life-echo/app-expo/src/core/config.ts

function trimTrailingSlashes(value: string): string {
  return value.replace(/\/+$/, '');
}

export const config = {
  apiBaseUrl: trimTrailingSlashes(
    process.env.EXPO_PUBLIC_API_URL ?? 'http://192.168.10.151:8000',
  ),
  wsBaseUrl: trimTrailingSlashes(
    process.env.EXPO_PUBLIC_WS_URL ?? 'ws://192.168.10.151:8000',
  ),
  isDebugMode: __DEV__,

  api: {
    timeoutMs: 30_000,
    refreshPath: '/api/auth/refresh',
  },

  ws: {
    reconnectMaxRetries: 10,
    reconnectBaseDelayMs: 1_000,
    reconnectMaxDelayMs: 30_000,
    heartbeatIntervalMs: 30_000,
    /**
     * 仅当 App 处于 `background` 连续超过该毫秒数才释放当前会话 WebSocket。
     * 短暂切到其它应用再返回时保持连接，避免反复重连。
     */
    backgroundDisconnectAfterMs: 300_000,
  },
} as const;