import { useEffect } from 'react';
import { useAuth } from '@/hooks/useAuth';
import { useUnitPreferences } from '@/hooks/useUnitPreferences';
import { logger } from '@/lib/logger';
import * as storage from '@/lib/localStorage';

export function useLocationAutoDetect() {
  const { user } = useAuth();
  const { preferences, autoDetectPreferences, loading } = useUnitPreferences();

  useEffect(() => {
    // Only run auto-detection after preferences have loaded
    if (loading) return;
    
  // Check if localStorage is available
  if (!storage.isLocalStorageAvailable()) {
    logger.warn('localStorage is not available, skipping location auto-detection');
    return;
  }
    
    // Check if we've already attempted detection
    const hasAttemptedDetection = storage.getItem('location_detection_attempted');
    
    // Auto-detect if we haven't attempted it yet and auto_detect is enabled
    if (preferences.auto_detect && !hasAttemptedDetection) {
      autoDetectPreferences().then(() => {
        storage.setItem('location_detection_attempted', 'true');
      }).catch((error) => {
        logger.error('Failed to auto-detect location', { error });
        storage.setItem('location_detection_attempted', 'true');
      });
    }
  }, [user, loading, preferences.auto_detect]);
}