const markets = { "0x1Ffe17B99b439bE0aFC831239dDECda2A790fF3A": { underlyingToken: { address: "native", decimals: 18, symbol: "BNB", }, decimals: 8, symbol: "crBNB", address: "0x1Ffe17B99b439bE0aFC831239dDECda2A790fF3A", icon: "https://ipfs.near.social/ipfs/bafkreiazuze33v5kir534vd73nzp3axja777lm5osfwvefng6um5gs6x3i", }, "0x2Bc4eb013DDee29D37920938B96d353171289B7C": { underlyingToken: { address: "0xe9e7CEA3DedcA5984780Bafc599bD69ADd087D56", decimals: 18, symbol: "BUSD", }, decimals: 8, symbol: "crBUSD", address: "0x2Bc4eb013DDee29D37920938B96d353171289B7C", icon: "https://ipfs.near.social/ipfs/bafkreibp36dfkfjzgnnbb7u4jxh57gpjmfjerc6pefmyzhueulz5ovd5xy", }, "0xd83c88db3a6ca4a32fff1603b0f7ddce01f5f727": { underlyingToken: { address: "0x8AC76a51cc950d9822D68b83fE1Ad97B32Cd580d", decimals: 18, symbol: "USDC", }, decimals: 8, symbol: "crUSDC", address: "0xd83c88db3a6ca4a32fff1603b0f7ddce01f5f727", icon: "https://ipfs.near.social/ipfs/bafkreie4jihoa76mgyzxhw2yrapihzu2qhkjz6m7u4opoxjebzg6zc2lla", }, "0xb31f5d117541825D6692c10e4357008EDF3E2BCD": { underlyingToken: { address: "0x2170Ed0880ac9A755fd29B2688956BD959F933F8", decimals: 18, symbol: "ETH", }, decimals: 8, symbol: "crETH", address: "0xb31f5d117541825D6692c10e4357008EDF3E2BCD", icon: "https://ipfs.near.social/ipfs/bafkreibspnls7q67q25r2ifv2rrfmvzl744pzuh3s5ekigeqkmyycl2auq", }, "0xEF6d459FE81C3Ed53d292c936b2df5a8084975De": { underlyingToken: { address: "0x55d398326f99059fF775485246999027B3197955", decimals: 18, symbol: "USDT", }, decimals: 8, symbol: "crUSDT", address: "0xEF6d459FE81C3Ed53d292c936b2df5a8084975De", icon: "https://ipfs.near.social/ipfs/bafkreidio5g2ches6dn3vbswsdzylkillaomay6xzkri7vasxityoqig5m", }, "0x3942936782d788ce69155F776A51A5F1C9dd9B22": { underlyingToken: { address: "0xF8A0BF9cF54Bb92F17374d9e9A321E6a111a51bD", decimals: 18, symbol: "LINK", }, decimals: 8, symbol: "crLINK", address: "0x3942936782d788ce69155F776A51A5F1C9dd9B22", icon: "https://ipfs.near.social/ipfs/bafkreidrq7qk3d6epwaxobq4gk7yowljr5tnslxwrsbd7vnw3srkt7ok3u", }, "0x81C15D3E956e55e77E1f3F257f0A65Bd2725fC55": { underlyingToken: { address: "0x3EE2200Efb3400fAbB9AacF31297cBdD1d435D47", decimals: 18, symbol: "ADA", }, decimals: 8, symbol: "crADA", address: "0x81C15D3E956e55e77E1f3F257f0A65Bd2725fC55", icon: "https://ipfs.near.social/ipfs/bafkreie5pjxsidvi3pb3frqo53hjlvaolb4aqagj5drku5ksmtcdyj7fiq", }, }; const MULTICALL_ABI = [ { inputs: [ { internalType: "bool", name: "requireSuccess", type: "bool" }, { components: [ { internalType: "address", name: "target", type: "address" }, { internalType: "bytes", name: "callData", type: "bytes" }, ], internalType: "struct Multicall2.Call[]", name: "calls", type: "tuple[]", }, ], name: "tryAggregate", outputs: [ { components: [ { internalType: "bool", name: "success", type: "bool" }, { internalType: "bytes", name: "returnData", type: "bytes" }, ], internalType: "struct Multicall2.Result[]", name: "returnData", type: "tuple[]", }, ], stateMutability: "nonpayable", type: "function", }, ]; const OTOKEN_ABI = [ { inputs: [], name: "totalSupply", outputs: [{ internalType: "uint256", name: "", type: "uint256" }], stateMutability: "view", type: "function", }, { inputs: [], name: "totalBorrows", outputs: [{ internalType: "uint256", name: "", type: "uint256" }], stateMutability: "view", type: "function", }, { inputs: [], name: "exchangeRateStored", outputs: [{ internalType: "uint256", name: "", type: "uint256" }], stateMutability: "view", type: "function", }, { constant: