cpt-waffle-lotide/src/calculateDayInYear.js

LoTide in Typescript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const DAYS_IN_MONTH = [31, 0, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
const validMonth = (month) => month >= 1 && month <= 12;
const validDay = (month, day) => {
    return day >= 1 && day <= DAYS_IN_MONTH[month - 1];
};
const calculateDayNumber = (month, day) => {
    let dayOfYear = day;
    for (let i = 1; i < month; i++) {
        dayOfYear += DAYS_IN_MONTH[i - 1];
    }
    return dayOfYear;
};
const isMultiple = (numerator, denominator) => {
    return numerator % denominator === 0;
};
const isLeapYear = (year) => {
    const isMultipleFour = isMultiple(year, 4);
    const isMultipleOneHundred = isMultiple(year, 100);
    const isMultipleFourHundred = isMultiple(year, 400);
    if (!isMultipleFour) {
        return false;
    }
    else if (isMultipleFour && !isMultipleOneHundred) {
        return true;
    }
    else {
        if (isMultipleOneHundred && !isMultipleFourHundred) {
            return false;
        }
        else {
            return true;
        }
    }
};
const calculateDayInYear = (date) => {
    const splitDate = date.split('/');
    const [year, month, day] = splitDate.map((val) => Number(val));
    DAYS_IN_MONTH[1] = isLeapYear(year) ? 29 : 28;
    if (validMonth(month) && validDay(month, day)) {
        const result = calculateDayNumber(month, day);
        console.log(date, "is day", result, "of the year", year);
        return result;
    }
    else {
        console.log("Invalid date");
        return -1;
    }
};
exports.default = calculateDayInYear;