add some works

activitypub/README.md

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+# ActivityPub
+
+This package contains functions for handling the ActivityPub spec. 

activitypub/activity.go

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+package activitypub
+
+import "time"
+
+const (
+	Namespace = "https://www.w3.org/ns/activitystreams"
+	toPublic  = "https://www.w3.org/ns/activitystreams#Public"
+)
+
+var Extensions = map[string]string{
+	"sc":              "http://schema.org#",
+	"commentsEnabled": "sc:Boolean",
+}
+
+// Activity describes actions that have either already occurred, are in the
+// process of occurring, or may occur in the future.
+type Activity struct {
+	BaseObject
+	Actor     string    `json:"actor"`
+	Published time.Time `json:"published,omitempty"`
+	To        []string  `json:"to,omitempty"`
+	CC        []string  `json:"cc,omitempty"`
+	Object    *Object   `json:"object"`
+}
+
+type FollowActivity struct {
+	BaseObject
+	Actor     string    `json:"actor"`
+	Published time.Time `json:"published,omitempty"`
+	To        []string  `json:"to,omitempty"`
+	CC        []string  `json:"cc,omitempty"`
+	Object    string    `json:"object"`
+}
+
+// NewCreateActivity builds a basic Create activity that includes the given
+// Object and the Object's AttributedTo property as the Actor.
+func NewCreateActivity(o *Object) *Activity {
+	a := Activity{
+		BaseObject: BaseObject{
+			Context: []interface{}{
+				Namespace,
+				Extensions,
+			},
+			ID:   o.ID,
+			Type: "Create",
+		},
+		Actor:     o.AttributedTo,
+		Object:    o,
+		Published: o.Published,
+	}
+	return &a
+}
+
+// NewUpdateActivity builds a basic Update activity that includes the given
+// Object and the Object's AttributedTo property as the Actor.
+func NewUpdateActivity(o *Object) *Activity {
+	a := Activity{
+		BaseObject: BaseObject{
+			Context: []interface{}{
+				Namespace,
+				Extensions,
+			},
+			ID:   o.ID,
+			Type: "Update",
+		},
+		Actor:     o.AttributedTo,
+		Object:    o,
+		Published: o.Published,
+	}
+	return &a
+}
+
+// NewDeleteActivity builds a basic Delete activity that includes the given
+// Object and the Object's AttributedTo property as the Actor.
+func NewDeleteActivity(o *Object) *Activity {
+	a := Activity{
+		BaseObject: BaseObject{
+			Context: []interface{}{
+				Namespace,
+			},
+			ID:   o.ID,
+			Type: "Delete",
+		},
+		Actor:  o.AttributedTo,
+		Object: o,
+	}
+	return &a
+}
+
+// NewFollowActivity builds a basic Follow activity.
+func NewFollowActivity(actorIRI, followeeIRI string) *FollowActivity {
+	a := FollowActivity{
+		BaseObject: BaseObject{
+			Context: []interface{}{
+				Namespace,
+			},
+			Type: "Follow",
+		},
+		Actor:  actorIRI,
+		Object: followeeIRI,
+	}
+	return &a
+}
+
+// NewNoteObject creates a basic Note object that includes the public
+// namespace in IRIs it's addressed to.
+func NewNoteObject() *Object {
+	o := Object{
+		BaseObject: BaseObject{
+			Type: "Note",
+		},
+		To: []string{
+			toPublic,
+		},
+	}
+	return &o
+}
+
+// NewArticleObject creates a basic Article object that includes the public
+// namespace in IRIs it's addressed to.
+func NewArticleObject() *Object {
+	o := Object{
+		BaseObject: BaseObject{
+			Type: "Article",
+		},
+		To: []string{
+			toPublic,
+		},
+	}
+	return &o
+}
+
+// NewAnounceObject creates a basic Anounce object that includes the public
+// namespace in IRIs it's addressed to.
+func NewAnounceObject() *Object {
+	o := Object{
+		BaseObject: BaseObject{
+			Type: "Anounce",
+		},
+		To: []string{
+			toPublic,
+		},
+	}
+	return &o
+}

