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* @file RecentStockActivityCard.tsx
* @module pages/analytics/blocks/RecentStockActivityCard
*
* @summary
* Stacked bar view of recent stock updates grouped by day and reason. Replaces the
* verbose table for a faster visual scan while reusing the same backing API.
*/
import * as React from 'react';
import { Card, CardContent, Typography, Skeleton, Box } from '@mui/material';
import { useTheme as useMuiTheme } from '@mui/material/styles';
import { useQuery } from '@tanstack/react-query';
import { useTranslation } from 'react-i18next';
import { ResponsiveContainer, BarChart, CartesianGrid, XAxis, YAxis, Tooltip, Legend, Bar } from 'recharts';
import { getStockUpdates, type StockUpdateRow } from '../../../api/analytics/updates';
import { useSettings } from '../../../hooks/useSettings';
import { formatDate, formatNumber } from '../../../utils/formatters';
export type RecentStockActivityCardProps = { from?: string; to?: string; supplierId?: string | null };
type ReasonLabelKey = 'initialStock' | 'adjustment' | 'sale' | 'writeOff' | 'return' | 'other';
const SERIES_ORDER: ReasonLabelKey[] = ['initialStock', 'adjustment', 'sale', 'writeOff', 'return', 'other'];
const DEFAULT_REASON_LABEL: Record<ReasonLabelKey, string> = {
initialStock: 'Purchases',
adjustment: 'Adjustments',
sale: 'Sales',
writeOff: 'Write-offs',
return: 'Returns',
other: 'Other',
};
function normalizeReason(reason?: string): ReasonLabelKey {
if (!reason) return 'other';
const upper = reason.toUpperCase();
if (upper.startsWith('INITIAL')) return 'initialStock';
if (upper.includes('ADJUST') || upper.includes('MANUAL')) return 'adjustment';
if (upper.includes('SALE') || upper.includes('SOLD')) return 'sale';
if (
upper.includes('WRITE') ||
upper.includes('SCRAP') ||
upper.includes('EXPIRE') ||
upper.includes('DAMAG') ||
upper.includes('DESTROY')
) {
return 'writeOff';
}
if (upper.includes('RETURN')) return 'return';
return 'other';
}
export default function RecentStockActivityCard({ from, to, supplierId }: RecentStockActivityCardProps) {
const { t } = useTranslation(['analytics']);
const muiTheme = useMuiTheme();
const { userPreferences } = useSettings();
const q = useQuery<StockUpdateRow[]>({
queryKey: ['analytics', 'stockUpdates', from, to, supplierId ?? null],
queryFn: () => getStockUpdates({ from, to, supplierId: supplierId ?? undefined, limit: 200 }),
});
const { rows, reasonKeys } = React.useMemo(() => {
if (!q.data) return { rows: [] as Array<Record<string, number | string>>, reasonKeys: [] as ReasonLabelKey[] };
const buckets = new Map<string, { dateObj: Date; totals: Partial<Record<ReasonLabelKey, number>> }>();
const presentReasons = new Set<ReasonLabelKey>();
for (const update of q.data) {
if (!update.timestamp) continue;
const timestamp = new Date(update.timestamp);
if (Number.isNaN(timestamp.getTime())) continue;
const dayKey = timestamp.toISOString().slice(0, 10); // group by UTC day
const reasonKey = normalizeReason(update.reason);
presentReasons.add(reasonKey);
const bucket = buckets.get(dayKey) ?? { dateObj: timestamp, totals: {} };
const delta = typeof update.delta === 'number' ? Math.abs(update.delta) : 0;
bucket.totals[reasonKey] = (bucket.totals[reasonKey] ?? 0) + delta;
buckets.set(dayKey, bucket);
}
const orderedReasonKeys = SERIES_ORDER.filter((key) => presentReasons.has(key));
const rows = Array.from(buckets.entries())
.sort((a, b) => a[0].localeCompare(b[0]))
.map(([, bucket]) => {
const base: Record<string, number | string> = {
dateKey: bucket.dateObj.toISOString(),
dateLabel: formatDate(bucket.dateObj, userPreferences.dateFormat),
};
orderedReasonKeys.forEach((key) => {
base[key] = bucket.totals[key] ?? 0;
});
return base;
});
return { rows, reasonKeys: orderedReasonKeys };
}, [q.data, userPreferences.dateFormat]);
const reasonColors = React.useMemo(() => {
const palette = [
muiTheme.palette.success.main,
muiTheme.palette.info.main,
muiTheme.palette.error.main,
muiTheme.palette.warning.main,
muiTheme.palette.primary.main,
muiTheme.palette.grey[500],
];
return reasonKeys.reduce((acc, key, idx) => {
acc[key] = palette[idx % palette.length];
return acc;
}, {} as Record<ReasonLabelKey, string>);
}, [reasonKeys, muiTheme]);
const formatReasonLabel = React.useCallback(
(key: ReasonLabelKey) => t(`analytics:updates.labels.${key}`, DEFAULT_REASON_LABEL[key]),
[t]
);
return (
<Card>
<CardContent>
<Typography variant="subtitle1" sx={{ mb: 1 }}>
{t('analytics:updates.title', 'Recent stock updates')}
</Typography>
{q.isLoading ? (
<Skeleton variant="rounded" height={260} />
) : rows.length === 0 ? (
<Box sx={{ color: 'text.secondary' }}>{t('analytics:updates.empty', 'No updates in this period.')}</Box>
) : (
<Box sx={{ height: 320 }}>
<ResponsiveContainer width="100%" height="100%">
<BarChart data={rows} margin={{ top: 8, right: 16, left: 8, bottom: 8 }}>
<CartesianGrid strokeDasharray="3 3" />
<XAxis dataKey="dateLabel" />
<YAxis tickFormatter={(value) => formatNumber(Number(value), userPreferences.numberFormat, 0)} />
<Tooltip
formatter={(value) => formatNumber(Number(value), userPreferences.numberFormat, 0)}
labelFormatter={(label) => label as string}
/>
<Legend />
{reasonKeys.map((key) => (
<Bar
key={key}
dataKey={key}
stackId="activity"
name={formatReasonLabel(key)}
fill={reasonColors[key]}
isAnimationActive={false}
/>
))}
</BarChart>
</ResponsiveContainer>
</Box>
)}
</CardContent>
</Card>
);
}
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