enum ExaRole {
  Admin = 'admin',
  Developer = 'developer',
  Viewer = 'viewer',
  Service = 'service',
}

interface ExaPermissions {
  read: boolean;
  write: boolean;
  delete: boolean;
  admin: boolean;
}

const ROLE_PERMISSIONS: Record<ExaRole, ExaPermissions> = {
  admin: { read: true, write: true, delete: true, admin: true },
  developer: { read: true, write: true, delete: false, admin: false },
  viewer: { read: true, write: false, delete: false, admin: false },
  service: { read: true, write: true, delete: false, admin: false },
};

function checkPermission(
  role: ExaRole,
  action: keyof ExaPermissions
): boolean {
  return ROLE_PERMISSIONS[role][action];
}

// Exa SAML setup
const samlConfig = {
  entryPoint: 'https://idp.company.com/saml/sso',
  issuer: 'https://exa.com/saml/metadata',
  cert: process.env.SAML_CERT,
  callbackUrl: 'https://app.yourcompany.com/auth/exa/callback',
};

// Map IdP groups to Exa roles
const groupRoleMapping: Record<string, ExaRole> = {
  'Engineering': ExaRole.Developer,
  'Platform-Admins': ExaRole.Admin,
  'Data-Team': ExaRole.Viewer,
};

import { OAuth2Client } from '@exa/sdk';

const oauthClient = new OAuth2Client({
  clientId: process.env.EXA_OAUTH_CLIENT_ID!,
  clientSecret: process.env.EXA_OAUTH_CLIENT_SECRET!,
  redirectUri: 'https://app.yourcompany.com/auth/exa/callback',
  scopes: ['read', 'write'],
});

interface ExaOrganization {
  id: string;
  name: string;
  ssoEnabled: boolean;
  enforceSso: boolean;
  allowedDomains: string[];
  defaultRole: ExaRole;
}

async function createOrganization(
  config: ExaOrganization
): Promise<void> {
  await exaClient.organizations.create({
    ...config,
    settings: {
      sso: {
        enabled: config.ssoEnabled,
        enforced: config.enforceSso,
        domains: config.allowedDomains,
      },
    },
  });
}

function requireExaPermission(
  requiredPermission: keyof ExaPermissions
) {
  return async (req: Request, res: Response, next: NextFunction) => {
    const user = req.user as { exaRole: ExaRole };

    if (!checkPermission(user.exaRole, requiredPermission)) {
      return res.status(403).json({
        error: 'Forbidden',
        message: `Missing permission: ${requiredPermission}`,
      });
    }

    next();
  };
}

// Usage
app.delete('/exa/resource/:id',
  requireExaPermission('delete'),
  deleteResourceHandler
);

interface ExaAuditEntry {
  timestamp: Date;
  userId: string;
  role: ExaRole;
  action: string;
  resource: string;
  success: boolean;
  ipAddress: string;
}

async function logExaAccess(entry: ExaAuditEntry): Promise<void> {
  await auditDb.insert(entry);

  // Alert on suspicious activity
  if (entry.action === 'delete' && !entry.success) {
    await alertOnSuspiciousActivity(entry);
  }
}

if (!checkPermission(user.role, 'write')) {
  throw new ForbiddenError('Write permission required');
}