Files
SocialPub/PrivaPub/Federation/Rendering/ActivityPubRenderer.cs
T
thepraandClaude Opus 5.5 a3a66b6db2 Replies a post's author approves (FEP-5624), checked live with PeerTube
PeerTube puts canReply on a video whose comments wait for approval, and answers each comment with ApproveReply. A
persona's reply to such a post now waits (privapub.approval: pending), its Create going to the author alone; the
author's ApproveReply, signed by the author and naming the post answered, lets it out to its audience with
replyApproval, and RejectReply leaves it ours. A null canReply (PeerTube's open comments) says nothing; an empty one
refuses. The PeerTube scenario holds a comment for review and approves it through PeerTube's API (28 checks).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LsXgEaXee4GCU1hwYgPJXw
2026-10-06 16:16:34 +02:00

513 lines
22 KiB
C#

using Markdig;
using PrivaPub.Federation.Actors;
using PrivaPub.Federation.Objects;
using PrivaPub.Models.Federation;
using PrivaPub.Models.Post;
using System.Globalization;
using System.Net;
using System.Text.Json.Nodes;
using PostEntity = PrivaPub.Models.Post.Post;
namespace PrivaPub.Federation.Rendering
{
public static class ActivityPubRenderer
{
public const string ActivityStreams = "https://www.w3.org/ns/activitystreams";
public const string Public = Addressing.Public;
public const string ContentWarning = "Content warning";
static readonly MarkdownPipeline Pipeline = new MarkdownPipelineBuilder().DisableHtml().Build();
public static JsonArray Context() => new(
ActivityStreams,
"https://w3id.org/security/v1",
new JsonObject
{
["manuallyApprovesFollowers"] = "as:manuallyApprovesFollowers",
["sensitive"] = "as:sensitive",
["Hashtag"] = "as:Hashtag",
["alsoKnownAs"] = new JsonObject { ["@id"] = "as:alsoKnownAs", ["@type"] = "@id" },
["movedTo"] = new JsonObject { ["@id"] = "as:movedTo", ["@type"] = "@id" },
["toot"] = "http://joinmastodon.org/ns#",
["featured"] = new JsonObject { ["@id"] = "toot:featured", ["@type"] = "@id" },
["featuredTags"] = new JsonObject { ["@id"] = "toot:featuredTags", ["@type"] = "@id" },
["discoverable"] = "toot:discoverable",
["indexable"] = "toot:indexable",
["blurhash"] = "toot:blurhash",
["votersCount"] = "toot:votersCount",
["Emoji"] = "toot:Emoji",
["quote"] = new JsonObject { ["@id"] = "https://w3id.org/fep/044f#quote", ["@type"] = "@id" },
["quoteAuthorization"] = new JsonObject { ["@id"] = "https://w3id.org/fep/044f#quoteAuthorization", ["@type"] = "@id" },
["QuoteRequest"] = "https://w3id.org/fep/044f#QuoteRequest",
["QuoteAuthorization"] = "https://w3id.org/fep/044f#QuoteAuthorization",
["interactingObject"] = new JsonObject { ["@id"] = "gts:interactingObject", ["@type"] = "@id" },
["interactionTarget"] = new JsonObject { ["@id"] = "gts:interactionTarget", ["@type"] = "@id" },
["misskey"] = "https://misskey-hub.net/ns#",
["_misskey_quote"] = "misskey:_misskey_quote",
["fedibird"] = "http://fedibird.com/ns#",
["quoteUri"] = "fedibird:quoteUri",
["quoteUrl"] = "as:quoteUrl",
["gts"] = "https://gotosocial.org/ns#",
["interactionPolicy"] = new JsonObject { ["@id"] = "gts:interactionPolicy", ["@type"] = "@id" },
["canQuote"] = new JsonObject { ["@id"] = "gts:canQuote", ["@type"] = "@id" },
["automaticApproval"] = new JsonObject { ["@id"] = "gts:automaticApproval", ["@type"] = "@id" },
["manualApproval"] = new JsonObject { ["@id"] = "gts:manualApproval", ["@type"] = "@id" },
["LikeRequest"] = "gts:LikeRequest",
["ReplyRequest"] = "gts:ReplyRequest",
["AnnounceRequest"] = "gts:AnnounceRequest",
