Add image upload and edit functions

src/utils/getImageBufferFromS3.ts

@@ -0,0 +1,22 @@
+import { s3 } from "@/lib/s3";
+import { GetObjectCommand } from "@aws-sdk/client-s3";
+import { Readable } from "stream";
+
+export async function getImageBufferFromS3(fileKey: string, fileType?: string): Promise<Buffer> {
+  // const type = fileType ? fileType.split("/")[1] : "webp";
+  
+  const command = new GetObjectCommand({
+    Bucket: "gaertan",
+    Key: `original/${fileKey}.${fileType}`,
+  });
+
+  const response = await s3.send(command);
+  const stream = response.Body as Readable;
+
+  const chunks: Uint8Array[] = [];
+  for await (const chunk of stream) {
+    chunks.push(chunk);
+  }
+
+  return Buffer.concat(chunks);
+}