/**
 * LLM Provider Registry
 *
 * Central registry for managing and accessing LLM providers.
 * Handles provider registration, capability validation, and enabled LLM tracking.
 */
import type { LLMProvider, ServiceType, ProviderName } from './types.js';
import type { Logger } from '../llm_api/types.js';
/**
 * Register a provider in the registry
 * @param provider - The provider instance to register
 */
export declare function register_provider(provider: LLMProvider): void;
/**
 * Set which LLMs are enabled
 * @param enabled_names - Array of LLM names that are enabled
 */
export declare function set_enabled_llms(enabled_names: string[]): void;
/**
 * Set the primary/default LLM
 * @param name - Name of the primary LLM
 */
export declare function set_primary_llm(name: string): void;
/**
 * Get the primary/default LLM name
 * @returns Primary LLM name or null if not set
 */
export declare function get_primary_llm(): string | null;
/**
 * Check if an LLM is enabled
 * @param name - LLM name to check
 * @returns True if the LLM is enabled
 */
export declare function is_llm_enabled(name: string): boolean;
/**
 * Get a provider by name
 * @param name - Provider name (case-insensitive). Use LLM_PROVIDERS constants for type safety.
 * @param logger - Logger instance for error logging
 * @returns Provider instance or null if not found
 */
export declare function get_provider(name: ProviderName | null | undefined, logger: Logger): LLMProvider | null;
/**
 * Check if a provider supports a specific service type
 * @param provider - Provider instance
 * @param service_type - Service type to check
 * @returns True if the provider supports the service
 */
export declare function has_capability(provider: LLMProvider, service_type: ServiceType): boolean;
/**
 * Validate that a provider supports a service before calling it
 * @param provider - Provider instance
 * @param service_type - Service type to validate
 * @param logger - Logger instance
 * @returns True if capability is supported, false otherwise
 */
export declare function validate_capability(provider: LLMProvider, service_type: ServiceType, logger: Logger): boolean;
/**
 * Get all registered provider names
 * @returns Array of provider names
 */
export declare function get_registered_providers(): string[];
/**
 * Clear all registered providers (useful for testing)
 */
export declare function clear_registry(): void;
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