All files / utils quarterUtilities.js

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const quarters = ["WINTER", "SPRING", "SUMMER", "FALL"];
 
const shortQuarters = ["W", "S", "M", "F"];
 
const qtrNumToQuarter = {
  1: "WINTER",
  2: "SPRING",
  3: "SUMMER",
  4: "FALL",
};
 
const yyyyqToQyy = (yyyyq) => {
  return `${shortQuarters[parseInt(yyyyq.charAt(4)) - 1]}${yyyyq.substring(
    2,
    4,
  )}`;
};
 
const qyyToYyyyq = (qyy) => {
  return `20${qyy.substring(1, 3)}${shortQuarters.indexOf(qyy.charAt(0)) + 1}`;
};
 
const toFormat = (quarter, year) => {
  return year.toString() + parseInt(quarter).toString();
};
 
const fromFormat = (format) => {
  return `${quarters[parseInt(format.charAt(4)) - 1]} ${format.substring(
    0,
    4,
  )}`;
};
 
const fromNumericYYYYQ = (yyyyqInt) => {
  if (typeof yyyyqInt != "number") {
    throw new Error("param should be a number");
  }
  const yyyyqStr = yyyyqInt.toString();
  if (yyyyqStr.length !== 5) {
    throw new Error("param should be five digits");
  }
  const qStr = yyyyqStr.substring(4, 5);
  if (!(qStr in qtrNumToQuarter)) {
    throw new Error("param should end in 1,2,3 or 4");
  }
  return yyyyqStr;
};
 
const toNumericYYYYQ = (yyyyqStr) => {
  if (typeof yyyyqStr !== "string") {
    throw new Error("param should be a string");
  }
  if (yyyyqStr.length !== 5) {
    throw new Error("param should be five digits");
  }
  const qStr = yyyyqStr.substring(4, 5);
  if (!(qStr in qtrNumToQuarter)) {
    throw new Error("param should end in 1,2,3 or 4");
  }
  return parseInt(yyyyqStr);
};
 
const nextQuarter = (yyyyqInt) => {
  const _yyyyqStr = fromNumericYYYYQ(yyyyqInt); // just for type/format checking
  const qInt = yyyyqInt % 10;
  const yyyyInt = Math.floor(yyyyqInt / 10);
  if (qInt < 4) {
    return yyyyqInt + 1;
  }
  return (yyyyInt + 1) * 10 + 1;
};
 
const quarterRange = (beginYYYYQStr, endYYYYQStr) => {
  let quarterList = [];
  const beginYYYYQInt = toNumericYYYYQ(beginYYYYQStr);
  const endYYYYQInt = toNumericYYYYQ(endYYYYQStr);
  for (
    let yyyyqInt = beginYYYYQInt;
    yyyyqInt <= endYYYYQInt;
    yyyyqInt = nextQuarter(yyyyqInt)
  ) {
    const yyyyqStr = fromNumericYYYYQ(yyyyqInt);
    quarterList.push({
      yyyyq: yyyyqStr,
      qyy: yyyyqToQyy(yyyyqStr),
    });
  }
  return quarterList;
};
 
export {
  fromFormat,
  toFormat,
  yyyyqToQyy,
  qyyToYyyyq,
  fromNumericYYYYQ,
  toNumericYYYYQ,
  nextQuarter,
  quarterRange,
  qtrNumToQuarter,
};