refactor: replace bar chart with pie chart for frustration trend

components/behavior/FrustrationTrend.tsx

@@ -1,7 +1,22 @@
 'use client'
 
-import { BarChart, Bar, XAxis, YAxis, Tooltip, ResponsiveContainer, Cell } from 'recharts'
 import { TrendUp } from '@phosphor-icons/react'
+import { Pie, PieChart } from 'recharts'
+
+import {
+  Card,
+  CardContent,
+  CardDescription,
+  CardFooter,
+  CardHeader,
+  CardTitle,
+} from '@/components/ui/card'
+import {
+  ChartContainer,
+  ChartTooltip,
+  ChartTooltipContent,
+  type ChartConfig,
+} from '@/components/charts'
 import type { FrustrationSummary } from '@/lib/api/stats'
 
 interface FrustrationTrendProps {
@@ -16,131 +31,65 @@ function SkeletonCard() {
         <div className="h-5 w-36 bg-neutral-200 dark:bg-neutral-700 rounded" />
         <div className="h-4 w-48 bg-neutral-200 dark:bg-neutral-700 rounded" />
       </div>
-      <div className="flex-1 min-h-[270px] animate-pulse flex items-end gap-6 justify-center pb-8">
-        {[120, 80, 140, 100].map((h, i) => (
-          <div key={i} className="w-12 bg-neutral-200 dark:bg-neutral-700 rounded-t" style={{ height: h }} />
-        ))}
+      <div className="flex-1 min-h-[270px] animate-pulse flex items-center justify-center">
+        <div className="w-[200px] h-[200px] rounded-full bg-neutral-200 dark:bg-neutral-700" />
       </div>
     </div>
   )
 }
 
+const chartConfig = {
+  count: {
+    label: 'Count',
+  },
+  rage_clicks: {
+    label: 'Rage Clicks',
+    color: '#FD5E0F',
+  },
+  dead_clicks: {
+    label: 'Dead Clicks',
+    color: '#F59E0B',
+  },
+  prev_rage_clicks: {
+    label: 'Prev Rage Clicks',
+    color: '#78350F',
+  },
+  prev_dead_clicks: {
+    label: 'Prev Dead Clicks',
+    color: '#92400E',
+  },
+} satisfies ChartConfig
+
 export default function FrustrationTrend({ summary, loading }: FrustrationTrendProps) {
   if (loading || !summary) return <SkeletonCard />
 
   const hasData = summary.rage_clicks > 0 || summary.dead_clicks > 0 ||
     summary.prev_rage_clicks > 0 || summary.prev_dead_clicks > 0
 
-  const chartData = [
-    {
-      label: 'Rage',
-      current: summary.rage_clicks,
-      previous: summary.prev_rage_clicks,
-    },
-    {
-      label: 'Dead',
-      current: summary.dead_clicks,
-      previous: summary.prev_dead_clicks,
-    },
-  ]
-
   const totalCurrent = summary.rage_clicks + summary.dead_clicks
   const totalPrevious = summary.prev_rage_clicks + summary.prev_dead_clicks
   const totalChange = totalPrevious > 0
     ? Math.round(((totalCurrent - totalPrevious) / totalPrevious) * 100)
     : null
 
-  return (
-    <div className="bg-white dark:bg-neutral-900 border border-neutral-200 dark:border-neutral-800 rounded-2xl p-6 h-full flex flex-col">
-      <div className="flex items-center justify-between mb-1">
-        <h3 className="text-lg font-semibold text-neutral-900 dark:text-white">
-          Frustration Trend
-        </h3>
-      </div>
-      <p className="text-sm text-neutral-500 dark:text-neutral-400 mb-4">
-        Current vs. previous period comparison
-      </p>
+  const chartData = [
+    { type: 'rage_clicks', count: summary.rage_clicks, fill: 'var(--color-rage_clicks)' },
+    { type: 'dead_clicks', count: summary.dead_clicks, fill: 'var(--color-dead_clicks)' },
+    { type: 'prev_rage_clicks', count: summary.prev_rage_clicks, fill: 'var(--color-prev_rage_clicks)' },
+    { type: 'prev_dead_clicks', count: summary.prev_dead_clicks, fill: 'var(--color-prev_dead_clicks)' },
+  ]
 
