fix: API health check timeout javítása és több végpont fallback hozzáadása

Co-authored-by: aider (ollama_chat/minimax-m2:cloud) <aider@aider.chat>

webui/lib/api.ts

@@ -88,6 +88,14 @@ export interface QueueStatus {
   size: number;
 }
 
+export interface HealthStatus {
+  status: 'ok' | 'error' | 'degraded';
+  message: string;
+  timestamp: string;
+  uptime?: number;
+  version?: string;
+}
+
 class ApiClient {
   // Get base URL dynamically at runtime to ensure server config is loaded
   private getBaseUrl(): string {
@@ -146,6 +154,73 @@ class ApiClient {
     return response.json();
   }
 
+  // Enhanced health check with multiple endpoints and better error handling
+  async checkHealth(): Promise<HealthStatus> {
+    const endpoints = ['/health', '/status', '/'];
+    
+    for (const endpoint of endpoints) {
+      try {
+        const response = await fetch(`${this.getBaseUrl()}${endpoint}`, {
+          method: 'GET',
+          headers: {
+            'Content-Type': 'application/json',
+          },
+          // Add timeout to prevent hanging requests
+          signal: AbortSignal.timeout(5000),
+        });
+
+        if (response.ok) {
+          const data = await response.json();
+          
+          // Normalize different possible response formats
+          const healthStatus: HealthStatus = {
+            status: 'ok',
+            message: 'API is running',
+            timestamp: new Date().toISOString(),
+            uptime: data.uptime,
+            version: data.version || data.build || data.git_version,
+          };
+
+          // Handle different response formats
+          if (data.status) {
+            if (data.status === 'healthy' || data.status === 'running' || data.status === 'ok') {
+              healthStatus.status = 'ok';
+              healthStatus.message = data.message || 'API is running';
+            } else if (data.status === 'degraded') {
+              healthStatus.status = 'degraded';
+              healthStatus.message = data.message || 'API is running in degraded mode';
+            } else {
+              healthStatus.status = 'error';
+              healthStatus.message = data.message || 'API status is unknown';
+            }
+          }
+
+          return healthStatus;
+        }
+      } catch (error) {
+        // Continue to next endpoint if this one fails
+        console.warn(`Health check failed for endpoint ${endpoint}:`, error);
+        continue;
+      }
+    }
+
+    // If all endpoints fail
+    throw new Error('All health check endpoints are unavailable');
+  }
+
+  // Alternative simple connectivity check
+  async checkConnectivity(): Promise<boolean> {
+    try {
+      const response = await fetch(`${this.getBaseUrl()}`, {
+        method: 'HEAD',
+        signal: AbortSignal.timeout(3000),
+      });
+      return response.ok || response.status < 500; // Accept any non-server-error response
+    } catch (error) {
+      return false;
+    }
+  }
+
   // Generation endpoints
   async generateImage(params: GenerationRequest): Promise<JobInfo> {
     return this.request<JobInfo>('/generate/text2img', {