const markets = { "0xAd7f33984bed10518012013D4aB0458D37FEE6F3": { underlyingToken: { address: "0xe5d7c2a44ffddf6b295a15c148167daaaf5cf34f", decimals: 18, symbol: "WETH", }, decimals: 8, symbol: "meWETH", address: "0xAd7f33984bed10518012013D4aB0458D37FEE6F3", icon: "https://ipfs.near.social/ipfs/bafkreihyzmiuawyekwiyofkzm25xzrrfenhvadi6lb42juvq7tah2u7ha4", }, "0xf669C3C03D9fdF4339e19214A749E52616300E89": { underlyingToken: { address: "0xA219439258ca9da29E9Cc4cE5596924745e12B93", decimals: 6, symbol: "USDT", }, decimals: 8, symbol: "meUSDT", address: "0xf669C3C03D9fdF4339e19214A749E52616300E89", icon: "https://ipfs.near.social/ipfs/bafkreih45jy7ggj45ck34rf736kb67smsoa52wd7e46c2grh6etd3bhe5i", }, "0x1f27f81C1D13Dd96A3b75d42e3d5d92b709869AA": { underlyingToken: { address: "0x4af15ec2a0bd43db75dd04e62faa3b8ef36b00d5", decimals: 18, symbol: "DAI", }, decimals: 8, symbol: "meDAI", address: "0x1f27f81C1D13Dd96A3b75d42e3d5d92b709869AA", icon: "https://ipfs.near.social/ipfs/bafkreieuxntkdzi2mzkzdcbk6kahwxqpftxnipxcwc4oe4p4jm2rhj2xhu", }, "0x333D8b480BDB25eA7Be4Dd87EEB359988CE1b30D": { underlyingToken: { address: "0x176211869ca2b568f2a7d4ee941e073a821ee1ff", decimals: 6, symbol: "USDC", }, decimals: 8, symbol: "meUSDC", address: "0x333D8b480BDB25eA7Be4Dd87EEB359988CE1b30D", icon: "https://ipfs.near.social/ipfs/bafkreie4jihoa76mgyzxhw2yrapihzu2qhkjz6m7u4opoxjebzg6zc2lla", }, }; 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", }, { inputs: [{ internalType: "address", name: "account", type: "address" }], name: "getAccountSnapshot", outputs: [ { internalType: "uint256", name: "", type: "uint256" }, { internalType: "uint256", name: "", type: "uint256" }, { internalType: "uint256", name: "", type: "uint256" }, { internalType: "uint256", name: "", type: "uint256" }, ], 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", }, { constant: true, inputs: [ { internalType: "uint8", name: "", type: "uint8" }, { internalType: "address", name: "", type: "address" }, ], name: "supplyRewardSpeeds", outputs: [{ internalType: "uint256", name: "", type: "uint256" }], payable: false, stateMutability: "view", type: "function", }, { constant: true, inputs: [ { internalType: "uint8", name: "", type: "uint8" }, { internalType: "address", name: "", type: "address" }, ], name: "borrowRewardSpeeds", outputs: [{ internalType: "uint256", name: "", type: "uint256" }], payable: false, 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 DISTRIBUTION_ABI = [ { inputs: [ { internalType: "address", name: "", type: "address" }, { internalType: "address", name: "", type: "address" }, ], name: "rewardMarketState", outputs: [ { internalType: "uint256", name: "supplySpeed", type: "uint256" }, { internalType: "uint224", name: "supplyIndex", type: "uint224" }, { internalType: "uint32", name: "supplyBlock", type: "uint32" }, { internalType: "uint256", name: "borrowSpeed", type: "uint256" }, { internalType: "uint224", name: "borrowIndex", type: "uint224" }, { internalType: "uint32", name: "borrowBlock", type: "uint32" }, ], stateMutability: "view", type: "function", }, { inputs: [ { internalType: "address", name: "", type: "address" }, { internalType: "address", name: "", type: "address" }, ], name: "rewardAccountState", outputs: [ { internalType: "uint256", name: "rewardAccrued", type: "uint256" }, ], stateMutability: "view", type: "function", }, ]; const REWARD_TOKEN = { address: "0x43E8809ea748EFf3204ee01F08872F063e44065f", icon: "https://ipfs.near.social/ipfs/bafkreihtevj6whwlekvhfymajsosbhkqxljqwumgniacye724pxvt24tk4", symbol: "MENDI", }; const { multicallAddress, unitrollerAddress, oracleAddress, distributionAddress, account, update, dapp, onLoad, } = props; if (!multicallAddress || !unitrollerAddress || !update || !account) return ""; const MulticallContract = new ethers.Contract( multicallAddress, MULTICALL_ABI, Ethers.provider().getSigner() ); console.log(`${dapp}-update`); const multicallv2 = (abi, calls, options, onSuccess, onError) => { const { requireSuccess, ...overrides } = options || {}; const itf = new ethers.utils.Interface(abi); const calldata = calls.map((call) => ({ target: call.address.toLowerCase(), callData: itf.encodeFunctionData(call.name, call.params), })); MulticallContract.callStatic .tryAggregate(requireSuccess || true, calldata, overrides) .then((res) => { onSuccess( res.map((call, i) => { const [result, data] = call; return result && data !== "0x" ? itf.decodeFunctionResult(calls[i].name, data) : null; }) ); }) .catch((err) => { onError?.