add scan listener and query invalidation on tag editor save

src/renderer/api/jellyfin/jellyfin-api.ts

@@ -206,6 +206,14 @@ export const contract = c.router({
             400: jfType._response.error,
         },
     },
+    getScheduledTasks: {
+        method: 'GET',
+        path: 'ScheduledTasks',
+        responses: {
+            200: jfType._response.scheduledTasks,
+            400: jfType._response.error,
+        },
+    },
     getServerInfo: {
         method: 'GET',
         path: 'system/info',

src/renderer/api/jellyfin/jellyfin-controller.ts

@@ -1161,6 +1161,34 @@ export const JellyfinController: InternalControllerEndpoint = {
         };
     },
     getRoles: async () => [],
+    getScanStatus: async (args) => {
+        const { apiClientProps } = args;
+
+        const res = await jfApiClient(apiClientProps).getScheduledTasks();
+
+        if (res.status !== 200) {
+            throw new Error('Failed to get scan status');
+        }
+
+        const task =
+            res.body.find((t) => t.Key === 'RefreshLibrary') ||
+            res.body.find((t) => t.Name === 'Scan Media Library');
+
+        if (!task) {
+            return {
+                count: 0,
+                folderCount: 0,
+                scanning: false,
+            };
+        }
+
+        return {
+            count: 0,
+            folderCount: 0,
+            lastScan: task.LastExecutionResult?.EndTimeUtc ?? undefined,
+            scanning: task.State === 'Running' || task.State === 'Cancelling',
+        };
+    },
     getServerInfo: async (args) => {
         const { apiClientProps } = args;