/**
 * Type definitions for prompt caching integration
 */
export interface CacheConfig {
    enabled: boolean;
    provider: 'anthropic' | 'openai' | 'auto';
    ttl?: '5min' | '1hour';
    cacheStaticPrompts: boolean;
    minCacheableTokens?: number;
}
export interface CachedContent {
    staticPrefix: string;
    dynamicContent: string;
    cacheBreakpoint: boolean;
    cacheMetadata?: CacheMetadata;
}
export interface CacheMetadata {
    provider: 'anthropic' | 'openai';
    estimatedCacheSize: number;
    cacheKey?: string;
    ttl?: string;
}
export interface CacheMetrics {
    cacheHits: number;
    cacheMisses: number;
    cacheHitRate: number;
    estimatedCacheSavings: number;
    totalCacheableTokens: number;
    averageCacheReuseCount: number;
}
/**
 * Anthropic message content block format
 */
export interface AnthropicContentBlock {
    type: 'text';
    text: string;
    cache_control?: {
        type: 'ephemeral';
    };
}
/**
 * OpenAI structured message format
 */
export interface OpenAIMessageFormat {
    system: string;
    user: string;
}
/**
 * Union type for provider-specific cache structures
 */
export type CacheStructure = AnthropicContentBlock[] | OpenAIMessageFormat;
export interface CacheStrategy {
    name: string;
    shouldCache: (content: string, tokens: number) => boolean;
    formatCacheStructure: (content: CachedContent) => CacheStructure;
}
/**
 * LRU Cache Configuration
 */
export interface LRUCacheConfig {
    enabled: boolean;
    maxSize: number;
    ttl: number;
    persistent: boolean;
    persistPath?: string;
}
/**
 * LRU Cache Entry
 */
export interface LRUCacheEntry<T> {
    key: string;
    value: T;
    timestamp: number;
    lastAccessed: number;
    accessCount: number;
    expiresAt: number;
}
/**
 * LRU Cache Statistics
 */
export interface LRUCacheStats {
    hits: number;
    misses: number;
    evictions: number;
    expirations: number;
    currentSize: number;
    maxSize: number;
    hitRate: number;
    averageAccessCount: number;
}
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