feat: add bsc bunny platform

Author: Coac

src/providers/BSCDeFi.js

@@ -1,6 +1,7 @@
 const Web3 = require('web3')
 
 const AutoFarmChef = require('./bsc/AutoFarmChef')
+const BunnyChef = require('./bsc/BunnyChef')
 const BVaultChef = require('./bsc/BVaultChef')
 const MidasGoldChef = require('./bsc/MidasGoldChef')
 const PancakeSwapChef = require('./bsc/PancakeSwapChef')
@@ -26,6 +27,7 @@ class BSCDeFi extends AbstractExplorer {
       alpaca: new PancakeSwapCloneChef(web3, '0xA625AB01B08ce023B2a342Dbb12a16f2C8489A8F', 'pendingAlpaca', 'ALPACA'),
       apeSwap: new PancakeSwapCloneChef(web3, '0x5c8D727b265DBAfaba67E050f2f739cAeEB4A6F9', 'pendingCake', 'BANANA'),
       autoFarm: new AutoFarmChef(web3),
+      bunny: new BunnyChef(web3),
       bVault: new BVaultChef(web3),
       cafeSwap: new PancakeSwapCloneChef(web3, '0xc772955c33088a97D56d0BBf473d05267bC4feBB', 'pendingCake', 'BREW'),
       coralFarm: new PancakeSwapCloneChef(web3, '0x713e34640ef300a0B178a9688458BbA8b1FA35A7', 'pendingCrl', 'CRL'),

