import { Chart, FnFilter, Vars } from '../../../admin/src/models/Chart';
export declare class ChartService {
    private filePath;
    constructor(filePath?: string);
    configure(filePath: string): this;
    /**
     * Read the JSON file asynchronously.
     * @returns {Promise<Chart[]>} - The parsed charts array.
     */
    private read;
    /**
     * Write to the JSON file asynchronously.
     * @param {Chart[]} charts - The charts array to save.
     * @returns {Promise<void>}
     */
    private write;
    /**
     * Add a new chart.
     * @param {Chart} newChart - The chart to add.
     * @returns {Promise<void>}
     */
    create(newChart: Chart): Promise<Chart>;
    /**
     * Add multiple new charts.
     * @param {Chart[]} newCharts - The charts to add.
     * @returns {Promise<void>}
     */
    bulkCreate(newCharts: Chart[]): Promise<Chart[]>;
    /**
     * Select charts based on a filter.
     * @param {FnFilter | null} [filterFn=null] - The filter function or null to return all charts.
     * @returns {Promise<Chart[]>} - The filtered charts or all charts if no filter is provided.
     */
    select(filterFn?: FnFilter | null): Promise<Chart[]>;
    /**
     * Find a single chart based on a filter.
     * @param {FnFilter | null} [filterFn=null] - The filter function or null to find the first chart.
     * @returns {Promise<Chart | null>} - The found chart or null if not found.
     */
    findOne(filterFn?: FnFilter | null): Promise<Chart | null>;
    /**
     * Update charts based on a filter.
     * @param {FnFilter | null} [filterFn=null] - The filter function to find charts to update.
     * @param {Partial<Chart>} data - The updated properties.
     * @returns {Promise<void>}
     */
    update(filterFn: FnFilter | null, data: Partial<Chart>): Promise<Chart>;
    /**
     * Update multiple charts with specific filters.
     * @param {Array<{ FnFilter: FnFilter; updates: Partial<Chart> }>} updatesArray - The updates to apply.
     * @returns {Promise<void>}
     */
    bulkUpdate(updatesArray: {
        filterFn: FnFilter;
        updates: Partial<Chart>;
    }[]): Promise<void>;
    /**
     * Remove charts based on a filter.
     * @param {FnFilter | null} [filterFn=null] - The filter function to identify charts to delete.
     * @returns {Promise<void>}
     */
    remove(filterFn?: FnFilter | string | number | null): Promise<Chart[]>;
    /**
     * Remove multiple charts based on specific filters.
     * @param {Array<FnFilter>} filters - The filters to identify charts to delete.
     * @returns {Promise<void>}
     */
    bulkRemove(filters: FnFilter[]): Promise<void>;
    getDefaults(data: Vars[]): {};
}
declare const _default: ChartService;
export default _default;