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import {useQuery} from "@tanstack/react-query";
import {AlertTriangle, CheckCircle2, ShieldCheck, TrendingUp} from "lucide-react";
import {DashboardShell} from "../dashboard-shell/dashboard-shell";
import {Badge} from "@/components/ui/badge/badge";
import {Button} from "@/components/ui/button/button";
import {MeterBar, type MeterTone} from "@/components/ui/meter-bar/meter-bar";
import {Skeleton} from "@/components/ui/skeleton/skeleton";
import {uiStyles} from "@/components/ui/style-primitives";
import {fetchCustomers} from "@/lib/api/api";
import {cn, formatCurrency, formatDate, formatNumber, formatPercent} from "@/lib/utils/utils";
import type {Customer, CustomerStatus} from "@/types/dashboard";
const statusCopy: Record<CustomerStatus, string> = {
active: "Active",
churned: "Churned",
past_due: "Past due",
trial: "Trial",
};
const statusTone: Record<CustomerStatus, "amber" | "emerald" | "rose" | "slate"> = {
active: "emerald",
churned: "slate",
past_due: "rose",
trial: "amber",
};
const healthCustomerFilters = {
page: 1,
pageSize: 100,
plan: "all" as const,
query: "",
status: "all" as const,
};
function healthTone(value: number): MeterTone {
Iif (value >= 80) return "emerald";
if (value >= 60) return "amber";
return "rose";
}
function HealthSummary({
customers,
isLoading,
}: {
customers: Customer[];
isLoading: boolean;
}) {
if (isLoading) {
return (
<section aria-label="Health summary" className="grid gap-3 md:grid-cols-2 xl:grid-cols-4">
{Array.from({length: 4}).map((_, index) => (
<Skeleton className="h-28" key={index}/>
))}
</section>
);
}
const averageHealth = customers.length
? Math.round(customers.reduce((total, customer) => total + customer.healthScore, 0) / customers.length)
: 0;
const lowUsage = customers.filter((customer) => customer.usage < 60).length;
const pastDue = customers.filter((customer) => customer.status === "past_due").length;
const healthy = customers.filter((customer) => customer.healthScore >= 80).length;
const cards = [
{
caption: "Average customer health",
icon: ShieldCheck,
label: "Health score",
value: `${formatNumber(averageHealth)}/100`,
},
{
caption: "Customers below usage target",
icon: TrendingUp,
label: "Low usage",
value: formatNumber(lowUsage),
},
{
caption: "Billing or commercial risk",
icon: AlertTriangle,
label: "Past due",
value: formatNumber(pastDue),
},
{
caption: "Healthy accounts above 80",
icon: CheckCircle2,
label: "Healthy",
value: formatNumber(healthy),
},
];
return (
<section aria-label="Health summary" className="grid gap-3 md:grid-cols-2 xl:grid-cols-4">
{cards.map((card) => (
<article className={cn("p-4", uiStyles.surface)} key={card.label}>
<p className="flex items-center gap-2 text-sm text-slate-500 dark:text-slate-400">
<card.icon aria-hidden="true" size={16}/>
{card.label}
</p>
<p className="mt-3 text-2xl font-semibold text-slate-950 dark:text-white">{card.value}</p>
<p className="mt-2 text-sm text-slate-500 dark:text-slate-400">{card.caption}</p>
</article>
))}
</section>
);
}
function HealthDistribution({customers}: { customers: Customer[] }) {
const total = Math.max(customers.length, 1);
const ranges = [
{
count: customers.filter((customer) => customer.healthScore >= 80).length,
label: "Healthy",
tone: "emerald" as const,
},
{
count: customers.filter((customer) => customer.healthScore >= 60 && customer.healthScore < 80).length,
label: "Watch",
tone: "amber" as const,
},
{
count: customers.filter((customer) => customer.healthScore < 60).length,
label: "Risk",
tone: "rose" as const,
},
];
return (
<section aria-labelledby="health-distribution-title" className={cn("p-5", uiStyles.surface)}>
<h2 className={uiStyles.sectionHeading} id="health-distribution-title">Health distribution</h2>
<div className="mt-5 space-y-4">
{ranges.map((range) => {
const percent = Math.round((range.count / total) * 100);
return (
<div className="space-y-2" key={range.label}>
<div className="flex items-center justify-between gap-3">
