client/src/data/challengeCheck.js

   1 // TODO: rename file "timeControl.js" in utils/
   2 function timeUnitToSeconds(value, unit)
   3 {
   4   let seconds = value;
   5   switch (unit)
   6   {
   7     case 'd':
   8       seconds *= 24;
   9     case 'h':
  10       seconds *= 60;
  11     case 'm':
  12       seconds *= 60;
  13   }
  14   return seconds;
  15 }
  16
  17 function isLargerUnit(unit1, unit2)
  18 {
  19   return (unit1 == 'd' && unit2 != 'd')
  20     || (unit1 == 'h' && ['s','m'].includes(unit2))
  21     || (unit1 == 'm' && unit2 == 's');
  22 }
  23
  24 export function extractTime(timeControl)
  25 {
  26   const tcParts = timeControl.replace(/ /g,"").split('+');
  27     const mainTimeArray = tcParts[0].match(/([0-9]+)([smhd])/);
  28   if (!mainTimeArray)
  29     return null;
  30   const mainTimeValue = parseInt(mainTimeArray[1]);
  31   const mainTimeUnit = mainTimeArray[2];
  32   const mainTime = timeUnitToSeconds(mainTimeValue, mainTimeUnit);
  33   let increment = 0;
  34   if (tcParts.length >= 2)
  35   {
  36     const increment = tcParts[1].match(/([0-9]+)([smhd])/);
  37     if (!increment)
  38       return null;
  39     const incrementValue = parseInt(increment[1]);
  40     const incrementUnit = increment[2];
  41     // Increment unit cannot be larger than main unit:
  42     if (isLargerUnit(incrementUnit, mainTimeUnit))
  43       return null;
  44     increment = timeUnitToSeconds(incrementValue, incrementUnit);
  45   }
  46   return {mainTime:mainTime, increment:increment};
  47 }
  48
  49 // TODO: put this in Hall.vue
  50 export function checkChallenge(c)
  51 {
  52     const vid = parseInt(c.vid);
  53     if (isNaN(vid) || vid <= 0)
  54         return "Please select a variant";
  55
  56   const tc = extractTime(c.timeControl);
  57   if (!tc)
  58     return "Wrong time control";
  59
  60     // Basic alphanumeric check for players names
  61     let playerCount = 0;
  62     for (const pname of c.to)
  63     {
  64         if (pname.length > 0)
  65         {
  66       // TODO: slightly redundant (see data/userCheck.js)
  67             if (!pname.match(/^[\w]+$/))
  68                 return "Wrong characters in players names";
  69             playerCount++;
  70         }
  71     }
  72
  73     if (playerCount > 0 && playerCount != c.nbPlayers-1)
  74         return "None, or all of the opponent names must be filled"
  75
  76   // Allow custom FEN (and check it) only for individual challenges
  77   if (c.fen.length > 0 && playerCount > 0)
  78   {
  79     if (!V.IsGoodFen(c.fen))
  80       return "Bad FEN string";
  81   }
  82 }