import { State } from './State';
export interface Part {
    text?: string;
    data?: Uint8Array;
    mimeType?: string;
}
export declare namespace Part {
    function fromBytes(data: Uint8Array, mimeType: string): Part;
}
export interface Content {
    role: string;
    parts: Part[];
}
/**
 * Actions that can be triggered by an event
 */
export interface EventActions {
    stateDelta?: Record<string, any>;
    artifactDelta?: Record<string, any>;
    transferToAgent?: string;
    escalate?: boolean;
    skipSummarization?: boolean;
    requestedAuthConfigs?: Record<string, any>;
}
/**
 * Represents an event in a session
 */
export interface Event {
    id?: string;
    invocationId: string;
    author: string;
    content: Content;
    turnComplete?: boolean;
    partial?: boolean;
    actions?: EventActions;
    longRunningToolIds?: Set<string>;
    errorCode?: string;
    errorMessage?: string;
    interrupted?: boolean;
    timestamp?: number;
    branch?: string;
    groundingMetadata?: Record<string, any>;
}
/**
 * Represents a session interface (formerly from interfaces.ts)
 */
export interface SessionInterface {
    id: string;
    appName: string;
    userId: string;
    state: State;
    events: Event[];
}
/**
 * Represents a list of sessions
 */
export interface SessionsList {
    sessions: SessionInterface[];
}
/**
 * Interface for session services
 */
export interface SessionService {
    createSession(options: {
        appName: string;
        userId: string;
        sessionId?: string;
        state?: Record<string, any>;
    }): Promise<SessionInterface> | SessionInterface;
    getSession(options: {
        appName: string;
        userId: string;
        sessionId: string;
    }): Promise<SessionInterface | null> | SessionInterface | null;
    listSessions(options: {
        appName: string;
        userId: string;
    }): Promise<SessionsList> | SessionsList;
    deleteSession(options: {
        appName: string;
        userId: string;
        sessionId: string;
    }): Promise<void> | void;
    appendEvent(options: {
        session: SessionInterface;
        event: Event;
    }): Promise<void> | void;
}