["LikeAuthorization"] = "gts:LikeApproval",
["ReplyAuthorization"] = "gts:ReplyAuthorization",
["AnnounceAuthorization"] = "gts:AnnounceAuthorization",
["likeAuthorization"] = new JsonObject { ["@id"] = "gts:likeAuthorization", ["@type"] = "@id" },
["replyAuthorization"] = new JsonObject { ["@id"] = "gts:replyAuthorization", ["@type"] = "@id" },
["replyApproval"] = new JsonObject { ["@id"] = "toot:replyApproval", ["@type"] = "@id" },
["announceAuthorization"] = new JsonObject { ["@id"] = "gts:announceAuthorization", ["@type"] = "@id" },
["litepub"] = "http://litepub.social/ns#",
["EmojiReact"] = "litepub:EmojiReact",
["focalPoint"] = new JsonObject { ["@container"] = "@list", ["@id"] = "toot:focalPoint" },
["schema"] = "http://schema.org#",
["PropertyValue"] = "schema:PropertyValue",
["value"] = "schema:value",
["webfinger"] = "https://purl.archive.org/socialweb/webfinger#webfinger",
["lemmy"] = "https://join-lemmy.org/ns#",
["postingRestrictedToMods"] = "lemmy:postingRestrictedToMods",
// Smithereen's, which it compacts what it reads by: an allowedTo stays a plain string, as it reads them
["sm"] = "http://smithereen.software/ns#",
["wall"] = new JsonObject { ["@id"] = "sm:wall", ["@type"] = "@id" },
["privacySettings"] = "sm:privacySettings",
["wallPosting"] = "sm:wallPosting",
["wallPostVisibility"] = "sm:wallPostVisibility",
["allowedTo"] = "sm:allowedTo",
// FEP-521a keys and FEP-8b32 proofs, defined here rather than by the data-integrity and multikey contexts,
// which strict JSON-LD readers would have to fetch. JSON-LD 1.0 only: Smithereen's reader refuses the whole
// document over a 1.1 term (proof's @graph container there; our proofs are canonicalised as JSON, by JCS)
["assertionMethod"] = new JsonObject { ["@id"] = "sec:assertionMethod", ["@type"] = "@id", ["@container"] = "@set" },
["Multikey"] = "sec:Multikey",
["controller"] = new JsonObject { ["@id"] = "sec:controller", ["@type"] = "@id" },
["publicKeyMultibase"] = new JsonObject { ["@id"] = "sec:publicKeyMultibase", ["@type"] = "sec:multibase" },
["DataIntegrityProof"] = "sec:DataIntegrityProof",
["proof"] = new JsonObject { ["@id"] = "sec:proof", ["@type"] = "@id" },
["cryptosuite"] = new JsonObject { ["@id"] = "sec:cryptosuite", ["@type"] = "sec:cryptosuiteString" },
["proofValue"] = new JsonObject { ["@id"] = "sec:proofValue", ["@type"] = "sec:multibase" },
["proofPurpose"] = new JsonObject { ["@id"] = "sec:proofPurpose", ["@type"] = "@vocab" },
["verificationMethod"] = new JsonObject { ["@id"] = "sec:verificationMethod", ["@type"] = "@id" },
["implements"] = new JsonObject { ["@id"] = "https://w3id.org/fep/844e/implements", ["@type"] = "@id", ["@container"] = "@set" }
});
// what PrivaPub reads that a sender cannot tell from our documents (FEP-844e): RFC 9421 signatures, with RSA keys
static JsonArray Implements() => new(new JsonObject
{
["href"] = "https://datatracker.ietf.org/doc/html/rfc9421",
["name"] = "RFC-9421: HTTP Message Signatures"
});
public static string Html(string markdown) =>
string.IsNullOrEmpty(markdown) ? string.Empty : Markdown.ToHtml(markdown, Pipeline).Trim();
public static string Timestamp(DateTime value) =>
DateTime.SpecifyKind(value, DateTimeKind.Utc).ToString("yyyy-MM-ddTHH:mm:ss.fffZ", CultureInfo.InvariantCulture);
public static string Day(DateTime value) =>
DateTime.SpecifyKind(value, DateTimeKind.Utc).Date.ToString("yyyy-MM-ddT00:00:00Z", CultureInfo.InvariantCulture);
public static string TagUrl(string baseAddress, string tag) => $"{baseAddress}/tags/{Uri.EscapeDataString(tag)}";
