client/src/data/challengeCheck.js

   1 import { extractTime } from "@/utils/timeControl";
   2
   3 export function checkChallenge(c) {
   4   const vid = parseInt(c.vid);
   5   if (isNaN(vid) || vid <= 0) return "Please select a variant";
   6
   7   const tc = extractTime(c.cadence);
   8   if (!tc) return "Wrong time control";
   9
  10   // Basic alphanumeric check for opponent name
  11   if (c.to) {
  12     // NOTE: slightly redundant (see data/userCheck.js)
  13     if (!c.to.match(/^[\w]+$/)) return "Wrong characters in opponent name";
  14   }
  15
  16   // Allow custom FEN (and check it) only for individual challenges
  17   if (c.fen.length > 0 && !!c.to) {
  18     if (!V.IsGoodFen(c.fen)) return "Bad FEN string";
  19   } else c.fen = "";
  20
  21   return "";
  22 }