src/providers/bsc/BunnyChef.js

@@ -0,0 +1,134 @@
+const Web3 = require('web3')
+
+const MasterChef = require('./MasterChef')
+const Token = require('./Token')
+const LiquidityPool = require('./LiquidityPool')
+
+// PancakeSwap
+const bunnyVaultABI = require('../resources/abis/bunny.json')
+
+class BunnyChef extends MasterChef {
+  constructor (web3) {
+    super(web3, bunnyVaultABI)
+
+    this.vaults = [
+      // https://github.com/PancakeBunny-finance/Bunny#cake-maximizer---deposit-flip-earn-cake
+      '0xEDfcB78e73f7bA6aD2D829bf5D462a0924da28eD',
+      '0x3f139386406b0924eF115BAFF71D0d30CC090Bd5',
+      '0xCBd4472cbeB7229278F841b2a81F1c0DF1AD0058',
+      '0x41dF17D1De8D4E43d5493eb96e01100908FCcc4f',
+      '0x92a0f75a0f07C90a7EcB65eDD549Fa6a45a4975C',
+      '0xE07BdaAc4573a00208D148bD5b3e5d2Ae4Ebd0Cc',
+      '0xa5B8cdd3787832AdEdFe5a04bF4A307051538FF2',
+      '0x866FD0028eb7fc7eeD02deF330B05aB503e199d4',
+      // https://github.com/PancakeBunny-finance/Bunny#auto-compounding-flip---deposit-flip-earn-flip
+      '0x7eaaEaF2aB59C2c85a17BEB15B110F81b192e98a',
+      '0x0137d886e832842a3B11c568d5992Ae73f7A792e',
+      '0xE02BCFa3D0072AD2F52eD917a7b125e257c26032',
+      '0x1b6e3d394f1D809769407DEA84711cF57e507B99',
+      '0xC1aAE51746bEA1a1Ec6f17A4f75b422F8a656ee6',
+      '0xa59EFEf41040e258191a4096DC202583765a43E7',
+      '0xC0314BbE19D4D5b048D3A3B974f0cA1B2cEE5eF3'
+    ]
+  }
+
+  async listStakedPools (walletAddress, tx) {
+    let pools = []
+    for (let poolID = 0; poolID < this.vaults.length; poolID++) {
+      pools.push(this.stakedPool(poolID, walletAddress, tx))
+    }
+
+    pools = await Promise.all(pools)
+
+    return pools.filter(pool => pool)
+  }
+
+  lpTransactions (walletTx, lpAddress) {
+    const chefTx = walletTx.filter(t => t.to.toUpperCase() === lpAddress.toUpperCase())
+
+    let lastWithdrawAllTime = 0
+
+    return chefTx.map(t => {
+      const decoded = this.decoder.decodeData(t.input)
+
+      if (decoded.method === 'withdrawAll') {
+        lastWithdrawAllTime = lastWithdrawAllTime === 0 ? parseInt(t.timeStamp) : lastWithdrawAllTime
+        return null
+      }
+
+      if (decoded.method !== 'deposit' && decoded.method !== 'withdraw') {
+        return null
+      }
+
+      let lpTokenTx = parseFloat(Web3.utils.fromWei(decoded.inputs[0].toString(10)))
+      if (decoded.method === 'withdraw') {
+        lpTokenTx *= -1
+      }
+
+      return {
+        type: decoded.method,
+        hash: t.hash,
+        amount: lpTokenTx,
+        timestamp: t.timeStamp
+      }
+    }).filter(t => t !== null)
+      .filter(t => parseInt(t.timestamp) > lastWithdrawAllTime)
+  }
+
+  async stakedPool (poolID, walletAddress, tx) {
+    const lpAddress = this.vaults[poolID]
+    const vault = new BunnyVault(this.web3, lpAddress)
+    await vault.init()
+    const lpTokenAmount = await vault.balanceOf(walletAddress)
+
+    if (lpTokenAmount === 0) {
+      return
+    }
+
+    const tokens = await vault.stakedTokenEquivalent(lpTokenAmount)
+    const lpTransactions = this.lpTransactions(tx, lpAddress)
+    const totalDeposited = MasterChef.totalDeposited(lpTransactions)
+
+    const rewardPerYear = 0
+    const pendingReward = 0
+
+    return {
+      poolID, lpTokenAmount, totalDeposited, pendingReward, tokens, rewardPerYear, lpAddress, lpTransactions
+    }
+  }
+}
+
+class BunnyVault {
+  constructor (web3, address) {
+    this.web3 = web3
+    this.contract = new web3.eth.Contract(bunnyVaultABI, address)
+  }
+
+  async init () {
+    const lpAddress = await this.contract.methods.stakingToken().call()
+    const isLP = await LiquidityPool.isLP(this.web3, lpAddress)
+    const Pool = isLP ? LiquidityPool : Token
+    const pool = new Pool(this.web3, lpAddress)
+    await pool.init()
+    this.pool = pool
+  }
+
+  async profit (walletAddress) {
+    const rewardTokenAddress = await this.contract.methods.rewardsToken().call()
+    const rewardToken = new Token(this.web3, rewardTokenAddress)
+    await rewardToken.init()
+    const result = {}
+    result[rewardToken.symbol] = parseFloat(Web3.utils.fromWei(await this.contract.methods.earned(walletAddress).call()))
+    return result
+  }
+
+  async balanceOf (walletAddress) {
+    return parseFloat(Web3.utils.fromWei(await this.contract.methods.balanceOf(walletAddress).call()))
+  }
+
+  async stakedTokenEquivalent (lpTokenAmount) {
+    return this.pool.stakedTokenEquivalent(lpTokenAmount)
+  }
+}
+
+module.exports = BunnyChef

src/providers/resources/abis/bunny.json

@@ -0,0 +1 @@
+[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Deposited","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"profit","type":"uint256"}],"name":"Harvested","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bool","name":"isPaused","type":"bool"}],"name":"PauseChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"profit","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"performanceFee","type":"uint256"}],"name":"ProfitPaid","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Recovered","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_address","type":"address"},{"indexed":false,"internalType":"bool","name":"whitelist","type":"bool"}],"name":"Whitelisted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"withdrawalFee","type":"uint256"}],"name":"Withdrawn","type":"event"},{"inputs":[],"name":"balance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"deposit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"depositAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"depositedAt","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"earned","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getReward","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"harvest","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_address","type":"address"}],"name":"isWhitelist","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"keeper","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lastPauseTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"minter","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pid","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"poolType","outputs":[{"internalType":"enum PoolConstant.PoolTypes","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"priceShare","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"principalOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"recoverToken","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"rewardsToken","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_keeper","type":"address"}],"name":"setKeeper","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IBunnyMinter","name":"newMinter","type":"address"}],"name":"setMinter","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"_paused","type":"bool"}],"name":"setPaused","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_address","type":"address"},{"internalType":"bool","name":"_on","type":"bool"}],"name":"setWhitelist","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"sharesOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"stakingToken","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalShares","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"shares","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdrawAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"withdrawableBalanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"}]