public static JsonObject Actor(LocalActor actor)
{
var document = new JsonObject
{
["@context"] = Context(),
["id"] = actor.Uri,
["type"] = actor.Kind switch
{
LocalActorKind.Group => "Group",
LocalActorKind.Application => "Application",
_ when actor.IsBot => "Service",
_ => "Person"
},
["preferredUsername"] = actor.UserName,
["name"] = actor.Name,
["summary"] = Html(actor.Summary),
["url"] = actor.Kind == LocalActorKind.Application ? actor.Uri : actor.HtmlUrl,
["inbox"] = actor.Inbox,
["outbox"] = actor.Outbox,
["followers"] = actor.Followers,
["following"] = actor.Following,
["featured"] = actor.Featured,
["featuredTags"] = actor.FeaturedTags,
["published"] = Day(actor.Published),
["manuallyApprovesFollowers"] = actor.ManuallyApprovesFollowers,
["discoverable"] = actor.Discoverable,
["indexable"] = actor.Indexable,
["webfinger"] = actor.Handle,
["endpoints"] = new JsonObject { ["sharedInbox"] = actor.SharedInbox },
["publicKey"] = new JsonObject
{
["id"] = actor.KeyId,
["owner"] = actor.Uri,
["publicKeyPem"] = Keys.ToSubjectPublicKeyInfoPem(actor.PublicKeyPem)
},
["attachment"] = new JsonArray(actor.Fields.Select(field => (JsonNode)new JsonObject
{
["type"] = "PropertyValue",
["name"] = field.Key,
["value"] = FieldValue(field.Value)
}).ToArray())
};
// a persona's wall (FEP-400e, owner decision 2026-10-06): its followers write on it, everyone reads it
if (actor.HasWall)
{
document["wall"] = actor.Wall;
document["privacySettings"] = new JsonObject
{
["wallPosting"] = new JsonObject { ["allowedTo"] = new JsonArray(actor.Followers) },
["wallPostVisibility"] = new JsonObject { ["allowedTo"] = new JsonArray(Public) }
};
}
if (actor is { Kind: LocalActorKind.Group, IsCircle: false })
{
document["attributedTo"] = actor.Wardens;
document["postingRestrictedToMods"] = actor.PostingRestrictedToModerators;
}
// what the server reads (FEP-844e): on the application actor itself, on any other as its generator
if (actor.Kind == LocalActorKind.Application)
document["implements"] = Implements();
else
document["generator"] = new JsonObject { ["type"] = "Application", ["implements"] = Implements() };
// its Ed25519 key (FEP-521a), which signs the proofs its activities carry (FEP-8b32)
if (!string.IsNullOrEmpty(actor.SigningKey))
document["assertionMethod"] = new JsonArray(new JsonObject
{
["id"] = actor.AssertionKeyId,
["type"] = "Multikey",
["controller"] = actor.Uri,
["publicKeyMultibase"] = Signing.IntegrityProofs.Multikey(Signing.IntegrityProofs.PublicKey(actor.SigningKey))
});
if (!string.IsNullOrEmpty(actor.PictureURL))
document["icon"] = new JsonObject { ["type"] = "Image", ["url"] = actor.PictureURL };
if (!string.IsNullOrEmpty(actor.ThumbnailURL))
document["image"] = new JsonObject { ["type"] = "Image", ["url"] = actor.ThumbnailURL };
return document;
}
public static JsonObject Note(PostEntity post, LocalActor author, LocalActor group, string inReplyTo)
{
var mentions = post.Mentions.Select(m => (JsonNode)m.ActorURI).ToArray();
var (to, cc) = post.Visibility switch
{
PostVisibility.Circle when group != default => (new JsonArray(group.Uri, group.Flock), new JsonArray(mentions)),
PostVisibility.Unlisted => (new JsonArray(author.Followers), new JsonArray(mentions.Prepend(Public).ToArray())),
// Pleroma and Akkoma call a post private only if a `to` contains "/followers" or its cc is not empty, and ours
// are /groupies: with an empty cc every followers-only post would be a DM there. Naming them again says nothing new.
