rewrite

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

@@ -0,0 +1,43 @@
+
+import { getUserProjectFromId } from "~/server/LIVE_DEMO_DATA";
+import { EventModel } from "@schema/metrics/EventSchema";
+import { EVENT_METADATA_FIELDS_EXPIRE_TIME, Redis } from "~/server/services/CacheService";
+import { PipelineStage } from "mongoose";
+
+
+export default defineEventHandler(async event => {
+
+    const data = await getRequestData(event, { requireSchema: false });
+    if (!data) return;
+
+    const { project_id } = data;
+
+
+    const { name: eventName, field, from, to } = getQuery(event);
+
+    if (!from) return setResponseStatus(event, 400, 'from is required');
+    if (!to) return setResponseStatus(event, 400, 'to is required');
+    if (!eventName) return setResponseStatus(event, 400, 'name is required');
+    if (!field) return setResponseStatus(event, 400, 'field is required');
+
+
+    const aggregation: PipelineStage[] = [
+        {
+            $match: {
+                project_id, name: eventName,
+                created_at: {
+                    $gte: new Date(from.toString()),
+                    $lte: new Date(to.toString()),
+                }
+            }
+        },
+        { $group: { _id: `$metadata.${field}`, count: { $sum: 1 } } },
+        { $sort: { count: -1 } }
+    ]
+
+    const metadataGrouped = await EventModel.aggregate(aggregation);
+
+    return metadataGrouped;
+
+
+});