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   const tcParts = timeControl.replace(/ /g,"").split('+');
  26     const mainTimeArray = tcParts[0].match(/([0-9]+)([smhd])/);
  27   if (!mainTimeArray)
  28     return null;
  29   const mainTimeValue = parseInt(mainTimeArray[1]);
  30   const mainTimeUnit = mainTimeArray[2];
  31   const mainTime = timeUnitToSeconds(mainTimeValue, mainTimeUnit);
  32   let increment = 0;
  33   if (tcParts.length >= 2)
  34   {
  35     const increment = tcParts[1].match(/([0-9]+)([smhd])/);
  36     if (!increment)
  37       return null;
  38     const incrementValue = parseInt(increment[1]);
  39     const incrementUnit = increment[2];
  40     // Increment unit cannot be larger than main unit:
  41     if (isLargerUnit(incrementUnit, mainTimeUnit))
  42       return null;
  43     increment = timeUnitToSeconds(incrementValue, incrementUnit);
  44   }
  45   return {mainTime:mainTime, increment:increment};
  46 }