refactor: extract summary stats into separate component

frontend/src/components/SummaryStats.tsx

@@ -0,0 +1,215 @@
+import { useState } from "react";
+import {
+  LineChart,
+  Line,
+  XAxis,
+  YAxis,
+  Tooltip,
+  CartesianGrid,
+  ResponsiveContainer
+} from "recharts";
+
+import ActivityHeatmap from "../stats/ActivityHeatmap";
+import { ReactWordcloud } from '@cp949/react-wordcloud';
+import StatsStyling from "../styles/stats_styling";
+import Card from "../components/Card";
+import UserModal from "../components/UserModal";
+
+import { 
+  type SummaryResponse, 
+  type FrequencyWord, 
+  type UserAnalysisResponse, 
+  type TimeAnalysisResponse,
+  type ContentAnalysisResponse,
+  type User
+} from '../types/ApiTypes'
+
+const styles = StatsStyling;
+
+type SummaryStatsProps = {
+    userData: UserAnalysisResponse | null;
+    timeData: TimeAnalysisResponse | null;
+    contentData: ContentAnalysisResponse | null;
+    summary: SummaryResponse | null;
+}
+
+function formatDateRange(startUnix: number, endUnix: number) {
+  const start = new Date(startUnix * 1000);
+  const end = new Date(endUnix * 1000);
+
+  const fmt = (d: Date) =>
+    d.toLocaleDateString(undefined, {
+      year: "numeric",
+      month: "short",
+      day: "2-digit",
+    });
+
+  return `${fmt(start)} → ${fmt(end)}`;
+}
+
+function convertFrequencyData(data: FrequencyWord[]) {
+    return data.map((d: FrequencyWord) => ({
+        text: d.word,
+        value: d.count,
+      }))
+}
+
+const SummaryStats = ({userData, timeData, contentData, summary}: SummaryStatsProps) => {
+    const [selectedUser, setSelectedUser] = useState<string | null>(null);
+    const selectedUserData: User | null = userData?.users.find((u) => u.author === selectedUser) ?? null;
+
+    return (
+    <div style={styles.page}>
+
+        {/* main grid*/}
+        <div style={{ ...styles.container, ...styles.grid}}>
+            <Card
+            label="Total Events"
+            value={summary?.total_events ?? "—"}
+            sublabel="Posts + comments"
+            style={{
+                gridColumn: "span 4"
+            }}
+            />
+            <Card
+            label="Unique Users"
+            value={summary?.unique_users ?? "—"}
+            sublabel="Distinct authors"
+            style={{
+                gridColumn: "span 4"
+            }}
+            />
+            <Card
+            label="Posts / Comments"
+            value={
+                summary
+                ? `${summary.total_posts} / ${summary.total_comments}`
+                : "—"
+            }
+            sublabel={`Comments per post: ${summary?.comments_per_post ?? "—"}`}
+            style={{
+                gridColumn: "span 4"
+            }}
+            />
+
+            <Card
+            label="Time Range"
+            value={
+                summary?.time_range
+                ? formatDateRange(summary.time_range.start, summary.time_range.end)
+                : "—"
+            }
+            sublabel="Based on dataset timestamps"
+            style={{
+                gridColumn: "span 4"
+            }}
+            />
+
+            <Card
+            label="Lurker Ratio"
+            value={
+                typeof summary?.lurker_ratio === "number"
+                ? `${Math.round(summary.lurker_ratio * 100)}%`
+                : "—"
+            }
+            sublabel="Users with only 1 event"
+            style={{
+                gridColumn: "span 4"
+            }}
+            />
+
+            <Card
+            label="Sources"
+            value={summary?.sources?.length ?? "—"}
+            sublabel={
+                summary?.sources?.length
+                ? summary.sources.slice(0, 3).join(", ") +
+                    (summary.sources.length > 3 ? "…" : "")
+                : "—"
+            }
+            style={{
+                gridColumn: "span 4"
+            }}
+            />
+
+        {/* events per day */}
+        <div style={{ ...styles.card, gridColumn: "span 5" }}>
+            <h2 style={styles.sectionTitle}>Events per Day</h2>
+            <p style={styles.sectionSubtitle}>Trend of activity over time</p>
+
+            <div style={styles.chartWrapper}>
+            <ResponsiveContainer width="100%" height="100%">
+                <LineChart data={timeData?.events_per_day.filter((d) => new Date(d.date) >= new Date('2026-01-10'))}>
+                <CartesianGrid strokeDasharray="3 3" />
+                <XAxis dataKey="date" />
+                <YAxis />
+                <Tooltip />
+                <Line type="monotone" dataKey="count" name="Events" />
+                </LineChart>
+            </ResponsiveContainer>
+            </div>
+        </div>
+
+        {/* Word Cloud */}
+        <div style={{ ...styles.card, gridColumn: "span 4" }}>
+            <h2 style={styles.sectionTitle}>Word Cloud</h2>
+            <p style={styles.sectionSubtitle}>Most common terms across events</p>
+
+            <div style={styles.chartWrapper}>
+            <ReactWordcloud
+                words={convertFrequencyData(contentData?.word_frequencies ?? [])}
+                options={{
+                rotations: 2,
+                rotationAngles: [0, 90],
+                fontSizes: [14, 60],
+                enableTooltip: true,
+                }}
+            />
+            </div>
+        </div>
+
+        {/* Top Users */}
+        <div style={{...styles.card, ...styles.scrollArea, gridColumn: "span 3",
+        }}
+        >
+            <h2 style={styles.sectionTitle}>Top Users</h2>
+            <p style={styles.sectionSubtitle}>Most active authors</p>
+
+            <div style={styles.topUsersList}>
+            {userData?.top_users.slice(0, 100).map((item) => (
+                <div
+                key={`${item.author}-${item.source}`}
+                style={{ ...styles.topUserItem, cursor: "pointer" }}
+                onClick={() => setSelectedUser(item.author)}
+                >
+                <div style={styles.topUserName}>{item.author}</div>
+                <div style={styles.topUserMeta}>
+                    {item.source} • {item.count} events
+                </div>
+                </div>
+            ))}
+            </div>
+        </div>
+
+        {/* Heatmap */}
+        <div style={{ ...styles.card, gridColumn: "span 12" }}>
+            <h2 style={styles.sectionTitle}>Heatmap</h2>
+            <p style={styles.sectionSubtitle}>Activity density across time</p>
+
+            <div style={styles.heatmapWrapper}>
+            <ActivityHeatmap data={timeData?.weekday_hour_heatmap ?? []} />
+            </div>
+        </div>
+        </div>
+
+        <UserModal
+        open={!!selectedUser}
+        onClose={() => setSelectedUser(null)}
+        username={selectedUser ?? ""}
+        userData={selectedUserData}
+        />
+    </div>
+    );
+}
+
+export default SummaryStats;

