import { ILogWriter } from "../types";
import { EvaluatableBaseContainer } from "./base";
import { Trace, TraceConfig } from "./trace";
/**
 * Configuration object for session.
 */
export type SessionConfig = {
    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 user or system session containing multiple traces (back and forth interactions).
 *
 * Sessions provide a high-level grouping mechanism for related activities,
 * typically representing a user interaction session, conversation, etc.
 * Sessions can contain multiple traces and support feedback collection.
 *
 * @class Session
 * @extends EvaluatableBaseContainer
 * @example
 * const session = logger.session({
 *   id: 'chat-session-001',
 *   name: 'Customer Support Session',
 * });
 *
 * // Add traces to the session
 * const trace = session.trace({
 *   id: 'query-trace-001',
 *   name: 'User Query Processing'
 * });
 *
 * @example
 * // Adding feedback and ending session
 * session.feedback({
 *   score: 5,
 *   comment: 'Very helpful and quick response'
 * });
 *
 * session.addTag('resolution', 'solved');
 * session.end();
 */
export declare class Session extends EvaluatableBaseContainer {
    private static readonly ENTITY;
    /**
     * Creates a new session log entry.
     *
     * @param config - Configuration object defining the session
     * @param writer - Log writer instance for persisting session data
     * @example
     * const session = logger.session({
     *   id: 'support-session-789',
     *   name: 'Technical Support Call',
     * });
     */
    constructor(config: SessionConfig, writer: ILogWriter);
    /**
     * Adds feedback to this session from users.
     *
     * @param feedback - Feedback object containing score and optional comment
     * @param feedback.score - Numerical score for the session (1-5)
     * @param feedback.comment - Optional textual feedback or comments
     * @returns void
     * @example
     * session.feedback({
     *   score: 4,
     *   comment: 'Good service but response time could be improved'
     * });
     *
     * @example
     * // Score only
     * session.feedback({ score: 5 });
     */
    feedback(feedback: {
        score: number;
        comment?: string;
    }): void;
    /**
     * Static method to add feedback to any session by ID.
     *
     * @param writer - The log writer instance
     * @param id - The session ID
     * @param feedback - Feedback object containing score and optional comment
     * @param feedback.score - Numerical score for the session
     * @param feedback.comment - Optional textual feedback
     * @returns void
     */
    static feedback_(writer: ILogWriter, id: string, feedback: {
        score: number;
        comment?: string;
    }): void;
    /**
     * Creates a new trace within this session.
     *
     * @param config - Configuration for the new trace
     * @returns A new trace instance associated with this session
     * @example
     * const trace = session.trace({
     *   id: 'authentication-trace',
     *   name: 'User Authentication Flow',
     * });
     */
    trace(config: TraceConfig): Trace;
    /**
     * Static method to create a trace associated with any session by ID.
     *
     * @param writer - The log writer instance
     * @param id - The session ID
     * @param config - Configuration for the new trace
     * @returns A new trace instance
     */
    static trace_(writer: ILogWriter, id: string, config: TraceConfig): Trace;
    /**
     * Adds a numeric metric to this session.
     *
     * Records quantitative values such as counts and aggregates across all traces in the
     * session. Each call adds or updates a single metric entry under the provided name.
     *
     * Common examples include: `tool_calls_count`, `traces_count`, `user_messages_count`, `assistant_messages_count`.
     *
     * @param name - Name of the metric
     * @param value - Numeric value of the metric (numeric)
     * @returns void
     * @example
     * session.addMetric('traces_count', 4);
     * session.addMetric('user_messages_count', 2);
     */
    addMetric(name: string, value: number): void;
    /**
     * Static method to add a metric to any session by ID.
     *
     * @param writer - The log writer instance
     * @param id - The session ID
     * @param name - Name of the metric
     * @param value - Numeric value of the metric (numeric)
     * @returns void
     */
    static addMetric_(writer: ILogWriter, id: string, name: string, value: number): void;
}