feat: universal upload

Implementation of a universal upload allowing for multiple storage backends
starting with `database` and `s3`.

Allows clients to put and retrieve files from either client or server using
a blend of client and server actions.

packages/lib/universal/upload/put-file.ts

@@ -0,0 +1,53 @@
+import { base64 } from '@scure/base';
+import { match } from 'ts-pattern';
+
+import { DocumentDataType } from '@documenso/prisma/client';
+
+import { createDocumentData } from '../../server-only/document-data/create-document-data';
+import { getPresignPostUrl } from './server-actions';
+
+type File = {
+  name: string;
+  type: string;
+  arrayBuffer: () => Promise<ArrayBuffer>;
+};
+
+export const putFile = async (file: File) => {
+  const { type, data } = await match(process.env.NEXT_PUBLIC_UPLOAD_TRANSPORT)
+    .with('s3', async () => putFileInS3(file))
+    .otherwise(async () => putFileInDatabase(file));
+
+  return await createDocumentData({ type, data });
+};
+
+const putFileInDatabase = async (file: File) => {
+  const contents = await file.arrayBuffer();
+
+  const binaryData = new Uint8Array(contents);
+
+  const asciiData = base64.encode(binaryData);
+
+  return {
+    type: DocumentDataType.BYTES_64,
+    data: asciiData,
+  };
+};
+
+const putFileInS3 = async (file: File) => {
+  const { url, key } = await getPresignPostUrl(file.name, file.type);
+
+  const body = await file.arrayBuffer();
+
+  await fetch(url, {
+    method: 'PUT',
+    headers: {
+      'Content-Type': 'application/octet-stream',
+    },
+    body,
+  });
+
+  return {
+    type: DocumentDataType.S3_PATH,
+    data: key,
+  };
+};