feat: 预计最终到期时间展示

src/utils/business/expiryEstimate.ts

@@ -0,0 +1,23 @@
+import { formatDateTime } from './format'
+
+export interface ExpiryEstimate {
+  estimated_final_expires_at?: string | null
+  days_until_final_expiry?: number | null
+  expiry_estimate_status?: string | null
+  is_expiring?: boolean
+}
+
+export const getExpiryEstimateText = (estimate: ExpiryEstimate): string => {
+  if (estimate.expiry_estimate_status === 'exact') {
+    return estimate.estimated_final_expires_at
+      ? formatDateTime(estimate.estimated_final_expires_at)
+      : '-'
+  }
+
+  return estimate.expiry_estimate_status ? '待激活后起算' : '-'
+}
+
+export const getExpiryEstimateTooltip = (estimate: ExpiryEstimate): string => {
+  if (!estimate.is_expiring || estimate.days_until_final_expiry == null) return ''
+  return `剩余${estimate.days_until_final_expiry}天`
+}

src/utils/business/index.ts

@@ -7,3 +7,4 @@ export * from './validate'
 export * from './calculate'
 export * from './voucher'
 export * from './apiRateLimit'
+export * from './expiryEstimate'