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classes/activitypub.ts

@@ -0,0 +1,64 @@
+import { APActivity, APActor } from "activitypub-types";
+
+export class RemoteActor {
+	private actorData: APActor | null;
+	private actorUri: string;
+
+	constructor(actor: APActor | string) {
+		if (typeof actor === "string") {
+			this.actorUri = actor;
+			this.actorData = null;
+		} else {
+			this.actorUri = actor.id || "";
+			this.actorData = actor;
+		}
+	}
+
+	public async fetch() {
+		const response = await fetch(this.actorUri);
+		const actorJson = (await response.json()) as APActor;
+		this.actorData = actorJson;
+	}
+
+	public getData() {
+		return this.actorData;
+	}
+}
+
+export class RemoteActivity {
+	private data: APActivity | null;
+	private uri: string;
+
+	constructor(uri: string, data: APActivity | null) {
+		this.uri = uri;
+		this.data = data;
+	}
+
+	public async fetch() {
+		const response = await fetch(this.uri);
+		const json = (await response.json()) as APActivity;
+		this.data = json;
+	}
+
+	public getData() {
+		return this.data;
+	}
+
+	public async getActor() {
+		if (!this.data) {
+			throw new Error("No data");
+		}
+
+		if (Array.isArray(this.data.actor)) {
+			throw new Error("Multiple actors");
+		}
+
+		if (typeof this.data.actor === "string") {
+			const actor = new RemoteActor(this.data.actor);
+			await actor.fetch();
+			return actor.getData();
+		}
+
+		return new RemoteActor(this.data.actor as any);
+	}
+}