rewrite

dashboard/server/api/data/events_data/metadata_fields.ts

@@ -0,0 +1,32 @@
+
+import { EventModel } from "@schema/metrics/EventSchema";
+import {  Redis } from "~/server/services/CacheService";
+
+
+export default defineEventHandler(async event => {
+
+    const data = await getRequestData(event, { requireSchema: false });
+    if (!data) return;
+
+    const { project_id } = data;
+
+    const { name: eventName } = getQuery(event);
+    if (!eventName) return [];
+
+    const fields: string[] = await Redis.useCache({
+        key: `metadata_fields:${project_id}:${eventName}`,
+        exp: 60
+    }, async () => {
+        const eventsWithName = await EventModel.find({ project_id, name: eventName }, { metadata: 1 }, { limit: 10, sort: { created_at: -1 } });
+        const allMetadata = eventsWithName.map(e => e.metadata);
+        const allFields = new Set<string>();
+        for (const metadata of allMetadata) {
+            const keys = Object.keys(metadata || {});
+            keys.forEach(key => allFields.add(key));
+        }
+        return Array.from(allFields.values());
+    });
+
+    return fields;
+
+});