Add role management

Signed-off-by: Sacha Al Himdani <sacha@getprobo.com>

pkg/coredata/member_role.go

@@ -0,0 +1,60 @@
+// Copyright (c) 2025 Probo Inc <hello@getprobo.com>.
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+package coredata
+
+import (
+	"database/sql/driver"
+	"fmt"
+)
+
+type MembershipRole string
+
+const (
+	MembershipRoleOwner  MembershipRole = "OWNER"
+	MembershipRoleAdmin  MembershipRole = "ADMIN"
+	MembershipRoleViewer MembershipRole = "VIEWER"
+)
+
+func (r MembershipRole) String() string {
+	return string(r)
+}
+
+func (r *MembershipRole) Scan(value any) error {
+	var s string
+	switch v := value.(type) {
+	case string:
+		s = v
+	case []byte:
+		s = string(v)
+	default:
+		return fmt.Errorf("unsupported type for MembershipRole: %T", value)
+	}
+
+	switch s {
+	case "OWNER":
+		*r = MembershipRoleOwner
+	case "ADMIN":
+		*r = MembershipRoleAdmin
+	case "VIEWER":
+		*r = MembershipRoleViewer
+	default:
+		return fmt.Errorf("invalid MembershipRole value: %q", s)
+	}
+	return nil
+}
+
+func (r MembershipRole) Value() (driver.Value, error) {
+	return r.String(), nil
+}