import { SupabaseClient } from "@supabase/supabase-js";
import { Database } from "../types/supabase";
/**
 * Generates a signed URL for a file in Supabase storage
 * @param filePath - The path to the file in storage (e.g., "events/123/image.jpg")
 * @param expiresIn - Number of seconds until the URL expires (default: 3600 = 1 hour)
 * @param supabaseClient - Optional Supabase client (will create new one if not provided)
 * @returns Promise<string | null> - The signed URL or null if error
 */
export declare function generateSignedUrl(filePath: string, expiresIn?: number, supabaseClient?: SupabaseClient<Database>): Promise<string | null>;
export declare function generateSignedUrlsBatch(filePaths: string[], expiresIn?: number, supabaseClient?: SupabaseClient<Database>): Promise<Map<string, string | null>>;
export declare function addSignedUrlsToEventsBatch(events: any[], supabaseClient?: SupabaseClient<Database>): Promise<any[]>;
export declare function addSignedUrlsToEvents(events: any[], supabaseClient?: SupabaseClient<Database>): Promise<any[]>;
/**
 * Generates a signed URL for a single event and sets it as media_url
 * @param event - Event object that may have file_path
 * @param supabaseClient - Optional Supabase client (will create new one if not provided)
 * @returns Promise<Object> - Event with signed URL set as media_url
 */
export declare function addSignedUrlToEvent(event: any, supabaseClient?: SupabaseClient<Database>): Promise<any>;