import { User, Role, SecurityEvent } from './types.js';
/**
 * Authorization service for miura Framework
 * Handles role-based access control (RBAC) and permission checking
 */
export declare class AuthorizationService {
    private static instance;
    private roles;
    private eventListeners;
    private constructor();
    static getInstance(): AuthorizationService;
    /**
     * Check if user has permission for a specific resource and action
     */
    hasPermission(user: User, resource: string, action: string, conditions?: Record<string, any>): boolean;
    /**
     * Check if user has any of the specified roles
     */
    hasRole(user: User, roles: string | string[]): boolean;
    /**
     * Check if user has all of the specified roles
     */
    hasAllRoles(user: User, roles: string[]): boolean;
    /**
     * Add a new role
     */
    addRole(role: Role): void;
    /**
     * Remove a role
     */
    removeRole(roleName: string): void;
    /**
     * Get all roles
     */
    getRoles(): Role[];
    /**
     * Get role by name
     */
    getRole(roleName: string): Role | undefined;
    /**
     * Get current user's permissions
     */
    getCurrentUserPermissions(): string[];
    /**
     * Check if current user has permission
     */
    can(resource: string, action: string, conditions?: Record<string, any>): boolean;
    /**
     * Check if current user has role
     */
    is(roles: string | string[]): boolean;
    /**
     * Add event listener
     */
    on(event: string, callback: (event: SecurityEvent) => void): void;
    /**
     * Remove event listener
     */
    off(event: string, callback: (event: SecurityEvent) => void): void;
    private initializeDefaultRoles;
    private evaluateConditions;
    private emitSecurityEvent;
}
export declare const authz: AuthorizationService;
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