const formatTime = date => {
    const year = date.getFullYear()
    const month = date.getMonth() + 1
    const day = date.getDate()
    const hour = date.getHours()
    const minute = date.getMinutes()
    const second = date.getSeconds()

    return [year, month, day].map(formatNumber).join('/') + ' ' + [hour, minute, second].map(formatNumber).join(':')
}

/**
 * 
 * @param {*} date 
 */
const formatDate = date => {
    const year = date.getFullYear()
    const month = date.getMonth() + 1
    const day = date.getDate()

    return [year, month, day].map(formatNumber).join('-')
}

const formatNumber = n => {
    n = n.toString()
    return n[1] ? n : '0' + n
}

function indexOf(str, val) {
    if (str.indexOf(val) != -1) {
        return true;
    } else {
        return false;
    }
}
function formatDuration(){
    
}
module.exports = {
    formatTime: formatTime,
    formatDate: formatDate,
    indexOf: indexOf
}