Function exportQuery

frontend/src/utils/queryExport.ts:277–300

(
  queryResult: QueryResult,
  format: 'csv' | 'json' | 'sql' | 'pdf',
  filename?: string
)

 * Unified export function that handles all formats
 */
export const exportQuery = async (
  queryResult: QueryResult,
  format: 'csv' | 'json' | 'sql' | 'pdf',
  filename?: string
): Promise<void> => {
  const baseName = filename || 'DataKit_Query_Export';

  switch (format) {
    case 'csv':
      return exportQueryAsCSV(queryResult.results, queryResult.columns, baseName);
    
    case 'json':
      return exportQueryAsJSON(queryResult, { filename: baseName });
    
    case 'sql':
      return exportQueryAsSQL(queryResult.query, baseName);
    
    case 'pdf':
      return exportQueryAsPDF(queryResult, baseName);
    
    default:
      throw new Error(`Unsupported export format: ${format}`);
  }
};