fix: 初验针对修改

src/composables/systemParameters.ts

@@ -0,0 +1,43 @@
+import { fetchPublicSystemParameters, unwrapSystemSettings, type PublicSystemParameters } from '@/api/ops/systemSettings'
+
+export const SystemParameterCode = {
+  DeviceOfflineSeconds: 'device_offline_seconds',
+  PageRefreshSeconds: 'page_refresh_seconds',
+  AlertRecoveryWaitSeconds: 'alert_recovery_wait_seconds',
+  MonitoringRetentionDays: 'monitoring_retention_days',
+  OperationLogRetentionDays: 'operation_log_retention_days',
+  LoginBackgroundRotationSeconds: 'login_background_rotation_seconds',
+} as const
+
+const requiredCodes = Object.values(SystemParameterCode)
+let cached: PublicSystemParameters | null = null
+let loading: Promise<PublicSystemParameters> | null = null
+
+export async function loadSystemParameters(force = false): Promise<PublicSystemParameters> {
+  if (cached && !force) return cached
+  if (loading && !force) return loading
+  loading = fetchPublicSystemParameters().then((response) => {
+    const values = unwrapSystemSettings<PublicSystemParameters>(response)
+    if (!values || requiredCodes.some((code) => !Number.isInteger(values[code]))) {
+      throw new Error('系统参数未完整初始化')
+    }
+    cached = values
+    return values
+  })
+  try {
+    return await loading
+  } finally {
+    loading = null
+  }
+}
+
+export async function getSystemParameter(code: (typeof SystemParameterCode)[keyof typeof SystemParameterCode]): Promise<number> {
+  const values = await loadSystemParameters()
+  const value = values[code]
+  if (!Number.isInteger(value)) throw new Error(`系统参数 ${code} 不存在`)
+  return value
+}
+
+export function invalidateSystemParameters() {
+  cached = null
+}