/**
 * WS transport constants — mirrors Rust `session.rs` constants.
 */

/** Server heartbeat interval (30s) — client should send ping within this window. */
export const HEARTBEAT_INTERVAL_MS = 30_000;

/** Server heartbeat timeout (60s) — disconnect if no pong received. */
export const HEARTBEAT_TIMEOUT_MS = 60_000;

/** Max idle timeout (300s) — disconnect if no activity. */
export const MAX_IDLE_TIMEOUT_MS = 300_000;

/** Client-side ping interval — send ping every 25s (before server 30s timeout). */
export const CLIENT_PING_INTERVAL_MS = 25_000;

/** Rate limit: max messages per second per connection. */
export const MAX_MESSAGES_PER_SECOND = 1000;

/** Max text message length (64KB). */
export const MAX_TEXT_MESSAGE_LEN = 64 * 1024;

/** Deduplication window (5 minutes). */
export const DEDUP_WINDOW_MS = 5 * 60_000;

/** Reconnection base delay (1 second). */
export const RECONNECT_BASE_DELAY_MS = 1_000;

/** Reconnection max delay (30 seconds). */
export const RECONNECT_MAX_DELAY_MS = 30_000;

/** Reconnection max attempts before giving up. */
export const RECONNECT_MAX_ATTEMPTS = 20;

/** Protocol version — incremented when event types or fields change. */
export const WS_PROTOCOL_VERSION = 1;

/** Default WS endpoint path on the Rust backend. */
export const DEFAULT_WS_PATH = '/ws';

/** WS token endpoint (POST /api/ws/token). */
export const WS_TOKEN_ENDPOINT = '/api/ws/token';

/** WS token TTL (from server response). */
export const WS_TOKEN_TTL_SECONDS = 300;

/** SSE AI stream endpoint pattern. */
export const SSE_AI_STREAM_PATTERN = '/ws/ai-stream/{room_id}/{message_id}';