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1 "use client";2  3+import { useMemo, useState } from "react";4+import { Button, Card, Checkbox, TextInput } from "opus-react";3−import { Button, Card, TextInput } from "opus-react";4  5 type Customer = {6   id: string;7   name: string;8   company: string;9   status: "lead" | "active" | "paused";10 };11  12 type CustomerListProps = {13   customers: Customer[];14   onArchive: (customerId: string) => Promise<void>;15 };16  17 export function CustomerList({ customers, onArchive }: CustomerListProps) {18   const [query, setQuery] = useState("");19   const [selectedIds, setSelectedIds] = useState<string[]>([]);21+  const [isArchiving, setIsArchiving] = useState(false);22+  const [error, setError] = useState<string | null>(null);20  24+  const visibleCustomers = useMemo(() => {25+    const search = query.trim().toLowerCase();26+ 27+    if (!search) {28+      return customers;29+    }30+ 31+    return customers.filter((customer) =>32+      [customer.name, customer.company, customer.status]33+        .join(" ")34+        .toLowerCase()35+        .includes(search),36+    );37+  }, [customers, query]);21−  const visibleCustomers = customers.filter((customer) => {22−    return customer.name.toLowerCase().includes(query.toLowerCase());23−  });24  25   function toggleCustomer(customerId: string) {40+    setSelectedIds((current) =>41+      current.includes(customerId)42+        ? current.filter((id) => id !== customerId)43+        : [...current, customerId],44+    );26−    selectedIds.push(customerId);27−    setSelectedIds(selectedIds);28   }29  30   async function archiveSelected() {48+    setError(null);49+    setIsArchiving(true);31−    selectedIds.forEach(async (customerId) => {32−      await onArchive(customerId);33−    });34  51+    try {52+      await Promise.all(53+        selectedIds.map((customerId) => onArchive(customerId)),54+      );55+      setSelectedIds([]);56+    } catch {57+      setError("Some customers could not be archived. Please try again.");58+    } finally {59+      setIsArchiving(false);60+    }35−    setSelectedIds([]);36   }37  38   return (64+    <section aria-labelledby="customer-list-title">39−    <section>40       <header>66+        <h2 id="customer-list-title">Customers</h2>67+        <Button68+          disabled={selectedIds.length === 0 || isArchiving}69+          onClick={archiveSelected}70+        >71+          {isArchiving ? "Archiving…" : "Archive selected"}41−        <h2>Customers</h2>42−        <Button onclick={archiveSelected}>43−          Archive selected44         </Button>45       </header>46  47       <TextInput76+        id="customer-search"77+        label="Search customers"48         placeholder="Name, company or status"49         value={query}50         onChange={(event) => setQuery(event.target.value)}51       />52  83+      {error ? <p role="alert">{error}</p> : null}84+ 85+      <p role="status">86+        Showing {visibleCustomers.length} of {customers.length} customers87+      </p>88+ 89+      <div aria-busy={isArchiving}>53−      <div>54         {visibleCustomers.map((customer) => (91+          <Card key={customer.id}>92+            <Checkbox93+              aria-label={`Select ${customer.name}`}55−          <Card>56−            <input57−              type="checkbox"58               checked={selectedIds.includes(customer.id)}59               onChange={() => toggleCustomer(customer.id)}60             />61             <strong>{customer.name}</strong>62             <span>{customer.company}</span>63             <small>{customer.status}</small>64           </Card>65         ))}66       </div>67     </section>68   );69 }