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a tool for shared writing and social publishing
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TypeScript
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165import { Hono, HonoRequest } from "hono";import { serve } from "@hono/node-server";import { DidResolver } from "@atproto/identity";import { parseReqNsid, verifyJwt } from "@atproto/xrpc-server";import { supabaseServerClient } from "supabase/serverClient";import { normalizeDocumentRecord, type NormalizedDocument,} from "src/utils/normalizeRecords";import { inngest } from "app/api/inngest/client";import { AtUri } from "@atproto/api";
const app = new Hono();
const domain = process.env.FEED_SERVICE_URL || "feeds.leaflet.pub";const serviceDid = `did:web:${domain}`;
app.get("/.well-known/did.json", (c) => { return c.json({ "@context": ["https://www.w3.org/ns/did/v1"], id: serviceDid, service: [ { id: "#bsky_fg", type: "BskyFeedGenerator", serviceEndpoint: `https://${domain}`, }, ], });});//Cursor format ts::uri
app.get("/xrpc/app.bsky.feed.getFeedSkeleton", async (c) => { let auth = await validateAuth(c.req, serviceDid); let feed = c.req.query("feed"); if (!auth || !feed) return c.json({ feed: [] }); let cursor = c.req.query("cursor"); let parsedCursor; if (cursor) { let date = cursor.split("::")[0]; let uri = cursor.split("::")[1]; parsedCursor = { date, uri }; } let limit = parseInt(c.req.query("limit") || "10"); let feedAtURI = new AtUri(feed); let posts; let query; if (feedAtURI.rkey == "bsky-leaflet-quotes") { let query = supabaseServerClient .from("document_mentions_in_bsky") .select("*") .order("indexed_at", { ascending: false }) .order("uri", { ascending: false }) .limit(25); if (parsedCursor) query = query.or( `indexed_at.lt.${parsedCursor.date},and(indexed_at.eq.${parsedCursor.date},uri.lt.${parsedCursor.uri})`, );
let { data, error } = await query; let posts = data || [];
let lastPost = posts[posts.length - 1]; let newCursor = lastPost ? `${lastPost.indexed_at}::${lastPost.uri}` : null; return c.json({ cursor: newCursor || cursor, feed: posts.flatMap((p) => { return { post: p.uri }; }), }); } if (feedAtURI.rkey === "bsky-follows-leaflets") { if (!cursor) { console.log("Sending event"); await inngest.send({ name: "feeds/index-follows", data: { did: auth } }); } query = supabaseServerClient .from("documents") .select( `*, documents_in_publications!inner( publications!inner(*, identities!publications_identity_did_fkey!inner( bsky_follows!bsky_follows_follows_fkey!inner(*) ) ) )`, ) .eq( "documents_in_publications.publications.identities.bsky_follows.identity", auth, ); } else if (feedAtURI.rkey === "all-leaflets") { query = supabaseServerClient .from("documents") .select( `*, documents_in_publications(publications(*))`, ) .or( "record->preferences->showInDiscover.is.null,record->preferences->>showInDiscover.eq.true", { referencedTable: "documents_in_publications.publications" }, ); } else { //the default subscription feed query = supabaseServerClient .from("documents") .select( `*, documents_in_publications!inner(publications!inner(*, publication_subscriptions!inner(*)))`, ) .eq( "documents_in_publications.publications.publication_subscriptions.identity", auth, ); } query = query .eq("indexed", true) .or("data->postRef.not.is.null,data->bskyPostRef.not.is.null") .order("sort_date", { ascending: false }) .order("uri", { ascending: false }) .limit(25); if (parsedCursor) query = query.or( `sort_date.lt.${parsedCursor.date},and(sort_date.eq.${parsedCursor.date},uri.lt.${parsedCursor.uri})`, );
let { data, error } = await query; console.log(error); posts = data;
posts = posts || [];
let lastPost = posts[posts.length - 1]; let newCursor = lastPost ? `${lastPost.sort_date}::${lastPost.uri}` : null; return c.json({ cursor: newCursor || cursor, feed: posts.flatMap((p) => { if (!p.data) return []; const normalizedDoc = normalizeDocumentRecord(p.data, p.uri); if (!normalizedDoc?.bskyPostRef) return []; return { post: normalizedDoc.bskyPostRef.uri }; }), });});
const didResolver = new DidResolver({});const validateAuth = async ( req: HonoRequest, serviceDid: string,): Promise<string | null> => { const authorization = req.header("authorization"); if (!authorization?.startsWith("Bearer ")) { return null; } const jwt = authorization.replace("Bearer ", "").trim(); const nsid = parseReqNsid({ url: req.path }); const parsed = await verifyJwt(jwt, serviceDid, nsid, async (did: string) => { return didResolver.resolveAtprotoKey(did); }); return parsed.iss;};
serve({ fetch: app.fetch, port: 3030 });