frontend/src/pages/Stats.tsx

@@ -1,55 +1,17 @@
 import { useEffect, useState, useRef } from "react";
 import axios from "axios";
-import {
-  LineChart,
-  Line,
-  XAxis,
-  YAxis,
-  Tooltip,
-  CartesianGrid,
-  ResponsiveContainer
-} from "recharts";
-
-import ActivityHeatmap from "../stats/ActivityHeatmap";
-import { ReactWordcloud } from '@cp949/react-wordcloud';
 import StatsStyling from "../styles/stats_styling";
-import Card from "../components/Card";
+import SummaryStats from "../components/SummaryStats";
-import UserModal from "../components/UserModal";
 
 import { 
-  type TopUser, 
   type SummaryResponse, 
-  type FrequencyWord, 
   type UserAnalysisResponse, 
   type TimeAnalysisResponse,
-  type ContentAnalysisResponse,
+  type ContentAnalysisResponse
-  type FilterResponse,
-  type User
 } from '../types/ApiTypes'
 
 const styles = StatsStyling;
 
-function formatDateRange(startUnix: number, endUnix: number) {
-  const start = new Date(startUnix * 1000);
-  const end = new Date(endUnix * 1000);
-
-  const fmt = (d: Date) =>
-    d.toLocaleDateString(undefined, {
-      year: "numeric",
-      month: "short",
-      day: "2-digit",
-    });
-
-  return `${fmt(start)} → ${fmt(end)}`;
-}
-
-function convertFrequencyData(data: FrequencyWord[]) {
-    return data.map((d: FrequencyWord) => ({
-        text: d.word,
-        value: d.count,
-      }))
-}
-
 const StatPage = () => {
   const [error, setError] = useState('');
   const [loading, setLoading] = useState(false);
@@ -59,9 +21,6 @@ const StatPage = () => {
   const [contentData, setContentData] = useState<ContentAnalysisResponse | null>(null);
   const [summary, setSummary] = useState<SummaryResponse | null>(null);
 
-  const [selectedUser, setSelectedUser] = useState<string | null>(null);
-  const selectedUserData: User | null = userData?.users.find((u) => u.author === selectedUser) ?? null;
-
 
   const searchInputRef = useRef<HTMLInputElement>(null);
   const beforeDateRef = useRef<HTMLInputElement>(null);
@@ -89,17 +48,11 @@ const StatPage = () => {
 
   const onSubmitFilters = () => {
     const query = searchInputRef.current?.value ?? "";
-    const startDate = beforeDateRef.current?.value;
-    const endDate = afterDateRef.current?.value;
 
     Promise.all([
       axios.post("http://localhost:5000/filter/search", {
         query: query
       }),
-      //axios.post("http://localhost:5000/filter/time", {
-        //start: startDate,
-        //end: endDate
-      //})
     ]) 
     .then(() => {
       getStats();
@@ -165,153 +118,13 @@ return (
       <div style={{ fontSize: 13, color: "#6b7280" }}>Analytics Dashboard</div>
     </div>
 
