/**
 * Provider Fallback Service - Manages three-tier provider resolution
 *
 * Tier 1: MCP Sampling (when Cursor supports it)
 * Tier 2: Guided Completion Mode (uses Cursor subscription, no API keys)
 * Tier 3: API Key Fallback (Anthropic, OpenAI, Google)
 */
import type { LLMProvider } from '../types/llm.types.js';
import type { MCPSamplingService } from '../types/mcp.types.js';
import { GUIDED_MODE, type GuidedMode, type ProviderResolutionPath, ResolutionPath } from '../types/provider.types.js';
import type { CLIProviderResolver } from './provider-resolver.js';
/**
 * Re-export for backward compatibility
 */
export { GUIDED_MODE, ResolutionPath };
export type { GuidedMode, ProviderResolutionPath };
export interface ProviderFallbackContext {
    inMCPContext: boolean;
    mode?: string;
    model?: string;
    providerConfig: Record<string, unknown>;
    providerName: string;
}
export interface ProviderResolution {
    fallbackReason?: string;
    provider: LLMProvider;
    providerName: string;
    resolutionPath: ProviderResolutionPath;
}
export declare class ProviderFallbackService {
    private providerResolver;
    private providerRegistry;
    constructor(providerResolver: CLIProviderResolver, providerRegistry?: import("../llm/registry.js").LLMProviderRegistry);
    /**
     * Resolve provider with automatic three-tier fallback
     *
     * @param context - Provider resolution context
     * @param mcpSampling - Optional MCP sampling service
     * @returns Provider resolution result with metadata
     */
    resolveWithFallback(context: ProviderFallbackContext, mcpSampling?: MCPSamplingService): Promise<ProviderResolution>;
    /**
     * Check if we should use guided completion mode
     * Returns true if in MCP context but no API keys configured
     */
    shouldUseGuidedCompletion(): Promise<boolean>;
    /**
     * Get human-readable description of resolution path
     */
    getResolutionPathDescription(path: ProviderResolutionPath): string;
}
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