/**
 * Unified Configuration — ~/.personal-suite/config.json
 *
 * Single config file for all modules. Each module has its own section.
 * Config is loaded lazily and cached. Writes are atomic (write to tmp, rename).
 */
export interface OAuthTokens {
    accessToken: string;
    refreshToken?: string;
    expiresAt?: number;
    clientId?: string;
    clientSecret?: string;
}
export interface ImapSmtpConfig {
    host: string;
    port: number;
    user: string;
    password: string;
    tls?: boolean;
}
export interface EmailConfig {
    provider: 'gmail' | 'outlook' | 'imap';
    oauth?: OAuthTokens;
    imap?: ImapSmtpConfig;
    smtp?: ImapSmtpConfig;
    fromName?: string;
    fromAddress?: string;
}
export interface CalDAVConfig {
    url: string;
    username: string;
    password: string;
    defaultCalendarId?: string;
}
export interface CalendarConfig {
    provider: 'google' | 'caldav';
    oauth?: OAuthTokens;
    caldav?: CalDAVConfig;
    defaultCalendarId?: string;
}
export interface TelegramConfig {
    botToken: string;
    defaultChatId?: string;
}
export interface DiscordConfig {
    botToken: string;
    defaultChannelId?: string;
}
export interface SlackConfig {
    botToken: string;
    signingSecret?: string;
    defaultChannelId?: string;
}
export interface WhatsAppConfig {
    sessionPath?: string;
}
export interface MessagingConfig {
    telegram?: TelegramConfig;
    discord?: DiscordConfig;
    slack?: SlackConfig;
    whatsapp?: WhatsAppConfig;
}
export interface SearchConfig {
    /** Self-hosted SearXNG instance URL (privacy-focused, free) */
    searxngUrl?: string;
    /** Brave Search API key (2000 queries/month free tier) */
    braveApiKey?: string;
    /** Exa API key — enables search_semantic + search_code_context (neural search) */
    exaApiKey?: string;
    /** Tavily API key — enables search_research (LLM-optimized deep research) */
    tavilyApiKey?: string;
}
export interface ImageConfig {
    /** OpenAI API key for DALL-E 3 */
    openaiApiKey?: string;
    /** fal.ai API key for Flux models */
    fluxApiKey?: string;
    /** Google AI API key for Gemini Imagen 3 */
    geminiApiKey?: string;
}
export interface SuiteConfig {
    email?: EmailConfig;
    calendar?: CalendarConfig;
    messaging?: MessagingConfig;
    search?: SearchConfig;
    image?: ImageConfig;
}
export declare function getConfigDir(): string;
export declare function getConfigPath(): string;
export declare function loadConfig(): Promise<SuiteConfig>;
export declare function saveConfig(config: SuiteConfig): Promise<void>;
export declare function updateConfig(updater: (config: SuiteConfig) => SuiteConfig): Promise<SuiteConfig>;
/**
 * Clear the in-memory config cache.
 * Useful after external config changes.
 */
export declare function clearConfigCache(): void;
export interface ModuleStatus {
    email: {
        configured: boolean;
        provider?: string;
    };
    calendar: {
        configured: boolean;
        provider?: string;
    };
    messaging: {
        configured: boolean;
        platforms: string[];
    };
    search: {
        configured: boolean;
        engines: string[];
    };
    image: {
        configured: boolean;
        providers: string[];
    };
}
export declare function getModuleStatus(): Promise<ModuleStatus>;
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