新增连板页面

src/composables/useTradeCalendar.js

@@ -0,0 +1,30 @@
+import { getTradeCalendar } from '@/api/common'
+
+let tradeCalendarPromise = null
+let tradeCalendarCache = null
+
+const normalizeTradeCalendar = (data = {}) => ({
+  open_dates: Array.isArray(data.open_dates) ? data.open_dates : [],
+  max_date: data.max_date || ''
+})
+
+export async function fetchTradeCalendar(force = false) {
+  if (tradeCalendarCache && !force) return tradeCalendarCache
+
+  if (!tradeCalendarPromise || force) {
+    tradeCalendarPromise = getTradeCalendar()
+      .then((data) => {
+        tradeCalendarCache = normalizeTradeCalendar(data)
+        return tradeCalendarCache
+      })
+      .finally(() => {
+        tradeCalendarPromise = null
+      })
+  }
+
+  return tradeCalendarPromise
+}
+
+export function getCachedTradeCalendar() {
+  return tradeCalendarCache
+}