import { Connection } from 'mongoose';
import { LikeModuleOptions } from './like-module-options.interface';
/**
 * LikeService manages persistence and business logic
 * for adding, removing, and verifying likes on resource entities.
 *
 * Why: Encapsulates MongoDB operations and ensures consistent handling
 * of like-related behavior across all resources that support likes.
 */
export declare class LikeService {
    private readonly moduleOptions;
    private readonly connection;
    private readonly likeableModel;
    /**
     * Constructs the LikeService with a configured model instance.
     *
     * Why: Using the provided Mongoose connection and model options ensures
     * that likes are tied to the correct resource collection dynamically.
     *
     * @param {LikeModuleOptions} moduleOptions - Config for the likeable resource model.
     * @param {Connection} connection - Mongoose database connection.
     */
    constructor(moduleOptions: LikeModuleOptions, connection: Connection);
    /**
     * Adds a like from the specified account to a resource.
     *
     * @param {string} resourceId - The resource’s ID.
     * @param {string} accountId - The account ID adding the like.
     * @returns {Promise<number>} The updated like count.
     */
    addLike(resourceId: string, accountId: string): Promise<number>;
    /**
     * Removes a like from the specified account on a resource.
     *
     * @param {string} resourceId - The resource’s ID.
     * @param {string} accountId - The account ID removing the like.
     * @returns {Promise<number>} The updated like count.
     */
    removeLike(resourceId: string, accountId: string): Promise<number>;
    /**
     * Verifies whether a given account has liked a resource.
     *
     * @param {string} resourceId - The resource ID.
     * @param {string} accountId - The account ID to check.
     * @returns {Promise<boolean>} True if the account has liked the resource.
     */
    hasLiked(resourceId: string, accountId: string): Promise<boolean>;
}