feat: add Kensei adapter for tracking total trading volume (#4585)

Author: harisato

dexs/kensei/index.ts

@@ -0,0 +1,44 @@
+import { Dependencies, FetchOptions, SimpleAdapter } from '../../adapters/types';
+import { CHAIN } from '../../helpers/chains';
+import { queryDuneSql } from '../../helpers/dune';
+
+const fetch = async (_a:any, _b:any, options: FetchOptions) => {
+  const query = `
+    WITH buy_volume AS (
+        SELECT SUM(usd_in) AS total_buy_usd
+        FROM query_5971327
+        WHERE block_time >= from_unixtime(${options.startTimestamp})
+          AND block_time < from_unixtime(${options.endTimestamp})
+    ),
+    sell_volume AS (
+        SELECT SUM(usd_out) AS total_sell_usd
+        FROM query_5971367
+        WHERE block_time >= from_unixtime(${options.startTimestamp})
+          AND block_time < from_unixtime(${options.endTimestamp})
+    )
+    SELECT
+        COALESCE(b.total_buy_usd, 0) + COALESCE(s.total_sell_usd, 0) AS total_volume_usd
+    FROM buy_volume b
+    CROSS JOIN sell_volume s;
+  `
+
+  let dailyVolume = options.createBalances()
+  const result = await queryDuneSql(options, query)
+
+  if (result && result.length > 0) {
+    dailyVolume.addUSDValue(result[0].total_volume_usd)
+  }
+
+  return { dailyVolume }
+}
+
+const adapter: SimpleAdapter = {
+  version: 1,
+  fetch,
+  chains: [CHAIN.KATANA],
+  start: '2025-10-16',
+  dependencies: [Dependencies.DUNE],
+  isExpensiveAdapter: true,
+}
+
+export default adapter