export type CrmRole = 'admin' | 'editor' | 'viewer';
export const CRM_ROLES: CrmRole[] = ['admin', 'editor', 'viewer'];

export function isCrmRole(value: unknown): value is CrmRole {
  return value === 'admin' || value === 'editor' || value === 'viewer';
}

/** Editors and admins may create/update records; viewers are read-only. */
export function canWrite(role: unknown): boolean {
  return role === 'admin' || role === 'editor';
}

/** Only admins may delete records. */
export function canDelete(role: unknown): boolean {
  return role === 'admin';
}

export function canImport(role: unknown): boolean {
  return role === 'admin' || role === 'editor';
}

export function roleLabel(role: unknown): string {
  return isCrmRole(role) ? role : 'viewer';
}