How to upload file not use S3 Next js? Please, example

Question

file: course.router.ts /  import { CourseSchema } from "~/schema/post.schema";
import {
  createTRPCRouter,
  publicProcedure,
  protectedProcedure,
} from "~/server/api/trpc";
import formidable from "formidable";
import fs from "npm";

export const courseRouter = createTRPCRouter({
  create: protectedProcedure.input(CourseSchema).mutation(({ ctx, input }) = {
    //upload and save here
    input.file ////

// throw new TRPCError({ code: "INTERNALSERVERERROR" });
    return ctx.prisma.curse.create({
      data: {
        name: input.name,
        video: input.video,
        descriptionCurse: input.descriptionCurse,
      },
    });
  }),
});

How to upload file not use S3 Next js? Please, example

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