import type { SyncOperation } from '../types.js';
export type RealtimeEventType = 'operations' | 'connected' | 'heartbeat' | 'error' | 'reconnect' | 'presence:sync' | 'presence:join' | 'presence:update' | 'presence:leave' | 'ephemeral' | 'channel';
export interface RealtimeEvent<T = any> {
    type: RealtimeEventType;
    data: T;
    timestamp: number;
}
export interface OperationsEvent {
    operations: SyncOperation[];
    tables: string[];
}
export interface ErrorEvent {
    code: string;
    message: string;
}
export type RealtimeStatus = 'connected' | 'connecting' | 'disconnected' | 'fallback';
export interface RealtimeClientConfig {
    /** Enable realtime sync (default: true) */
    enabled?: boolean;
    /** SSE endpoint URL (default: '/api/sync/realtime') */
    endpoint?: string;
    /** Tables to subscribe to (default: all tables - empty array means all) */
    tables?: string[];
    /** Initial reconnect delay in ms (default: 1000) */
    reconnectInterval?: number;
    /** Maximum reconnect delay in ms (default: 30000) */
    maxReconnectInterval?: number;
    /** Max reconnect attempts before fallback (default: 5) */
    maxReconnectAttempts?: number;
    /** Heartbeat timeout in ms - disconnect if no heartbeat (default: 45000) */
    heartbeatTimeout?: number;
    /** Callback when connection status changes */
    onStatusChange?: (status: RealtimeStatus) => void;
    /** Callback when operations are received */
    onOperations?: (operations: SyncOperation[]) => void;
    /** Callback on error */
    onError?: (error: Error) => void;
}
export type RealtimeClientConfigResolved = Required<RealtimeClientConfig>;
export interface RealtimeServerConfig {
    /** Enable realtime features (default: true) */
    enabled?: boolean;
    /**
     * URL path for the SSE endpoint
     */
    path?: string;
    /** Heartbeat interval in ms (default: 30000) */
    heartbeatInterval?: number;
    /** Connection timeout in ms (default: 0 = no timeout) */
    connectionTimeout?: number;
    /** Max connections per user (default: 5) */
    maxConnectionsPerUser?: number;
    /** Custom authentication function */
    authenticate?: (request: Request) => Promise<{
        userId: string;
        clientId: string;
    } | null>;
    /** Tables allowed for realtime (default: all configured tables) */
    allowedTables?: string[];
    /** TTL for presence data in ms (default: 60000 = 60s) */
    presenceTtl?: number;
    /** TTL for generic ephemeral data in ms (default: 60000 = 60s) */
    ephemeralTtl?: number;
}
export type RealtimeServerConfigResolved = Required<RealtimeServerConfig>;
export interface RealtimeConnection {
    id: string;
    userId: string;
    clientId: string;
    tables: string[];
    controller: ReadableStreamDefaultController<Uint8Array>;
    createdAt: number;
    lastActivity: number;
}
export type RealtimeEventHandler<T = any> = (data: T) => void;
export interface RealtimeEventEmitter {
    on<T = any>(event: string, handler: RealtimeEventHandler<T>): () => void;
    off(event: string, handler: RealtimeEventHandler): void;
    emit<T = any>(event: string, data: T): void;
}
export interface PresenceData<T = any> {
    userId: string;
    clientId: string;
    channel: string;
    state: T;
    timestamp: number;
}
export interface PresenceJoinEvent<T = any> {
    userId: string;
    clientId: string;
    channel: string;
    state: T;
}
export interface PresenceUpdateEvent<T = any> {
    userId: string;
    clientId: string;
    channel: string;
    state: T;
}
export interface PresenceLeaveEvent {
    userId: string;
    clientId: string;
    channel: string;
}
export interface PresenceSyncEvent<T = any> {
    channel: string;
    presence: Record<string, T>;
}
export interface EphemeralDataEvent<T = any> {
    channel: string;
    event: string;
    data: T;
    userId: string;
    clientId: string;
}