workspace with decoupled nostr package

packages/app/src/Upload/VoidCat.ts

@@ -0,0 +1,72 @@
+import * as secp from "@noble/secp256k1";
+import { FileExtensionRegex, VoidCatHost } from "Const";
+import { UploadResult } from "Upload";
+
+/**
+ * Upload file to void.cat
+ * https://void.cat/swagger/index.html
+ */
+export default async function VoidCat(file: File | Blob, filename: string): Promise<UploadResult> {
+  const buf = await file.arrayBuffer();
+  const digest = await crypto.subtle.digest("SHA-256", buf);
+
+  const req = await fetch(`${VoidCatHost}/upload`, {
+    mode: "cors",
+    method: "POST",
+    body: buf,
+    headers: {
+      "Content-Type": "application/octet-stream",
+      "V-Content-Type": file.type,
+      "V-Filename": filename,
+      "V-Full-Digest": secp.utils.bytesToHex(new Uint8Array(digest)),
+      "V-Description": "Upload from https://snort.social",
+      "V-Strip-Metadata": "true",
+    },
+  });
+
+  if (req.ok) {
+    const rsp: VoidUploadResponse = await req.json();
+    if (rsp.ok) {
+      let ext = filename.match(FileExtensionRegex);
+      if (rsp.file?.metadata?.mimeType === "image/webp") {
+        ext = ["", "webp"];
+      }
+      return {
+        url: rsp.file?.metadata?.url ?? `${VoidCatHost}/d/${rsp.file?.id}${ext ? `.${ext[1]}` : ""}`,
+      };
+    } else {
+      return {
+        error: rsp.errorMessage,
+      };
+    }
+  }
+  return {
+    error: "Upload failed",
+  };
+}
+
+export type VoidUploadResponse = {
+  ok: boolean;
+  file?: VoidFile;
+  errorMessage?: string;
+};
+
+export type VoidFile = {
+  id: string;
+  metadata?: VoidFileMeta;
+};
+
+export type VoidFileMeta = {
+  version: number;
+  id: string;
+  name?: string;
+  size: number;
+  uploaded: Date;
+  description?: string;
+  mimeType?: string;
+  digest?: string;
+  url?: string;
+  expires?: Date;
+  storage?: string;
+  encryptionParams?: string;
+};