/* 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),
  };
}