Merge pull request saltyfacu#100 from TBouder/master

Feature/ApeApi
akshaynexus · Sep 5, 2021 · c607ceb · c607ceb
2 parents aa061e2 + 4c107ba
commit c607ceb
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Showing 5 changed files with 271 additions and 3 deletions.
diff --git a/package.json b/package.json
@@ -26,8 +26,10 @@
     "autoprefixer": "^10.3.2",
     "axios": "^0.21.1",
     "dotenv-webpack": "^7.0.3",
+    "ethcall": "4.0.0",
     "ethers": "^5.4.5",
     "grapheme-splitter": "^1.0.4",
+    "memoizee": "^0.4.15",
     "next": "11.1.0",
     "next-seo": "^4.26.0",
     "postcss": "^8.3.6",

diff --git a/pages/api/vaults.js b/pages/api/vaults.js
@@ -0,0 +1,104 @@
+/******************************************************************************
+**	@Author:				The Ape Community
+**	@Twitter:				@ape_tax
+**	@Date:					Sunday September 5th 2021
+**	@Filename:				vaults.js
+******************************************************************************/
+
+import	{ethers}				from	'ethers';
+import	{Provider, Contract}	from	'ethcall';
+import	{fn}						from	'utils/fn';
+import	vaults					from	'utils/vaults.json';
+import	yVaultABI				from	'utils/yVault.abi.json';
+
+const chunk = (arr, size) => arr.reduce((acc, e, i) => (i % size ? acc[acc.length - 1].push(e) : acc.push([e]), acc), []);
+
+async function asyncForEach(array, callback) {
+	for (let index = 0; index < array.length; index++) {
+		await callback(array[index], index, array);
+	}
+}
+
+function getProvider(chain = 1) {
+	if (chain === 1) {
+		if (process.env.ALCHEMY_KEY) {
+			return new ethers.providers.AlchemyProvider('homestead', process.env.ALCHEMY_KEY);
+		} else {
+			return new ethers.providers.InfuraProvider('homestead', '9aa3d95b3bc440fa88ea12eaa4456161');
+		}
+	} else if (chain === 137) {
+		return new ethers.providers.JsonRpcProvider('https://rpc-mainnet.matic.network');
+	} else if (chain === 250) {
+		return new ethers.providers.JsonRpcProvider('https://rpcapi.fantom.network');
+	} else if (chain === 56) {
+		return new ethers.providers.JsonRpcProvider('https://bsc-dataseed.binance.org');
+	} else if (chain === 1337) {
+		return new ethers.providers.JsonRpcProvider('http://localhost:8545');
+	}
+	return (new ethers.providers.AlchemyProvider('homestead', process.env.ALCHEMY_KEY));
+}
+
+async function newEthCallProvider(provider) {
+	const	ethcallProvider = new Provider();
+	await ethcallProvider.init(provider);
+	return ethcallProvider;
+}
+
+export default fn(async ({network = 1}) => {
+	network = Number(network);
+	const	ethcallProvider = await newEthCallProvider(getProvider(network));
+	const	_vaults = [];
+	const	_calls = [];
+
+	Object.values(vaults).forEach((v) => {
+		if (v.CHAIN_ID !== network || v.VAULT_TYPE === 'weird') {
+			return;
+		}
+		const	vaultContract = new Contract(v.VAULT_ADDR, yVaultABI);
+		_calls.push(...[
+			vaultContract.apiVersion(),
+			vaultContract.depositLimit(),
+			vaultContract.totalAssets(),
+			vaultContract.availableDepositLimit(),
+			vaultContract.pricePerShare(),
+			vaultContract.decimals(),
+		]);
+	});
+	const	callResult = await ethcallProvider.all(_calls);
+	const	chunkedCallResult = chunk(callResult, 6);
+	let		index = 0;
+
+	await asyncForEach(Object.entries(vaults), async ([k, v]) => {
+		if (v.CHAIN_ID !== network || v.VAULT_TYPE === 'weird') {
+			return;
+		}
+		const	[apiVersion, depositLimit, totalAssets, availableDepositLimit, pricePerShare, decimals] = chunkedCallResult[index];
+		const	dec = Number(decimals);
+		index++;
+
+		_vaults.push({
+			title: v.TITLE,
+			logo: v.LOGO,
+			displayName: `${v.LOGO} ${v.TITLE}`,
+			src: `https://ape.tax/${k}`,
+			status: v.VAULT_STATUS,
+			type: v.VAULT_TYPE,
+			address: v.VAULT_ADDR,
+			network: v.CHAIN_ID,
+			data: {
+				apiVersion: apiVersion,
+				depositLimit: ethers.utils.formatUnits(depositLimit, dec),
+				totalAssets: ethers.utils.formatUnits(totalAssets, dec),
+				availableDepositLimit: ethers.utils.formatUnits(availableDepositLimit, dec),
+				pricePerShare: ethers.utils.formatUnits(pricePerShare, dec),
+				decimals: dec,
+			},
+			want: {
+				address: v.WANT_ADDR,
+				symbol: v.WANT_SYMBOL,
+				cgID: v.COINGECKO_SYMBOL,
+			}
+		});
+	});
+	return _vaults;
+}, {maxAge: 10 * 60}); //10 mn
diff --git a/utils/fn.js b/utils/fn.js
@@ -0,0 +1,48 @@
