change in progress

dashboard/server/api/timeline/bouncing_rate.ts

@@ -0,0 +1,80 @@
+import { getUserProjectFromId } from "~/server/LIVE_DEMO_DATA";
+import { SessionModel } from "@schema/metrics/SessionSchema";
+import { VisitModel } from "@schema/metrics/VisitSchema";
+import { Redis } from "~/server/services/CacheService";
+import DateService from "@services/DateService";
+import mongoose from "mongoose";
+
+export default defineEventHandler(async event => {
+
+
+    const data = await getRequestData(event, { requireSchema: false, requireSlice: true });
+    if (!data) return;
+
+    const { pid, from, to, slice, project_id } = data;
+
+
+    const cacheKey = `timeline:bouncing_rate:${pid}:${from}:${to}`;
+    const cacheExp = 60 * 60; //1 hour
+
+    return await Redis.useCacheV2(cacheKey, cacheExp, async (noStore, updateExp) => {
+
+        const dateDistDays = (new Date(to).getTime() - new Date(from).getTime()) / (1000 * 60 * 60 * 24)
+        // 15 Days
+        if (slice === 'hour' && (dateDistDays > 15)) throw Error('Date gap too big for this slice');
+        // 1 Year
+        if (slice === 'day' && (dateDistDays > 365)) throw Error('Date gap too big for this slice');
+        // 3 Years
+        if (slice === 'month' && (dateDistDays > 365 * 3)) throw Error('Date gap too big for this slice');
+
+
+        const allDates = DateService.createBetweenDates(from, to, slice as any);
+
+        const result: { _id: string, count: number }[] = [];
+
+        for (const date of allDates.dates) {
+
+            const visits = await VisitModel.aggregate([
+                {
+                    $match: {
+                        project_id: project_id,
+                        created_at: {
+                            $gte: date.startOf(slice as any).toDate(),
+                            $lte: date.endOf(slice as any).toDate()
+                        }
+                    },
+                },
+                { $group: { _id: "$session", count: { $sum: 1, } } },
+            ]);
+
+            const sessions = await SessionModel.aggregate([
+                {
+                    $match: {
+                        project_id: project_id,
+                        created_at: {
+                            $gte: date.startOf(slice as any).toDate(),
+                            $lte: date.endOf(slice as any).toDate()
+                        }
+                    },
+                },
+                {
+                    $group: {
+                        _id: "$session", count: { $sum: 1, },
+                        duration: { $sum: '$duration' }
+                    }
+                },
+            ]);
+
+            const total = visits.length;
+            const bounced = sessions.filter(e => (e.duration / e.count) < 1).length;
+            const bouncing_rate = 100 / total * bounced;
+            result.push({ 
+                _id: date.toISOString(), 
+                count: bouncing_rate
+             });
+        }
+
+        return result;
+
+    });
+});