feat: add expiration time in the note web view

Fixes #35.

Signed-off-by: Julien Riou <julien@riou.xyz>

src/internal/utils.go

@@ -9,6 +9,7 @@ import (
 	"path/filepath"
 	"regexp"
 	"strings"
+	"time"
 )
 
 func ReadConfig(file string, config interface{}) error {
@@ -102,6 +103,15 @@ func HumanDuration(i int) string {
 	return fmt.Sprintf("%d %s", i, w)
 }
 
+// TimeDiff to return the number of seconds between this time and now
+func TimeDiff(ts time.Time) int {
+	diff := int(time.Since(ts).Seconds())
+	if diff < 0 {
+		return diff * -1
+	}
+	return diff
+}
+
 func ReturnError(logger *slog.Logger, message string, err error) int {
 	if err != nil {
 		logger.Error(message, slog.Any("error", err))