import * as i0 from "@angular/core";
export declare const DATETIME_CONFIG_KEY = "USER_DATETIME_CONFIG";
/**
 * User-selectable date/time format preset.
 * Each preset defines how dates and times are rendered across the entire platform.
 */
export interface DateTimePreset {
    id: string;
    label: string;
    dateFormat: string;
    timeFormat: '12h' | '24h';
    /** PrimeNG datepicker format string (uses mm/dd/yy syntax) */
    primeNgDateFormat: string;
    /** Intl.DateTimeFormat options for display rendering */
    intlOptions: Intl.DateTimeFormatOptions;
    /** Example output for the settings UI */
    example: string;
}
export interface DateTimeConfig {
    presetId: string;
    timezone: string;
    locale: string;
}
/** Any value that can be coerced into a Date. */
export type DateInput = Date | string | number;
export declare const DATE_TIME_PRESETS: DateTimePreset[];
export declare class DateTimeConfigService {
    private readonly _config;
    /** Current full config */
    readonly config: import("@angular/core").Signal<DateTimeConfig>;
    /** Active preset object */
    readonly preset: import("@angular/core").Signal<DateTimePreset>;
    /** PrimeNG datepicker format string — bind directly to [dateFormat] */
    readonly primeNgDateFormat: import("@angular/core").Signal<string>;
    /** Whether to show time in pickers — bind to [showTime] */
    readonly showTime: import("@angular/core").Signal<boolean>;
    /** Whether 12h format */
    readonly is12Hour: import("@angular/core").Signal<boolean>;
    /** Intl.DateTimeFormat formatter for display rendering */
    readonly formatter: import("@angular/core").Signal<Intl.DateTimeFormat>;
    /** Date-only formatter (no time component) */
    readonly dateOnlyFormatter: import("@angular/core").Signal<Intl.DateTimeFormat>;
    /** Time-only formatter */
    readonly timeOnlyFormatter: import("@angular/core").Signal<Intl.DateTimeFormat>;
    /** Current timezone */
    readonly timezone: import("@angular/core").Signal<string>;
    /** All available presets */
    readonly presets: DateTimePreset[];
    private readonly localStorage;
    constructor();
    /**
     * Format a date using the user's preferred format.
     * This is the primary method for rendering dates consistently.
     */
    formatDateTime(date: DateInput): string;
    /** Format date only (no time) */
    formatDate(date: DateInput): string;
    /** Format time only (no date) */
    formatTime(date: DateInput): string;
    /** Update the active preset */
    setPreset(presetId: string): void;
    /** Update timezone */
    setTimezone(timezone: string): void;
    /** Update locale */
    setLocale(locale: string): void;
    /** Reset to defaults */
    reset(): void;
    private _loadFromStorage;
    private _saveToStorage;
    static ɵfac: i0.ɵɵFactoryDeclaration<DateTimeConfigService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<DateTimeConfigService>;
}