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import { BYTES_IN_KIB } from './constants';
/**
* Function that allows a number with an X amount of decimals
* to be formatted in the following fashion:
* * For 1 digit to the left of the decimal point and X digits to the right of it
* * * Show 3 digits to the right
* * For 2 digits to the left of the decimal point and X digits to the right of it
* * * Show 2 digits to the right
*/
export function formatRelevantDigits(number) {
let digitsLeft = '';
let relevantDigits = 0;
let formattedNumber = '';
if (!Number.isNaN(Number(number))) {
[digitsLeft] = number.toString().split('.');
switch (digitsLeft.length) {
case 1:
relevantDigits = 3;
break;
case 2:
relevantDigits = 2;
break;
case 3:
relevantDigits = 1;
break;
default:
relevantDigits = 4;
break;
}
formattedNumber = Number(number).toFixed(relevantDigits);
}
return formattedNumber;
}
/**
* Utility function that calculates KiB of the given bytes.
*
* @param {Number} number bytes
* @return {Number} KiB
*/
export function bytesToKiB(number) {
return number / BYTES_IN_KIB;
}
/**
* Utility function that calculates MiB of the given bytes.
*
* @param {Number} number bytes
* @return {Number} MiB
*/
export function bytesToMiB(number) {
return number / (BYTES_IN_KIB * BYTES_IN_KIB);
}
/**
* Utility function that calculates GiB of the given bytes.
* @param {Number} number
* @returns {Number}
*/
export function bytesToGiB(number) {
return number / (BYTES_IN_KIB * BYTES_IN_KIB * BYTES_IN_KIB);
}
/**
* Port of rails number_to_human_size
* Formats the bytes in number into a more understandable
* representation (e.g., giving it 1500 yields 1.5 KB).
*
* @param {Number} size
* @returns {String}
*/
export function numberToHumanSize(size) {
if (size < BYTES_IN_KIB) {
return `${size} bytes`;
} else if (size < BYTES_IN_KIB * BYTES_IN_KIB) {
return `${bytesToKiB(size).toFixed(2)} KiB`;
} else if (size < BYTES_IN_KIB * BYTES_IN_KIB * BYTES_IN_KIB) {
return `${bytesToMiB(size).toFixed(2)} MiB`;
}
return `${bytesToGiB(size).toFixed(2)} GiB`;
}
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