/**
 * RainViewer API client for global precipitation radar imagery
 * Free API with no authentication required
 * @see https://www.rainviewer.com/api.html
 */
import { RainViewerResponse, RainViewerFrame, ImageryFrame } from '../types/imagery.js';
export declare class RainViewerService {
    private client;
    private readonly baseUrl;
    private readonly tileHost;
    constructor();
    /**
     * Get latest precipitation radar data
     * Returns timestamps and paths for animated radar
     */
    getRadarData(): Promise<RainViewerResponse>;
    /**
     * Build tile URL for a specific frame
     * RainViewer uses tile-based system (similar to web maps)
     */
    buildTileUrl(frame: RainViewerFrame, size?: number, zoom?: number): string;
    /**
     * Build tile URL for a specific coordinate
     * Clamps latitude to Web Mercator projection range to prevent NaN tile coordinates
     */
    buildCoordinateTileUrl(frame: RainViewerFrame, latitude: number, longitude: number, zoom?: number): string;
    /**
     * Convert RainViewer frames to standard ImageryFrame format
     */
    convertFrames(frames: RainViewerFrame[], latitude: number, longitude: number): ImageryFrame[];
    /**
     * Convert RainViewer nowcast frames to ImageryFrame format, labeling each
     * as a forecast frame with its offset in minutes from the latest past frame.
     */
    convertNowcastFrames(frames: RainViewerFrame[], latestPastTime: number, latitude: number, longitude: number): ImageryFrame[];
    /**
     * Get recent precipitation radar imagery (past 2 hours)
     */
    getPrecipitationRadar(latitude: number, longitude: number, animated?: boolean): Promise<ImageryFrame[]>;
}
export declare const rainViewerService: RainViewerService;
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