import { EventEmitter } from "events";
import { OpenAICallTrackerCallback } from "../../openai_cost_tracker";
export type OpenAiCostTrackerSqliteEntry = {
    dateIso: string;
    bucketId: string;
    modelName: string;
    costSpent: number;
    costSaved: number;
};
export type OpenAiCostTrackerSqliteModelCost = {
    modelName: string;
    costSpent: number;
    costSaved: number;
};
export type OpenAiCostTrackerSqliteBucketCost = {
    bucketId: string;
    costSpent: number;
    costSaved: number;
    models: OpenAiCostTrackerSqliteModelCost[];
};
export type OpenAiCostTrackerSqliteCostSummary = {
    total: {
        costSpent: number;
        costSaved: number;
    };
    buckets: OpenAiCostTrackerSqliteBucketCost[];
};
/**
 * SQLite-backed cost tracker for OpenAI API calls.
 * Stores costs in a SQLite database with schema: dateIso, bucketId, modelName, costSpent, costSaved
 */
export declare class OpenAiCostTrackerSqlite extends EventEmitter {
    static EVENT: {
        BUCKET_WRITTEN: string;
    };
    private _database;
    private _dbPath;
    constructor(dbPath: string);
    /**
     * Initialize the database and create schema if needed
     */
    init(): Promise<void>;
    /**
     * Close the database connection
     */
    close(): Promise<void>;
    /**
     * Get all individual cost tracking records from the database
     */
    getAllRecords(): Promise<OpenAiCostTrackerSqliteEntry[]>;
    /**
     * Get a JSON summary of costs grouped by bucket and model using SQL aggregation
     */
    getSummaryCosts(): Promise<OpenAiCostTrackerSqliteCostSummary>;
    /**
     * Get the tracker callback function for use with OpenAI cost tracker
     */
    getTrackerCallback(): Promise<OpenAICallTrackerCallback>;
    /**
     * Callback to track OpenAI API costs and store in SQLite
     * @param bucketId - identifier for grouping costs
     * @param response - OpenAI API response
     */
    private _trackerCallback;
    /**
     * Callback to track OpenAI API costs and store in SQLite
     * @param bucketId - identifier for grouping costs
     * @param response - OpenAI API response
     */
    private _trackerCallback_EventStream;
    /**
     * Callback to track OpenAI API costs and store in SQLite
     * @param bucketId - identifier for grouping costs
     * @param response - OpenAI API response
     */
    private _trackerCallback_ApplicationJson;
    private _trackerCallback_Embeddings;
    /**
     * Callback to track OpenAI API costs and store in SQLite
     * @param bucketId - identifier for grouping costs
     * @param response - OpenAI API response
     */
    private _trackerCallbackPostProcess;
    /**
     * Print cost summary in a formatted, colorized output
     */
    static printCostSummary(summary: OpenAiCostTrackerSqliteCostSummary, { colorize }?: {
        colorize?: boolean;
    }): Promise<void>;
    /**
     * Convert cost tracking records to CSV format
     */
    static recordsToCsv(records: OpenAiCostTrackerSqliteEntry[]): string;
}