New website nav.

src/app/(main)/websites/[websiteId]/(reports)/retention/Retention.tsx

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+import { ReactNode } from 'react';
+import { Grid, Row, Column, Text, Icon } from '@umami/react-zen';
+import { Users } from '@/components/icons';
+import { useMessages, useLocale, useResultQuery } from '@/components/hooks';
+import { formatDate } from '@/lib/date';
+import { formatLongNumber } from '@/lib/format';
+import { Panel } from '@/components/common/Panel';
+import { LoadingPanel } from '@/components/common/LoadingPanel';
+
+const DAYS = [1, 2, 3, 4, 5, 6, 7, 14, 21, 28];
+
+export interface RetentionProps {
+  websiteId: string;
+  startDate: Date;
+  endDate: Date;
+  days?: number[];
+}
+
+export function Retention({ websiteId, days = DAYS, startDate, endDate }: RetentionProps) {
+  const { formatMessage, labels } = useMessages();
+  const { locale } = useLocale();
+  const { data, error, isLoading } = useResultQuery('retention', {
+    websiteId,
+    startDate,
+    endDate,
+  });
+
+  const rows =
+    data?.reduce((arr: any[], row: { date: any; visitors: any; day: any }) => {
+      const { date, visitors, day } = row;
+      if (day === 0) {
+        return arr.concat({
+          date,
+          visitors,
+          records: days
+            .reduce((arr, day) => {
+              arr[day] = data.find(
+                (x: { date: any; day: number }) => x.date === date && x.day === day,
+              );
+              return arr;
+            }, [])
+            .filter(n => n),
+        });
+      }
+      return arr;
+    }, []) || [];
+
+  const totalDays = rows.length;
+
+  return (
+    <LoadingPanel data={data} isLoading={isLoading} error={error}>
+      {data && (
+        <Panel allowFullscreen height="900px">
+          <Column gap="1" width="100%" overflow="auto">
+            <Grid
+              columns="120px repeat(10, 100px)"
+              alignItems="center"
+              gap="1"
+              height="50px"
+              autoFlow="column"
+            >
+              <Column>
+                <Text weight="bold" align="center">
+                  {formatMessage(labels.cohort)}
+                </Text>
+              </Column>
+              {days.map(n => (
+                <Column key={n}>
+                  <Text weight="bold" align="center" wrap="nowrap">
+                    {formatMessage(labels.day)} {n}
+                  </Text>
+                </Column>
+              ))}
+            </Grid>
+            {rows.map(({ date, visitors, records }: any, rowIndex: number) => {
+              return (
+                <Grid key={rowIndex} columns="120px repeat(10, 100px)" gap="1" autoFlow="column">
+                  <Column justifyContent="center" gap="1">
+                    <Text weight="bold">{formatDate(date, 'PP', locale)}</Text>
+                    <Row alignItems="center" gap>
+                      <Icon>
+                        <Users />
+                      </Icon>
+                      <Text>{formatLongNumber(visitors)}</Text>
+                    </Row>
+                  </Column>
+                  {days.map(day => {
+                    if (totalDays - rowIndex < day) {
+                      return null;
+                    }
+                    const percentage = records.filter(a => a.day === day)[0]?.percentage;
+                    return (
+                      <Cell key={day}>{percentage ? `${Number(percentage).toFixed(2)}%` : ''}</Cell>
+                    );
+                  })}
+                </Grid>
+              );
+            })}
+          </Column>
+        </Panel>
+      )}
+    </LoadingPanel>
+  );
+}
+
+const Cell = ({ children }: { children: ReactNode }) => {
+  return (
+    <Column
+      justifyContent="center"
+      alignItems="center"
+      width="100px"
+      height="100px"
+      backgroundColor="2"
+      borderRadius
+    >
+      {children}
+    </Column>
+  );
+};

src/app/(main)/websites/[websiteId]/(reports)/retention/RetentionPage.tsx

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+'use client';
+import { Column } from '@umami/react-zen';
+import { Retention } from './Retention';
+import { WebsiteControls } from '@/app/(main)/websites/[websiteId]/WebsiteControls';
+import { useDateRange } from '@/components/hooks';
+import { endOfMonth, startOfMonth } from 'date-fns';
+
+export function RetentionPage({ websiteId }: { websiteId: string }) {
+  const {
+    dateRange: { startDate },
+  } = useDateRange(websiteId, { ignoreOffset: true });
+
+  const monthStartDate = startOfMonth(startDate);
+  const monthEndDate = endOfMonth(startDate);
+
+  return (
+    <Column gap>
+      <WebsiteControls websiteId={websiteId} allowDateFilter={false} allowMonthFilter />
+      <Retention websiteId={websiteId} startDate={monthStartDate} endDate={monthEndDate} />
+    </Column>
+  );
+}

src/app/(main)/websites/[websiteId]/(reports)/retention/page.tsx

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+import { Metadata } from 'next';
+import { RetentionPage } from './RetentionPage';
+
+export default async function ({ params }: { params: Promise<{ websiteId: string }> }) {
+  const { websiteId } = await params;
+
+  return <RetentionPage websiteId={websiteId} />;
+}
+
+export const metadata: Metadata = {
+  title: 'Retention',
+};