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* feat: veyfi apr * fix: adjust from * fix: APR --------- Co-authored-by: Majorfi <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,137 @@ | ||
| import {useMemo, useState} from 'react'; | ||
| import {useContractRead} from 'wagmi'; | ||
| import {VEYFI_ABI} from '@veYFI/utils/abi/veYFI.abi'; | ||
| import {VEYFI_GAUGE_ABI} from '@veYFI/utils/abi/veYFIGauge.abi'; | ||
| import {SECONDS_PER_YEAR, VE_YFI_GAUGES, VEYFI_CHAIN_ID} from '@veYFI/utils/constants'; | ||
| import {readContracts} from '@wagmi/core'; | ||
| import {toAddress} from '@yearn-finance/web-lib/utils/address'; | ||
| import {VEYFI_ADDRESS, YFI_ADDRESS} from '@yearn-finance/web-lib/utils/constants'; | ||
| import {decodeAsBigInt} from '@yearn-finance/web-lib/utils/decoder'; | ||
| import {toBigInt, toNormalizedBN} from '@yearn-finance/web-lib/utils/format.bigNumber'; | ||
| import {getClient} from '@yearn-finance/web-lib/utils/wagmi/utils'; | ||
| import {useAsyncTrigger} from '@common/hooks/useAsyncEffect'; | ||
| import {useTokenPrice} from '@common/hooks/useTokenPrice'; | ||
|
|
||
| import type {TAddress} from '@yearn-finance/web-lib/types'; | ||
| import type {TNormalizedBN} from '@common/types/types'; | ||
|
|
||
| type TUseVeYFIAPR = { | ||
| dYFIPrice: number; | ||
| }; | ||
| function useVeYFIAPR({dYFIPrice}: TUseVeYFIAPR): number { | ||
| const [rate, set_rate] = useState<bigint>(0n); | ||
| const yfiPrice = useTokenPrice(YFI_ADDRESS); | ||
| const {data: veYFISupply} = useContractRead({ | ||
| address: VEYFI_ADDRESS, | ||
| abi: VEYFI_ABI, | ||
| functionName: 'totalSupply', | ||
| chainId: VEYFI_CHAIN_ID | ||
| }); | ||
|
|
||
| useAsyncTrigger(async (): Promise<void> => { | ||
| const publicClient = getClient(VEYFI_CHAIN_ID); | ||
| const rangeLimit = toBigInt(process.env.RANGE_LIMIT); | ||
| const currentBlockNumber = await publicClient.getBlockNumber(); | ||
| const from = 18373500n; | ||
|
|
||
| const depositors: [{address: TAddress; gauge: TAddress; balance: TNormalizedBN}] = [] as any; | ||
| /* 🔵 - Yearn Finance ********************************************************************** | ||
| ** First we need to retrieve all the depositors in a gauge | ||
| ******************************************************************************************/ | ||
| for (let i = from; i < currentBlockNumber; i += rangeLimit) { | ||
| const logs = await publicClient.getLogs({ | ||
| address: VE_YFI_GAUGES, | ||
| events: [ | ||
| { | ||
| anonymous: false, | ||
| inputs: [ | ||
| {indexed: true, internalType: 'address', name: 'caller', type: 'address'}, | ||
| {indexed: true, internalType: 'address', name: 'owner', type: 'address'}, | ||
| {indexed: false, internalType: 'uint256', name: 'assets', type: 'uint256'}, | ||
| {indexed: false, internalType: 'uint256', name: 'shares', type: 'uint256'} | ||
| ], | ||
| name: 'Deposit', | ||
| type: 'event' | ||
| } | ||
| ], | ||
| fromBlock: i, | ||
| toBlock: i + rangeLimit | ||
| }); | ||
| for (const log of logs) { | ||
| depositors.push({address: toAddress(log.args.owner), gauge: log.address, balance: toNormalizedBN(0)}); | ||
| } | ||
| } | ||
|
|
||
| /* 🔵 - Yearn Finance ********************************************************************** | ||
