import 'package:flutter/foundation.dart';

/// Service for managing CSV updates from remote sources
/// This allows developers to update CSV data without app releases
class RemoteCsvService {
  static const String _baseUrl = 'https://your-server.com/csv/';
  
  // URLs for your CSV files (configure these)
  static const Map<String, String> _csvUrls = {
    'beans': '${_baseUrl}Coffee_Beans.csv',
    'machines': '${_baseUrl}Coffee_Machines.csv',
    'recipes': '${_baseUrl}Brew_Recipes.csv',
    'countries': '${_baseUrl}Origin_Countries.csv',
  };

  /// Download updated CSV files from remote server
  Future<bool> downloadUpdatedCsvFiles() async {
    if (kIsWeb) {
      debugPrint('CSV updates not supported on web platform');
      return false;
    }

    try {
      // This would require additional packages and permissions
      // For now, this is a template showing the approach
      
      for (final entry in _csvUrls.entries) {
        await _downloadCsvFile(entry.key, entry.value);
      }
      
      debugPrint('CSV files updated successfully');
      return true;
    } catch (e) {
      debugPrint('Error downloading CSV updates: $e');
      return false;
    }
  }

  /// Download individual CSV file
  Future<void> _downloadCsvFile(String type, String url) async {
    try {
      // Example implementation - would need http package
      debugPrint('Would download $type from $url');
      
      // Implementation would be:
      // 1. Download from URL
      // 2. Validate CSV format
      // 3. Store in app documents directory
      // 4. Update CsvDataService to check local files first
      
    } catch (e) {
      debugPrint('Error downloading $type CSV: $e');
    }
  }

  /// Check if updates are available
  Future<bool> checkForUpdates() async {
    try {
      // This would check server for newer versions
      // Compare timestamps, version numbers, etc.
      
      debugPrint('Checking for CSV updates...');
      return false; // No updates available
    } catch (e) {
      debugPrint('Error checking for updates: $e');
      return false;
    }
  }
}