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// Copyright 2014 The Gogs Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package base
import (
"crypto/md5"
"encoding/hex"
"fmt"
"time"
)
// Encode string to md5 hex value
func EncodeMd5(str string) string {
m := md5.New()
m.Write([]byte(str))
return hex.EncodeToString(m.Sum(nil))
}
// Seconds-based time units
const (
Minute = 60
Hour = 60 * Minute
Day = 24 * Hour
Week = 7 * Day
Month = 30 * Day
Year = 12 * Month
)
// TimeSince calculates the time interval and generate user-friendly string.
func TimeSince(then time.Time) string {
now := time.Now()
lbl := "ago"
diff := now.Unix() - then.Unix()
if then.After(now) {
lbl = "from now"
diff = then.Unix() - now.Unix()
}
switch {
case diff <= 0:
return "now"
case diff <= 2:
return fmt.Sprintf("1 second %s", lbl)
case diff < 1*Minute:
return fmt.Sprintf("%d seconds %s", diff, lbl)
case diff < 2*Minute:
return fmt.Sprintf("1 minute %s", lbl)
case diff < 1*Hour:
return fmt.Sprintf("%d minutes %s", diff/Minute, lbl)
case diff < 2*Hour:
return fmt.Sprintf("1 hour %s", lbl)
case diff < 1*Day:
return fmt.Sprintf("%d hours %s", diff/Hour, lbl)
case diff < 2*Day:
return fmt.Sprintf("1 day %s", lbl)
case diff < 1*Week:
return fmt.Sprintf("%d days %s", diff/Day, lbl)
case diff < 2*Week:
return fmt.Sprintf("1 week %s", lbl)
case diff < 1*Month:
return fmt.Sprintf("%d weeks %s", diff/Week, lbl)
case diff < 2*Month:
return fmt.Sprintf("1 month %s", lbl)
case diff < 1*Year:
return fmt.Sprintf("%d months %s", diff/Month, lbl)
case diff < 18*Month:
return fmt.Sprintf("1 year %s", lbl)
}
return then.String()
}
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