add cache

dimensionhub/Core/DataCache.swift

@@ -0,0 +1,22 @@
+//
+//  DataCache.swift
+//  dimensionhub
+//
+//  Created by 安礼成 on 2025/2/20.
+//
+
+actor DataCache {
+    
+    public static let shared = DataCache()
+    
+    private var dateModelCache: [DateNavView.DateModel] = []
+    
+    func setDateModelCache(_ models: [DateNavView.DateModel]) {
+        self.dateModelCache = models
+    }
+    
+    func getDateModelCache() -> [DateNavView.DateModel] {
+        return self.dateModelCache
+    }
+    
+}

dimensionhub/Views/DateNavView.swift

@@ -42,14 +42,20 @@ struct DateNavView: View {
             }
         }
         .task {
-            let response = await API.getDateIndex(as: [DateNavView.DateModel].self)
-            switch response {
-            case .error(let code, let message):
-                print(code)
-                print(message)
-            case .result(let result):
-                print(result)
-                self.dateModels = result
+            let models =  await DataCache.shared.getDateModelCache()
+            if models.count > 0 {
+                self.dateModels = models
+            } else {
+                let response = await API.getDateIndex(as: [DateNavView.DateModel].self)
+                switch response {
+                case .error(let code, let message):
+                    print(code)
+                    print(message)
+                case .result(let result):
+                    print(result)
+                    self.dateModels = result
+                    await DataCache.shared.setDateModelCache(result)
+                }
             }
         }
     }