feat: Implement automatic API connectivity banner

src/App.tsx

@@ -5,11 +5,10 @@ import { TooltipProvider } from "@/components/ui/tooltip";
 import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
 import { ReactQueryDevtools } from "@tanstack/react-query-devtools";
 import { BrowserRouter, Routes, Route, useLocation } from "react-router-dom";
-import * as Cronitor from '@cronitorio/cronitor-rum';
 import { AuthProvider } from "@/hooks/useAuth";
 import { AuthModalProvider } from "@/contexts/AuthModalContext";
 import { MFAStepUpProvider } from "@/contexts/MFAStepUpContext";
-import { CronitorHealthProvider, useCronitorHealth } from "@/contexts/CronitorHealthContext";
+import { APIConnectivityProvider, useAPIConnectivity } from "@/contexts/APIConnectivityContext";
 import { LocationAutoDetectProvider } from "@/components/providers/LocationAutoDetectProvider";
 import { AnalyticsWrapper } from "@/components/analytics/AnalyticsWrapper";
 import { Footer } from "@/components/layout/Footer";
@@ -135,8 +134,8 @@ function NavigationTracker() {
 
 function AppContent(): React.JSX.Element {
   // Check if API status banner is visible to add padding
-  const { passing, isBannerDismissed } = useCronitorHealth();
-  const showBanner = passing === false && !isBannerDismissed;
+  const { isAPIReachable, isBannerDismissed } = useAPIConnectivity();
+  const showBanner = !isAPIReachable && !isBannerDismissed;
 
   return (
     <TooltipProvider>
@@ -399,31 +398,16 @@ function AppContent(): React.JSX.Element {
 }
 
 const App = (): React.JSX.Element => {
-  // Initialize Cronitor RUM before router mounts
-  useEffect(() => {
-    try {
-      Cronitor.load("0b5d17d3f7625ce8766c2c4c85c1895d", {
-        debug: import.meta.env.DEV, // Enable debug logs in development only
-        trackMode: 'history', // Automatically track page views with React Router
-      });
-      
-      // Log successful initialization
-      console.log('[Cronitor] RUM initialized');
-    } catch (error) {
-      console.error('[Cronitor] Failed to initialize:', error);
-    }
-  }, []);
-
   return (
     <QueryClientProvider client={queryClient}>
       <AuthProvider>
         <AuthModalProvider>
           <MFAStepUpProvider>
-            <CronitorHealthProvider>
+            <APIConnectivityProvider>
               <BrowserRouter>
                 <AppContent />
               </BrowserRouter>
-            </CronitorHealthProvider>
+            </APIConnectivityProvider>
           </MFAStepUpProvider>
         </AuthModalProvider>
       </AuthProvider>

src/components/ui/api-status-banner.tsx

@@ -1,20 +1,16 @@
 import { AlertTriangle, X, ExternalLink } from 'lucide-react';
 import { Button } from '@/components/ui/button';
-import { useCronitorHealth } from '@/contexts/CronitorHealthContext';
+import { useAPIConnectivity } from '@/contexts/APIConnectivityContext';
 
 /**
- * Banner displayed when Cronitor detects Supabase API is down
+ * Banner displayed when Supabase API is unreachable
  * Includes link to status page and dismissal option
  */
 export function APIStatusBanner() {
-  const { passing, isLoading, isBannerDismissed, dismissBanner } = useCronitorHealth();
+  const { isAPIReachable, isBannerDismissed, dismissBanner } = useAPIConnectivity();
   
-  // Don't show if:
-  // - Still loading initial data
-  // - API is healthy (passing === true)
-  // - User dismissed it
-  // - Status unknown (passing === null) after initial load
-  if (isLoading || passing === true || passing === null || isBannerDismissed) {
+  // Show banner when API is down AND not dismissed
+  if (isAPIReachable || isBannerDismissed) {
     return null;
   }
 
