enigma-bbs/core/activitypub/activity.js

83 lines
2.2 KiB
JavaScript

const { WellKnownActivityTypes, WellKnownActivity } = require('./const');
const { recipientIdsFromObject } = require('./util');
const ActivityPubObject = require('./object');
const { getISOTimestampString } = require('../database');
module.exports = class Activity extends ActivityPubObject {
constructor(obj, withContext = ActivityPubObject.DefaultContext) {
super(obj, withContext);
}
static get ActivityTypes() {
return WellKnownActivityTypes;
}
static fromJsonString(s) {
const obj = ActivityPubObject.fromJsonString(s);
return new Activity(obj);
}
static makeFollow(webServer, localActor, remoteActor) {
return new Activity({
id: Activity.activityObjectId(webServer),
type: WellKnownActivity.Follow,
actor: localActor,
object: remoteActor.id,
});
}
// https://www.w3.org/TR/activitypub/#accept-activity-inbox
static makeAccept(webServer, localActor, followRequest) {
return new Activity({
id: Activity.activityObjectId(webServer),
type: WellKnownActivity.Accept,
actor: localActor,
object: followRequest, // previous request Activity
});
}
static makeCreate(webServer, actor, obj, context) {
const activity = new Activity(
{
id: Activity.activityObjectId(webServer),
to: obj.to,
type: WellKnownActivity.Create,
actor,
object: obj,
},
context
);
const copy = n => {
if (obj[n]) {
activity[n] = obj[n];
}
};
copy('to');
copy('cc');
// :TODO: Others?
return activity;
}
static makeTombstone(obj) {
const deleted = getISOTimestampString();
return new Activity({
id: obj.id,
type: WellKnownActivity.Tombstone,
deleted,
published: deleted,
updated: deleted,
});
}
recipientIds() {
return recipientIdsFromObject(this);
}
static activityObjectId(webServer) {
return ActivityPubObject.makeObjectId(webServer, 'activity');
}
};