feat: reastructure and create commands

internal/ask/duration.go

@@ -0,0 +1,25 @@
+package ask
+
+import (
+	"fmt"
+	"time"
+)
+
+func Duration(query string, min, max time.Duration) time.Duration {
+	return raw(query, '\n', func(s string) (v time.Duration, msg string) {
+		v, err := time.ParseDuration(s)
+		if err != nil {
+			msg = "please enter a number"
+			return v, msg
+		}
+		if min >= 0 && v < min {
+			msg = fmt.Sprintf("your number must be bigger than %d", min)
+			return v, msg
+		}
+		if max >= 0 && v > max {
+			msg = fmt.Sprintf("your number must be smaller than %d", min)
+			return v, msg
+		}
+		return v, msg
+	})
+}