feat: return 426 for premium filter searches on free plans + tag saved views

- EventController and StackController return 426 when all organizations in
  scope are on free plans and the filter references premium features (idx.*)
- SavedView.UsesPremiumFeatures is computed at save/update time via
  PersistentEventQueryValidator and exposed in ViewSavedView
- Frontend shows upgrade dialog on 426 search responses and badges saved
  views that require a paid plan in the sidebar

Author: niemyjski

src/Exceptionless.Core/Models/SavedView.cs

@@ -77,6 +77,9 @@ public record SavedView : IOwnedByOrganizationWithIdentity, IHaveDates
     /// <summary>Schema version for future filter definition migrations.</summary>
     public int Version { get; set; } = 1;
 
+    /// <summary>True when the filter references at least one custom field or other premium feature.</summary>
+    public bool UsesPremiumFeatures { get; set; }
+
     /// <summary>Dashboard page identifier: "events", "issues", or "stream".</summary>
     [Required]
     [RegularExpression("^(events|issues|stream)$")]

src/Exceptionless.Web/ClientApp/src/lib/generated/api.ts

@@ -582,6 +582,7 @@ export interface ViewSavedView {
   sort?: null | string;
   /** @format int32 */
   version: number;
+  uses_premium_features: boolean;
   view_type: string;
   /** @format date-time */
   created_utc: string;

src/Exceptionless.Web/ClientApp/src/lib/generated/schemas.ts

@@ -638,6 +638,7 @@ export const ViewSavedViewSchema = object({
   time: string().min(1, "Time is required").nullable().optional(),
   sort: string().min(1, "Sort is required").nullable().optional(),
   version: int32(),
+  uses_premium_features: boolean(),
   view_type: string().min(1, "View type is required"),
   created_utc: iso.datetime(),
   updated_utc: iso.datetime(),

src/Exceptionless.Web/ClientApp/src/routes/(app)/(components)/layouts/sidebar.svelte

@@ -11,6 +11,7 @@
     import ChevronRight from '@lucide/svelte/icons/chevron-right';
     import Settings from '@lucide/svelte/icons/settings-2';
     import Wrench from '@lucide/svelte/icons/wrench';
+    import Zap from '@lucide/svelte/icons/zap';
     import { onDestroy } from 'svelte';
 
     import type { NavigationItem } from '../../../routes.svelte';
@@ -254,10 +255,13 @@
                                         </DropdownMenu.Item>
                                         <DropdownMenu.Separator />
                                     {/if}
-                                    {#each route.children as savedItem (savedItem.href)}
+                                        {#each route.children as savedItem (savedItem.href)}
                                         <DropdownMenu.Item>
                                             <A variant="ghost" href={savedItem.href} class="w-full" onclick={onFlyoutLinkClick}>
                                                 {savedItem.title}
+                                                {#if savedItem.usesPremiumFeatures}
+                                                    <Zap class="text-muted-foreground ml-1 inline-block size-3" aria-label="Requires premium plan" title="This view uses premium features" />
+                                                {/if}
                                             </A>
                                         </DropdownMenu.Item>
                                     {/each}
@@ -308,6 +312,9 @@
                                                                 {...subProps}
                                                             >
                                                                 <span class="truncate">{savedItem.title}</span>
+                                                            {#if savedItem.usesPremiumFeatures}
+                                                                <Zap class="text-muted-foreground ml-auto size-3 shrink-0" aria-label="Requires premium plan" title="This view uses premium features" />
+                                                            {/if}
                                                             </A>
                                                         {/snippet}
                                                     </Sidebar.MenuSubButton>

src/Exceptionless.Web/ClientApp/src/routes/(app)/+layout.svelte

@@ -421,7 +421,8 @@
             const children = [
                 ...sortedViews.map((savedView) => ({
                     href: buildSavedViewHref(savedView),
-                    title: savedView.name
+                    title: savedView.name,
+                    usesPremiumFeatures: savedView.uses_premium_features
                 })),
                 ...(route.children ?? [])
             ];

src/Exceptionless.Web/ClientApp/src/routes/routes.svelte.ts

@@ -10,6 +10,7 @@ import { routes as authRoutes } from './(auth)/routes.svelte';
 export type NavigationChild = {
     href: string;
     title: string;
+    usesPremiumFeatures?: boolean;
 };
 
 export type NavigationItem = {

src/Exceptionless.Web/Controllers/EventController.cs

@@ -239,6 +239,11 @@ private async Task<ActionResult<CountResult>> CountInternalAsync(AppFilter sf, T
 
         sf.UsesPremiumFeatures = pr.UsesPremiumFeatures || far.UsesPremiumFeatures;
 
+        if (sf.UsesPremiumFeatures && sf.Organizations.Count > 0 && sf.Organizations.All(o => !o.HasPremiumFeatures))
+            return Problem(
+                detail: "Searching with custom fields requires a paid plan. Please upgrade to use this filter.",
+                statusCode: StatusCodes.Status426UpgradeRequired);
+
         if (mode == "stack_new")
             filter = AddFirstOccurrenceFilter(ti.Range, filter);
 
