init ana page with apis

lib/clickhouse.ts

@@ -0,0 +1,47 @@
+import { createClient } from '@clickhouse/client';
+
+// Create configuration object using the URL approach
+const config = {
+  url: process.env.CLICKHOUSE_URL || 'http://localhost:8123',
+  username: process.env.CLICKHOUSE_USER || 'default',
+  password: process.env.CLICKHOUSE_PASSWORD || '',
+  database: process.env.CLICKHOUSE_DATABASE || 'limq'
+};
+
+// Log configuration (removing password for security)
+console.log('ClickHouse config:', {
+  ...config,
+  password: config.password ? '****' : ''
+});
+
+// Create ClickHouse client with proper URL format
+export const clickhouse = createClient(config);
+
+// Log connection status
+console.log('ClickHouse client created with URL:', config.url);
+
+/**
+ * Execute ClickHouse query and return results
+ */
+export async function executeQuery<T>(query: string): Promise<T[]> {
+  try {
+    const result = await clickhouse.query({
+      query,
+      format: 'JSONEachRow',
+    });
+    
+    const data = await result.json();
+    return data as T[];
+  } catch (error) {
+    console.error('ClickHouse query error:', error);
+    throw error;
+  }
+}
+
+/**
+ * Execute ClickHouse query and return a single result
+ */
+export async function executeQuerySingle<T>(query: string): Promise<T | null> {
+  const results = await executeQuery<T>(query);
+  return results.length > 0 ? results[0] : null;
+}