import React from 'react';

/**
 * Theme constants
 */
declare const THEME_TYPES: {
    readonly SEMANTIC: "semantic";
    readonly UI8KIT: "ui8kit";
};
declare const DEFAULT_THEME: "ui8kit";
declare const STORAGE_KEYS: {
    readonly THEME: "app-theme";
};
declare const LOCAL_STORAGE_KEY: "app-theme";

type ThemeType = typeof THEME_TYPES[keyof typeof THEME_TYPES];
/**
 * Theme state interface
 */
interface ThemeState {
    current: ThemeType;
    isLoading: boolean;
}
/**
 * Theme action types
 */
type ThemeAction = {
    type: 'SET_THEME';
    payload: ThemeType;
} | {
    type: 'TOGGLE_THEME';
} | {
    type: 'SET_LOADING';
    payload: boolean;
};

/**
 * Gets current theme
 */
declare function getTheme(): ThemeType;
/**
 * Sets current theme
 */
declare function setTheme(theme: string): void;

/**
 * Gets theme from storage (localStorage on client, url param on server)
 */
declare const getStoredTheme: () => ThemeType | null;
/**
 * Stores theme in localStorage
 */
declare const storeTheme: (theme: ThemeType) => void;
/**
 * Gets theme from URL parameter
 */
declare const getThemeFromUrl: () => ThemeType | null;
/**
 * Removes theme parameter from URL
 */
declare const removeThemeParamFromUrl: () => void;
/**
 * Gets current theme from all available sources
 * Priority: URL param > localStorage > default
 */
declare const getInitialTheme: () => ThemeType;
/**
 * Toggles between available themes
 */
declare const toggleTheme: (currentTheme: ThemeType) => ThemeType;

/**
 * Theme context
 */

interface ThemeContextType extends ThemeState {
    setTheme: (theme: ThemeType) => void;
    toggleTheme: () => void;
}
interface ThemeProviderProps {
    children: React.ReactNode;
    initialTheme?: ThemeType;
}
declare const ThemeProvider: React.FC<ThemeProviderProps>;
declare const useTheme: () => ThemeContextType;

declare const initialThemeState: ThemeState;
declare function themeReducer(state: ThemeState, action: ThemeAction): ThemeState;

export { DEFAULT_THEME, LOCAL_STORAGE_KEY, STORAGE_KEYS, THEME_TYPES, type ThemeAction, ThemeProvider, type ThemeState, type ThemeType, getInitialTheme, getStoredTheme, getTheme, getThemeFromUrl, initialThemeState, removeThemeParamFromUrl, setTheme, storeTheme, themeReducer, toggleTheme, useTheme };