studyCalculator.js

const input = require('readline-sync');

//let choice = input.question("Do you want to choose daily minutes to study or overall goal time period? (please type either 'daily' or 'goal' or 'cancel' to exit) \n");
const options = ['daily', 'goal', 'cancel'];

let notOver = true;

do {
    let choice = input.question("Do you want to choose daily minutes to study or overall goal time period? (please type either 'daily' or 'goal' or 'cancel' to exit) \n");
    while (!options.includes(choice)) {
        choice = input.question("Do you want to choose daily minutes to study or overall goal time period? (please type either 'daily' or 'goal' or 'cancel' to exit) \n");
    }

    //choice = daily
    if (choice == options[0]) {
        let studyTopic = input.question("What do you want to study? ");
        let timeStudy = input.question("How long will you study daily (in minutes)? ");

        let timeInYear = Math.round(365 * Number(timeStudy) / 60 * 100) / 100;
        let timeInMonth = Math.round(30 * Number(timeStudy) / 60 * 100) / 100;
        let timeInWeek = Math.round(7 * Number(timeStudy) / 60 * 100) / 100;

        console.log();
        console.log(`\nIf you study ${timeStudy} minutes a day of ${studyTopic},
        you will study ${timeInWeek} hours per week
        ${timeInMonth} hours per month
        and ${timeInYear} hours per year.\n\n`);

        console.log();
        //choice = goal
    } else if (choice == options[1]) {
        let studyTopic = input.question("What do you want to study? ");
        let goalStudy = input.question("How many hours do you want to study? ");
        let studyPeriod = input.question("Over how many days do you want to reach this goal? (week = 7, month = 30, year = 365) ");

        let calculatedStudyDaily = Math.round((Number(goalStudy) / Number(studyPeriod)) * 60 * 100) / 100;

        console.log();
        console.log("If you want to study " + goalStudy + " hours of " + studyTopic + " over " + studyPeriod + " days, it will take you " + calculatedStudyDaily + " minutes a day. \n\n");
    } else if (choice == options[2]) {
        notOver = false;
        console.log("Exiting now");
    }

} while (notOver);

/*let studyTopic = input.question("What do you want to study? ");
let timeStudy = input.question("How long will you study daily (in minutes)? ");

let timeInYear = 365 * Number(timeStudy) / 60;
let timeInMonth = 30 * Number(timeStudy) / 60;
let timeInWeek = 7 * Number(timeStudy) / 60;

console.log(`\nIf you study ${timeStudy} a day of ${studyTopic},
you will study ${timeInWeek} hours per week
${timeInMonth} hours per month
and ${timeInYear} hours per year.`);

console.log();

let goalStudy = input.question("How many hours do you want to study? ");
let studyPeriod = input.question("Over how many days do you want to reach this goal? (week = 7, month = 30, year = 365) ");
let calculatedStudyDaily = (Number(goalStudy) / Number(studyPeriod)) * 60;

console.log("If you want to study " + goalStudy + " hours of " + studyTopic + " over " + studyPeriod + " days, it will take you " + calculatedStudyDaily + " minutes a day.");
*/