//返回 例 2017
const formatYear = data => {
    var date = data.date;
    var types = data.types;
    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()
    if (types == 'year') {
        return [year].map(formatNumber).join('-')
    } else if (types == 'month') {
        return [month].map(formatNumber).join('-')
    } else if (types == 'day') {
        return [day].map(formatNumber).join('-')
    }

}

//返回 例 12月02日
const formatDate2 = date => {
    const month = date.getMonth() + 1
    const day = date.getDate()
    return [month].map(formatNumber) + '月' + [day].map(formatNumber) + '日'
}

//返回 例 2017-12-12
const formatDate = 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('-')
}
//返回 例 2017-12-12 12:30:00
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(':')
}
//返回 例 12-12 12:30:00
const formatTime2 = date => {
    const month = date.getMonth() + 1
    const day = date.getDate()
    const hour = date.getHours()
    const minute = date.getMinutes()

    return [month, day].map(formatNumber).join('-') + ' ' + [hour, minute].map(formatNumber).join(':')
}
//返回 小时12:00:00
const formatHour = data => {
    var date = data.date;
    var types = data.types;
    const hour = date.getHours()
    const minute = date.getMinutes()
    const second = date.getSeconds()

    if (types == 'hour') {
        return [hour].map(formatNumber)
    } else if (types == 'minute') {
        return [minute].map(formatNumber).join('-')
    } else if (types == 'second') {
        return [second].map(formatNumber)
    }
}

//返回 指定秒数59 ，  2017-12-12 12:30:59
function selfFormatTimeReturnSecond59(time) {
    let date = new Date(time);
    let year = date.getFullYear()
    let month = date.getMonth() + 1
    let day = date.getDate()
    let hour = date.getHours()
    let minute = date.getMinutes()
    let second = date.getSeconds()

    return [year, month, day].map(formatNumber).join('-') + ' ' + [hour, minute, '59'].map(formatNumber).join(':')
}


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

module.exports = {
    formatTime: formatTime,
    formatDate: formatDate,
    formatYear: formatYear,
    formatDate2: formatDate2,
    formatHour: formatHour,
    formatTime2: formatTime2,
    selfFormatTimeReturnSecond59
}