fix: nip96 bugs

packages/app/src/Utils/Upload/Nip96.ts

@@ -1,20 +1,23 @@
 import { base64 } from "@scure/base";
 import { throwIfOffline } from "@snort/shared";
 import { EventKind, EventPublisher } from "@snort/system";
-import { Uploader, UploadResult } from "Upload";
+
+import { Uploader, UploadResult } from ".";
 
 export class Nip96Uploader implements Uploader {
   constructor(
     readonly url: string,
     readonly publisher: EventPublisher,
-  ) {}
+  ) { }
 
   get progress() {
     return [];
   }
 
   async loadInfo() {
-    const rsp = await fetch(this.url);
+    const u = new URL(this.url);
+
+    const rsp = await fetch(`${u.protocol}//${u.host}/.well-known/nostr/nip96.json`);
     return (await rsp.json()) as Nip96Info;
   }
 
@@ -30,16 +33,20 @@ export class Nip96Uploader implements Uploader {
     const info = await this.loadInfo();
     const fd = new FormData();
     fd.append("size", file.size.toString());
-    fd.append("alt", filename);
+    fd.append("caption", filename);
     fd.append("media_type", file.type);
     fd.append("file", file);
 
-    const rsp = await fetch(info.api_url, {
+    let u = info.api_url;
+    if (u.startsWith("/")) {
+      u = `${this.url}${u.slice(1)}`;
+    }
+    const rsp = await fetch(u, {
       body: fd,
       method: "POST",
       headers: {
         accept: "application/json",
-        authorization: await auth(info.api_url, "POST"),
+        authorization: await auth(u, "POST"),
       },
     });
     if (rsp.ok) {