PostVisibility.FollowersOnly => (new JsonArray(author.Followers), new JsonArray(mentions.Append(author.Followers).ToArray())),
PostVisibility.Direct => (new JsonArray(mentions), new JsonArray()),
_ => (new JsonArray(Public), new JsonArray(mentions.Prepend(author.Followers).ToArray()))
};
if (group is { IsCircle: false })
cc.Add(group.Uri);
// a public reply names the author it answers in cc even when the @name was deleted from its text, as Pleroma does:
// GoToSocial keeps only what is addressed to someone there, and the reply already says whom it answers
if (post.Visibility is PostVisibility.Public or PostVisibility.Unlisted && !string.IsNullOrEmpty(post.InReplyToActorURI)
&& !mentions.Any(m => m.GetValue<string>() == post.InReplyToActorURI))
cc.Add(post.InReplyToActorURI);
var note = NoteBody(post, author, to, cc, inReplyTo);
// a public thread names where its replies and its whole conversation are read (owner decision 2026-10-06):
// Mastodon, GoToSocial and Fedify complete threads from them
if (!post.IsFederatedCopy && group == default && !post.IsLocalOnly && post.Visibility is PostVisibility.Public or PostVisibility.Unlisted)
{
note["replies"] = author.PostUri(post.ID) + "/replies";
if (!string.IsNullOrEmpty(post.ContextURI))
note["context"] = post.ContextURI;
}
if (group != default)
note["audience"] = group.Uri;
else if (!string.IsNullOrEmpty(post.AudienceURI))
note["audience"] = post.AudienceURI;
if (group is { IsCircle: false } && string.IsNullOrEmpty(inReplyTo))
{
note["type"] = "Page";
note["name"] = post.Title ?? Headline(post);
}
return note;
}
public static JsonObject DirectNote(PostEntity post, LocalActor author, IReadOnlyList<(string Uri, string Handle)> recipients,
string context)
{
var note = NoteBody(post, author, new JsonArray(recipients.Select(r => (JsonNode)r.Uri).ToArray()), new JsonArray(), post.InReplyToURI);
var named = post.Mentions.Select(m => m.ActorURI).ToHashSet();
var tags = note["tag"]!.AsArray();
foreach (var recipient in recipients.Where(r => !named.Contains(r.Uri)))
tags.Add(new JsonObject { ["type"] = "Mention", ["href"] = recipient.Uri, ["name"] = "@" + recipient.Handle });
var unmentioned = recipients.Where(r => !named.Contains(r.Uri)).ToList();
// a ChatMessage (Pleroma's, which Lemmy 0.19 and Mbin take as their private messages) has one recipient and no
// mention of them in its text
if (post.AsChatMessage)
{
note["type"] = "ChatMessage";
note.Remove("cc");
}
else if (unmentioned.Count > 0)
note["content"] = "<p>" + string.Join(" ", unmentioned.Select(r =>
$"<span class=\"h-card\" translate=\"no\"><a href=\"{WebUtility.HtmlEncode(r.Uri)}\" class=\"u-url mention\">@<span>{WebUtility.HtmlEncode(r.Handle.Split('@')[0])}</span></a></span>"))
+ "</p>" + note["content"]!.GetValue<string>();
if (!string.IsNullOrEmpty(context))
note["context"] = context;
return note;
}
public static JsonObject UpdateOf(PostEntity post, LocalActor author, LocalActor group, string reason)
{
var note = post.Visibility == PostVisibility.Direct
? DirectNote(post, author, Array.Empty<(string, string)>(), post.ContextURI)
: Note(post, author, group, post.InReplyToURI);
note["to"] = new JsonArray(post.To.Select(t => (JsonNode)t).ToArray());
note["cc"] = new JsonArray(post.Cc.Select(c => (JsonNode)c).ToArray());
return new JsonObject
{
["@context"] = Context(),
["id"] = author.ActivityUri($"update-{post.ID}-{reason}"),
["type"] = "Update",
["actor"] = author.Uri,
["to"] = note["to"]!.DeepClone(),
["cc"] = note["cc"]!.DeepClone(),
["object"] = note
};
}
public static string QuotableBy(PostEntity post) =>
