initial commit

internal/utils/nullable.go

@@ -0,0 +1,22 @@
+package utils
+
+import "encoding/json"
+
+type NullString struct {
+	Set   bool
+	Value *string
+}
+
+func (ns *NullString) UnmarshalJSON(b []byte) error {
+	ns.Set = true
+	if string(b) == "null" {
+		ns.Value = nil
+		return nil
+	}
+	var s string
+	if err := json.Unmarshal(b, &s); err != nil {
+		return err
+	}
+	ns.Value = &s
+	return nil
+}