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* PartnerAttendanceDashboard
* Story 8.1: AC1, AC2, AC3, AC7, AC8
*
* Two charts replacing the raw attendance table:
*
* Chart 1 — Attendance per event (ComposedChart):
* Bars = this company's attendees per event | Line = total event attendees
* Shows: "are we growing in step with BATbern?"
*
* Chart 2 — Year-over-year trend (ComposedChart):
* Bars = company headcount per year | Line (right axis) = attendance share %
* Shows: "are we becoming a larger or smaller slice over time?"
*
* Both charts computed from the existing /analytics/dashboard API payload.
* No new backend endpoints required.
*/
import React, { useMemo, useState } from 'react';
import { useQuery } from '@tanstack/react-query';
import {
Bar,
CartesianGrid,
ComposedChart,
Line,
ResponsiveContainer,
Tooltip,
XAxis,
YAxis,
} from 'recharts';
import {
Alert,
Box,
Button,
ButtonGroup,
Card,
CardContent,
Container,
Paper,
Skeleton,
Typography,
} from '@mui/material';
import { useTranslation } from 'react-i18next';
import { getAttendanceDashboard } from '@/services/api/partnerAnalyticsApi';
import { AttendanceExportButton } from './AttendanceExportButton';
import { CHART_COLORS } from '@/components/organizer/Analytics/CHART_COLORS';
interface Props {
companyName: string;
}
const CURRENT_YEAR = new Date().getFullYear();
const FROM_YEAR_5 = CURRENT_YEAR - 5;
// Reusable chart card wrapper
const ChartSection: React.FC<{ title: string; children: React.ReactNode; testId?: string }> = ({
title,
children,
testId,
}) => (
<Paper variant="outlined" sx={{ p: 3, mb: 3 }} data-testid={testId}>
<Typography variant="subtitle1" fontWeight={600} mb={2}>
{title}
</Typography>
{children}
</Paper>
);
export const PartnerAttendanceDashboard: React.FC<Props> = ({ companyName }) => {
const { t } = useTranslation('partners');
const [fromYear, setFromYear] = useState<number>(FROM_YEAR_5);
const { data, isLoading, isError } = useQuery({
queryKey: ['partnerAttendanceDashboard', companyName, fromYear],
queryFn: () => getAttendanceDashboard(companyName, fromYear),
staleTime: 15 * 60 * 1000,
});
// ─── Loading state ─────────────────────────────────────────────────────────
if (isLoading) {
return (
<Container maxWidth="xl" sx={{ py: 4 }} data-testid="analytics-loading">
<Skeleton variant="text" width={300} height={40} sx={{ mb: 2 }} />
<Box sx={{ display: 'flex', gap: 2, mb: 3 }}>
<Skeleton variant="rectangular" width={200} height={100} />
<Skeleton variant="rectangular" width={200} height={100} />
</Box>
<Skeleton variant="rectangular" height={300} sx={{ mb: 3 }} />
<Skeleton variant="rectangular" height={250} />
</Container>
);
}
// ─── Error state ───────────────────────────────────────────────────────────
if (isError) {
return (
<Container maxWidth="xl" sx={{ py: 4 }}>
<Alert severity="error" data-testid="analytics-error">
{t('portal.analytics.error')}
</Alert>
</Container>
);
}
// ─── Data preparation ──────────────────────────────────────────────────────
const summaries = data?.attendanceSummary ?? [];
const totalCompanyAttendees = summaries.reduce((sum, s) => sum + s.companyAttendees, 0);
const totalAttendees = summaries.reduce((sum, s) => sum + s.totalAttendees, 0);
const avgAttendanceRate = totalAttendees > 0 ? totalCompanyAttendees / totalAttendees : 0;
return (
<Container maxWidth="xl" sx={{ py: 4 }} data-testid="attendance-dashboard">
{/* KPI cards */}
<Box sx={{ display: 'flex', gap: 2, mb: 3 }}>
<Card sx={{ minWidth: 200 }} data-testid="kpi-attendance-rate">
<CardContent>
<Typography variant="subtitle2" color="text.secondary">
{t('portal.analytics.kpi.attendanceRate')}
</Typography>
<Typography variant="h4">{(avgAttendanceRate * 100).toFixed(1)}%</Typography>
</CardContent>
</Card>
<Card sx={{ minWidth: 200 }} data-testid="kpi-cost-per-attendee">
<CardContent>
<Typography variant="subtitle2" color="text.secondary">
{t('portal.analytics.kpi.costPerAttendee')}
</Typography>
<Typography variant="h4">
{data?.costPerAttendee != null
? `${t('portal.analytics.kpi.currency')} ${data.costPerAttendee.toFixed(2)}`
: 'N/A'}
</Typography>
</CardContent>
</Card>
</Box>
{/* Range toggle + export */}
<Box sx={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', mb: 3 }}>
<ButtonGroup variant="outlined" size="small" data-testid="range-toggle">
<Button
