reorganize code into smaller files & dirs

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

@@ -0,0 +1,84 @@
+import { base64 } from "@scure/base";
+import { throwIfOffline } from "@snort/shared";
+import { EventPublisher, EventKind } from "@snort/system";
+import { UploadResult, Uploader } from "Upload";
+
+export class Nip96Uploader implements Uploader {
+  constructor(
+    readonly url: string,
+    readonly publisher: EventPublisher,
+  ) {}
+
+  get progress() {
+    return [];
+  }
+
+  async loadInfo() {
+    const rsp = await fetch(this.url);
+    return (await rsp.json()) as Nip96Info;
+  }
+
+  async upload(file: File | Blob, filename: string): Promise<UploadResult> {
+    throwIfOffline();
+    const auth = async (url: string, method: string) => {
+      const auth = await this.publisher.generic(eb => {
+        return eb.kind(EventKind.HttpAuthentication).tag(["u", url]).tag(["method", method]);
+      });
+      return `Nostr ${base64.encode(new TextEncoder().encode(JSON.stringify(auth)))}`;
+    };
+
+    const info = await this.loadInfo();
+    const fd = new FormData();
+    fd.append("size", file.size.toString());
+    fd.append("alt", filename);
+    fd.append("media_type", file.type);
+    fd.append("file", file);
+
+    const rsp = await fetch(info.api_url, {
+      body: fd,
+      method: "POST",
+      headers: {
+        accept: "application/json",
+        authorization: await auth(info.api_url, "POST"),
+      },
+    });
+    if (rsp.ok) {
+      throwIfOffline();
+      const data = (await rsp.json()) as Nip96Result;
+      if (data.status === "success") {
+        const dim = data.nip94_event.tags
+          .find(a => a[0] === "dim")
+          ?.at(1)
+          ?.split("x");
+        return {
+          url: data.nip94_event.tags.find(a => a[0] === "url")?.at(1),
+          metadata: {
+            width: dim?.at(0) ? Number(dim[0]) : undefined,
+            height: dim?.at(1) ? Number(dim[1]) : undefined,
+          },
+        };
+      }
+      return {
+        error: data.message,
+      };
+    }
+    return {
+      error: "Upload failed",
+    };
+  }
+}
+
+export interface Nip96Info {
+  api_url: string;
+  download_url?: string;
+}
+
+export interface Nip96Result {
+  status: string;
+  message: string;
+  processing_url?: string;
+  nip94_event: {
+    tags: Array<Array<string>>;
+    content: string;
+  };
+}