/**
 * Config Cache Initialization Plugin
 * Ensures config cache is properly initialized and prevents reload loops
 * Specifically designed to fix Safari iOS issues
 */

export default defineNuxtPlugin({
  name: 'config-cache-init',
  enforce: 'pre', // Run before other plugins
  async setup() {
    console.log('[config-cache-init] Initializing config cache plugin');

    // Only run on client side
    if (typeof window === 'undefined') {
      return;
    }

    // Initialize a flag to prevent multiple initializations
    if ((window as any).__configCacheInitialized) {
      console.log('[config-cache-init] Config cache already initialized');
      return;
    }

    // Mark as initialized
    (window as any).__configCacheInitialized = true;

    // Initialize the config cache structure if not already present
    if (!(window as any).__configCache) {
      (window as any).__configCache = {
        recaptcha: null,
        registration: null,
        recaptchaLoading: false,
        registrationLoading: false,
        recaptchaError: null,
        registrationError: null
      };
      console.log('[config-cache-init] Config cache structure initialized');
    }

    // Initialize call history for circuit breaker
    if (!(window as any).__configCallHistory) {
      (window as any).__configCallHistory = {};
      console.log('[config-cache-init] Call history initialized');
    }

    // Add a global error handler to catch and prevent reload loops
    const originalError = window.onerror;
    window.onerror = function(msg, url, lineNo, columnNo, error) {
      // Check for common reload loop patterns
      if (typeof msg === 'string' && (
        msg.includes('Maximum call stack') ||
        msg.includes('too much recursion') ||
        msg.includes('RangeError')
      )) {
        console.error('[config-cache-init] Potential reload loop detected:', msg);
        // Prevent default error handling which might cause reload
        return true;
      }

      // Call original error handler if it exists
      if (originalError) {
        return originalError(msg, url, lineNo, columnNo, error);
      }
      return false;
    };

    // Add unhandled rejection handler
    window.addEventListener('unhandledrejection', (event) => {
      if (event.reason?.message?.includes('config') || 
          event.reason?.message?.includes('reload')) {
        console.error('[config-cache-init] Unhandled config-related rejection:', event.reason);
        // Prevent default which might cause reload
        event.preventDefault();
      }
    });

    console.log('[config-cache-init] Config cache plugin initialized successfully');
  }
});