Add snowbridge

src/adapters/index.ts

@@ -91,6 +91,7 @@ import intersoon from "./intersoon";
 import usdt0 from "./usdt0";
 import pheasantNetwork from "./pheasant-network";
 import teleswap from "./teleswap";
+import snowbridge from "./snowbridge";
 
 export default {
   polygon,
@@ -185,6 +186,7 @@ export default {
   usdt0,
   pheasantNetwork,
   teleswap,
+  snowbridge,
 } as {
   [bridge: string]: BridgeAdapter | AsyncBridgeAdapter;
 };

src/adapters/snowbridge/index.ts

@@ -0,0 +1,104 @@
+import { BridgeAdapter, PartialContractEventParams } from "../../helpers/bridgeAdapter.type";
+import { Chain } from "@defillama/sdk/build/general";
+import { getTxDataFromEVMEventLogs } from "../../helpers/processTransactions";
+import { constructTransferParams } from "../../helpers/eventParams";
+import { BigNumber } from "ethers";
+
+const contractAddresses = {
+  ethereum: {
+    gateway: "0x27ca963c279c93801941e1eb8799c23f407d68e7", // Gateway address
+    agent: "0xd803472c47a87D7B63E888DE53f03B4191B846a8", // Agent address
+    tokens: [
+      {
+        token: "0xba41ddf06b7ffd89d1267b5a93bfef2424eb2003", // MYTH
+      },
+      {
+        token: "0x18084fba666a33d37592fa2633fd49a74dd93a88", // tBTC v2
+      },
+    ],
+  },
+} as {
+  [chain: string]: {
+    gateway: string;
+    agent: string;
+    tokens: { token: string }[];
+  };
+};
+
+const depositParams: PartialContractEventParams = {
+  target: "",
+  topic: "Transfer(address,address,uint256)",
+  abi: ["event Transfer(address indexed from, address indexed to, uint256 value)"],
+  logKeys: {
+    blockNumber: "blockNumber",
+    txHash: "transactionHash",
+  },
+  argKeys: {
+    amount: "value",
+    from: "from",
+    to: "to",
+  },
+  argGetters: {
+    amount: (log: any) => BigNumber.from(log.value),
+  },
+  fixedEventData: {
+    token: "",
+  },
+  isDeposit: true,
+};
+
+const withdrawalParams: PartialContractEventParams = {
+  target: "",
+  topic: "Transfer(address,address,uint256)",
+  abi: ["event Transfer(address indexed from, address indexed to, uint256 value)"],
+  logKeys: {
+    blockNumber: "blockNumber",
+    txHash: "transactionHash",
+  },
+  argKeys: {
+    amount: "value",
+    from: "from",
+    to: "to",
+  },
+  fixedEventData: {
+    token: "",
+  },
+  isDeposit: false,
+};
+
+const constructParams = (chain: string) => {
+  let eventParams: PartialContractEventParams[] = [];
+
+  const contractAddressesForChain = contractAddresses[chain];
+  const gateway = contractAddressesForChain?.gateway;
+  const agent = contractAddressesForChain?.agent;
+  const tokens = contractAddressesForChain?.tokens || [];
+
+  tokens.map(({ token }) => {
+    const tokenDepositParams: PartialContractEventParams = {
+      ...depositParams,
+      target: token,
+      filter: { includeTo: [agent] },
+      fixedEventData: { ...depositParams.fixedEventData, token: token },
+    };
+    const tokenWithdrawalParams: PartialContractEventParams = {
+      ...withdrawalParams,
+      target: token,
+      isDeposit: false,
+      filter: { includeFrom: [agent] },
+      fixedEventData: { ...withdrawalParams.fixedEventData, token: token },
+    };
+    eventParams.push(tokenDepositParams, tokenWithdrawalParams);
+  });
+
+  // Return a function to fetch transaction data from event logs
+  return async (fromBlock: number, toBlock: number) =>
+    getTxDataFromEVMEventLogs("snowbridge", chain as Chain, fromBlock, toBlock, eventParams);
+};
+
+// Step 6: Export the adapter
+const adapter: BridgeAdapter = Object.fromEntries(
+  Object.keys(contractAddresses).map((chain) => [chain, constructParams(chain)])
+);
+
+export default adapter;

src/data/bridgeNetworkData.ts

@@ -1235,14 +1235,27 @@ export default [
     iconLink: "icons:butter-network",
     largeTxThreshold: 10000,
     url: "",
-    chains: ["Ethereum", "Polygon", "BSC", "Arbitrum", "Base", "Optimism", "Tron",
-      "X Layer", "MAP Relay Chain", "Kaia", "Linea",
-      "Scroll", "Mantle", "Merlin", "Blast"],
+    chains: [
+      "Ethereum",
+      "Polygon",
+      "BSC",
+      "Arbitrum",
+      "Base",
+      "Optimism",
+      "Tron",
+      "X Layer",
+      "MAP Relay Chain",
+      "Kaia",
+      "Linea",
+      "Scroll",
+      "Mantle",
+      "Merlin",
+      "Blast",
+    ],
     chainMapping: {
       "map relay chain": "map",
       "x layer": "xlayer",
       kaia: "klaytn",
-
     },
     destinationChain: "MAP Relay Chain",
   },
@@ -2438,4 +2451,18 @@ export default [
       "World Chain": "wc",
     },
   },
+  {
+    id: 96,
+    displayName: "Snowbridge",
+    bridgeDbName: "snowbridge",
+    iconLink: "icons:snowbridge",
+    slug: "snowbridge",
+    largeTxThreshold: 10000,
+    url: "https://snowbridge.xyz/",
+    chains: ["Polkadot", "Ethereum"],
+    destinationChain: "Ethereum",
+    chainMapping: {
+      snowbridge: "snowbridge",
+    },
+  },
 ] as BridgeNetwork[];