feat(core): duplicated calendar subscription notification (#12364)

packages/frontend/core/src/desktop/dialogs/setting/workspace-setting/integration/calendar/setting-panel.tsx

@@ -55,9 +55,20 @@ const AddSubscription = () => {
   }, []);
 
   const handleAddSub = useCallback(() => {
+    const _url = url.trim();
+    const exists = calendar.getSubscription(_url);
+    if (exists) {
+      notify.error({
+        title: t['com.affine.integration.calendar.new-duplicate-error-title'](),
+        message:
+          t['com.affine.integration.calendar.new-duplicate-error-content'](),
+      });
+      return;
+    }
+
     setVerifying(true);
     calendar
-      .createSubscription(url)
+      .createSubscription(_url)
       .then(() => {
         setOpen(false);
         setUrl('');

packages/frontend/core/src/modules/integration/entities/calendar.ts

@@ -106,6 +106,10 @@ export class CalendarIntegration extends Entity {
     }
   }
 
+  getSubscription(url: string) {
+    return this.store.getSubscription(url);
+  }
+
   deleteSubscription(url: string) {
     this.store.removeSubscription(url);
   }

packages/frontend/core/src/modules/integration/store/calendar.ts

@@ -99,6 +99,10 @@ export class CalendarStore extends Store {
     );
   }
 
+  getSubscription(url: string) {
+    return this.getSubscriptionMap()[url];
+  }
+
   watchSubscriptionCache(url: string) {
     return this.cacheStorage.watch<string>(this.getCacheKey(url));
   }