add:utils:file:store | create utility for store file in system

src/helpers/files/saveFile/index.ts

@@ -0,0 +1,26 @@
+import { mkdir, writeFile } from "fs/promises";
+import path from "path";
+import crypto from "crypto";
+import mime from "mime-types";
+
+interface SaveFileOptions {
+  folder: string;
+  prefix?: string;
+}
+
+export const saveFile = async (
+  file: File,
+  { folder, prefix }: SaveFileOptions
+): Promise<string> => {
+  const ext = mime.extension(file.type) || "bin";
+  const uniqueName = `${prefix ?? ""}${crypto.randomUUID()}.${ext}`;
+
+  const relativeFolder = path.join("uploads", folder);
+  const relativePath = path.join(relativeFolder, uniqueName);
+  const absolutePath = path.join(process.cwd(), relativePath);
+
+  await mkdir(path.dirname(absolutePath), { recursive: true });
+  await writeFile(absolutePath, Buffer.from(await file.arrayBuffer()));
+
+  return relativePath;
+};

src/helpers/files/saveFile/modules/saveAvatar.ts

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+import { saveFile } from "..";
+import { AppError } from "../../../error/instances/app";
+
+export const saveAvatar = async (file: File): Promise<string> => {
+  const allowedTypes = ["image/png", "image/jpeg", "image/webp"];
+  if (!allowedTypes.includes(file.type)) {
+    throw new AppError(
+      415,
+      "Unsupported Media Type. File must be in .jpg, .png, or .webp format"
+    );
+  }
+
+  return await saveFile(file, {
+    folder: "avatar",
+    prefix: "usr-",
+  });
+};