import { SupabaseClient } from "@supabase/supabase-js";
import { QueryOptions, InsertOptions, UpdateOptions, DeleteOptions } from "./databaseTypes";
export declare class DatabaseService {
    private supabase;
    constructor(supabase: SupabaseClient);
    /**
     * Fetch data from a table.
     * @param table - Table name.
     * @param options - Query options.
     * @returns Supabase response data and error.
     */
    fetchData(table: string, options?: QueryOptions): Promise<{
        data: ({
            error: true;
        } & "Received a generic string")[] | null;
        error: import("@supabase/supabase-js").PostgrestError | null;
    }>;
    /**
     * Insert data into a table.
     * @param table - Table name.
     * @param values - Data to insert.
     * @param options - Insert options.
     * @returns Supabase response data and error.
     */
    insertData(table: string, values: any, options?: InsertOptions): Promise<{
        data: null;
        error: import("@supabase/supabase-js").PostgrestError | null;
    }>;
    /**
     * Update data in a table.
     * @param table - Table name.
     * @param values - Data to update.
     * @param filters - Filters to identify records to update.
     * @param options - Update options.
     * @returns Supabase response data and error.
     */
    updateData(table: string, values: any, filters: any, options?: UpdateOptions): Promise<{
        data: null;
        error: import("@supabase/supabase-js").PostgrestError | null;
    }>;
    /**
     * Delete data from a table.
     * @param table - Table name.
     * @param filters - Filters to identify records to delete.
     * @param options - Delete options.
     * @returns Supabase response data and error.
     */
    deleteData(table: string, filters: any, options?: DeleteOptions): Promise<{
        data: null;
        error: import("@supabase/supabase-js").PostgrestError | null;
    }>;
    /**
     * Call a Postgres function.
     * @param fn - Function name.
     * @param args - Arguments for the function.
     * @param options - Additional options.
     * @returns Supabase response data and error.
     */
    callFunction(fn: string, args?: any, options?: any): Promise<{
        data: any;
        error: import("@supabase/supabase-js").PostgrestError | null;
    }>;
}