Add kromatika fees adapter (#4581)

* add kromatica fees adapter

* changes

* refactor codes

---------

Co-authored-by: Eden <[email protected]>

Author: 0saurabh0

fees/kromatika.ts

@@ -0,0 +1,108 @@
+import { FetchOptions, SimpleAdapter } from "../adapters/types";
+import { CHAIN } from "../helpers/chains";
+
+const CONTRACTS: Record<string, string> = {
+  [CHAIN.OPTIMISM]: "0x7314af7d05e054e96c44d7923e68d66475ffaab8",
+  [CHAIN.ETHEREUM]: "0xd1fdf0144be118c30a53e1d08cc1e61d600e508e",
+  [CHAIN.ARBITRUM]: "0x02c282f60fb2f3299458c2b85eb7e303b25fc6f0",
+  [CHAIN.POLYGON]: "0x03f490ae5b59e428e6692059d0dca1b87ed42ae1",
+};
+
+const ProtoolFees = 'Protocol Fees'
+const KeepersFees = 'Keepers Fees'
+
+const fetch = async (options: FetchOptions) => {
+  const contract = CONTRACTS[options.chain];
+  const dailyFees = options.createBalances();
+  const dailyProtocolRevenue = options.createBalances();
+  const dailySupplySideRevenue = options.createBalances();
+
+  // Get KROM token address and protocol fee percentage
+  const [kromToken, protocolFeeRaw] = await Promise.all([
+    options.api.call({ target: contract, abi: "function KROM() view returns (address)" }),
+    options.api.call({ target: contract, abi: "function protocolFee() view returns (uint32)" }),
+  ]);
+
+  // Fetch LimitOrderProcessed events to get service fees paid in KROM
+  const logs = await options.getLogs({
+    target: contract,
+    eventAbi: "event LimitOrderProcessed(address indexed monitor, uint256 indexed tokenId, uint256 serviceFeePaid)",
+  });
+
+  const PROTOCOL_FEE_BASE = 100000n;
+  const protocolFee = BigInt(protocolFeeRaw);
+
+  logs.forEach((log: any) => {
+    const serviceFee = BigInt(log.serviceFeePaid || log[2] || 0);
+    if (serviceFee === 0n) return;
+
+    // Split: keepers gets base share, protocol gets remainder  
+    const keepersShare = serviceFee * PROTOCOL_FEE_BASE / (PROTOCOL_FEE_BASE + protocolFee);
+    const protocolShare = serviceFee - keepersShare;
+
+    dailyFees.add(kromToken, protocolShare, ProtoolFees)
+    dailyFees.add(kromToken, keepersShare, KeepersFees)
+
+    dailyProtocolRevenue.add(kromToken, protocolShare, ProtoolFees)
+    dailySupplySideRevenue.add(kromToken, keepersShare, KeepersFees)
+  });
+
+  return {
+    dailyFees,
+    dailyUserFees: dailyFees,
+    dailyRevenue: dailyProtocolRevenue,
+    dailyProtocolRevenue,
+    dailySupplySideRevenue,
+  };
+};
+
+const adapter: SimpleAdapter = {
+  version: 2,
+  adapter: {
+    [CHAIN.OPTIMISM]: {
+      fetch,
+      start: "2022-08-01",
+    },
+    [CHAIN.ETHEREUM]: {
+      fetch,
+      start: "2022-01-01",
+    },
+    [CHAIN.ARBITRUM]: {
+      fetch,
+      start: "2022-08-01",
+    },
+    [CHAIN.POLYGON]: {
+      fetch,
+      start: "2022-08-01",
+    },
+  },
+  methodology: {
+    Volume: "Trading volume for limit orders processed by Kromatika.",
+    Fees: "Sum of KROM service fees emitted by LimitOrderManager when limit orders execute (LimitOrderProcessed events).",
+    UserFees: 'Users pay fees for limit order while trading on Kromatika.',
+    Revenue: "Portion of fees forwarded to the protocol fee address.",
+    ProtocolRevenue: "Service fees minus the monitor reimbursement share.",
+    SupplySideRevenue: "Share of service fees paid to execution monitors for covering gas costs.",
+  },
+  breakdownMethodology:{
+    Fees: {
+      [ProtoolFees]: 'Service fees share to Kromatika,',
+      [KeepersFees]: 'Service fees share to Chainlink Keepers,',
+    },
+    UserFees: {
+      [ProtoolFees]: 'Service fees share to Kromatika,',
+      [KeepersFees]: 'Service fees share to Chainlink Keepers,',
+    },
+    SupplySideRevenue: {
+      [KeepersFees]: 'Service fees share to Chainlink Keepers,',
+    },
+    Revenue: {
+      [ProtoolFees]: 'Service fees share to Kromatika,',
+    },
+    ProtocolRevenue: {
+      [ProtoolFees]: 'Service fees share to Kromatika,',
+    },
+  },
+};
+
+export default adapter;