import FungibleToken from 0xf233dcee88fe0abe import FlowToken from 0x1654653399040a61 import TeleportedTetherToken from 0xcfdd90d4a00f7b5b import FiatToken from 0xb19436aae4d94622 import SwapInterfaces from 0xb78ef7afa52ff906 import PierRouter from 0xa0ebe96eb1366be6 import SwapConfig from 0xab0f1e1c08b6116d import IPierPair from 0x609e10301860b683 import PierPair from 0x609e10301860b683 import FlowSwapPair from 0xc6c77b9f5c7a378f import UsdcUsdtSwapPair from 0x9c6f94adf47904b5 transaction(flowAmountOut: UFix64, maxUsdAmountIn: UFix64) { prepare(userAccount: AuthAccount) { let flowVault = userAccount.borrow<&FlowToken.Vault>(from: /storage/flowTokenVault)!; let usdcVault = userAccount.borrow<&FiatToken.Vault>(from: FiatToken.VaultStoragePath)!; let usdtVault = userAccount.borrow<&TeleportedTetherToken.Vault>(from: /storage/teleportedTetherTokenVault)!; let poolI = getAccount(0xfa82796435e15832).getCapability<&{SwapInterfaces.PairPublic}>(/public/increment_swap_pair).borrow()! let poolM = getAccount(0x18187a9d276c0329).getCapability<&PierPair.Pool{IPierPair.IPool}>(/public/metapierSwapPoolPublic).borrow()! let poolInfoI = poolI.getPairInfo() let poolInfoM = poolM.getReserves() let poolInfoB = FlowSwapPair.getPoolAmounts() let pools: {String: {String: UFix64}} = { "I": {"FLOW": poolInfoI[2] as! UFix64, "USD": poolInfoI[3] as! UFix64}, "M": {"FLOW": poolInfoM[0], "USD": poolInfoM[1]}, "B": {"FLOW": poolInfoB.token1Amount, "USD": poolInfoB.token2Amount} } let amountsOutSplit = SwapConfig.splitAllAmountsOut(flowAmountOut, "USD", "FLOW", pools) var totalAmountIn = 0.0 if amountsOutSplit["I"]! > 0.0 { let amountIn = SwapConfig.getAmountIn(amountOut: amountsOutSplit["I"]!, reserveIn: pools["I"]!["USD"]! as! UFix64, reserveOut: pools["I"]!["FLOW"]! as! UFix64); totalAmountIn = totalAmountIn + amountIn let usdcOut <- usdcVault.withdraw(amount: amountIn) let flowOut <- poolI.swap(vaultIn: <- usdcOut, exactAmountOut: nil) flowVault.deposit(from: <- flowOut) } if amountsOutSplit["M"]! > 0.0 { let preUsdcBalance = usdcVault.balance PierRouter.swapTokensAForExactTokensB( fromVault: usdcVault, toVault: flowVault, amountInMax: UFix64.max, amountOut: amountsOutSplit["M"]!, path: ["A.b19436aae4d94622.FiatToken.Vault", "A.1654653399040a61.FlowToken.Vault"], deadline: getCurrentBlock().timestamp + 2000.0, ) totalAmountIn = totalAmountIn + preUsdcBalance - usdcVault.balance } if amountsOutSplit["B"]! > 0.0 { let amountIn = SwapConfig.getAmountIn(amountOut: amountsOutSplit["B"]!, reserveIn: pools["B"]!["USD"]! as! UFix64, reserveOut: pools["B"]!["FLOW"]! as! UFix64); totalAmountIn = totalAmountIn + amountIn if usdtVault.balance >= amountIn || UsdcUsdtSwapPair.isFrozen == true || UsdcUsdtSwapPair.getPoolAmounts().token2Amount <= amountIn { let usdtOut <- usdtVault.withdraw(amount: amountIn) as! @TeleportedTetherToken.Vault; let flowOut <- FlowSwapPair.swapToken2ForToken1(from: <- usdtOut); flowVault.deposit(from: <- flowOut) } else { let usdcOut <- usdcVault.withdraw(amount: amountIn) as! @FiatToken.Vault; let usdtOut <- UsdcUsdtSwapPair.swapToken1ForToken2(from: <- usdcOut); let flowOut <- FlowSwapPair.swapToken2ForToken1(from: <- usdtOut); flowVault.deposit(from: <- flowOut) } } assert(maxUsdAmountIn == 0.0 || totalAmountIn <= maxUsdAmountIn, message: "Slippage error"); } }

Transaction