true, inputs: [{ internalType: "address", name: "owner", type: "address" }], name: "balanceOf", outputs: [{ internalType: "uint256", name: "", type: "uint256" }], payable: false, stateMutability: "view", type: "function", }, { constant: true, inputs: [{ internalType: "address", name: "account", type: "address" }], name: "borrowBalanceStored", outputs: [{ internalType: "uint256", name: "", type: "uint256" }], payable: false, stateMutability: "view", type: "function", }, { inputs: [], name: "supplyRatePerBlock", outputs: [{ internalType: "uint256", name: "", type: "uint256" }], stateMutability: "view", type: "function", }, { inputs: [], name: "borrowRatePerBlock", outputs: [{ internalType: "uint256", name: "", type: "uint256" }], stateMutability: "view", type: "function", }, ]; const UNITROLLER_ABI = [ { constant: true, inputs: [{ internalType: "address", name: "", type: "address" }], name: "markets", outputs: [ { internalType: "bool", name: "isListed", type: "bool" }, { internalType: "uint256", name: "collateralFactorMantissa", type: "uint256", }, { internalType: "bool", name: "isQied", type: "bool" }, ], payable: false, stateMutability: "view", type: "function", }, { inputs: [ { internalType: "address", name: "account", type: "address" }, { internalType: "contract IOToken", name: "oToken", type: "address", }, ], name: "checkMembership", outputs: [{ internalType: "bool", name: "", type: "bool" }], stateMutability: "view", type: "function", }, ]; const ORACLE_ABI = [ { inputs: [ { internalType: "contract IOToken", name: "oToken", type: "address", }, ], name: "getUnderlyingPrice", outputs: [{ internalType: "uint256", name: "price", type: "uint256" }], stateMutability: "view", type: "function", }, ]; const ERC20_ABI = [ { constant: true, inputs: [ { name: "_owner", type: "address", }, ], name: "balanceOf", outputs: [ { name: "balance", type: "uint256", }, ], payable: false, stateMutability: "view", type: "function", }, ]; const { multicallAddress, unitrollerAddress, oracleAddress, account, update, dapp, onLoad, } = props; if (!multicallAddress || !unitrollerAddress || !update || !account) return ""; const MulticallContract = new ethers.Contract( multicallAddress, MULTICALL_ABI, Ethers.provider().getSigner() ); console.log(`${dapp}-update`); const multicallv2 = (abi, calls, options, onSuccess, onError) => { const { requireSuccess, ...overrides } = options || {}; const itf = new ethers.utils.Interface(abi); const calldata = calls.map((call) => ({ target: call.address.toLowerCase(), callData: itf.encodeFunctionData(call.name, call.params), })); MulticallContract.callStatic .tryAggregate(requireSuccess || true, calldata, overrides) .then((res) => { onSuccess( res.map((call, i) => { const [result, data] = call; return result && data !== "0x" ? itf.decodeFunctionResult(calls[i].name, data) : null; }) ); }) .catch((err) => { onError?.(err); }); }; let _cTokensData = {}; let _loanToValue = null; let _underlyPrice = {}; let _liquidity = null; let _underlyingBalance = null; let _userMerberShip = null; let count = 0; let oTokensLength = Object.values(markets).length; const formatedData = (key) => { console.log(`${dapp}-${key}`, count); if (count < 5) return; count = 0; oTokensLength = Object.values(markets).length; let totalSupplyUsd = Big(0); let totalBorrowUsd = Big(0); let userTotalSupplyUsd = Big(0); let userTotalBorrowUsd = Big(0); let totalCollateralUsd = Big(0); const markets = {}; Object.values(_cTokensData).forEach((market) => { const underlyingPrice = _underlyPrice[market.address] || 1; const marketSupplyUsd = Big(market.totalSupply || 0).mul(underlyingPrice); const marketBorrowUsd = Big(market.totalBorrows || 0).mul(underlyingPrice); totalSupplyUsd = totalSupplyUsd.plus(marketSupplyUsd); totalBorrowUsd = totalBorrowUsd.plus(marketBorrowUsd); userTotalSupplyUsd = userTotalSupplyUsd.plus( Big(market.userSupply).mul(underlyingPrice) ); userTotalBorrowUsd = userTotalBorrowUsd.plus( Big(market.userBorrow).mul(underlyingPrice) ); if (_userMerberShip[market.address]) { totalCollateralUsd = totalCollateralUsd.plus( Big(market.userSupply) .mul(underlyingPrice) .mul(_loanToValue[market.address]) .div(100) ); } const supplyApy = Big(market.supplyRatePerBlock) .mul(20 * 60 * 24) .plus(1) .pow(365) .minus(1) .mul(100); const borrowApy = Big(market.borrowRatePerBlock) .mul(20 * 60 * 24) .plus(1) .pow(365) .minus(1) .mul(100); markets[market.address] = { ...market, loanToValue: _loanToValue[market.address], liquidity: _liquidity[market.address], underlyingPrice: underlyingPrice, userUnderlyingBalance: _underlyingBalance[market.address], userMerberShip: _userMerberShip[market.address], supplyApy: supplyApy.toFixed(2) + "%", borrowApy: borrowApy.toFixed(2) + "%", dapp, }; }); onLoad({ markets, totalSupplyUsd: totalSupplyUsd.toString(), totalBorrowUsd: totalBorrowUsd.toString(), userTotalSupplyUsd: userTotalSupplyUsd.toString(), userTotalBorrowUsd: userTotalBorrowUsd.toString(), totalCollateralUsd: totalCollateralUsd.toString(), }); }; const getUnitrollerData = () => { const calls = []; const oTokens = Object.values(markets); oTokens.forEach((token) => { calls.push({ address: unitrollerAddress, name: "markets", params: [token.address], }); if (account) { calls.push({ address: unitrollerAddress, name: "checkMembership", params: [account, token.address], }); } }); multicallv2( UNITROLLER_ABI, calls, {}, (res) => { _loanToValue = {}; _userMerberShip = {}; for (let i = 0, len = res.length; i < len; i++) { const index = Math.floor(i / (account ? 2 : 1)); const mod = i % (account ? 2 : 1); switch (mod) { case 0: _loanToValue[oTokens[index].address] = ethers.utils.formatUnits( res[i][1]._hex, 16 ); break; case 1: _userMerberShip[oTokens[index].address] = res[i][0]; break; default: } } count++; formatedData("getUnitrollerData"); }, (err) => { console.log("error-getUnitrollerData", err); setTimeout(() => { getUnitrollerData(); }, 1000); } ); }; const getUnderlyPrice = () => { if (!oracleAddress) return; asyncFetch( "https://api.coingecko.com/api/v3/simple/price?ids=binancecoin&vs_currencies=usd" ).then((res) => { const data = res.body || []; const bnbPrice = data.binancecoin.usd; const oTokens = Object.keys(markets); const calls = oTokens.map((token) => ({ address: oracleAddress, name: "getUnderlyingPrice", params: [token], })); multicallv2( ORACLE_ABI, calls, {}, (res) => { _underlyPrice = {}; for (let i = 0, len = res.length; i < len; i++) { _underlyPrice[oTokens[i]] = Big( ethers.utils.formatUnits( res[i][0]._hex, 36 - markets[oTokens[i]].underlyingToken.decimals ) ) .mul(bnbPrice) .toString(); } count++; formatedData("getUnderlyPrice"); }, (err) => { console.log("error-getUnderlyPrice", err); } ); }); }; const getOTokenLiquidity = () => { const assets = Object.values(markets); let nativeOToken = ""; const calls = assets .filter((market) => { if (market.underlyingToken.address === "native") nativeOToken = market.address; return ( market.underlyingToken.address && market.underlyingToken.address !