#!/usr/bin/python3


class Utils:
    def __init__(self, app):
        self.app = app

    def format_time(self, ms):
        seconds = int(ms / 1000) % 60
        minutes = int(ms / (1000 * 60)) % 60
        hours = int(ms / (1000 * 60 * 60))

        seconds_str, minutes_str, hours_str = ("",) * 3  # create empty strings

        if hours > 0:
            hours_str = f"{hours}:"

        minutes_str = f"{minutes}:".zfill(2)
        seconds_str = f"{seconds}".zfill(2)

        output = hours_str + minutes_str + seconds_str

        return output