client/src/utils/timeControl.js

   1 function timeUnitToSeconds(value, unit)
   2 {
   3   let seconds = value;
   4   switch (unit)
   5   {
   6     case 'd':
   7       seconds *= 24;
   8     case 'h':
   9       seconds *= 60;
  10     case 'm':
  11       seconds *= 60;
  12   }
  13   return seconds;
  14 }
  15
  16 function isLargerUnit(unit1, unit2)
  17 {
  18   return (unit1 == 'd' && unit2 != 'd')
  19     || (unit1 == 'h' && ['s','m'].includes(unit2))
  20     || (unit1 == 'm' && unit2 == 's');
  21 }
  22
  23 export function extractTime(timeControl)
  24 {
  25   let tcParts = timeControl.replace(/ /g,"").split('+');
  26   // Concatenate usual time control suffixes, in case of none is provided
  27   tcParts[0] += "m";
  28   tcParts[1] += "s";
  29   const mainTimeArray = tcParts[0].match(/([0-9]+)([smhd]+)/);
  30   if (!mainTimeArray)
  31     return null;
  32   const mainTimeValue = parseInt(mainTimeArray[1]);
  33   const mainTimeUnit = mainTimeArray[2][0];
  34   const mainTime = timeUnitToSeconds(mainTimeValue, mainTimeUnit);
  35   let increment = 0;
  36   if (tcParts.length >= 2)
  37   {
  38     const incrementArray = tcParts[1].match(/([0-9]+)([smhd]+)/);
  39     if (!incrementArray)
  40       return null;
  41     const incrementValue = parseInt(incrementArray[1]);
  42     const incrementUnit = incrementArray[2][0];
  43     // Increment unit cannot be larger than main unit:
  44     if (isLargerUnit(incrementUnit, mainTimeUnit))
  45       return null;
  46     increment = timeUnitToSeconds(incrementValue, incrementUnit);
  47   }
  48   return {mainTime:mainTime, increment:increment};
  49 }