const formatTime = (date = new Date(), j1 = '-', j2 = ':') => {
    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(j1)} ${[hour, minute, second].map(formatNumber).join(j2)}`
}
const formatNumber = n => {
    n = n.toString()
    return n[1] ? n : `0${n}`
}

function getWeek(deta = new Date(), prefix = '周') {
    return prefix + ["日", "一", "二", "三", "四", "五", "六"][deta.getDay()];
}

function getYMD(date = new Date()) {
    const year = date.getFullYear()
    const month = date.getMonth() + 1
    const day = date.getDate()
    return `${year}年${month}月${day}日`
}

module.exports = {
    formatTime,
    getWeek,
    getYMD
}