| ** Then, for each one of theses depositors, we need to check the current boostedBalance. | ||
| ******************************************************************************************/ | ||
| const allDepositorsBalances = await readContracts({ | ||
| contracts: depositors.map(({gauge, address}): any => ({ | ||
| address: gauge, | ||
| abi: VEYFI_GAUGE_ABI, | ||
| chainId: VEYFI_CHAIN_ID, | ||
| functionName: 'boostedBalanceOf', | ||
| args: [address] | ||
| })) | ||
| }); | ||
| for (let i = 0; i < depositors.length; i++) { | ||
| depositors[i].balance = toNormalizedBN(decodeAsBigInt(allDepositorsBalances[i]), 18); | ||
| } | ||
|
|
||
| // Remove duplicates (on address and gauge) | ||
| const seen = new Set(); | ||
| const depositorsWithoutDuplicates = depositors.filter((depositor): boolean => { | ||
| const isDuplicate = seen.has(depositor.address + depositor.gauge); | ||
| seen.add(depositor.address + depositor.gauge); | ||
| return !isDuplicate; | ||
| }); | ||
|
|
||
| // remove depositors with 0 balance | ||
| const depositorsWithBalance = depositorsWithoutDuplicates.filter( | ||
| (depositor): boolean => depositor.balance.raw > 0n | ||
| ); | ||
|
|
||
| /* 🔵 - Yearn Finance ********************************************************************** | ||
| ** Then, for each gauge we need to know the totalSupply and the rewardRate | ||
| ******************************************************************************************/ | ||
| const calls = []; | ||
| for (const gauge of VE_YFI_GAUGES) { | ||
| calls.push({address: gauge, abi: VEYFI_GAUGE_ABI, chainId: VEYFI_CHAIN_ID, functionName: 'totalSupply'}); | ||
| calls.push({address: gauge, abi: VEYFI_GAUGE_ABI, chainId: VEYFI_CHAIN_ID, functionName: 'rewardRate'}); | ||
| } | ||
| const totalSupplyAndRewardRate = await readContracts({ | ||
| contracts: calls | ||
| }); | ||
|
|
||
| /* 🔵 - Yearn Finance ********************************************************************** | ||
| ** Then we can calculate the rate for each gauge | ||
| ******************************************************************************************/ | ||
| let rate = 0n; | ||
| let index = 0; | ||
| for (const gauge of VE_YFI_GAUGES) { | ||
| const supply = decodeAsBigInt(totalSupplyAndRewardRate[index++]); | ||
| const rewardRate = decodeAsBigInt(totalSupplyAndRewardRate[index++]); | ||
| let boosted = 0n; | ||
| for (const depositor of depositorsWithBalance) { | ||
| if (toAddress(depositor.gauge) === toAddress(gauge)) { | ||
| boosted += depositor.balance.raw; | ||
| } | ||
| } | ||
| rate += (rewardRate * (supply - boosted)) / supply; | ||
| } | ||
| set_rate(rate); | ||
| }, []); | ||
|
|
||
| const APR = useMemo((): number => { | ||
| return ( | ||
| (Number(toNormalizedBN(rate).normalized) * SECONDS_PER_YEAR * dYFIPrice) / | ||
| Number(toNormalizedBN(toBigInt(veYFISupply)).normalized) / | ||
| yfiPrice | ||
| ); | ||
| }, [rate, dYFIPrice, yfiPrice, veYFISupply]); | ||
| console.warn(APR); | ||
|
|
||
| return APR; | ||
| } | ||
|
|
||
| export {useVeYFIAPR}; |
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Successfully deployed to the following URLs:
yearnfi – ./
beta.yearn.farm
ydraft.vercel.app
ybribe.com
y.finance
www.yearn.fi
yearn.fi
vote.yearn.finance
www.y.finance
yearn.finance
www.ybribe.com
yearnfi-git-main.yearn.farm
yearnfi.yearn.farm