import type { GuardianAlert } from './types.js';
export interface TelegramSettings {
    token: string | null;
    chatId: string | null;
}
/** Read TELEGRAM_BOT_TOKEN / TELEGRAM_CHAT_ID (dotenv is loaded by core/config on import). */
export declare function loadTelegramSettings(): TelegramSettings;
export declare function sendTelegramMessage(token: string, chatId: string | number, text: string): Promise<void>;
export declare function getTelegramBotInfo(token: string): Promise<{
    id: number;
    username: string;
}>;
/** Same message shape as the hosted guardian's Telegram channel. */
export declare function formatTelegramAlert(alert: GuardianAlert): string;
export declare function generateLinkCode(): string;
/**
 * Long-poll getUpdates until someone sends `/start <code>` (or the bare code)
 * to the bot, then confirm in-chat and return the chat id. Returns null on
 * timeout. Drains the update backlog first so old messages can't match.
 */
export declare function waitForTelegramLink(token: string, code: string, timeoutMs?: number): Promise<number | null>;
/** Persist a key=value into the active openbroker config file (creates it if missing). */
export declare function saveEnvVar(key: string, value: string): string;
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