/**
 * Event Types for Webhook Notifications
 *
 * Defines all events that can trigger webhook notifications.
 */
export type EventType = "question_answered" | "notebook_created" | "notebook_deleted" | "source_added" | "source_removed" | "session_created" | "session_expired" | "auth_required" | "rate_limit_hit" | "security_incident" | "quota_warning" | "audio_generated" | "batch_complete";
export interface BaseEvent {
    type: EventType;
    timestamp: string;
    source: "notebooklm-mcp";
    version: string;
}
export interface QuestionAnsweredEvent extends BaseEvent {
    type: "question_answered";
    payload: {
        question_length: number;
        answer_length: number;
        session_id: string;
        notebook_url?: string;
        duration_ms: number;
    };
}
export interface NotebookCreatedEvent extends BaseEvent {
    type: "notebook_created";
    payload: {
        notebook_url: string;
        name: string;
        source_count: number;
        topics?: string[];
    };
}
export interface NotebookDeletedEvent extends BaseEvent {
    type: "notebook_deleted";
    payload: {
        notebook_id: string;
        name: string;
    };
}
export interface SourceAddedEvent extends BaseEvent {
    type: "source_added";
    payload: {
        notebook_url: string;
        source_type: "url" | "text" | "file";
        source_title?: string;
    };
}
export interface SourceRemovedEvent extends BaseEvent {
    type: "source_removed";
    payload: {
        notebook_url: string;
        source_id: string;
    };
}
export interface SessionCreatedEvent extends BaseEvent {
    type: "session_created";
    payload: {
        session_id: string;
        notebook_url?: string;
    };
}
export interface SessionExpiredEvent extends BaseEvent {
    type: "session_expired";
    payload: {
        session_id: string;
        reason: "timeout" | "manual" | "error";
        age_seconds: number;
    };
}
export interface AuthRequiredEvent extends BaseEvent {
    type: "auth_required";
    payload: {
        reason: "expired" | "invalid" | "missing";
    };
}
export interface RateLimitHitEvent extends BaseEvent {
    type: "rate_limit_hit";
    payload: {
        limit_type: "query" | "notebook" | "api";
        current_count: number;
        limit: number;
    };
}
export interface SecurityIncidentEvent extends BaseEvent {
    type: "security_incident";
    payload: {
        severity: "low" | "medium" | "high" | "critical";
        incident_type: string;
        description: string;
        blocked?: boolean;
    };
}
export interface QuotaWarningEvent extends BaseEvent {
    type: "quota_warning";
    payload: {
        resource: "notebooks" | "sources" | "queries";
        used: number;
        limit: number;
        percent: number;
    };
}
export interface AudioGeneratedEvent extends BaseEvent {
    type: "audio_generated";
    payload: {
        notebook_url: string;
        duration_seconds?: number;
    };
}
export interface BatchCompleteEvent extends BaseEvent {
    type: "batch_complete";
    payload: {
        operation: "create_notebooks" | "sync_library";
        total: number;
        succeeded: number;
        failed: number;
    };
}
export type SystemEvent = QuestionAnsweredEvent | NotebookCreatedEvent | NotebookDeletedEvent | SourceAddedEvent | SourceRemovedEvent | SessionCreatedEvent | SessionExpiredEvent | AuthRequiredEvent | RateLimitHitEvent | SecurityIncidentEvent | QuotaWarningEvent | AudioGeneratedEvent | BatchCompleteEvent;
/**
 * Create an event with standard fields
 */
export declare function createEvent<T extends EventType>(type: T, payload: Extract<SystemEvent, {
    type: T;
}>["payload"]): SystemEvent;