@@ -295,6 +300,11 @@ private async Task<ActionResult<ICollection<PersistentEvent>>> GetInternalAsync(
 
         sf.UsesPremiumFeatures = pr.UsesPremiumFeatures || usesPremiumFeatures;
 
+        if (sf.UsesPremiumFeatures && sf.Organizations.Count > 0 && sf.Organizations.All(o => !o.HasPremiumFeatures))
+            return Problem(
+                detail: "Searching with custom fields requires a paid plan. Please upgrade to use this filter.",
+                statusCode: StatusCodes.Status426UpgradeRequired);
+
         try
         {
             FindResults<PersistentEvent> events;

src/Exceptionless.Web/Controllers/SavedViewController.cs

@@ -20,14 +20,18 @@ namespace Exceptionless.App.Controllers.API;
 public class SavedViewController : RepositoryApiController<ISavedViewRepository, SavedView, ViewSavedView, NewSavedView, UpdateSavedView>
 {
     private const int MaxViewsPerOrganization = 100;
+    private readonly PersistentEventQueryValidator _eventQueryValidator;
 
     public SavedViewController(
         ISavedViewRepository repository,
         ApiMapper mapper,
         IAppQueryValidator validator,
+        PersistentEventQueryValidator eventQueryValidator,
         TimeProvider timeProvider,
         ILoggerFactory loggerFactory) : base(repository, mapper, validator, timeProvider, loggerFactory)
-    { }
+    {
+        _eventQueryValidator = eventQueryValidator;
+    }
 
     protected override SavedView MapToModel(NewSavedView newModel)
     {
@@ -309,15 +313,18 @@ protected override async Task<PermissionResult> CanUpdateAsync(SavedView origina
             .FirstOrDefault();
     }
 
-    protected override Task<SavedView> AddModelAsync(SavedView value)
+    protected override async Task<SavedView> AddModelAsync(SavedView value)
     {
         value.CreatedByUserId = CurrentUser.Id;
         value.Version = 1;
 
-        return base.AddModelAsync(value);
+        var pr = await _eventQueryValidator.ValidateQueryAsync(value.Filter);
+        value.UsesPremiumFeatures = pr.UsesPremiumFeatures;
+
+        return await base.AddModelAsync(value);
     }
 
-    protected override Task<SavedView> UpdateModelAsync(SavedView original, Delta<UpdateSavedView> changes)
+    protected override async Task<SavedView> UpdateModelAsync(SavedView original, Delta<UpdateSavedView> changes)
     {
         var changedNames = changes.GetChangedPropertyNames();
         changes.Patch(original);
@@ -330,7 +337,13 @@ protected override Task<SavedView> UpdateModelAsync(SavedView original, Delta<Up
 
         original.UpdatedByUserId = CurrentUser.Id;
 
-        return _repository.SaveAsync(original, o => o.Cache());
+        if (changedNames.Contains(nameof(UpdateSavedView.Filter)))
+        {
+            var pr = await _eventQueryValidator.ValidateQueryAsync(original.Filter);
+            original.UsesPremiumFeatures = pr.UsesPremiumFeatures;
+        }
+
+        return await _repository.SaveAsync(original, o => o.Cache());
     }
 
     protected override async Task<PermissionResult> CanDeleteAsync(SavedView value)

src/Exceptionless.Web/Controllers/StackController.cs

@@ -490,6 +490,11 @@ private async Task<ActionResult<IReadOnlyCollection<Stack>>> GetInternalAsync(Ap
 
         sf.UsesPremiumFeatures = pr.UsesPremiumFeatures;
 
+        if (sf.UsesPremiumFeatures && sf.Organizations.Count > 0 && sf.Organizations.All(o => !o.HasPremiumFeatures))
+            return Problem(
+                detail: "Searching with custom fields requires a paid plan. Please upgrade to use this filter.",
+                statusCode: StatusCodes.Status426UpgradeRequired);
+
         try
         {
             var results = await _repository.FindAsync(q => q.AppFilter(ShouldApplySystemFilter(sf, filter) ? sf : null).FilterExpression(filter).SortExpression(sort).DateRange(ti.Range.UtcStart, ti.Range.UtcEnd, ti.Field), o => o.PageNumber(page).PageLimit(limit));

src/Exceptionless.Web/Models/SavedView/ViewSavedView.cs

@@ -31,6 +31,7 @@ public record ViewSavedView : IIdentity, IHaveDates
     public string? Time { get; set; }
     public string? Sort { get; set; }
     public int Version { get; set; }
+    public bool UsesPremiumFeatures { get; set; }
     public string ViewType { get; set; } = null!;
 
     public DateTime CreatedUtc { get; set; }