@@ -25,9 +21,9 @@ export function APIStatusBanner() {
           <div className="flex items-center gap-3 flex-1">
             <AlertTriangle className="h-5 w-5 flex-shrink-0" />
             <div className="flex-1">
-              <p className="font-semibold">API Monitoring Alert</p>
+              <p className="font-semibold">API Connection Issue</p>
               <p className="text-sm opacity-90">
-                Supabase services are experiencing issues. Some features may be temporarily unavailable.
+                Unable to reach the Supabase API. The service may be experiencing an outage or your connection may be interrupted.
               </p>
               <a
                 href="https://status.thrillwiki.com"
@@ -35,7 +31,7 @@ export function APIStatusBanner() {
                 rel="noopener noreferrer"
                 className="text-sm inline-flex items-center gap-1 mt-1 underline hover:opacity-80 transition-opacity"
               >
-                View Status Page
+                Check Status Page
                 <ExternalLink className="h-3 w-3" />
               </a>
             </div>

src/contexts/APIConnectivityContext.tsx

@@ -0,0 +1,87 @@
+import { createContext, useContext, ReactNode, useState, useEffect } from 'react';
+import { logger } from '@/lib/logger';
+
+interface APIConnectivityContextType {
+  isAPIReachable: boolean;
+  isBannerDismissed: boolean;
+  dismissBanner: () => void;
+}
+
+const APIConnectivityContext = createContext<APIConnectivityContextType | undefined>(undefined);
+
+const DISMISSAL_DURATION = 15 * 60 * 1000; // 15 minutes
+const DISMISSAL_KEY = 'api-connectivity-dismissed-until';
+const REACHABILITY_KEY = 'api-reachable';
+
+export function APIConnectivityProvider({ children }: { children: ReactNode }) {
+  const [isAPIReachable, setIsAPIReachable] = useState<boolean>(() => {
+    const stored = sessionStorage.getItem(REACHABILITY_KEY);
+    return stored !== 'false'; // Default to true, only false if explicitly set
+  });
+
+  const [dismissedUntil, setDismissedUntil] = useState<number | null>(() => {
+    const stored = localStorage.getItem(DISMISSAL_KEY);
+    return stored ? parseInt(stored) : null;
+  });
+
+  const dismissBanner = () => {
+    const until = Date.now() + DISMISSAL_DURATION;
+    localStorage.setItem(DISMISSAL_KEY, until.toString());
+    setDismissedUntil(until);
+    logger.info('API status banner dismissed', { until: new Date(until).toISOString() });
+  };
+
+  const isBannerDismissed = dismissedUntil ? Date.now() < dismissedUntil : false;
+
+  // Auto-clear dismissal when API is healthy again
+  useEffect(() => {
+    if (isAPIReachable && dismissedUntil) {
+      localStorage.removeItem(DISMISSAL_KEY);
+      setDismissedUntil(null);
+      logger.info('API status banner dismissal cleared (API recovered)');
+    }
+  }, [isAPIReachable, dismissedUntil]);
+
+  // Listen for custom events from error handler
+  useEffect(() => {
+    const handleAPIDown = () => {
+      logger.warn('API connectivity lost');
+      setIsAPIReachable(false);
+      sessionStorage.setItem(REACHABILITY_KEY, 'false');
+    };
+
+    const handleAPIUp = () => {
+      logger.info('API connectivity restored');
+      setIsAPIReachable(true);
+      sessionStorage.setItem(REACHABILITY_KEY, 'true');
+    };
+
+    window.addEventListener('api-connectivity-down', handleAPIDown);
+    window.addEventListener('api-connectivity-up', handleAPIUp);
+
+    return () => {
+      window.removeEventListener('api-connectivity-down', handleAPIDown);
+      window.removeEventListener('api-connectivity-up', handleAPIUp);
+    };
+  }, []);
+
+  return (
+    <APIConnectivityContext.Provider
+      value={{
+        isAPIReachable,
+        isBannerDismissed,
+        dismissBanner,
+      }}
+    >
+      {children}
+    </APIConnectivityContext.Provider>
+  );
+}
+
+export function useAPIConnectivity() {
+  const context = useContext(APIConnectivityContext);
+  if (context === undefined) {
+    throw new Error('useAPIConnectivity must be used within APIConnectivityProvider');
+  }
+  return context;
+}

