export function now() {
    var d = new Date();
    var year = d.getFullYear();
    var month = change(d.getMonth() + 1);
    var day = change(d.getDate());
    var hour = change(d.getHours());
    var minute = change(d.getMinutes());
    var second = change(d.getSeconds());
    function change(t) {
        if (t < 10) {
            return '0' + t;
        } else {
            return t;
        }
    }
    return year + '-' + month + '-' + day + ' ' + hour + ':' + minute + ':' + second;
}

export function timeFormat(usedTime = 0) {
    let hour = 0; let minute = 0; let second = 0; let sumTime = usedTime;
    if (sumTime) {
        if (sumTime >= 3600) {
            hour = Math.floor(sumTime / 3600) % 24;
            sumTime = (sumTime % 3600);
        }
        if (sumTime >= 60) {
            minute = Math.floor(sumTime / 60);
            sumTime = sumTime % 60;
        }
        second = Math.floor(sumTime);
    }
    function getTimeStr(val) {
        return val < 10 ? '0' + val : val;
    }
    return getTimeStr(hour) + ':' + getTimeStr(minute) + ':' + getTimeStr(second);
}

// 时分秒转为时间戳

export function toTimeStamp(time = '') {
    let s = 0;
    const hour = time.split(':')[0];
    const min = time.split(':')[1];
    const sec = time.split(':')[2];
    s = Number(hour * 3600) + Number(min * 60) + Number(sec);
    return s;
}

// 时间戳的只转为时分秒

export function formatDuring(mss) {
    const now = new Date(mss);
    const hour = now.getHours(); // 返回日期中的小时数（0到23）
    const minute = now.getMinutes(); // 返回日期中的分钟数（0到59）
    const second = now.getSeconds(); // 返回日期中的秒数（0到59）
    return hour + ':' + minute + ':' + second;
}

export function prefixIntrger(num, length) {
    return (Array(length).join('0') + num).slice(-length);
}
/** 根据秒计算时间hh:mm:ss */
export function computationTime(time) {
    let hours = Math.floor(time / 3600);
    const newTime = time % 3600;
    let minutes = Math.floor(newTime / 60) + '';
    let seconds = newTime % 60;
    if (hours < 0) {
        hours = '00';
    } else if (hours < 10) {
        hours = '0' + hours;
    }
    if (minutes < 0) {
        minutes = '00';
    } else if (minutes < 10) {
        minutes = '0' + minutes;
    }
    if (seconds < 0) {
        seconds = '00';
    } else if (seconds < 10) {
        seconds = '0' + seconds;
    }
    return hours + ':' + minutes + ':' + seconds;
}

export function computationSeconds(seconds, hourUnit, minuteUnit, secondUnit) {
    if (seconds) {
        const h = parseInt(seconds / 3600);
        const m = parseInt((seconds - h * 3600) / 60);
        const s = (seconds - h * 3600) % 60;
        return h ? `${h} ${hourUnit} ${m} ${minuteUnit} ${s} ${secondUnit}`
            : m ? `${m} ${minuteUnit} ${s} ${secondUnit}`
                : `${s} ${secondUnit}`;
    }
    return null;
}