import { createClient } from '@clickhouse/client';
import config from '../config';

// Create ClickHouse client with error handling
const createClickHouseClient = () => {
  try {
    return createClient({
      host: `http://${config.clickhouse.host}:${config.clickhouse.port}`,
      username: config.clickhouse.user,
      password: config.clickhouse.password,
      database: config.clickhouse.database,
    });
  } catch (error) {
    console.error('Error creating ClickHouse client:', error);
    // Return a mock client for development that logs operations instead of executing them
    return {
      query: async ({ query, values }: { query: string; values?: any[] }) => {
        console.log('ClickHouse query (mock):', query, values);
        return { rows: [] };
      },
      close: async () => {
        console.log('ClickHouse connection closed (mock)');
      }
    };
  }
};

const clickhouse = createClickHouseClient();


export default clickhouse;