src/contexts/CronitorHealthContext.tsx

@@ -1,63 +0,0 @@
-import { createContext, useContext, ReactNode, useState, useEffect } from 'react';
-import { useCronitorHealth as useCronitorHealthQuery } from '@/hooks/useCronitorHealth';
-
-interface CronitorHealthContextType {
-  passing: boolean | null; // null = loading/unknown
-  isLoading: boolean;
-  error: Error | null;
-  lastChecked: Date | null;
-  isBannerDismissed: boolean;
-  dismissBanner: () => void;
-}
-
-const CronitorHealthContext = createContext<CronitorHealthContextType | undefined>(undefined);
-
-const DISMISSAL_DURATION = 15 * 60 * 1000; // 15 minutes
-const DISMISSAL_KEY = 'cronitor-banner-dismissed';
-
-export function CronitorHealthProvider({ children }: { children: ReactNode }) {
-  const { data, isLoading, error } = useCronitorHealthQuery();
-  const [dismissedUntil, setDismissedUntil] = useState<number | null>(() => {
-    const stored = localStorage.getItem(DISMISSAL_KEY);
-    return stored ? parseInt(stored) : null;
-  });
-
-  const dismissBanner = () => {
-    const until = Date.now() + DISMISSAL_DURATION;
-    localStorage.setItem(DISMISSAL_KEY, until.toString());
-    setDismissedUntil(until);
-  };
-
-  const isBannerDismissed = dismissedUntil ? Date.now() < dismissedUntil : false;
-  
-  // Auto-clear dismissal when API is healthy again
-  useEffect(() => {
-    if (data?.passing === true && dismissedUntil) {
-      localStorage.removeItem(DISMISSAL_KEY);
-      setDismissedUntil(null);
-    }
-  }, [data?.passing, dismissedUntil]);
-
-  return (
-    <CronitorHealthContext.Provider
-      value={{
-        passing: data?.passing ?? null,
-        isLoading,
-        error: error as Error | null,
-        lastChecked: data ? new Date() : null,
-        isBannerDismissed,
-        dismissBanner,
-      }}
-    >
-      {children}
-    </CronitorHealthContext.Provider>
-  );
-}
-
-export function useCronitorHealth() {
-  const context = useContext(CronitorHealthContext);
-  if (context === undefined) {
-    throw new Error('useCronitorHealth must be used within CronitorHealthProvider');
-  }
-  return context;
-}

src/hooks/useCronitorHealth.ts

@@ -1,122 +0,0 @@
-import { useQuery } from '@tanstack/react-query';
-import { isRetryableError } from '@/lib/retryHelpers';
-import { handleNonCriticalError } from '@/lib/errorHandler';
-import { logger } from '@/lib/logger';
-
-const CRONITOR_API_URL = 'https://cronitor.io/api/monitors/88kG4W?env=production&format=json';
-const POLL_INTERVAL = 60000; // 60 seconds
-
-// Retry configuration
-const MAX_RETRIES = 3;
-const BASE_DELAY = 1000; // 1 second
-const MAX_DELAY = 10000; // 10 seconds
-
-interface CronitorResponse {
-  passing: boolean;
-  [key: string]: any; // Other fields we don't need
-}
-
-/**
- * Calculate exponential backoff delay with jitter
- */
-function calculateRetryDelay(failureCount: number): number {
-  const exponentialDelay = BASE_DELAY * Math.pow(2, failureCount - 1);
-  const cappedDelay = Math.min(exponentialDelay, MAX_DELAY);
-  
-  // Add ±30% jitter to prevent thundering herd
-  const jitterAmount = cappedDelay * 0.3;
-  const jitterOffset = (Math.random() * 2 - 1) * jitterAmount;
-  
-  return Math.max(0, cappedDelay + jitterOffset);
-}
-
-/**
- * Hook to poll Cronitor API for health status
- * Returns the monitor's passing status (true = healthy, false = down)
- * Implements exponential backoff retry with jitter
- */
-export function useCronitorHealth() {
-  return useQuery({
-    queryKey: ['cronitor-health'],
-    queryFn: async (): Promise<CronitorResponse> => {
-      const response = await fetch(CRONITOR_API_URL, {
-        method: 'GET',
-        headers: {
-          'Accept': 'application/json',
-        },
-      });
-      
-      if (!response.ok) {
-        throw new Error(`Cronitor API error: ${response.status}`);
-      }
-      
-      return response.json();
-    },
-    retry: (failureCount, error) => {
-      // Use existing retry logic to determine if error is retryable
-      if (!isRetryableError(error)) {
-        logger.warn('Cronitor health check: Non-retryable error', { error });
-        
-        // Log non-retryable errors to error monitoring (non-critical)
-        handleNonCriticalError(error, {
-          action: 'Cronitor Health Check - Non-Retryable Error',
-          metadata: {
-            failureCount,
-            errorType: 'non_retryable',
-          },
-        });
-        
-        return false;
-      }
-      
-      // Retry up to MAX_RETRIES times
-      if (failureCount >= MAX_RETRIES) {
-        logger.error('Cronitor health check: Max retries exhausted', {
-          error,
-          totalAttempts: MAX_RETRIES,
-        });
-        
-        // Track exhausted retries in Cronitor RUM and error monitoring
-        if (typeof window !== 'undefined' && window.cronitor) {
-          window.cronitor.track('cronitor_health_check_failed', {
-            totalAttempts: MAX_RETRIES,
-            error: error instanceof Error ? error.message : String(error),
-            severity: 'high',
-          });
-        }
-        
-        // Log to error monitoring system (non-critical, background operation)
-        handleNonCriticalError(error, {
-          action: 'Cronitor Health Check - Max Retries Exhausted',
-          metadata: {
-            totalAttempts: MAX_RETRIES,
-            errorType: 'max_retries_exhausted',
-          },
-        });
-        
-        return false;
-      }
-      
-      // Track retry attempt in Cronitor RUM
-      if (typeof window !== 'undefined' && window.cronitor) {
-        window.cronitor.track('cronitor_health_check_retry', {
-          attempt: failureCount + 1,
-          maxAttempts: MAX_RETRIES,
-          error: error instanceof Error ? error.message : String(error),
-        });
-      }
-      
-      logger.info(`Cronitor health check: Retry attempt ${failureCount + 1}/${MAX_RETRIES}`, {
-        attempt: failureCount + 1,
-        maxAttempts: MAX_RETRIES,
-        error,
-      });
-      
-      return true;
-    },
-    retryDelay: calculateRetryDelay, // Use exponential backoff with jitter
-    refetchInterval: POLL_INTERVAL, // Auto-poll every 60 seconds
-    staleTime: 30000, // Consider data stale after 30 seconds
-    gcTime: 5 * 60 * 1000, // Keep in cache for 5 minutes
-  });
-}

