import { ContentReference, ReferenceId } from '../types/content-reference';
import { ContentStorage } from '../memory/ContentStorage';
import { Logger } from '@hashgraphonline/standards-sdk';

export interface ReferenceContext {
    reference: ContentReference;
    displayedAt: Date;
    lastAccessedAt: Date;
    contextId: string;
    conversationTurn: number;
}
export interface ReferenceDisplayOptions {
    maxPreviewLength?: number;
    showMetadata?: boolean;
    showSize?: boolean;
    includeActions?: boolean;
    format?: 'inline' | 'card' | 'compact';
}
export interface DisplayResult {
    displayText: string;
    hasValidReference: boolean;
    contextId?: string;
    suggestedActions?: string[];
}
/**
 * Manages content references within agent conversation context
 * Tracks reference usage, provides display formatting, and handles reference validation
 */
export declare class ReferenceContextManager {
    private activeReferences;
    private contentStorage;
    private logger;
    private conversationTurn;
    constructor(contentStorage: ContentStorage, logger: Logger);
    /**
     * Add a reference to the current conversation context
     */
    addReference(reference: ContentReference): string;
    /**
     * Generate display text for a content reference
     */
    displayReference(reference: ContentReference, options?: ReferenceDisplayOptions): Promise<DisplayResult>;
    /**
     * Get the most recent reference for "inscribe it" commands
     */
    getMostRecentReference(): ContentReference | null;
    /**
     * Get reference by context ID
     */
    getReferenceByContextId(contextId: string): ContentReference | null;
    /**
     * Validate all active references and remove invalid ones
     */
    validateReferences(): Promise<{
        valid: number;
        invalid: number;
        removed: ReferenceId[];
    }>;
    /**
     * Clear old references based on age and usage
     */
    cleanupOldReferences(maxAgeMs?: number): number;
    /**
     * Get current context statistics
     */
    getContextStats(): {
        activeReferences: number;
        conversationTurn: number;
        oldestReference: number | null;
        mostRecentReference: number | null;
    };
    /**
     * Clear all references from context
     */
    clear(): void;
    private formatCardReference;
    private formatInlineReference;
    private formatCompactReference;
    private formatInvalidReference;
    private formatErrorReference;
    private truncateText;
    private getOldestReferenceAge;
    private getMostRecentReferenceAge;
}