import type { StravaActivity } from "../strava/types.js";
/**
 * Insert or replace a Strava activity row into local `activities` table.
 *
 * The full activity object is saved in the `raw_json` column and `synced_at`
 * is set to the current timestamp.
 *
 * @param activity - The Strava activity to persist (will be stored and indexed by `id`)
 */
export declare function insertActivity(activity: StravaActivity): void;
/**
 * Inserts or replaces an athlete row in the local database.
 *
 * @param athlete - Athlete data to persist. Fields:
 *   - `id`: Strava athlete identifier
 *   - `firstname`: Athlete's first name
 *   - `lastname`: Athlete's last name
 *   - `weight` (optional): Athlete weight (if available)
 *   - `ftp` (optional): Athlete functional threshold power (if available)
 *
 * This stores the provided fields, the full athlete object as `raw_json`,
 * and sets `updated_at` to the current time.
 */
export declare function insertAthlete(athlete: {
    id: number;
    firstname: string;
    lastname: string;
    weight?: number;
    ftp?: number;
}): void;