a lot

packages/db/src/clickhouse-client.ts

@@ -0,0 +1,51 @@
+import { createClient } from '@clickhouse/client';
+
+export const ch = createClient({
+  host: process.env.CLICKHOUSE_URL,
+  username: process.env.CLICKHOUSE_USER,
+  password: process.env.CLICKHOUSE_PASSWORD,
+  database: process.env.CLICKHOUSE_DB,
+});
+
+interface ClickhouseJsonResponse<T> {
+  data: T[];
+  rows: number;
+  statistics: { elapsed: number; rows_read: number; bytes_read: number };
+  meta: { name: string; type: string }[];
+}
+
+export async function chQueryAll<T extends Record<string, any>>(
+  query: string
+): Promise<ClickhouseJsonResponse<T>> {
+  const res = await ch.query({
+    query,
+  });
+  const json = await res.json<ClickhouseJsonResponse<T>>();
+  return {
+    ...json,
+    data: json.data.map((item) => {
+      const keys = Object.keys(item);
+      return keys.reduce((acc, key) => {
+        const meta = json.meta.find((m) => m.name === key);
+        return {
+          ...acc,
+          [key]:
+            item[key] && meta?.type.includes('Int')
+              ? parseFloat(item[key] as string)
+              : item[key],
+        };
+      }, {} as T);
+    }),
+  };
+}
+
+export async function chQuery<T extends Record<string, any>>(
+  query: string
+): Promise<T[]> {
+  return (await chQueryAll<T>(query)).data;
+}
+
+export function formatClickhouseDate(_date: Date | string) {
+  const date = typeof _date === 'string' ? new Date(_date) : _date;
+  return date.toISOString().replace('T', ' ').replace(/Z+$/, '');
+}