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config/app.config.ts

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+// Application Configuration
+// This file contains all configurable settings for the application
+
+export const appConfig = {
+  // E2B Sandbox Configuration
+  e2b: {
+    // Sandbox timeout in minutes
+    timeoutMinutes: 15,
+    
+    // Convert to milliseconds for E2B API
+    get timeoutMs() {
+      return this.timeoutMinutes * 60 * 1000;
+    },
+    
+    // Vite development server port
+    vitePort: 5173,
+    
+    // Time to wait for Vite to be ready (in milliseconds)
+    viteStartupDelay: 7000,
+    
+    // Time to wait for CSS rebuild (in milliseconds)
+    cssRebuildDelay: 2000,
+    
+    // Default sandbox template (if using templates)
+    defaultTemplate: undefined, // or specify a template ID
+  },
+  
+  // AI Model Configuration
+  ai: {
+    // Default AI model
+    defaultModel: 'openai/gpt-5-nano',
+    
+    // Available models
+    availableModels: [
+      'openai/gpt-5-nano',
+      'openai/gpt-5-mini', 
+      'openai/gpt-5',
+      'moonshotai/kimi-k2-instruct',
+      'anthropic/claude-3-5-sonnet-20241022'
+    ],
+    
+    // Model display names
+    modelDisplayNames: {
+      'openai/gpt-5-nano': 'GPT-5 Nano',
+      'openai/gpt-5-mini': 'GPT-5 Mini',
+      'openai/gpt-5': 'GPT-5',
+      'moonshotai/kimi-k2-instruct': 'Kimi K2 Instruct',
+      'anthropic/claude-3-5-sonnet-20241022': 'Claude 3.5 Sonnet'
+    },
+    
+    // Temperature settings for non-reasoning models
+    defaultTemperature: 0.7,
+    
+    // Max tokens for code generation
+    maxTokens: 8000,
+    
+    // Max tokens for truncation recovery
+    truncationRecoveryMaxTokens: 4000,
+  },
+  
+  // Code Application Configuration
+  codeApplication: {
+    // Delay after applying code before refreshing iframe (milliseconds)
+    defaultRefreshDelay: 2000,
+    
+    // Delay when packages are installed (milliseconds)
+    packageInstallRefreshDelay: 5000,
+    
+    // Enable/disable automatic truncation recovery
+    enableTruncationRecovery: true,
+    
+    // Maximum number of truncation recovery attempts per file
+    maxTruncationRecoveryAttempts: 1,
+  },
+  
+  // UI Configuration
+  ui: {
+    // Show/hide certain UI elements
+    showModelSelector: true,
+    showStatusIndicator: true,
+    
+    // Animation durations (milliseconds)
+    animationDuration: 200,
+    
+    // Toast notification duration (milliseconds)
+    toastDuration: 3000,
+    
+    // Maximum chat messages to keep in memory
+    maxChatMessages: 100,
+    
+    // Maximum recent messages to send as context
+    maxRecentMessagesContext: 20,
+  },
+  
+  // Development Configuration
+  dev: {
+    // Enable debug logging
+    enableDebugLogging: true,
+    
+    // Enable performance monitoring
+    enablePerformanceMonitoring: false,
+    
+    // Log API responses
+    logApiResponses: true,
+  },
+  
+  // Package Installation Configuration
+  packages: {
+    // Use --legacy-peer-deps flag for npm install
+    useLegacyPeerDeps: true,
+    
+    // Package installation timeout (milliseconds)
+    installTimeout: 60000,
+    
+    // Auto-restart Vite after package installation
+    autoRestartVite: true,
+  },
+  
+  // File Management Configuration
+  files: {
+    // Excluded file patterns (files to ignore)
+    excludePatterns: [
+      'node_modules/**',
+      '.git/**',
+      '.next/**',
+      'dist/**',
+      'build/**',
+      '*.log',
+      '.DS_Store'
+    ],
+    
+    // Maximum file size to read (bytes)
+    maxFileSize: 1024 * 1024, // 1MB
+    
+    // File extensions to treat as text
+    textFileExtensions: [
+      '.js', '.jsx', '.ts', '.tsx',
+      '.css', '.scss', '.sass',
+      '.html', '.xml', '.svg',
+      '.json', '.yml', '.yaml',
+      '.md', '.txt', '.env',
+      '.gitignore', '.dockerignore'
+    ],
+  },
+  
+  // API Endpoints Configuration (for external services)
+  api: {
+    // Retry configuration
+    maxRetries: 3,
+    retryDelay: 1000, // milliseconds
+    
+    // Request timeout (milliseconds)
+    requestTimeout: 30000,
+  }
+};
+
+// Type-safe config getter
+export function getConfig<K extends keyof typeof appConfig>(key: K): typeof appConfig[K] {
+  return appConfig[key];
+}
+
+// Helper to get nested config values
+export function getConfigValue(path: string): any {
+  return path.split('.').reduce((obj, key) => obj?.[key], appConfig as any);
+}
+
+export default appConfig;