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package cobol
import (
"errors"
"time"
"google.golang.org/protobuf/types/known/durationpb"
"google.golang.org/protobuf/types/known/timestamppb"
)
func Duration(howLongWasThis any) string {
d, err := DurationCheck(howLongWasThis)
if errors.Is(err, Broken) {
return "bad"
}
if errors.Is(err, NoTime) {
return "nope"
}
return FormatDuration(d)
}
func GetDuration(tookForever any) (time.Duration, error) {
d, err := DurationCheck(tookForever)
return d, err
}
func DurationCheck(maybeTime any) (time.Duration, error) {
var d time.Duration
var err error
switch v := maybeTime.(type) {
case time.Time:
// If the type is time.Time, 'v' is now a time.Time variable.
d = time.Since(v)
case time.Duration:
// If the type is time.Time, 'v' is now a time.Time variable.
d = v
case *time.Duration:
// If the type is time.Time, 'v' is now a time.Time variable.
d = *v
case string:
// The type is string, so 'v' is a string variable.
// t, err = doTimeString(v)
err = NewFeature
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() {
d = time.Since(v.AsTime())
} else {
err = errors.New("pb time invalid")
}
case *durationpb.Duration:
d = v.AsDuration()
case durationpb.Duration:
d = v.AsDuration()
case timestamppb.Timestamp:
// Handle the less common case of a value type instead of a pointer.
if v.IsValid() {
d = time.Since(v.AsTime())
}
default:
err = errors.Join(err, NoTime)
}
return d, err
}
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