refactor: ♻️ Store instance federation protocol in database, refactor fetcher

classes/functions/instance.ts

@@ -1,51 +0,0 @@
-import type { ServerMetadata } from "@lysand-org/federation/types";
-import { db } from "~/drizzle/db";
-import { Instances } from "~/drizzle/schema";
-import { config } from "~/packages/config-manager";
-
-/**
- * Represents an instance in the database.
- */
-
-/**
- * Adds an instance to the database if it doesn't already exist.
- * @param url
- * @returns Either the database instance if it already exists, or a newly created instance.
- */
-export const addInstanceIfNotExists = async (url: string) => {
-    const origin = new URL(url).origin;
-    const host = new URL(url).host;
-
-    const found = await db.query.Instances.findFirst({
-        where: (instance, { eq }) => eq(instance.baseUrl, host),
-    });
-
-    if (found) {
-        return found;
-    }
-
-    // Fetch the instance configuration
-    const metadata = (await fetch(new URL("/.well-known/lysand", origin), {
-        proxy: config.http.proxy.address,
-    }).then((res) => res.json())) as ServerMetadata;
-
-    if (metadata.type !== "ServerMetadata") {
-        throw new Error("Invalid instance metadata (wrong type)");
-    }
-
-    if (!(metadata.name && metadata.version)) {
-        throw new Error("Invalid instance metadata (missing name or version)");
-    }
-
-    return (
-        await db
-            .insert(Instances)
-            .values({
-                baseUrl: host,
-                name: metadata.name,
-                version: metadata.version,
-                logo: metadata.logo,
-            })
-            .returning()
-    )[0];
-};