import * as gramio from 'gramio';
import { Plugin } from 'gramio';
import { FluentBundle } from '@fluent/bundle';

/**
 * Options for {@link getFluentClient}
 */
interface I18nFluentClientOptions {
    /**
     * Default locale
     * @default "en"
     */
    defaultLocale?: string;
    /**
     * The path to the folder with `*.ftl` files
     * @default "locales"
     */
    directory?: string;
}
/**
 * Fluent client
 */
interface I18nFluentClient<Bundle extends FluentBundle = FluentBundle, Languages extends string = string> {
    languages: {
        /**
         * Bundles
         */
        bundles: Map<string, Bundle>;
        /**
         * Default locale
         * @default "en"
         */
        fallback: Languages;
        /**
         * All locales
         */
        all: Languages[];
        /**
         * Current locale
         */
        current: Languages;
        /**
         * Change the current locale
         */
        change: (language: Languages) => void;
    };
    /**
     * Format pattern
     */
    t: Bundle["formatPattern"];
}
/**
 * Get fluent client
 */
declare function getFluentClient<Bundle extends FluentBundle = FluentBundle, Languages extends string = string>(options?: I18nFluentClientOptions): I18nFluentClient<Bundle, Languages>;

/**
 * This plugin provide internationalization for your bots with [Fluent](https://projectfluent.org/) syntax.
 * @example
 * ```ts
 * import { Bot } from "gramio";
 * import { i18n } from "@gramio/i18n";
 *
 * const bot = new Bot(process.env.BOT_TOKEN as string)
 *     .extend(i18n())
 *     .command("start", async (context) => {
 *         return context.send(
 *             context.t("shared-photos", {
 *                 userName: "Anna",
 *                 userGender: "female",
 *                 photoCount: 3,
 *             })
 *         );
 *     })
 *     .onError(console.error)
 *     .onStart(console.log);
 *
 * bot.start();
 * ```
 */
declare function i18n<Bundle extends FluentBundle = FluentBundle>(options?: I18nFluentClientOptions | I18nFluentClient<Bundle>): Plugin<{}, gramio.DeriveDefinitions & {
    global: {
        /** Object with localization utils and settings */
        i18n: {
            /** All languages */
            locales: string[];
            /** Current user locale */
            locale: string;
            /** Set locale to current user */
            setLocale: (lang: string, strict?: boolean) => void;
        };
        t: Bundle["formatPattern"];
    };
}>;

export { type I18nFluentClient, type I18nFluentClientOptions, getFluentClient, i18n };