(err); }); }; let _cTokensData = {}; let _loanToValue = null; let _underlyPrice = {}; let _liquidity = null; let _underlyingBalance = null; let _userMerberShip = null; let _rewards = {}; let _accountRewards = {}; let count = 0; let oTokensLength = Object.values(markets).length; let usdcPrice = 0; const formatedData = (key) => { console.log(`${dapp}-${key}`, count); if (count < 6) 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); let totalAccountDistributionApy = 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 distributionSupplyApy = _rewards[market.address].supply .div(marketSupplyUsd.eq(0) ? 1 : marketSupplyUsd) .mul(100) .toFixed(2); const distributionBorrowApy = _rewards[market.address].borrow .div(marketBorrowUsd.eq(0) ? 1 : marketBorrowUsd) .mul(100) .toFixed(2); totalAccountDistributionApy = totalAccountDistributionApy .plus(distributionSupplyApy) .plus(distributionBorrowApy); const supplyApy = Big(market.supplyRatePerBlock) .mul(60 * 60 * 24) .plus(1) .pow(365) .minus(1) .mul(100); const borrowApy = Big(market.borrowRatePerBlock) .mul(60 * 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) + "%", distributionApy: [ { ...REWARD_TOKEN, supply: distributionSupplyApy + "%", borrow: distributionBorrowApy + "%", }, ], dapp, rewards, }; }); let rewards; if (_accountRewards && Big(_accountRewards.reward || 0).gt(0)) { const dailyRewards = totalAccountDistributionApy .mul(userTotalSupplyUsd.add(userTotalBorrowUsd)) .div(365 * 100) .div(_accountRewards.price); rewards = [ { ...REWARD_TOKEN, dailyRewards: dailyRewards.lt(0.000001) ? "0.000001" : dailyRewards.toString(), price: _accountRewards.price, unclaimed: _accountRewards.reward, }, ]; } onLoad({ markets, rewards, 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; 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]] = ethers.utils.formatUnits( res[i][0]._hex, 36 - markets[oTokens[i]].underlyingToken.decimals ); if (oTokens[i] === "0x333D8b480BDB25eA7Be4Dd87EEB359988CE1b30D") usdcPrice = _underlyPrice[oTokens[i]]; } 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: "supplyRatePerBlock", }, { address: oToken.address, name: "borrowRatePerBlock", }, { address: oToken.address, name: "getAccountSnapshot", params: [account], }, ]; multicallv2( OTOKEN_ABI, calls, {}, (res) => { oTokensLength--; const exchangeRateStored = ethers.utils.formatUnits( res[0][0]._hex, 10 + oToken.underlyingToken.decimals ); const userSupply = ethers.utils.formatUnits( res[5][1]._hex, oToken.decimals ); const totalSupply = ethers.utils.formatUnits( res[1][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[3][0]._hex, 18), borrowRatePerBlock: ethers.utils.formatUnits(res[4][0]._hex, 18), userSupply: Big(userSupply).mul(exchangeRateStored).toString(), userBorrow: ethers.utils.formatUnits( res[5][2]._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 getUserRewards = (price) => { const cTokens = Object.keys(markets); const calls = cTokens.map((token) => ({ address: distributionAddress, name: "rewardAccountState", params: [token, account], })); multicallv2( DISTRIBUTION_ABI, calls, {}, (res) => { let totalRewards = Big(0); for (let i = 0, len = cTokens.length; i < len; i++) { totalRewards = totalRewards.plus( ethers.utils.formatUnits(res[i][0]._hex, 18) ); } _accountRewards = { price, reward: totalRewards.toString(), }; count++; formatedData("rewards"); }, (err) => { console.log(dapp + " error-user-rewards", err); } ); }; const getRewards = () => { asyncFetch( "https://api.coingecko.com/api/v3/simple/price?ids=mendi-finance&vs_currencies=usd" ).then((response) => { const data = response.body || []; const price = data["mendi-finance"].usd || "0.007946487544739755"; const cTokens = Object.keys(markets); const calls = cTokens.map((token) => ({ address: distributionAddress, name: "rewardMarketState", params: [REWARD_TOKEN.address, token], })); multicallv2( DISTRIBUTION_ABI, calls, {}, (res) => { for (let i = 0, len = cTokens.length; i < len; i++) { const token = cTokens[i]; const supply = Big(ethers.utils.formatUnits(res[i][0]._hex, 18)).mul( price ); const borrow = Big(ethers.utils.formatUnits(res[i][3]._hex, 18)).mul( price ); _rewards[token] = { borrow: borrow.mul(60 * 60 * 24 * 365), supply: supply.mul(60 * 60 * 24 * 365), }; } getUserRewards(price); }, (err) => { console.log("error-rewards", err); } ); }); }; const init = () => { getUnitrollerData(); getUnderlyPrice(); getOTokenLiquidity(); getWalletBalance(); getCTokensData(); getRewards(); }; init();