import { Request } from "express";import { supabase_service } from "../supabase";import { logger } from "../../../src/lib/logger"; export async function createIdempotencyKey(req: Request): Promise<string> {  const idempotencyKey = req.headers["x-idempotency-key"] as string;  if (!idempotencyKey) {    throw new Error("No idempotency key provided in the request headers.");  }   const { data, error } = await supabase_service    .from("idempotency_keys")    .insert({ key: idempotencyKey });   if (error) {    logger.error(`Failed to create idempotency key: ${error}`);    throw error;  }   return idempotencyKey;}