activitypub/person.go

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+package activitypub
+
+// An Person actor
+// Ref: https://www.w3.org/TR/activitystreams-vocabulary/#dfn-person
+type Person struct {
+	BaseObject
+	Inbox             string    `json:"inbox"`
+	Outbox            string    `json:"outbox"`
+	PreferredUsername string    `json:"preferredUsername"`
+	URL               string    `json:"url"`
+	Name              string    `json:"name"`
+	Icon              Image     `json:"icon"`
+	Following         string    `json:"following"`
+	Followers         string    `json:"followers"`
+	Summary           string    `json:"summary"`
+	PublicKey         PublicKey `json:"publicKey"`
+	Endpoints         Endpoints `json:"endpoints"`
+}
+
+// NewPerson creates an ActivityPub Person
+func NewPerson(id string) *Person {
+	p := Person{
+		BaseObject: BaseObject{
+			Type: "Person",
+			Context: []interface{}{
+				Namespace,
+			},
+			ID: id,
+		},
+		Following: id + "/following",
+		Followers: id + "/followers",
+		Inbox:     id + "/inbox",
+		Outbox:    id + "/outbox",
+	}
+
+	return &p
+}
+
+// AddPubKey add public key to Person
+func (p *Person) AddPubKey(k []byte) {
+	p.Context = append(p.Context, "https://w3id.org/security/v1")
+	p.PublicKey = PublicKey{
+		ID:           p.ID + "#main-key",
+		Owner:        p.ID,
+		PublicKeyPEM: string(k),
+	}
+}
+
+// SetPrivateKey set private key to Person
+func (p *Person) SetPrivateKey(k []byte) {
+	p.PublicKey.privateKey = k
+}
+
+// GetPrivateKey get private key
+func (p *Person) GetPrivateKey() []byte {
+	return p.PublicKey.privateKey
+}

activitypub/vocab.go

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+package activitypub
+
+import (
+	"fmt"
+	"net/url"
+	"time"
+)
+
+const context = "https://ww.w3.org/ns/activitystreams"
+
+type (
+	BaseObject struct {
+		Context []interface{} `json:"@context,omitempty"`
+		Type    string        `json:"type"`
+		ID      string        `json:"id"`
+	}
+
+	PublicKey struct {
+		ID           string `json:"id"`
+		Owner        string `json:"owner"`
+		PublicKeyPEM string `json:"publicKeyPem"`
+		privateKey   []byte
+	}
+
+	Endpoints struct {
+		SharedInbox string `json:"sharedInbox,omitempty"`
+	}
+
+	Image struct {
+		Type      string `json:"type"`
+		MediaType string `json:"mediaType"`
+		URL       string `json:"url"`
+	}
+
+	// Object is the primary base type for the Activity Streams vocabulary.
+	Object struct {
+		BaseObject
+		Published    time.Time         `json:"published"`
+		Summary      *string           `json:"summary,omitempty"`
+		InReplyTo    *string           `json:"inReplyTo"`
+		URL          string            `json:"url"`
+		AttributedTo string            `json:"attributedTo"`
+		To           []string          `json:"to"`
+		CC           []string          `json:"cc,omitempty"`
+		Name         string            `json:"name,omitempty"`
+		Content      string            `json:"content"`
+		ContentMap   map[string]string `json:"contentMap,omitempty"`
+		//Tag          []Tag             `json:"tag"`
+
+		// Extensions
+		CommentsEnabled bool `json:"commentsEnabled"`
+	}
+
+	Group struct {
+		Context string   `json:"@context"`
+		ID      *url.URL `json:"id"`
+		Name    string   `json:"name"`
+		Type    string   `json:"type"`
+	}
+)
+
+type OrderedCollection struct {
+	BaseObject
+	TotalItems int    `json:"totalItems"`
+	First      string `json:"first"`
+	Last       string `json:"last,omitempty"`
+}
+
+func NewOrderedCollection(accountRoot, collType string, items int) *OrderedCollection {
+	oc := OrderedCollection{
+		BaseObject: BaseObject{
+			Context: []interface{}{
+				Namespace,
+			},
+			ID:   accountRoot + "/" + collType,
+			Type: "OrderedCollection",
+		},
+		First:      accountRoot + "/" + collType + "?page=1",
+		TotalItems: items,
+	}
+	return &oc
+}
+
+type OrderedCollectionPage struct {
+	BaseObject
+	TotalItems   int           `json:"totalItems"`
+	PartOf       string        `json:"partOf"`
+	Next         string        `json:"next,omitempty"`
+	Prev         string        `json:"prev,omitempty"`
+	OrderedItems []interface{} `json:"orderedItems,omitempty"`
+}
+
+func NewOrderedCollectionPage(accountRoot, collType string, items, page int) *OrderedCollectionPage {
+	ocp := OrderedCollectionPage{
+		BaseObject: BaseObject{
+			Context: []interface{}{
+				Namespace,
+			},
+			ID:   fmt.Sprintf("%s/%s?page=%d", accountRoot, collType, page),
+			Type: "OrderedCollectionPage",
+		},
+		TotalItems: items,
+		PartOf:     accountRoot + "/" + collType,
+		Next:       fmt.Sprintf("%s/%s?page=%d", accountRoot, collType, page+1),
+	}
+	return &ocp
+}