Separate client and server codes. Keep everything in one git repo for simplicity

[vchess.git] / server / data / challengeCheck.js

diff --git a/server/data/challengeCheck.js b/server/data/challengeCheck.js
new file mode 100644 (file)
index 0000000..459396a
--- /dev/null
+++ b/server/data/challengeCheck.js
@@ -0,0 +1,34 @@
+function checkChallenge(c)
+{
+       const vid = parseInt(c.vid);
+       if (isNaN(vid) || vid <= 0)
+               return "Please select a variant";
+
+       const mainTime = parseInt(c.mainTime);
+       const increment = parseInt(c.increment);
+       if (isNaN(mainTime) || mainTime <= 0)
+               return "Main time should be strictly positive";
+       if (isNaN(increment) || increment < 0)
+               return "Increment must be positive";
+
+       // Basic alphanumeric check for players names
+       let playerCount = 0;
+       for (p of c.players)
+       {
+               if (p.name.length > 0)
+               {
+                       if (!p.name.match(/^[\w]+$/))
+                               return "Wrong characters in players names";
+                       playerCount++;
+               }
+       }
+
+       if (playerCount > 0 && playerCount != c.nbPlayers-1)
+               return "None, or all of the opponent names must be filled"
+
+       // Just characters check on server:
+       if (!c.fen.match(/^[a-zA-Z0-9, /-]*$/))
+               return "Bad FEN string";
+}
+
+module.exports = checkChallenge;