import { DateRange } from '@angular/material/datepicker';
import { DATE_OPTION_TYPE } from '../constant/date-filter-const';
/**
 * @(#)select-date-option.ts Sept 08, 2023
 *
 * Defines the structure and behavior of a selectable date option,
 * used in date filtering components.
 *
 * @author Aakash Kumar
 */
export interface ISelectDateOption {
    /**
     * Label displayed in the drop-down list for this option.
     * Example: "Last 7 Days", "Today", "Custom".
     */
    optionLabel: string;
    /**
     * Type of the option, indicating how the date is determined.
     * Defaults to DATE_DIFF if not provided.
     */
    optionType?: DATE_OPTION_TYPE;
    /**
     * Number of days offset from today.
     *
     * - Positive numbers indicate future dates.
     * - Negative numbers indicate past dates.
     * - Used only when optionType is DATE_DIFF and no callback is provided.
     *
     * Example: -7 → "Last 7 Days"
     */
    dateDiff?: number;
    /**
     * Whether this option is currently selected.
     */
    isSelected: boolean;
    /**
     * Whether this option should be shown in the drop-down list.
     */
    isVisible: boolean;
    /**
     * Custom function to calculate and return a DateRange.
     * Used when optionType requires special handling beyond dateDiff.
     */
    callBackFunction?: () => DateRange<Date>;
}
/**
 * Default implementation of a selectable date option.
 * Provides default values for all fields.
 */
export declare class SelectDateOption implements ISelectDateOption {
    optionLabel: string;
    optionType: DATE_OPTION_TYPE;
    dateDiff: number;
    isSelected: boolean;
    isVisible: boolean;
    callBackFunction: () => DateRange<Date>;
}