import { HttpTransportConfig, HttpTransport } from '@loglayer/transport-http';

/**
 * Configuration options for the VictoriaLogs transport.
 * This is essentially a wrapper around HttpTransport with VictoriaLogs specific defaults.
 */
interface VictoriaLogsTransportConfig extends Omit<HttpTransportConfig, "url" | "payloadTemplate"> {
    /**
     * The VictoriaLogs host URL (e.g., http://localhost:9428)
     * The /insert/jsonline path will be automatically appended
     * @default "http://localhost:9428"
     */
    url?: string;
    /**
     * Function to transform log data into the payload format (optional, defaults to VictoriaLogs format)
     */
    payloadTemplate?: (data: {
        logLevel: string;
        message: string;
        data?: Record<string, any>;
    }) => string;
    /**
     * Function to generate stream-level fields for VictoriaLogs
     * The keys of the returned object will be used as the values for the _stream_fields parameter
     * @default () => ({})
     */
    streamFields?: () => Record<string, string>;
    /**
     * Function to generate the timestamp for the _time field
     * @default () => new Date().toISOString()
     */
    timestamp?: () => string;
    /**
     * Custom HTTP query parameters for VictoriaLogs ingestion
     * @see https://docs.victoriametrics.com/victorialogs/data-ingestion/#http-parameters
     */
    httpParameters?: Record<string, string>;
}
/**
 * VictoriaLogs transport for LogLayer.
 *
 * This transport is a thin wrapper around the HttpTransport that provides
 * VictoriaLogs specific defaults and configuration. It uses the VictoriaLogs
 * JSON stream API to send logs.
 *
 * @see https://docs.victoriametrics.com/victorialogs/data-ingestion/#json-stream-api
 */
declare class VictoriaLogsTransport extends HttpTransport {
    constructor(config?: VictoriaLogsTransportConfig);
}

export { VictoriaLogsTransport, type VictoriaLogsTransportConfig };