+/******************************************************************************
+**	@Author:				The Ape Community
+**	@Twitter:				@ape_tax
+**	@Date:					Sunday September 5th 2021
+**	@Filename:				fn.js
+******************************************************************************/
+
+import memoize from 'memoizee';
+
+const formatJsonSuccess = (data) => ({
+	success: true,
+	data,
+});
+
+const formatJsonError = (err) => ({
+	success: false,
+	err: err.toString ? err.toString() : err,
+});
+
+const addGeneratedTime = async (res) => ({
+	...await res,
+	generatedTimeMs: +Date.now(),
+});
+
+const fn = (cb, options = {}) => {
+	const {
+		maxAge: maxAgeSec = null, // Caching duration, in seconds
+	} = options;
+
+	const callback = maxAgeSec !== null ?
+		memoize(async (query) => addGeneratedTime(cb(query)), {
+			promise: true,
+			maxAge: maxAgeSec * 1000,
+			normalizer: ([query]) => JSON.stringify(query), // Separate cache entries for each route & query params,
+		}) :
+		async (query) => addGeneratedTime(cb(query));
+
+	return async (req, res) => (
+		Promise.resolve(callback(req.query))
+			.then((data) => res.status(200).json(formatJsonSuccess(data)))
+			.catch((err) => res.status(500).json(formatJsonError(err)))
+	);
+};
+
+export {
+	fn,
+	formatJsonError,
+};
diff --git a/utils/yVault.abi.json b/utils/yVault.abi.json
@@ -0,0 +1 @@
+[{"name":"Transfer","inputs":[{"type":"address","name":"sender","indexed":true},{"type":"address","name":"receiver","indexed":true},{"type":"uint256","name":"value","indexed":false}],"anonymous":false,"type":"event"},{"name":"Approval","inputs":[{"type":"address","name":"owner","indexed":true},{"type":"address","name":"spender","indexed":true},{"type":"uint256","name":"value","indexed":false}],"anonymous":false,"type":"event"},{"name":"StrategyAdded","inputs":[{"type":"address","name":"strategy","indexed":true},{"type":"uint256","name":"debtLimit","indexed":false},{"type":"uint256","name":"rateLimit","indexed":false},{"type":"uint256","name":"performanceFee","indexed":false}],"anonymous":false,"type":"event"},{"name":"StrategyReported","inputs":[{"type":"address","name":"strategy","indexed":true},{"type":"uint256","name":"gain","indexed":false},{"type":"uint256","name":"loss","indexed":false},{"type":"uint256","name":"totalGain","indexed":false},{"type":"uint256","name":"totalLoss","indexed":false},{"type":"uint256","name":"totalDebt","indexed":false},{"type":"uint256","name":"debtAdded","indexed":false},{"type":"uint256","name":"debtLimit","indexed":false}],"anonymous":false,"type":"event"},{"outputs":[],"inputs":[{"type":"address","name":"_token"},{"type":"address","name":"_governance"},{"type":"address","name":"_rewards"},{"type":"string","name":"_nameOverride"},{"type":"string","name":"_symbolOverride"}],"stateMutability":"nonpayable","type":"constructor"},{"name":"apiVersion","outputs":[{"type":"string","name":""}],"inputs":[],"stateMutability":"pure","type":"function","gas":4489},{"name":"setName","outputs":[],"inputs":[{"type":"string","name":"_name"}],"stateMutability":"nonpayable","type":"function","gas":106987},{"name":"setSymbol","outputs":[],"inputs":[{"type":"string","name":"_symbol"}],"stateMutability":"nonpayable","type":"function","gas":71837},{"name":"setGovernance","outputs":[],"inputs":[{"type":"address","name":"_governance"}],"stateMutability":"nonpayable","type":"function","gas":36308},{"name":"acceptGovernance","outputs":[],"inputs":[],"stateMutability":"nonpayable","type":"function","gas":36234},{"name":"setGuestList","outputs":[],"inputs":[{"type":"address","name":"_guestList"}],"stateMutability":"nonpayable","type":"function","gas":36368},{"name":"setRewards","outputs":[],"inputs":[{"type":"address","name":"_rewards"}],"stateMutability":"nonpayable","type":"function","gas":36398},{"name":"setDepositLimit","outputs":[],"inputs":[{"type":"uint256","name":"_limit"}],"stateMutability":"nonpayable","type":"function","gas":36328},{"name":"setPerformanceFee","outputs":[],"inputs":[{"type":"uint256","name":"_fee"}],"stateMutability":"nonpayable","type":"function","gas":36358},{"name":"setManagementFee","outputs":[],"inputs":[{"type":"uint256","name":"_fee"}],"stateMutability":"nonpayable","type":"function","gas":36388},{"name":"setGuardian","outputs":[],"inputs":[{"type":"address","name":"_guardian"}],"stateMutability":"nonpayable