-      {hasData ? (
-        <div className="flex-1 min-h-[270px] flex flex-col">
-          {/* Summary line */}
-          <div className="flex items-baseline gap-2 mb-6">
-            <span className="text-2xl font-bold text-neutral-900 dark:text-white tabular-nums">
-              {totalCurrent.toLocaleString()}
-            </span>
-            <span className="text-sm text-neutral-400 dark:text-neutral-500">
-              total signals
-            </span>
-            {totalChange !== null && (
-              <span className={`text-xs font-medium ${
-                totalChange > 0
-                  ? 'text-red-600 dark:text-red-400'
-                  : totalChange < 0
-                    ? 'text-green-600 dark:text-green-400'
-                    : 'text-neutral-500 dark:text-neutral-400'
-              }`}>
-                {totalChange > 0 ? '+' : ''}{totalChange}%
-              </span>
-            )}
-            {totalChange === null && totalCurrent > 0 && (
-              <span className="text-xs font-medium bg-brand-orange/10 text-brand-orange px-1.5 py-0.5 rounded">
-                New
-              </span>
-            )}
-          </div>
-
-          {/* Chart */}
-          <div className="flex-1">
-            <ResponsiveContainer width="100%" height="100%">
-              <BarChart data={chartData} barGap={4} barCategoryGap="30%">
-                <XAxis
-                  dataKey="label"
-                  axisLine={false}
-                  tickLine={false}
-                  tick={{ fill: '#a3a3a3', fontSize: 12 }}
-                />
-                <YAxis hide />
-                <Tooltip
-                  cursor={{ fill: 'transparent' }}
-                  contentStyle={{
-                    backgroundColor: '#171717',
-                    border: '1px solid #404040',
-                    borderRadius: 8,
-                    fontSize: 12,
-                    color: '#fff',
-                  }}
-                  formatter={(value: number, name: string) => [
-                    value.toLocaleString(),
-                    name === 'current' ? 'Current' : 'Previous',
-                  ]}
-                />
-                <Bar dataKey="previous" radius={[4, 4, 0, 0]} maxBarSize={40}>
-                  {chartData.map((_, i) => (
-                    <Cell key={i} fill="#404040" />
-                  ))}
-                </Bar>
-                <Bar dataKey="current" radius={[4, 4, 0, 0]} maxBarSize={40}>
-                  {chartData.map((_, i) => (
-                    <Cell key={i} fill="#FD5E0F" />
-                  ))}
-                </Bar>
-              </BarChart>
-            </ResponsiveContainer>
-          </div>
-
-          {/* Legend */}
-          <div className="flex items-center justify-center gap-6 mt-4 text-xs text-neutral-400 dark:text-neutral-500">
-            <div className="flex items-center gap-1.5">
-              <div className="w-2.5 h-2.5 rounded-sm bg-[#FD5E0F]" />
-              <span>Current period</span>
-            </div>
-            <div className="flex items-center gap-1.5">
-              <div className="w-2.5 h-2.5 rounded-sm bg-[#404040]" />
-              <span>Previous period</span>
-            </div>
-          </div>
+  if (!hasData) {
+    return (
+      <div className="bg-white dark:bg-neutral-900 border border-neutral-200 dark:border-neutral-800 rounded-2xl p-6 h-full flex flex-col">
+        <div className="flex items-center justify-between mb-1">
+          <h3 className="text-lg font-semibold text-neutral-900 dark:text-white">
+            Frustration Trend
+          </h3>
         </div>
-      ) : (
+        <p className="text-sm text-neutral-500 dark:text-neutral-400 mb-4">
+          Current vs. previous period comparison
+        </p>
         <div className="flex-1 min-h-[270px] flex flex-col items-center justify-center text-center px-6 py-8 gap-4">
           <div className="rounded-full bg-neutral-100 dark:bg-neutral-800 p-4">
             <TrendUp className="w-8 h-8 text-neutral-500 dark:text-neutral-400" />
@@ -152,7 +101,53 @@ export default function FrustrationTrend({ summary, loading }: FrustrationTrendP
             Frustration trend data will appear here once rage clicks or dead clicks are detected across periods.
           </p>
         </div>
-      )}
-    </div>
+      </div>
+    )
+  }
+
+  return (
+    <Card className="flex flex-col h-full">
+      <CardHeader className="items-center pb-0">
+        <CardTitle>Frustration Trend</CardTitle>
+        <CardDescription>Current vs. previous period</CardDescription>
+      </CardHeader>
+      <CardContent className="flex-1 pb-0">
+        <ChartContainer
+          config={chartConfig}
+          className="mx-auto aspect-square max-h-[250px]"
+        >
+          <PieChart>
+            <ChartTooltip
+              cursor={false}
+              content={<ChartTooltipContent hideLabel />}
+            />
+            <Pie
+              data={chartData}
+              dataKey="count"
+              nameKey="type"
+              stroke="0"
+            />
+          </PieChart>
+        </ChartContainer>
+      </CardContent>
+      <CardFooter className="flex-col gap-2 text-sm">
+        <div className="flex items-center gap-2 leading-none font-medium">
+          {totalChange !== null ? (
+            <>
+              {totalChange > 0 ? 'Up' : totalChange < 0 ? 'Down' : 'No change'} by {Math.abs(totalChange)}% vs previous period <TrendUp className="h-4 w-4" />
+            </>
+          ) : totalCurrent > 0 ? (
+            <>
+              {totalCurrent.toLocaleString()} new signals this period <TrendUp className="h-4 w-4" />
+            </>
+          ) : (
+            'No frustration signals detected'
+          )}
+        </div>
+        <div className="leading-none text-muted-foreground">
+          {totalCurrent.toLocaleString()} total signals in current period
+        </div>
+      </CardFooter>
+    </Card>
   )
 }