Adding Endur to Defillama (DefiLlama#12438)

Co-authored-by: ariyan-hashstack <[email protected]>

Author: 0x-minato

projects/endur/erc4626abi.js

@@ -0,0 +1,48 @@
+const ERC4626Abi = [
+    {
+      "name": "asset",
+      "type": "function",
+      "inputs": [],
+      "outputs": [
+        {
+          "type": "core::starknet::contract_address::ContractAddress"
+        }
+      ],
+      "state_mutability": "view"
+    },
+    {
+      "name": "balanceOf",
+      "type": "function",
+      "inputs": [
+        {
+          "name": "account",
+          "type": "core::starknet::contract_address::ContractAddress"
+        }
+      ],
+      "outputs": [
+        {
+          "type": "core::integer::u256"
+        }
+      ],
+      "state_mutability": "view",
+      "customInput": 'address',
+    },
+    {
+      "name": "total_assets",
+      "type": "function",
+      "inputs": [],
+      "outputs": [
+        {
+          "type": "core::integer::u256"
+        }
+      ],
+      "state_mutability": "view"
+    }
+]
+  
+const ERC4626AbiMap = {}
+ERC4626Abi.forEach(i => ERC4626AbiMap[i.name] = i)
+  
+module.exports = {
+    ERC4626AbiMap
+}

projects/endur/index.js

@@ -0,0 +1,33 @@
+/**
+ * Endur is a liquid staking solution for STRK
+ */
+
+const {multiCall} = require("../helper/chain/starknet");
+const ADDRESSES = require('../helper/coreAssets.json');
+const { ERC4626AbiMap } = require('./erc4626abi')
+
+const LSTDATA = [{ //data of an LST contract; currently only xSTRK 
+    address: "0x28d709c875c0ceac3dce7065bec5328186dc89fe254527084d1689910954b0a", // address of xSTRK vault contract
+    token: ADDRESSES.starknet.STRK
+}]
+
+// returns the tvl of the all LST tokens in terms of their native token 
+async function tvl(api) {
+    const totalAssets = await multiCall({
+        calls: LSTDATA.map(c => c.address),
+        abi: ERC4626AbiMap.total_assets
+    });
+    // the balance of the tokens will be xTOKEN 
+    // considering all 1 TOKEN = 1xTOKEN
+    // eg for now we only have xSTRK i.e 1 STRK = 1 xSTRK
+
+    api.addTokens(LSTDATA.map(c => c.token), totalAssets);
+}
+
+module.exports = {
+    doublecounted: true,
+    methodology: "The TVL is the total staked STRK managed by Endur's LST",
+    starknet: {
+        tvl,
+    },
+};