initial code

src/utils/signer.ts

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+/* eslint-disable @typescript-eslint/no-explicit-any */
+
+import { v4 as uuidv4 } from "uuid";
+import CryptoJS from "crypto-js";
+import { ENV } from "../constants/env";
+
+/* =========================
+   HELPERS (COPY POSTMAN)
+========================= */
+
+export function parseQueryParamsManual(url: string) {
+  const result: Record<string, any> = {};
+  const queryStartIndex = url.indexOf("?");
+
+  if (queryStartIndex === -1 || queryStartIndex === url.length - 1) {
+    return result;
+  }
+
+  const queryString = url.substring(queryStartIndex + 1);
+  const pairs = queryString.split("&");
+
+  for (const pair of pairs) {
+    const parts = pair.split("=");
+
+    if (parts.length === 2) {
+      const key = decodeURIComponent(parts[0].replace(/\+/g, " "));
+      const value = decodeURIComponent(parts[1].replace(/\+/g, " "));
+      result[key] = value;
+    }
+  }
+
+  return result;
+}
+
+export function sortKeysDeep(obj: any): any {
+  if (Array.isArray(obj)) {
+    return obj.map(sortKeysDeep);
+  }
+
+  if (obj !== null && typeof obj === "object") {
+    return Object.keys(obj)
+      .sort()
+      .reduce((acc: any, key) => {
+        acc[key] = sortKeysDeep(obj[key]);
+        return acc;
+      }, {});
+  }
+
+  return obj;
+}
+
+/* =========================
+   SIGNATURE
+========================= */
+
+export interface SignatureResult {
+  timestamp: number;
+  nonce: string;
+  signature: string;
+}
+
+export function generateSignature(rawBody: any): SignatureResult {
+  const timestamp = Math.floor(Date.now() / 1000);
+  const nonce = uuidv4();
+
+  const body = sortKeysDeep(rawBody ?? {});
+
+  const payload = JSON.stringify({
+    timestamp,
+    nonce,
+    body: JSON.stringify(body), // ⚠️ STRINGIFY GANDA (WAJIB)
+  });
+
+  const hash = CryptoJS.HmacSHA256(payload, ENV.secretKey);
+
+  return {
+    timestamp,
+    nonce,
+    signature: CryptoJS.enc.Hex.stringify(hash),
+  };
+}