package date

import (
    "fmt"
    "math"
    "time"
)

const (
    ONE_MINTUE = 60
    ONE_HOUR   = 3600
)

const (
    DateBaseFormat     = "2006-01-02"
    DateBaseFormatTime = "22006-01-02 15:04:05"
)

func FormatDuration(duration int) string {
    if duration <= 0 {
        return "00:00"
    }

    if duration <= ONE_HOUR {
        m := math.Floor(float64(duration / ONE_MINTUE))
        s := duration % ONE_MINTUE
        return fmt.Sprintf("%02d:%02d", int(m), int(s))
    }

    h := math.Floor(float64(duration / ONE_HOUR))
    ss := math.Floor(float64(duration - int(h)*ONE_HOUR))
    var m int
    if ss >= 60 {
        m = int(math.Floor(float64(ss / ONE_MINTUE)))
    } else {
        m = 0
    }
    s := duration - (int(h*ONE_HOUR) + m*ONE_MINTUE)
    return fmt.Sprintf("%02d:%02d:%02d", int(h), int(m), s)
}

func FormatDate(ctime int64) string {
    ct := time.Now()
    show := time.Unix(ctime, 0).Format(DateBaseFormat)
    ot := time.Unix(ctime, 0)
    hours := ct.Sub(ot).Hours()
    minute := ct.Sub(ot).Minutes()
    day := ct.Sub(ot).Hours() / 24
    if day < 1 {
        switch {
        case int(minute) == 0:
            show = "刚刚"
        case hours < 1:
            show = fmt.Sprintf("%d 分钟前", int(minute))
        default:
            show = fmt.Sprintf("%d 小时前", int(hours))
        }
    }

    if day >= 1 && day < 7 {
        show = fmt.Sprintf("%d 天前", int(day))
    }

    return show
}

// 格式化语音时长
func FormatVoiceDuration(duration int) string {
    show := ""
    if duration == 0 {
        return show
    }

    s := float64(duration) / 1000
    ss := math.Ceil(float64(s))
    var m int
    if ss < 60 {
        show = fmt.Sprintf("%d\"", int(ss))
    } else {
        m = int(math.Floor(float64(ss / ONE_MINTUE)))
        sss := (ss - float64(m)*ONE_MINTUE)
        show = fmt.Sprintf("%d'%d\"", m, int(sss))
    }
    return show
}