feat: store last seen date for users and present in stats and user lists, closes #9007

pkg/util/strings.go

@@ -1,7 +1,10 @@
 package util
 
 import (
+	"fmt"
+	"math"
 	"regexp"
+	"time"
 )
 
 func StringsFallback2(val1 string, val2 string) string {
@@ -28,3 +31,34 @@ func SplitString(str string) []string {
 
 	return regexp.MustCompile("[, ]+").Split(str, -1)
 }
+
+func GetAgeString(t time.Time) string {
+	if t.IsZero() {
+		return "?"
+	}
+
+	sinceNow := time.Since(t)
+	minutes := sinceNow.Minutes()
+	years := int(math.Floor(minutes / 525600))
+	months := int(math.Floor(minutes / 43800))
+	days := int(math.Floor(minutes / 1440))
+	hours := int(math.Floor(minutes / 60))
+
+	if years > 0 {
+		return fmt.Sprintf("%dy", years)
+	}
+	if months > 0 {
+		return fmt.Sprintf("%dM", months)
+	}
+	if days > 0 {
+		return fmt.Sprintf("%dd", days)
+	}
+	if hours > 0 {
+		return fmt.Sprintf("%dh", hours)
+	}
+	if int(minutes) > 0 {
+		return fmt.Sprintf("%dm", int(minutes))
+	}
+
+	return "< 1m"
+}