feat(federation): ✨ Handle instances not existing

api/api/v1/accounts/lookup/index.ts

@@ -106,6 +106,13 @@ export default apiRoute((app) =>
         // Try to fetch it from database
         const instance = await Instance.resolveFromHost(instanceHost);
 
+        if (!instance) {
+            return context.json(
+                { error: `Instance ${instanceHost} not found` },
+                404,
+            );
+        }
+
         const account = await User.fromSql(
             and(
                 eq(Users.username, username),

classes/database/emoji.ts

@@ -29,6 +29,7 @@ export class Emoji extends BaseInterface<typeof Emojis, EmojiWithInstance> {
         visible_in_picker: z.boolean(),
         category: z.string().optional(),
         static_url: z.string(),
+        global: z.boolean(),
     });
 
     public static $type: EmojiWithInstance;

classes/database/instance.ts

@@ -319,7 +319,7 @@ export class Instance extends BaseInterface<typeof Instances> {
         }
     }
 
-    public static resolveFromHost(host: string): Promise<Instance> {
+    public static resolveFromHost(host: string): Promise<Instance | null> {
         if (host.startsWith("http")) {
             const url = new URL(host).host;
 
@@ -331,7 +331,7 @@ export class Instance extends BaseInterface<typeof Instances> {
         return Instance.resolve(url.origin);
     }
 
-    public static async resolve(url: string): Promise<Instance> {
+    public static async resolve(url: string): Promise<Instance | null> {
         const logger = getLogger(["federation", "resolvers"]);
         const host = new URL(url).host;
 
@@ -347,7 +347,7 @@ export class Instance extends BaseInterface<typeof Instances> {
 
         if (!output) {
             logger.error`Failed to resolve instance ${chalk.bold(host)}`;
-            throw new Error("Failed to resolve instance");
+            return null;
         }
 
         const { metadata, protocol } = output;

classes/database/user.ts

@@ -599,18 +599,26 @@ export class User extends BaseInterface<typeof Users, UserWithRelations> {
 
         const updated = await User.saveFromRemote(this.getUri());
 
+        if (!updated) {
+            throw new Error("Failed to update user from remote");
+        }
+
         this.data = updated.data;
 
         return this;
     }
 
-    public static async saveFromRemote(uri: string): Promise<User> {
+    public static async saveFromRemote(uri: string): Promise<User | null> {
         if (!URL.canParse(uri)) {
             throw new Error(`Invalid URI: ${uri}`);
         }
 
         const instance = await Instance.resolve(uri);
 
+        if (!instance) {
+            return null;
+        }
+
         if (instance.data.protocol === "versia") {
             return await User.saveFromVersia(uri, instance);
         }
@@ -636,12 +644,20 @@ export class User extends BaseInterface<typeof Users, UserWithRelations> {
     private static async saveFromVersia(
         uri: string,
         instance: Instance,
-    ): Promise<User> {
+    ): Promise<User | null> {
         const requester = await User.getFederationRequester();
-        const { data: json } = await requester.get<Partial<VersiaUser>>(uri, {
+        const output = await requester
+            .get<Partial<VersiaUser>>(uri, {
                 // @ts-expect-error Bun extension
                 proxy: config.http.proxy.address,
-        });
+            })
+            .catch(() => null);
+
+        if (!output) {
+            return null;
+        }
+
+        const { data: json } = output;
 
         const validator = new EntityValidator();
         const data = await validator.User(json);