-    {/* main grid*/}
+    <SummaryStats 
-    <div style={{ ...styles.container, ...styles.grid}}>
+      userData={userData}
-        <Card
+      timeData={timeData}
-          label="Total Events"
+      contentData={contentData}
-          value={summary?.total_events ?? "—"}
+      summary={summary}
-          sublabel="Posts + comments"
-          style={{
-            gridColumn: "span 4"
-          }}
-        />
-        <Card
-          label="Unique Users"
-          value={summary?.unique_users ?? "—"}
-          sublabel="Distinct authors"
-          style={{
-            gridColumn: "span 4"
-          }}
-        />
-        <Card
-          label="Posts / Comments"
-          value={
-            summary
-              ? `${summary.total_posts} / ${summary.total_comments}`
-              : "—"
-          }
-          sublabel={`Comments per post: ${summary?.comments_per_post ?? "—"}`}
-          style={{
-            gridColumn: "span 4"
-          }}
-        />
-
-        <Card
-          label="Time Range"
-          value={
-            summary?.time_range
-              ? formatDateRange(summary.time_range.start, summary.time_range.end)
-              : "—"
-          }
-          sublabel="Based on dataset timestamps"
-          style={{
-            gridColumn: "span 4"
-          }}
-        />
-
-        <Card
-          label="Lurker Ratio"
-          value={
-            typeof summary?.lurker_ratio === "number"
-              ? `${Math.round(summary.lurker_ratio * 100)}%`
-              : "—"
-          }
-          sublabel="Users with only 1 event"
-          style={{
-            gridColumn: "span 4"
-          }}
-        />
-
-        <Card
-          label="Sources"
-          value={summary?.sources?.length ?? "—"}
-          sublabel={
-            summary?.sources?.length
-              ? summary.sources.slice(0, 3).join(", ") +
-                (summary.sources.length > 3 ? "…" : "")
-              : "—"
-          }
-          style={{
-            gridColumn: "span 4"
-          }}
-        />
-
-      {/* events per day */}
-      <div style={{ ...styles.card, gridColumn: "span 5" }}>
-        <h2 style={styles.sectionTitle}>Events per Day</h2>
-        <p style={styles.sectionSubtitle}>Trend of activity over time</p>
-
-        <div style={styles.chartWrapper}>
-          <ResponsiveContainer width="100%" height="100%">
-            <LineChart data={timeData?.events_per_day.filter((d) => new Date(d.date) >= new Date('2026-01-10'))}>
-              <CartesianGrid strokeDasharray="3 3" />
-              <XAxis dataKey="date" />
-              <YAxis />
-              <Tooltip />
-              <Line type="monotone" dataKey="count" name="Events" />
-            </LineChart>
-          </ResponsiveContainer>
-        </div>
-      </div>
-
-      {/* Word Cloud */}
-      <div style={{ ...styles.card, gridColumn: "span 4" }}>
-        <h2 style={styles.sectionTitle}>Word Cloud</h2>
-        <p style={styles.sectionSubtitle}>Most common terms across events</p>
-
-        <div style={styles.chartWrapper}>
-          <ReactWordcloud
-            words={convertFrequencyData(contentData?.word_frequencies ?? [])}
-            options={{
-              rotations: 2,
-              rotationAngles: [0, 90],
-              fontSizes: [14, 60],
-              enableTooltip: true,
-            }}
-          />
-        </div>
-      </div>
-
-      {/* Top Users */}
-      <div style={{...styles.card, ...styles.scrollArea, gridColumn: "span 3",
-      }}
-      >
-        <h2 style={styles.sectionTitle}>Top Users</h2>
-        <p style={styles.sectionSubtitle}>Most active authors</p>
-
-        <div style={styles.topUsersList}>
-          {userData?.top_users.slice(0, 100).map((item) => (
-            <div
-              key={`${item.author}-${item.source}`}
-              style={{ ...styles.topUserItem, cursor: "pointer" }}
-              onClick={() => setSelectedUser(item.author)}
-            >
-              <div style={styles.topUserName}>{item.author}</div>
-              <div style={styles.topUserMeta}>
-                {item.source} • {item.count} events
-              </div>
-            </div>
-          ))}
-        </div>
-      </div>
-
-      {/* Heatmap */}
-      <div style={{ ...styles.card, gridColumn: "span 12" }}>
-        <h2 style={styles.sectionTitle}>Heatmap</h2>
-        <p style={styles.sectionSubtitle}>Activity density across time</p>
-
-        <div style={styles.heatmapWrapper}>
-          <ActivityHeatmap data={timeData?.weekday_hour_heatmap ?? []} />
-        </div>
-      </div>
-    </div>
-
-    <UserModal
-      open={!!selectedUser}
-      onClose={() => setSelectedUser(null)}
-      username={selectedUser ?? ""}
-      userData={selectedUserData}
     />
+
   </div>
 );
 }