post.Visibility is PostVisibility.Public or PostVisibility.Unlisted ? post.LocalQuotePolicy ?? Models.User.QuotePolicies.Nobody : Models.User.QuotePolicies.Nobody;
static void AddQuote(JsonObject note, PostEntity post, ref string content)
{
if (string.IsNullOrEmpty(post.QuoteURI))
return;
var link = WebUtility.HtmlEncode(post.QuoteURI);
content += $"<p class=\"quote-inline\">RE: <a href=\"{link}\">{link}</a></p>";
if (post.QuoteByConsent)
note["quote"] = post.QuoteURI;
if (!string.IsNullOrEmpty(post.QuoteAuthorizationURI))
note["quoteAuthorization"] = post.QuoteAuthorizationURI;
note["_misskey_quote"] = post.QuoteURI;
note["quoteUri"] = post.QuoteURI;
note["quoteUrl"] = post.QuoteURI;
(note["tag"] as JsonArray)?.Add(new JsonObject
{
["type"] = "Link",
["mediaType"] = "application/ld+json; profile=\"https://www.w3.org/ns/activitystreams\"",
["href"] = post.QuoteURI,
["name"] = $"RE: {post.QuoteURI}"
});
}
static void AddPoll(JsonObject note, PostPoll poll)
{
note["type"] = "Question";
note[poll.Multiple ? "anyOf" : "oneOf"] = new JsonArray(poll.Options.Select(option => (JsonNode)new JsonObject
{
["type"] = "Note",
["name"] = option.Title,
["replies"] = new JsonObject { ["type"] = "Collection", ["totalItems"] = option.Votes }
}).ToArray());
if (poll.ExpiresAt is { } ends)
note["endTime"] = Timestamp(ends);
if (poll.ClosedAt is { } closed)
note["closed"] = Timestamp(closed);
if (poll.VotersCount is { } voters)
note["votersCount"] = voters;
}
static string Headline(PostEntity post)
{
var text = System.Text.RegularExpressions.Regex.Replace(post.ContentHtml ?? post.Text ?? string.Empty, "<[^>]+>", " ");
text = WebUtility.HtmlDecode(System.Text.RegularExpressions.Regex.Replace(text, "\\s+", " ")).Trim();
return text.Length <= 100 ? text : text[..97] + "...";
}
static JsonObject NoteBody(PostEntity post, LocalActor author, JsonArray to, JsonArray cc, string inReplyTo)
{
var content = post.ContentHtml ?? Html(post.Text);
if (!string.IsNullOrEmpty(post.Title))
content = $"<p><strong>{WebUtility.HtmlEncode(post.Title)}</strong></p>{content}";
var note = new JsonObject
{
["id"] = author.PostUri(post.ID),
["type"] = "Note",
["attributedTo"] = author.Uri,
["content"] = content,
["published"] = Timestamp(post.CreationDate),
["url"] = author.PostHtmlUrl(post.ID),
["to"] = to,
["cc"] = cc,
["sensitive"] = post.HasContentWarning,
["tag"] = new JsonArray(post.Mentions
.Select(m => (JsonNode)new JsonObject { ["type"] = "Mention", ["href"] = m.ActorURI, ["name"] = MentionName(m) })
.Concat(post.Tags.Select(t => (JsonNode)new JsonObject
{
["type"] = "Hashtag",
["href"] = TagUrl(author.BaseAddress, t),
["name"] = "#" + t
}))
.ToArray())
};
AddQuote(note, post, ref content);
if (!post.IsFederatedCopy)
note["interactionPolicy"] = new JsonObject
{
["canQuote"] = new JsonObject
{
["automaticApproval"] = new JsonArray((JsonNode)(QuotableBy(post) switch
{
Models.User.QuotePolicies.Public => Objects.Addressing.Public,
Models.User.QuotePolicies.Followers => author.Followers,
_ => author.Uri
}))
}
};
note["content"] = content;
if (!string.IsNullOrEmpty(post.Language))
note["contentMap"] = new JsonObject { [post.Language] = content };
if (post.Poll is { } poll)
AddPoll(note, poll);
var attachments = post.Media.Where(m => !string.IsNullOrEmpty(m.URL)).Select(m =>
{
var attachment = new JsonObject
{
["type"] = "Document",
["mediaType"] = m.ContentType,
["url"] = m.URL,
["name"] = m.Description
};
if (!string.IsNullOrEmpty(m.Blurhash))
attachment["blurhash"] = m.Blurhash;
if (m.Focus is { Length: 2 })
attachment["focalPoint"] = new JsonArray(m.Focus[0], m.Focus[1]);
if (m.Width.HasValue && m.Height.HasValue)
{
attachment["width"] = m.Width;
attachment["height"] = m.Height;
}
