forked from shadowfacts/shadowfacts.net
102 lines
2.8 KiB
TypeScript
102 lines
2.8 KiB
TypeScript
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import { Router, Request, Response } from "express";
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import uuidv4 from "uuid/v4";
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import { fetchActor, signAndSend } from "./federate";
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import { Activity, Follow, Accept, Undo, Create, Note } from "./activity";
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import { Database } from "sqlite3";
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import { URL } from "url";
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const domain = process.env.DOMAIN;
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export default function inbox(): Router {
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const router = Router();
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router.post("/ap/inbox", handleInbox);
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router.post("/inbox", handleInbox);
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return router;
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}
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async function handleInbox(req: Request, res: Response) {
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console.log(req.body);
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const activity = req.body as Activity;
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if (activity.type === "Follow") {
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handleFollow(activity, req, res);
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} else if (activity.type === "Create") {
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handleCreate(activity, req, res);
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} else if (activity.type === "Undo") {
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handleUndo(activity, req, res);
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} else {
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res.end(); // TODO: handle this better
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}
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}
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async function handleFollow(activity: Activity, req: Request, res: Response) {
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if (typeof req.body.object !== "string") {
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res.end(); // TODO: handle this better
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return;
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}
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const follow = activity as Follow;
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if (follow.object !== `https://${domain}/ap/actor`) {
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res.end();
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return;
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}
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const actor = await fetchActor(follow.actor);
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const acceptObject = <Accept>{
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"@context": [
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"https://www.w3.org/ns/activitystreams",
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// "https://w3id.org/security/v1"
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],
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"id": `https://${domain}/ap/${uuidv4()}`,
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"type": "Accept",
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"actor": `https://${domain}/ap/actor`,
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"object": follow
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};
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signAndSend(acceptObject, actor.inbox);
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const db = req.app.get("db") as Database;
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const serverInbox = new URL("/inbox", actor.inbox).toString();
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db.run("INSERT OR IGNORE INTO followers(id, inbox) VALUES($id, $inbox)", {
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$id: actor.id,
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$inbox: serverInbox
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}, (err) => {
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if (err) console.error(`Encountered error adding follower ${follow.actor}`, err);
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});
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res.end();
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}
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async function handleCreate(activity: Activity, req: Request, res: Response) {
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const create = activity as Create;
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if (create.object.type == "Note") {
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handleCreateNote(create, req, res);
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} else {
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res.end();
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}
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}
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async function handleCreateNote(create: Create, req: Request, res: Response) {
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const note = create.object as Note;
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console.log(note);
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}
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async function handleUndo(activity: Activity, req: Request, res: Response) {
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const undo = activity as Undo;
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if (undo.object.type === "Follow") {
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handleUndoFollow(undo, req, res);
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} else {
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res.end();
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}
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}
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async function handleUndoFollow(undo: Undo, req: Request, res: Response) {
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const follow = undo.object as Follow;
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if (follow.object !== `https://${domain}/ap/actor`) {
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res.end();
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return;
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}
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const db = req.app.get("db") as Database;
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db.run("DELETE FROM followers WHERE id = $id", {
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$id: follow.actor
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}, (err) => {
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if (err) console.error(`Error unfollowing ${follow.actor}`, err);
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});
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res.end();
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}
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