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feat(dashboard): replace bar charts with mandal-level pie charts #36

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feat(dashboard): replace bar charts with mandal-level pie charts #36

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120 changes: 120 additions & 0 deletions frontend/src/app/(authenticated)/dashboard/components/mandal-pie-chart.tsx
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Original file line number Diff line number Diff line change
@@ -0,0 +1,120 @@
"use client";

import {
ChartContainer,
ChartTooltip,
ChartTooltipContent,
type ChartConfig,
} from "@/components/ui/chart";
import { Pie, PieChart, Cell } from "recharts";
import { useLanguage } from "@/i18n/LanguageContext";

export type MandalPieItem = {
mandalId: string;
mandalName: string;
mandalNameTelugu: string;
value: number;
};

interface MandalPieChartProps {
title: string;
data: MandalPieItem[];
labelPrefix: string;
}

const PIE_COLORS = [
"#22d3ee", // cyan
"#3b82f6", // blue
"#f59e0b", // amber
"#ef4444", // red
"#a855f7", // purple
"#ec4899", // pink
"#10b981", // emerald
"#f97316", // orange
"#6366f1", // indigo
"#14b8a6", // teal
];

export function MandalPieChart({ title, data, labelPrefix }: MandalPieChartProps) {
const { lang } = useLanguage();

// Build config for ChartContainer
const config: ChartConfig = {};
data.forEach((item, idx) => {
config[item.mandalName] = {
label: lang === "te" ? item.mandalNameTelugu : item.mandalName,
color: PIE_COLORS[idx % PIE_COLORS.length],
};
});

// Build pie data
const pieData = data.map((item, idx) => ({
name: lang === "te" ? item.mandalNameTelugu : item.mandalName,
value: item.value,
fill: PIE_COLORS[idx % PIE_COLORS.length],
}));

const hasData = pieData.some((d) => d.value > 0);

return (
<div className="rounded-lg border bg-card p-4 shadow-sm flex flex-col" style={{ background: "hsl(var(--card))" }}>
<h3 className="text-base font-semibold mb-4 text-card-foreground">
{title}
</h3>

{hasData ? (
<ChartContainer config={config} className="mx-auto aspect-square w-full max-w-[280px]">
<PieChart>
<ChartTooltip
content={
<ChartTooltipContent
formatter={(value) => (
<span className="font-medium">₹{Number(value).toLocaleString("en-IN")}</span>
)}
/>
}
/>
<Pie
data={pieData}
dataKey="value"
nameKey="name"
cx="50%"
cy="50%"
innerRadius="30%"
outerRadius="80%"
paddingAngle={2}
strokeWidth={2}
stroke="hsl(var(--card))"
>
{pieData.map((entry, index) => (
<Cell key={`cell-${index}`} fill={entry.fill} />
))}
</Pie>
</PieChart>
</ChartContainer>
) : (
<div className="flex items-center justify-center h-[200px] text-muted-foreground text-sm">
—
</div>
)}

{/* Custom Legend */}
<div className="mt-4 space-y-2">
{data.map((item, idx) => (
<div key={item.mandalId} className="flex items-center gap-2 text-sm">
<span
className="inline-block h-3 w-3 rounded-sm shrink-0"
style={{ backgroundColor: PIE_COLORS[idx % PIE_COLORS.length] }}
/>
<span className="text-muted-foreground truncate flex-1">
{lang === "te" ? item.mandalNameTelugu : item.mandalName}
</span>
<span className="text-card-foreground font-medium whitespace-nowrap">
{labelPrefix} ₹{item.value.toLocaleString("en-IN")}
</span>
</div>
))}
</div>
</div>
);
}
73 changes: 51 additions & 22 deletions frontend/src/app/(authenticated)/dashboard/page.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,7 @@

import { useState, useEffect } from "react";
import { ContentLayout } from "../../../components/admin-panel/content-layout";
import { VillageTransactionsChart } from "./components/village-transactions-chart";
import { MandalPieChart, MandalPieItem } from "./components/mandal-pie-chart";
import { Loader2 } from "lucide-react";
import { useLanguage } from "@/i18n/LanguageContext";

Expand All @@ -14,8 +14,18 @@ type VillageSummary = {
totalLoans: number;
};

type MandalSummary = {
mandalId: string;
mandalName: string;
mandalNameTelugu: string;
totalDeposits: number;
totalLoans: number;
totalLaagodi: number;
};

type DashboardSummaryResponse = {
villages: VillageSummary[];
mandals: MandalSummary[];
totals: {
villageCount: number;
memberCount: number;
Expand All @@ -26,7 +36,7 @@ type DashboardSummaryResponse = {

export default function DashboardPage() {
const { t } = useLanguage();
const [data, setData] = useState<VillageSummary[]>([]);
const [mandals, setMandals] = useState<MandalSummary[]>([]);
const [totals, setTotals] = useState<DashboardSummaryResponse["totals"] | null>(null);
const [loading, setLoading] = useState(true);
const [error, setError] = useState<string | null>(null);
Expand All @@ -49,7 +59,7 @@ export default function DashboardPage() {
throw new Error(json.error?.message || "Failed to load dashboard summary");
}

setData(json.data.villages);
setMandals(json.data.mandals);
setTotals(json.data.totals);
} catch (err) {
setError(err instanceof Error ? err.message : "Unknown error");
Expand All @@ -61,10 +71,26 @@ export default function DashboardPage() {
fetchSummary();
}, []);

const chartData = data.map((village) => ({
village: village.villageName,
deposits: village.totalDeposits,
loans: village.totalLoans,
// Prepare pie chart data per category
const depositsData: MandalPieItem[] = mandals.map((m) => ({
mandalId: m.mandalId,
mandalName: m.mandalName,
mandalNameTelugu: m.mandalNameTelugu,
value: m.totalDeposits,
}));

const loansData: MandalPieItem[] = mandals.map((m) => ({
mandalId: m.mandalId,
mandalName: m.mandalName,
mandalNameTelugu: m.mandalNameTelugu,
value: m.totalLoans,
}));

const laagodiData: MandalPieItem[] = mandals.map((m) => ({
mandalId: m.mandalId,
mandalName: m.mandalName,
mandalNameTelugu: m.mandalNameTelugu,
value: m.totalLaagodi,
}));

return (
Expand Down Expand Up @@ -108,21 +134,24 @@ export default function DashboardPage() {
</div>
)}

<div className="flex-1 space-y-8 p-8 pt-4">
<div className="rounded-lg border bg-card p-4 shadow-sm">
<div className="mb-4 flex items-center justify-between">
<div>
<h2 className="text-lg font-semibold">
{t.dashboard.chartTitle}
</h2>
<p className="text-sm text-muted-foreground">
{t.dashboard.chartSubtitle}
</p>
</div>
</div>
<VillageTransactionsChart data={chartData} />
</div>
</div>
{/* Pie Charts Grid */}
<div className="grid gap-4 md:grid-cols-2 lg:grid-cols-3 p-8 pt-4">
<MandalPieChart
title={t.dashboard.pieDeposits}
data={depositsData}
labelPrefix={t.dashboard.totalDepositsLabel}
/>
<MandalPieChart
title={t.dashboard.pieLoans}
data={loansData}
labelPrefix={t.dashboard.totalLoansLabel}
/>
<MandalPieChart
title={t.dashboard.pieLaagodi}
data={laagodiData}
labelPrefix={t.dashboard.totalLaagodiLabel}
/>
</div>
</div>
)}
</ContentLayout>
Expand Down
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