Add date abstraction

Author: Ulrich Lissé

date/date.go

@@ -0,0 +1,34 @@
+package date
+
+import "time"
+
+const layout = "2006-01-02"
+
+type Date struct {
+	time time.Time
+}
+
+func Today() Date {
+	return From(time.Now())
+}
+
+func From(time time.Time) Date {
+	return Date{time: time}
+}
+
+func Parse(date string) (Date, error) {
+	t, err := time.Parse(layout, date)
+	if err != nil {
+		return Date{}, err
+	}
+
+	return From(t), nil
+}
+
+func (d Date) Add(years int, months int, days int) Date {
+	return Date{time: d.time.AddDate(years, months, days)}
+}
+
+func (d Date) String() string {
+	return d.time.Format(layout)
+}