","type":"function","gas":37745},{"name":"setEmergencyShutdown","outputs":[],"inputs":[{"type":"bool","name":"_active"}],"stateMutability":"nonpayable","type":"function","gas":37775},{"name":"setWithdrawalQueue","outputs":[],"inputs":[{"type":"address[20]","name":"_queue"}],"stateMutability":"nonpayable","type":"function","gas":750044},{"name":"transfer","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_to"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":76619},{"name":"transferFrom","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_from"},{"type":"address","name":"_to"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":116382},{"name":"approve","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_spender"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":38184},{"name":"increaseAllowance","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_spender"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":40225},{"name":"decreaseAllowance","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_spender"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":40249},{"name":"permit","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"owner"},{"type":"address","name":"spender"},{"type":"uint256","name":"amount"},{"type":"uint256","name":"expiry"},{"type":"bytes","name":"signature"}],"stateMutability":"nonpayable","type":"function","gas":81177},{"name":"totalAssets","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":4003},{"name":"balanceSheetOfStrategy","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"address","name":"_strategy"}],"stateMutability":"view","type":"function","gas":2508},{"name":"totalBalanceSheet","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"address[40]","name":"_strategies"}],"stateMutability":"view","type":"function","gas":77066},{"name":"deposit","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"nonpayable","type":"function"},{"name":"deposit","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"uint256","name":"_amount"}],"stateMutability":"nonpayable","type":"function"},{"name":"deposit","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"uint256","name":"_amount"},{"type":"address","name":"_recipient"}],"stateMutability":"nonpayable","type":"function"},{"name":"maxAvailableShares","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":359791},{"name":"withdraw","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"nonpayable","type":"function"},{"name":"withdraw","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"uint256","name":"_shares"}],"stateMutability":"nonpayable","type":"function"},{"name":"withdraw","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"uint256","name":"_shares"},{"type":"address","name":"_recipient"}],"stateMutability":"nonpayable","type":"function"},{"name":"pricePerShare","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":12352},{"name":"addStrategy","outputs":[],"inputs":[{"type":"address","name":"_strategy"},{"type":"uint256","name":"_debtLimit"},{"type":"uint256","name":"_rateLimit"},{"type":"uint256","name":"_performanceFee"}],"stateMutability":"nonpayable","type":"function","gas":1445752},{"name":"updateStrategyDebtLimit","outputs":[],"inputs":[{"type":"address","name":"_strategy"},{"type":"uint256","name":"_debtLimit"}],"stateMutability":"nonpayable","type":"function","gas":111496},{"name":"updateStrategyRateLimit","outputs":[],"inputs":[{"type":"address","name":"_strategy"},{"type":"uint256","name":"_rateLimit"}],"stateMutability":"nonpayable","type":"function","gas":38548},{"name":"updateStrategyPerformanceFee","outputs":[],"inputs":[{"type":"address","name":"_strategy"},{"type":"uint256","name":"_performanceFee"}],"stateMutability":"nonpayable","type":"function","gas":38572},{"name":"migrateStrategy","outputs":[],"inputs":[{"type":"address","name":"_oldVersion"},{"type":"address","name":"_newVersion"}],"stateMutability":"nonpayable","type":"function","gas":1178418},{"name":"revokeStrategy","outputs":[],"inputs":[],"stateMutability":"nonpayable","type":"function"},{"name":"revokeStrategy","outputs":[],"inputs":[{"type":"address","name":"_strategy"}],"stateMutability":"nonpayable","type":"function"},{"name":"addStrategyToQueue","outputs":[],"inputs":[{"type":"address","name":"_strategy"}],"stateMutability":"nonpayable","type":"function","gas":1194