variant={fromYear === FROM_YEAR_5 ? 'contained' : 'outlined'}
onClick={() => setFromYear(FROM_YEAR_5)}
data-testid="range-5years"
>
{t('portal.analytics.range.last5years')}
</Button>
<Button
variant={fromYear === CURRENT_YEAR - 20 ? 'contained' : 'outlined'}
onClick={() => setFromYear(CURRENT_YEAR - 20)}
data-testid="range-allhistory"
>
{t('portal.analytics.range.allHistory')}
</Button>
</ButtonGroup>
<AttendanceExportButton companyName={companyName} fromYear={fromYear} />
</Box>
{summaries.length === 0 ? (
<Typography color="text.secondary" data-testid="no-data-message">
{t('portal.analytics.noData')}
</Typography>
) : (
<>
<Chart1PerEvent summaries={summaries} />
<Chart2YearOverYear summaries={summaries} />
</>
)}
</Container>
);
};
// ─── Chart 1: Attendance per event ────────────────────────────────────────────
interface SummaryRow {
eventCode: string;
eventTitle: string;
eventDate: string;
companyAttendees: number;
totalAttendees: number;
}
const Chart1PerEvent: React.FC<{ summaries: SummaryRow[] }> = ({ summaries }) => {
const { t } = useTranslation('partners');
const rows = useMemo(
() =>
[...summaries]
.sort((a, b) => new Date(a.eventDate).getTime() - new Date(b.eventDate).getTime())
.map((s) => ({
eventCode: s.eventCode,
title: s.eventTitle || s.eventCode,
company: s.companyAttendees,
total: s.totalAttendees,
})),
[summaries]
);
return (
<ChartSection
title={t('portal.analytics.charts.companyVsTotal')}
testId="chart-attendance-per-event"
>
<ResponsiveContainer width="100%" height={320}>
<ComposedChart data={rows} margin={{ top: 4, right: 40, left: 0, bottom: 56 }}>
<CartesianGrid strokeDasharray="3 3" />
<XAxis
dataKey="title"
angle={-45}
textAnchor="end"
interval={0}
tick={{ fontSize: 10 }}
/>
<YAxis allowDecimals={false} />
<Tooltip
content={({ active, payload }) => {
if (!active || !payload?.length) return null;
// eslint-disable-next-line @typescript-eslint/no-explicit-any
const row = payload[0].payload as any;
return (
<div
style={{
background: '#fff',
border: '1px solid #ccc',
borderRadius: 4,
padding: '8px 12px',
fontSize: 12,
}}
>
<div style={{ fontWeight: 600 }}>{row.eventCode}</div>
<div style={{ marginBottom: 4, color: '#555' }}>{row.title}</div>
{payload.map((p) => (
<div key={p.dataKey as string}>
{p.dataKey === 'company' ? 'Your attendees' : 'Total attendees'}: {p.value}
</div>
))}
</div>
);
}}
/>
<Bar dataKey="company" name="company" fill={CHART_COLORS.partner} />
<Line
type="monotone"
dataKey="total"
name="total"
stroke={CHART_COLORS.primary}
dot={false}
strokeWidth={2}
strokeDasharray="5 3"
/>
</ComposedChart>
</ResponsiveContainer>
</ChartSection>
);
};
// ─── Chart 2: Year-over-year trend ────────────────────────────────────────────
const Chart2YearOverYear: React.FC<{ summaries: SummaryRow[] }> = ({ summaries }) => {
const { t } = useTranslation('partners');
const rows = useMemo(() => {
const byYear: Record<string, { company: number; total: number }> = {};
for (const s of summaries) {
const year = new Date(s.eventDate).getFullYear().toString();
Eif (!byYear[year]) byYear[year] = { company: 0, total: 0 };
byYear[year].company += s.companyAttendees;
byYear[year].total += s.totalAttendees;
}
return Object.entries(byYear)
.sort(([a], [b]) => Number(a) - Number(b))
.map(([year, { company, total }]) => ({
year,
company,
total,
sharePct: total > 0 ? Math.round((company / total) * 100) : 0,
}));
}, [summaries]);
return (
<ChartSection title={t('portal.analytics.charts.yoyHeadcount')} testId="chart-yoy-headcount">
<ResponsiveContainer width="100%" height={280}>
<ComposedChart data={rows} margin={{ top: 4, right: 48, left: 0, bottom: 4 }}>
<CartesianGrid strokeDasharray="3 3" />
<XAxis dataKey="year" />
<YAxis yAxisId="count" allowDecimals={false} />
<YAxis
yAxisId="pct"
orientation="right"
tickFormatter={(v) => `${v}%`}
domain={[0, 100]}
/>
<Tooltip
formatter={(value, name) => {
if (name === 'sharePct') return [`${value}%`, 'Share of total'];
if (name === 'company') return [value, 'Your attendees'];
return [value, name];
}}
/>
<Bar yAxisId="count" dataKey="company" name="company" fill={CHART_COLORS.partner} />
<Line
yAxisId="pct"
type="monotone"
dataKey="sharePct"
name="sharePct"
stroke={CHART_COLORS.primary}
dot={{ r: 4 }}
strokeWidth={2}
/>
</ComposedChart>
</ResponsiveContainer>
</ChartSection>
);
};
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