/**
 * numberFixedLen.pipe
 */

import { Pipe, PipeTransform } from '@angular/core';

@Pipe({
    name: 'numberFixedLen'
})
export class NumberFixedLenPipe implements PipeTransform {
    transform( num: number, len: number ): any {
        const number = Math.floor(num);
        const length = Math.floor(len);

        if (num === null || isNaN(number) || isNaN(length)) {
            return num;
        }

        let numString = number.toString();

        while (numString.length < length) {
            numString = '0' + numString;
        }

        return numString;
    }
}