595},{"name":"removeStrategyFromQueue","outputs":[],"inputs":[{"type":"address","name":"_strategy"}],"stateMutability":"nonpayable","type":"function","gas":23068248},{"name":"debtOutstanding","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function"},{"name":"debtOutstanding","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"address","name":"_strategy"}],"stateMutability":"view","type":"function"},{"name":"creditAvailable","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function"},{"name":"creditAvailable","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"address","name":"_strategy"}],"stateMutability":"view","type":"function"},{"name":"availableDepositLimit","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":9688},{"name":"expectedReturn","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function"},{"name":"expectedReturn","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"address","name":"_strategy"}],"stateMutability":"view","type":"function"},{"name":"report","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"uint256","name":"_gain"},{"type":"uint256","name":"_loss"},{"type":"uint256","name":"_debtPayment"}],"stateMutability":"nonpayable","type":"function","gas":919553},{"name":"sweep","outputs":[],"inputs":[{"type":"address","name":"_token"}],"stateMutability":"nonpayable","type":"function"},{"name":"sweep","outputs":[],"inputs":[{"type":"address","name":"_token"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function"},{"name":"name","outputs":[{"type":"string","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":9053},{"name":"symbol","outputs":[{"type":"string","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":8106},{"name":"decimals","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":2711},{"name":"balanceOf","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"address","name":"arg0"}],"stateMutability":"view","type":"function","gas":2956},{"name":"allowance","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"address","name":"arg0"},{"type":"address","name":"arg1"}],"stateMutability":"view","type":"function","gas":3201},{"name":"totalSupply","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":2801},{"name":"token","outputs":[{"type":"address","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":2831},{"name":"governance","outputs":[{"type":"address","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":2861},{"name":"guardian","outputs":[{"type":"address","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":2891},{"name":"guestList","outputs":[{"type":"address","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":2921},{"name":"strategies","outputs":[{"type":"uint256","name":"performanceFee"},{"type":"uint256","name":"activation"},{"type":"uint256","name":"debtLimit"},{"type":"uint256","name":"rateLimit"},{"type":"uint256","name":"lastReport"},{"type":"uint256","name":"totalDebt"},{"type":"uint256","name":"totalGain"},{"type":"uint256","name":"totalLoss"}],"inputs":[{"type":"address","name":"arg0"}],"stateMutability":"view","type":"function","gas":10292},{"name":"withdrawalQueue","outputs":[{"type":"address","name":""}],"inputs":[{"type":"uint256","name":"arg0"}],"stateMutability":"view","type":"function","gas":3090},{"name":"emergencyShutdown","outputs":[{"type":"bool","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":3011},{"name":"depositLimit","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":3041},{"name":"debtLimit","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":3071},{"name":"totalDebt","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":3101},{"name":"lastReport","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":3131},{"name":"activation","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":3161},{"name":"rewards","outputs":[{"type":"address","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":3191},{"name":"managementFee","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":3221},{"name":"performanceFee","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":3251},{"name":"nonces","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"address","name":"arg0"}],"stateMutability":"view","type":"function","gas":3496},{"name":"DOMAIN_SEPARATOR","outputs":[{"type":"bytes32","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":3311}]