<p className="text-sm font-medium text-slate-700 dark:text-slate-200">{range.label}</p>
<p className="text-sm text-slate-500 dark:text-slate-400">
{formatNumber(range.count)} accounts - {formatPercent(percent / 100)}
</p>
</div>
<MeterBar
label={`${range.label} account distribution`}
tone={range.tone}
value={percent}
valueText={`${percent}%`}
/>
</div>
);
})}
</div>
</section>
);
}
function RiskQueue({customers}: { customers: Customer[] }) {
const riskCustomers = [...customers]
.sort((left, right) => left.healthScore - right.healthScore)
.slice(0, 6);
return (
<section aria-labelledby="health-risk-title" className={cn("p-5", uiStyles.surface)}>
<h2 className={uiStyles.sectionHeading} id="health-risk-title">Risk queue</h2>
<ul className="mt-4 grid gap-3 lg:grid-cols-2">
{riskCustomers.map((customer) => (
<li className={cn("p-4", uiStyles.insetSurface)} key={customer.id}>
<article aria-labelledby={`${customer.id}-health-title`}>
<div className="flex flex-wrap items-center justify-between gap-2">
<h3 className="text-sm font-semibold text-slate-950 dark:text-white"
id={`${customer.id}-health-title`}>
{customer.company}
</h3>
<Badge tone={statusTone[customer.status]}>{statusCopy[customer.status]}</Badge>
</div>
<p className="mt-1 text-sm text-slate-500 dark:text-slate-400">
{customer.owner} - {customer.region}
</p>
<div className="mt-4 space-y-2">
<div className="flex items-center justify-between gap-3 text-sm">
<span className="text-slate-500 dark:text-slate-400">Health</span>
<span
className="font-medium text-slate-950 dark:text-white">{customer.healthScore}/100</span>
</div>
<MeterBar
label={`${customer.company} health score`}
tone={healthTone(customer.healthScore)}
value={customer.healthScore}
valueText={`${customer.healthScore} out of 100`}
/>
</div>
<dl className="mt-4 grid grid-cols-2 gap-2 text-xs">
<div>
<dt className="text-slate-500 dark:text-slate-400">MRR</dt>
<dd className="mt-1 font-medium text-slate-900 dark:text-white">
{formatCurrency(customer.mrr, true)}
</dd>
</div>
<div>
<dt className="text-slate-500 dark:text-slate-400">Usage</dt>
<dd className="mt-1 font-medium text-slate-900 dark:text-white">
{formatPercent(customer.usage / 100)}
</dd>
</div>
<div className="col-span-2">
<dt className="text-slate-500 dark:text-slate-400">Last seen</dt>
<dd className="mt-1 font-medium text-slate-900 dark:text-white">
{formatDate(customer.lastSeen)}
</dd>
</div>
</dl>
</article>
</li>
))}
</ul>
</section>
);
}
/** Focused health route for customer risk, usage quality, and account follow-up. */
export function HealthPageClient() {
const customersQuery = useQuery({
queryFn: () => fetchCustomers(healthCustomerFilters),
queryKey: ["customers", healthCustomerFilters],
});
const customers = customersQuery.data?.data ?? [];
return (
<DashboardShell
activeSection="health"
description="Prioritize customer follow-up by health score, usage pressure, billing risk, and account activity."
eyebrow="Health"
isRefreshing={customersQuery.isFetching}
onRefresh={() => void customersQuery.refetch()}
title="Health"
>
<HealthSummary customers={customers} isLoading={customersQuery.isLoading}/>
{customersQuery.isLoading ? (
<div className="grid gap-4 xl:grid-cols-[minmax(0,0.8fr)_minmax(0,1.2fr)]">
<Skeleton className="h-88"/>
<Skeleton className="h-130"/>
</div>
) : customersQuery.isError ? (
<section className={cn("p-5", uiStyles.dangerSurface)} role="alert">
<h2 className={uiStyles.sectionHeading}>Customer health failed to load</h2>
<p className={cn("mt-2", uiStyles.bodyText)}>
Health scoring is unavailable, but the rest of the workspace remains usable.
</p>
<Button className="mt-4" onClick={() => void customersQuery.refetch()} variant="danger">
Retry
</Button>
</section>
) : (
<div className="grid gap-4 xl:grid-cols-[minmax(0,0.8fr)_minmax(0,1.2fr)]">
<HealthDistribution customers={customers}/>
<RiskQueue customers={customers}/>
</div>
)}
</DashboardShell>
);
}
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