src/lib/errorHandler.ts

@@ -32,6 +32,35 @@ export class AppError extends Error {
   }
 }
 
+/**
+ * Check if error is a Supabase connection/API error
+ */
+function isSupabaseConnectionError(error: unknown): boolean {
+  if (error && typeof error === 'object') {
+    const supabaseError = error as { code?: string; status?: number; message?: string };
+    
+    // Connection timeout errors
+    if (supabaseError.code === 'PGRST301') return true; // Timeout
+    if (supabaseError.code === 'PGRST000') return true; // Connection error
+    
+    // 5xx server errors
+    if (supabaseError.status && supabaseError.status >= 500) return true;
+    
+    // Database connection errors (08xxx codes)
+    if (supabaseError.code?.startsWith('08')) return true;
+  }
+  
+  // Network fetch errors
+  if (error instanceof TypeError) {
+    const message = error.message.toLowerCase();
+    if (message.includes('fetch') || message.includes('network') || message.includes('failed to fetch')) {
+      return true;
+    }
+  }
+  
+  return false;
+}
+
 export const handleError = (
   error: unknown,
   context: ErrorContext
@@ -40,6 +69,11 @@ export const handleError = (
   const errorId = (context.metadata?.requestId as string) || crypto.randomUUID();
   const shortErrorId = errorId.slice(0, 8);
   
+  // Check if this is a connection error and dispatch event
+  if (isSupabaseConnectionError(error)) {
+    window.dispatchEvent(new CustomEvent('api-connectivity-down'));
+  }
+  
   // Enhanced error message and stack extraction
   let errorMessage: string;
   let stack: string | undefined;

src/lib/supabaseClient.ts

@@ -41,6 +41,12 @@ function createQueryProxy(queryBuilder: any, endpoint: string, operations: strin
                   fullOperation || 'query',
                   response?.error ? 400 : 200
                 );
+                
+                // Dispatch API connectivity up event on successful requests
+                if (!response?.error) {
+                  window.dispatchEvent(new CustomEvent('api-connectivity-up'));
+                }
+                
                 return response;
               },
               (error: any) => {