Uniformize enum style

Signed-off-by: Bryan Frimin <bryan@probo.com>

pkg/coredata/user_auth_method.go

@@ -14,9 +14,57 @@
 
 package coredata
 
+import (
+	"encoding"
+	"fmt"
+)
+
 type UserAuthMethod string
 
 const (
 	UserAuthMethodPassword UserAuthMethod = "PASSWORD"
 	UserAuthMethodSAML     UserAuthMethod = "SAML"
 )
+
+var (
+	_ fmt.Stringer             = UserAuthMethod("")
+	_ encoding.TextMarshaler   = UserAuthMethod("")
+	_ encoding.TextUnmarshaler = (*UserAuthMethod)(nil)
+)
+
+func UserAuthMethods() []UserAuthMethod {
+	return []UserAuthMethod{
+		UserAuthMethodPassword,
+		UserAuthMethodSAML,
+	}
+}
+
+func (v UserAuthMethod) IsValid() bool {
+	switch v {
+	case
+		UserAuthMethodPassword,
+		UserAuthMethodSAML:
+		return true
+	}
+
+	return false
+}
+
+func (v UserAuthMethod) String() string {
+	return string(v)
+}
+
+func (v UserAuthMethod) MarshalText() ([]byte, error) {
+	return []byte(v.String()), nil
+}
+
+func (v *UserAuthMethod) UnmarshalText(text []byte) error {
+	val := UserAuthMethod(text)
+	if !val.IsValid() {
+		return fmt.Errorf("invalid UserAuthMethod value: %q", string(text))
+	}
+
+	*v = val
+
+	return nil
+}