feat(adapter): add xSUI liquid-staking TVL & staking adapter on Sui (DefiLlama#15360)

Co-authored-by: Hedy-chu <[email protected]>

Author: 0xjoi

projects/xsui/index.js

@@ -0,0 +1,32 @@
+const sui = require("../helper/chain/sui")
+
+const XSUI_INFO_ID =
+  "0x0431232199873db77a92aa645cd43521437e9cc5c6fff07fd03edb88afe0b25a"
+const XSUI_COIN_TYPE =
+  "0x2b6602099970374cf58a2a1b9d96f005fccceb81e92eb059873baf420eb6c717::x_sui::X_SUI"
+const SUI_COIN_TYPE =
+  "0x0000000000000000000000000000000000000000000000000000000000000002::sui::SUI"
+
+async function loadInfo() {
+  const obj = await sui.getObject(XSUI_INFO_ID)
+  const totalSupply = BigInt(
+    obj.fields.lst_treasury_cap.fields.total_supply.fields.value,
+  ) 
+  const stakedSui = BigInt(
+    obj.fields.storage.fields.total_sui_supply,
+  ) ; 
+  return { totalSupply, stakedSui }
+}
+
+async function tvl(api) {
+  const { stakedSui } = await loadInfo()
+
+  api.add(SUI_COIN_TYPE, stakedSui)
+}
+
+module.exports = {
+  timetravel: false,
+  methodology:
+    "Calculates the amount of SUI staked in xSUI liquid staking contracts.",
+  sui: { tvl },
+}