import { ILogWriter } from "../types";
import { EvaluatableBaseContainer } from "./base";
/**
 * Configuration object for retrieval.
 */
export type RetrievalConfig = {
    id: string;
    name?: string;
    tags?: Record<string, string>;
    /**
     * Optional explicit start timestamp. If not provided, defaults to current time.
     */
    startTimestamp?: Date;
    /**
     * Optional explicit end timestamp. Can be set during creation for completed operations.
     */
    endTimestamp?: Date;
};
/**
 * Represents a retrieval.
 *
 * Retrieval operations capture the process of searching, querying, or fetching
 * relevant information from databases, vector stores, knowledge bases, or other
 * data sources. Essential for RAG (Retrieval-Augmented Generation) applications.
 *
 * @class Retrieval
 * @extends EvaluatableBaseContainer
 * @example
 * const retrieval = container.retrieval({
 *   id: 'faq-search-001',
 *   name: 'FAQ Knowledge Search',
 * });
 *
 * // Set the search query
 * retrieval.input('How do I reset my password?');
 *
 * // Record the retrieved documents
 * retrieval.output([
 *   'To reset your password, go to Settings > Security...',
 *   'Password requirements: minimum 8 characters...',
 *   'If you forgot your password, click "Forgot Password"...'
 * ]);
 */
export declare class Retrieval extends EvaluatableBaseContainer {
    /**
     * Creates a new retrieval log entry.
     *
     * @param config - Configuration object defining the retrieval
     * @param writer - Log writer instance for persisting retrieval data
     * @example
     * const retrieval = container.retrieval({
     *   id: 'knowledge-search-001',
     *   name: 'Product Knowledge Base Search',
     * });
     */
    constructor(config: RetrievalConfig, writer: ILogWriter);
    /**
     * Sets the input query for this retrieval operation.
     *
     * @param query - The search query or input text
     * @returns void
     * @example
     * retrieval.input('How do I troubleshoot connection issues?');
     */
    input(query: string): void;
    /**
     * Static method to set input for any retrieval by ID.
     *
     * @param writer - The log writer instance
     * @param id - The retrieval ID
     * @param query - The search query or input text
     * @returns void
     */
    static input_(writer: ILogWriter, id: string, query: string): void;
    /**
     * Sets the output results for this retrieval operation and ends it.
     *
     * @param docs - Retrieved documents as a single string or array
     * @returns void
     * @example
     * // Single result
     * retrieval.output('Connection troubleshooting guide: First, check cables...');
     *
     * @example
     * // Multiple results
     * retrieval.output([
     *   'Document 1: Basic troubleshooting steps...',
     *   'Document 2: Advanced network diagnostics...',
     *   'Document 3: Common error codes and solutions...'
     * ]);
     */
    output(docs: string | string[]): void;
    /**
     * Static method to set output for any retrieval by ID.
     *
     * @param writer - The log writer instance
     * @param id - The retrieval ID
     * @param docs - Retrieved documents as a single string or array
     * @returns void
     */
    static output_(writer: ILogWriter, id: string, docs: string | string[]): void;
    /**
     * Adds a numeric metric to this retrieval.
     *
     * Records quantitative values used in information retrieval and RAG evaluation under a
     * named metric. Each call adds or updates a single metric entry.
     *
     * Common examples include: `precision`, `recall`, `f1_score`, `mrr` (Mean Reciprocal Rank),
     * `ndcg` (Normalized Discounted Cumulative Gain), `avg_similarity`, `results_count`,
     * `unique_sources_count`.
     *
     * @param name - Name of the metric
     * @param value - Numeric value of the metric (numeric)
     * @returns void
     * @example
     * retrieval.addMetric('precision', 0.82);
     * retrieval.addMetric('recall', 0.76);
     * retrieval.addMetric('mrr', 0.61);
     * retrieval.addMetric('results_count', 10);
     */
    addMetric(name: string, value: number): void;
    /**
     * Static method to add a metric to any retrieval by ID.
     *
     * @param writer - The log writer instance
     * @param id - The retrieval ID
     * @param name - Name of the metric
     * @param value - Numeric value of the metric (float/number)
     * @returns void
     */
    static addMetric_(writer: ILogWriter, id: string, name: string, value: number): void;
}