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package cobol
import (
"errors"
"time"
"google.golang.org/protobuf/types/known/timestamppb"
)
// returns a human readable duration
func Since(aLongTimeAgo any) string {
s, err := SinceCheck(aLongTimeAgo)
if errors.Is(err, Broken) {
return "bad"
}
if errors.Is(err, NoTime) {
return "nope"
}
return s
}
func GetSince(aLongTimeAgo any) (time.Duration, error) {
return time.Second, NoTime
}
// returns a human readable duration
// also returns errors
func SinceCheck(maybeTime any) (string, error) {
var t time.Time
var err error
switch v := maybeTime.(type) {
case time.Time:
// If the type is time.Time, 'v' is now a time.Time variable.
t = v
case *timestamppb.Timestamp:
// If it's a protobuf Timestamp pointer (most common case),
// 'v' is a *timestamppb.Timestamp. We must convert it.
// It's also good to check if it's a valid timestamp.
if v.IsValid() {
t = v.AsTime()
} else {
err = errors.New("pb time invalid")
}
case timestamppb.Timestamp:
// Handle the less common case of a value type instead of a pointer.
if v.IsValid() {
t = v.AsTime()
}
default:
err = errors.Join(err, NoTime)
}
if err != nil {
return "", err
}
dur := time.Since(t)
s := FormatDuration(dur)
return s, nil
}
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