Added filter to /list, potential change: live filter without seperate submit when onclick and oninput would work

Guestlist/Components/Pages/GuestList.razor

@@ -7,15 +7,31 @@
         <p class="text-secondary mb-0">Read-only access for guests.</p>
     </div>
 
+    <div class="d-flex flex-column flex-sm-row gap-3 w-100 w-md-auto">
+        <form method="get" action="/list" class="w-100 w-md-auto">
+            <label class="form-label" for="guest-list-search">Search</label>
+            <div class="d-flex gap-2">
+                <input id="guest-list-search" class="form-control" name="search" value="@SearchTerm" placeholder="Name, note or user" />
+                <button type="submit" class="btn btn-outline-primary">
+                    Search
+                </button>
+                @if (!string.IsNullOrWhiteSpace(SearchTerm))
+                {
+                    <a class="btn btn-outline-secondary" href="/list">Clear</a>
+                }
+            </div>
+        </form>
+
         @if (ShowLeaveGuestList)
         {
-        <form method="post" action="/guest/logout">
+            <form method="post" action="/guest/logout" class="align-self-sm-end">
                 <button type="submit" class="btn btn-outline-secondary">
                     Leave guest list
                 </button>
             </form>
         }
     </div>
+</div>
 
 @if (GuestEntries is null)
 {
@@ -33,10 +49,18 @@ else if (GuestEntries.Count == 0)
         </div>
     </div>
 }
+else if (!FilteredGuestEntries.Any())
+{
+    <div class="card shadow-sm">
+        <div class="card-body">
+            <p class="text-secondary mb-0">No guests match the current filter.</p>
+        </div>
+    </div>
+}
 else
 {
     <div class="guest-card-grid">
-        @foreach (var guest in GuestEntries)
+        @foreach (var guest in FilteredGuestEntries)
         {
             <article class="card shadow-sm">
                 <div class="card-body">

Guestlist/Components/Pages/GuestList.razor.cs

@@ -20,9 +20,38 @@ public partial class GuestList : ComponentBase
 
     protected List<GuestEntryDocument>? GuestEntries { get; set; }
     protected bool ShowLeaveGuestList { get; set; }
+    protected string SearchTerm { get; set; } = "";
+
+    [SupplyParameterFromQuery(Name = "search")]
+    public string? IncomingSearchTerm { get; set; }
+
+    protected IEnumerable<GuestEntryDocument> FilteredGuestEntries
+    {
+        get
+        {
+            if (GuestEntries is null)
+            {
+                return [];
+            }
+
+            if (string.IsNullOrWhiteSpace(SearchTerm))
+            {
+                return GuestEntries;
+            }
+
+            var searchTerm = SearchTerm.Trim();
+
+            return GuestEntries.Where(guest =>
+                guest.Name.Contains(searchTerm, StringComparison.OrdinalIgnoreCase) ||
+                (guest.Notes?.Contains(searchTerm, StringComparison.OrdinalIgnoreCase) == true) ||
+                guest.AddedByUsername.Contains(searchTerm, StringComparison.OrdinalIgnoreCase));
+        }
+    }
 
     protected override async Task OnInitializedAsync()
     {
+        SearchTerm = IncomingSearchTerm ?? "";
+
         var authState = await AuthenticationStateProvider.GetAuthenticationStateAsync();
         var user = authState.User;
         var isStaffUser =