== "native" ); }) .map((market) => ({ address: market.underlyingToken.address, name: "balanceOf", params: [market.address], })); multicallv2( ERC20_ABI, calls, {}, (res) => { _liquidity = {}; for (let i = 0, len = res.length; i < len; i++) { const oToken = markets[calls[i].params[0]]; _liquidity[oToken.address] = ethers.utils.formatUnits( res[i][0]._hex, oToken.underlyingToken.decimals ); } const provider = Ethers.provider(); if (nativeOToken) { provider.getBalance(nativeOToken).then((rawBalance) => { _liquidity[nativeOToken] = ethers.utils.formatUnits( rawBalance._hex, 18 ); count++; formatedData("getOTokenLiquidity"); }); } else { count++; formatedData("getOTokenLiquidity"); } }, () => { setTimeout(() => { getOTokenLiquidity(); }, 500); } ); }; const getWalletBalance = () => { let nativeOToken = ""; const underlyingTokens = Object.values(markets) .filter((market) => { if (market.underlyingToken.address === "native") nativeOToken = market.address; return ( market.underlyingToken.address && market.underlyingToken.address !== "native" ); }) .map((market) => ({ ...market.underlyingToken, oTokenAddress: market.address, })); const calls = underlyingTokens.map((token) => ({ address: token.address, name: "balanceOf", params: [account], })); multicallv2( ERC20_ABI, calls, {}, (res) => { _underlyingBalance = {}; for (let i = 0, len = res.length; i < len; i++) { _underlyingBalance[underlyingTokens[i].oTokenAddress] = ethers.utils.formatUnits( res[i][0]._hex, underlyingTokens[i].decimals ); } const provider = Ethers.provider(); provider.getBalance(account).then((rawBalance) => { _underlyingBalance[nativeOToken] = ethers.utils.formatUnits( rawBalance._hex, 18 ); count++; formatedData("underlyingTokens"); }); }, () => { setTimeout(() => { getWalletBalance(); }, 500); } ); }; const getCTokenData = (oToken) => { if (oTokensLength === 0) return; const calls = [ { address: oToken.address, name: "exchangeRateStored", }, { address: oToken.address, name: "totalSupply", }, { address: oToken.address, name: "totalBorrows", }, { address: oToken.address, name: "balanceOf", params: [account], }, { address: oToken.address, name: "borrowBalanceStored", params: [account], }, { address: oToken.address, name: "borrowRatePerBlock", }, { address: oToken.address, name: "supplyRatePerBlock", }, ]; multicallv2( OTOKEN_ABI, calls, {}, (res) => { oTokensLength--; const exchangeRateStored = ethers.utils.formatUnits( res[0][0]._hex, 10 + oToken.underlyingToken.decimals ); const totalSupply = ethers.utils.formatUnits( res[1][0]._hex, oToken.decimals ); const userSupply = ethers.utils.formatUnits( res[3][0]._hex, oToken.decimals ); _cTokensData[oToken.address] = { ...oToken, exchangeRateStored, totalSupply: Big(totalSupply).mul(exchangeRateStored).toString(), totalBorrows: ethers.utils.formatUnits( res[2][0]._hex, oToken.underlyingToken.decimals ), supplyRatePerBlock: ethers.utils.formatUnits(res[6][0]._hex, 18), borrowRatePerBlock: ethers.utils.formatUnits(res[5][0]._hex, 18), userSupply: Big(userSupply).mul(exchangeRateStored).toString(), userBorrow: ethers.utils.formatUnits( res[4][0]._hex, oToken.underlyingToken.decimals ), }; if (oTokensLength === 0) { count++; formatedData("oTokens data"); } }, () => { setTimeout(() => { getCTokenData(oToken); }, 500); } ); }; const getCTokensData = () => { Object.values(markets).forEach((market) => { getCTokenData(market); }); }; const init = () => { getUnitrollerData(); getUnderlyPrice(); getOTokenLiquidity(); getWalletBalance(); getCTokensData(); }; init();