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src/lib/auth/roles.ts

@@ -0,0 +1,43 @@
+const ADMIN_ROLES = new Set(["superadmin"]);
+
+export function normalizeRole(role: string | null | undefined): string {
+  return role?.trim().toLowerCase() ?? "";
+}
+
+export function normalizeRoles(
+  roles: Array<string | null | undefined> | null | undefined,
+): string[] {
+  if (!roles?.length) {
+    return [];
+  }
+
+  return Array.from(
+    new Set(roles.map((role) => normalizeRole(role)).filter(Boolean)),
+  );
+}
+
+export function hasRole(
+  roles: Array<string | null | undefined> | null | undefined,
+  expectedRole: string,
+): boolean {
+  return normalizeRoles(roles).includes(normalizeRole(expectedRole));
+}
+
+export function isAdminRole(
+  roles: Array<string | null | undefined> | null | undefined,
+): boolean {
+  return normalizeRoles(roles).some((role) => ADMIN_ROLES.has(role));
+}
+
+export function formatRoleLabel(role: string | null | undefined): string {
+  const normalizedRole = normalizeRole(role);
+
+  switch (normalizedRole) {
+    case "superadmin":
+      return "Superadmin";
+    case "user":
+      return "User";
+    default:
+      return role?.trim() || "User";
+  }
+}