Erstes Commit

internal/formatter/relative.go

@@ -0,0 +1,41 @@
+package formatter
+
+import (
+	"fmt"
+	"time"
+)
+
+// Relative returns a human-friendly relative time string like "3 hours ago".
+func Relative(t time.Time) string {
+	d := time.Since(t)
+
+	if d < time.Minute {
+		return "just now"
+	}
+	if d < time.Hour {
+		m := int(d.Minutes())
+		return pluralize(m, "minute") + " ago"
+	}
+	if d < 24*time.Hour {
+		h := int(d.Hours())
+		return pluralize(h, "hour") + " ago"
+	}
+	if d < 30*24*time.Hour {
+		day := int(d.Hours() / 24)
+		return pluralize(day, "day") + " ago"
+	}
+	if d < 365*24*time.Hour {
+		month := int(d.Hours() / 24 / 30)
+		return pluralize(month, "month") + " ago"
+	}
+
+	year := int(d.Hours() / 24 / 365)
+	return pluralize(year, "year") + " ago"
+}
+
+func pluralize(n int, unit string) string {
+	if n == 1 {
+		return fmt.Sprintf("1 %s", unit)
+	}
+	return fmt.Sprintf("%d %ss", n, unit)
+}