return (JsonNode)attachment;
}).ToArray();
if (attachments.Length > 0)
note["attachment"] = new JsonArray(attachments);
if (!string.IsNullOrEmpty(post.Title))
note["name"] = post.Title;
var summary = post.SpoilerText ?? (post.HasContentWarning ? post.Title ?? ContentWarning : default);
if (!string.IsNullOrEmpty(summary))
{
note["summary"] = summary;
note["sensitive"] = true;
}
if (!string.IsNullOrEmpty(inReplyTo))
note["inReplyTo"] = inReplyTo;
// the parent's author let this reply in (GoToSocial's interaction policies)
if (!string.IsNullOrEmpty(inReplyTo) && !string.IsNullOrEmpty(post.ApprovalURI))
note["replyAuthorization"] = post.ApprovalURI;
if (!string.IsNullOrEmpty(inReplyTo) && !string.IsNullOrEmpty(post.ReplyApprovalURI))
note["replyApproval"] = post.ReplyApprovalURI;
if (post.EditedAt.HasValue)
note["updated"] = Timestamp(post.EditedAt.Value);
return note;
}
static string MentionName(PostMention mention)
{
var handle = mention.Handle?.TrimStart('@');
if (string.IsNullOrEmpty(handle))
return "@" + mention.ActorURI;
return "@" + (handle.Contains('@') ? handle : $"{handle}@{new Uri(mention.ActorURI).Authority}");
}
public static string FieldValue(string value)
{
var encoded = WebUtility.HtmlEncode(value ?? string.Empty);
return Uri.TryCreate(value, UriKind.Absolute, out var link) && link.Scheme is "https" or "http"
? $"<a href=\"{encoded}\" target=\"_blank\" rel=\"nofollow noopener noreferrer me\" translate=\"no\">{encoded}</a>"
: encoded;
}
public static JsonObject Create(LocalActor actor, JsonObject note, string activityId) => new()
{
["@context"] = Context(),
["id"] = actor.ActivityUri(activityId),
["type"] = "Create",
["actor"] = actor.Uri,
["published"] = note["published"]?.DeepClone(),
["to"] = note["to"]?.DeepClone(),
["cc"] = note["cc"]?.DeepClone(),
["object"] = note
};
public static JsonObject Announce(LocalActor group, string objectUri, string activityId, DateTime? published = default) => new()
{
["@context"] = ActivityStreams,
["id"] = group.ActivityUri(activityId),
["type"] = "Announce",
["actor"] = group.Uri,
["published"] = Timestamp(published ?? DateTime.UtcNow),
["to"] = new JsonArray(Public),
["cc"] = new JsonArray(group.Followers),
["object"] = objectUri
};
public static JsonObject Delete(LocalActor actor, string objectUri, string activityId, JsonArray to, JsonArray cc) => new()
{
["@context"] = ActivityStreams,
["id"] = actor.ActivityUri(activityId),
["type"] = "Delete",
["actor"] = actor.Uri,
["to"] = to,
["cc"] = cc,
["object"] = new JsonObject { ["id"] = objectUri, ["type"] = "Tombstone" }
};
public static JsonObject Accept(LocalActor actor, JsonNode follow, string activityId) => new()
{
["@context"] = ActivityStreams,
["id"] = actor.ActivityUri(activityId),
["type"] = "Accept",
["actor"] = actor.Uri,
["object"] = follow.DeepClone()
};
public static JsonObject OrderedCollection(string id, int totalItems, IEnumerable<JsonNode> items, string first = default)
{
var collection = new JsonObject
{
["@context"] = ActivityStreams,
["id"] = id,
["type"] = "OrderedCollection",
["totalItems"] = totalItems
};
if (first != default)
collection["first"] = first;
if (items != default)
collection["orderedItems"] = new JsonArray(items.ToArray());
return collection;
}
public static JsonObject OrderedCollectionPage(string id, string partOf, IEnumerable<JsonNode> items, string next, string prev)
{
var page = new JsonObject
{
["@context"] = Context(),
["id"] = id,
["type"] = "OrderedCollectionPage",
["partOf"] = partOf,
["orderedItems"] = new JsonArray(items.ToArray())
};
if (next != default)
page["next"] = next;
if (prev != default)
page["prev"] = prev;
return page;
}
}
}