Add customer list filters and total count display

- Add search filters for customer name, email, and URL
- Add filter for customers with email
- Display total number of customers
- Update API to handle filter parameters

src/app/(admin)/admin/customers/page.tsx

@@ -39,6 +39,12 @@ export default function AdminCustomers() {
     const [page, setPage] = useState(initialPage);
     const [pageSize, setPageSize] = useState(initialPageSize);
 
+    // Search filters state
+    const [nameFilter, setNameFilter] = useState('');
+    const [emailFilter, setEmailFilter] = useState('');
+    const [urlFilter, setUrlFilter] = useState('');
+    const [hasEmailFilter, setHasEmailFilter] = useState(false);
+
     // State for data
     const [customers, setCustomers] = useState<Customer[]>([]);
     const [pagination, setPagination] = useState<PaginationInfo>({
@@ -57,11 +63,16 @@ export default function AdminCustomers() {
             setError(null);
 
             try {
-                // Build query string with pagination
+                // Build query string with pagination and filters
                 const params = new URLSearchParams();
                 params.append('page', initialPage.toString());
                 params.append('pageSize', initialPageSize.toString());
 
+                if (nameFilter) params.append('name', nameFilter);
+                if (emailFilter) params.append('email', emailFilter);
+                if (urlFilter) params.append('url', urlFilter);
+                if (hasEmailFilter) params.append('hasEmail', 'true');
+
                 const response = await fetch(`/api/customers?${params.toString()}`);
 
                 if (!response.ok) {
@@ -80,7 +91,7 @@ export default function AdminCustomers() {
         };
 
         fetchCustomers();
-    }, [initialPage, initialPageSize]);
+    }, [initialPage, initialPageSize, nameFilter, emailFilter, urlFilter, hasEmailFilter]);
 
     // Handle page change
     const handlePageChange = (newPage: number) => {
@@ -96,8 +107,15 @@ export default function AdminCustomers() {
 
     return (
         <div>
-            <div className="flex justify-between items-center">
+            <div className="flex justify-between items-center mb-4">
-                <h1 className="text-2xl font-semibold text-gray-900 dark:text-gray-100">Customers</h1>
+                <div>
+                    <h1 className="text-2xl font-semibold text-gray-900 dark:text-gray-100">Customers</h1>
+                    {!isLoading && (
+                        <p className="text-sm text-gray-500 dark:text-gray-400 mt-1">
+                            Total: {pagination.totalCount} customer{pagination.totalCount !== 1 ? 's' : ''}
+                        </p>
+                    )}
+                </div>
                 <Link
                     href="/admin/customers/new"
                     className="inline-flex items-center px-4 py-2 border border-transparent text-sm font-medium rounded-md shadow-sm text-white bg-indigo-600 hover:bg-indigo-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-indigo-500"
@@ -106,6 +124,66 @@ export default function AdminCustomers() {
                 </Link>
             </div>
 
+            {/* Search Filters */}
+            <div className="mb-6 grid grid-cols-1 gap-4 sm:grid-cols-2 lg:grid-cols-4">
+                <div>
+                    <label htmlFor="name-filter" className="block text-sm font-medium text-gray-700 dark:text-gray-300">
+                        Search by Name
+                    </label>
+                    <input
+                        type="text"
+                        id="name-filter"
+                        value={nameFilter}
+                        onChange={(e) => setNameFilter(e.target.value)}
+                        className="mt-1 block w-full rounded-md border-gray-300 shadow-sm focus:border-indigo-500 focus:ring-indigo-500 dark:bg-gray-700 dark:border-gray-600 dark:text-white sm:text-sm"
+                        placeholder="Enter name..."
+                    />
+                </div>
+                <div>
+                    <label htmlFor="email-filter" className="block text-sm font-medium text-gray-700 dark:text-gray-300">
+                        Search by Email
+                    </label>
+                    <input
+                        type="text"
+                        id="email-filter"
+                        value={emailFilter}
+                        onChange={(e) => setEmailFilter(e.target.value)}
+                        className="mt-1 block w-full rounded-md border-gray-300 shadow-sm focus:border-indigo-500 focus:ring-indigo-500 dark:bg-gray-700 dark:border-gray-600 dark:text-white sm:text-sm"
+                        placeholder="Enter email..."
+                    />
+                </div>
+                <div>
+                    <label htmlFor="url-filter" className="block text-sm font-medium text-gray-700 dark:text-gray-300">
+                        Search by URL
+                    </label>
+                    <input
+                        type="text"
+                        id="url-filter"
+                        value={urlFilter}
+                        onChange={(e) => setUrlFilter(e.target.value)}
+                        className="mt-1 block w-full rounded-md border-gray-300 shadow-sm focus:border-indigo-500 focus:ring-indigo-500 dark:bg-gray-700 dark:border-gray-600 dark:text-white sm:text-sm"
+                        placeholder="Enter URL..."
+                    />
+                </div>
+                <div>
+                    <label className="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-3">
+                        Email Filter
+                    </label>
+                    <div className="flex items-center">
+                        <input
+                            type="checkbox"
+                            id="has-email"
+                            checked={hasEmailFilter}
+                            onChange={(e) => setHasEmailFilter(e.target.checked)}
+                            className="h-4 w-4 rounded border-gray-300 text-indigo-600 focus:ring-indigo-500 dark:bg-gray-700 dark:border-gray-600"
+                        />
+                        <label htmlFor="has-email" className="ml-2 block text-sm text-gray-700 dark:text-gray-300">
+                            Has Email
+                        </label>
+                    </div>
+                </div>
+            </div>
+
             {/* Error Message */}
             {error && (
                 <div className="bg-red-50 border-l-4 border-red-400 p-4 my-4 dark:bg-red-900/20 dark:border-red-500">

src/app/api/customers/route.ts

@@ -15,9 +15,31 @@ export async function GET(request: NextRequest) {
         const pageSize = parseInt(url.searchParams.get('pageSize') || '10');
         const skip = (page - 1) * pageSize;
 
+        // Get filter parameters
+        const nameFilter = url.searchParams.get('name');
+        const emailFilter = url.searchParams.get('email');
+        const urlFilter = url.searchParams.get('url');
+        const hasEmailFilter = url.searchParams.get('hasEmail');
+
         // Build query
-        let queryBuilder = customerRepository.createQueryBuilder('customer')
+        let queryBuilder = customerRepository.createQueryBuilder('customer');
-            .orderBy('customer.createdAt', 'DESC');
+
+        // Apply filters
+        if (nameFilter) {
+            queryBuilder = queryBuilder.andWhere('LOWER(customer.name) LIKE LOWER(:name)', { name: `%${nameFilter}%` });
+        }
+        if (emailFilter) {
+            queryBuilder = queryBuilder.andWhere('LOWER(customer.email) LIKE LOWER(:email)', { email: `%${emailFilter}%` });
+        }
+        if (urlFilter) {
+            queryBuilder = queryBuilder.andWhere('LOWER(customer.url) LIKE LOWER(:url)', { url: `%${urlFilter}%` });
+        }
+        if (hasEmailFilter === 'true') {
+            queryBuilder = queryBuilder.andWhere('customer.email IS NOT NULL AND customer.email != :emptyString', { emptyString: '' });
+        }
+
+        // Add ordering
+        queryBuilder = queryBuilder.orderBy('customer.createdAt', 'DESC');
 
         // Get total count for pagination
         const totalCount = await queryBuilder.getCount();