initial commit

pkg/enum/json.go

@@ -0,0 +1,22 @@
+package enum
+
+import (
+	"encoding/json"
+	"fmt"
+	"strings"
+)
+
+func MarshalEnum[T fmt.Stringer](val T) ([]byte, error) {
+	return json.Marshal(val.String())
+}
+
+func UnmarshalEnum[T fmt.Stringer](b []byte, enumValues []T) (T, error) {
+	var zero T
+	s := strings.Trim(string(b), `"`)
+	for _, val := range enumValues {
+		if val.String() == s {
+			return val, nil
+		}
+	}
+	return zero, fmt.Errorf("invalid value: %s", s)
+}