|
|
|
|
}
|
2019-12-19 12:30:18 +00:00
|
|
|
|
|
|
|
// FollowingNew initializes a new Following
|
|
|
|
func FollowingNew() *Following {
|
|
|
|
id := ID("following")
|
|
|
|
|
|
|
|
i := Following{ID: id, Type: CollectionType}
|
|
|
|
i.Name = NaturalLanguageValuesNew()
|
|
|
|
i.Content = NaturalLanguageValuesNew()
|
|
|
|
i.Summary = NaturalLanguageValuesNew()
|
|
|
|
|
|
|
|
i.TotalItems = 0
|
|
|
|
|
|
|
|
return &i
|
|
|
|
}
|