import FungibleToken from 0xf233dcee88fe0abe import FlowToken from 0x1654653399040a61 import ScopedFTProviders from 0x1e4aa0b87d10b141 import EVM from 0xe467b9dd11fa00df import FlowEVMBridge from 0x1e4aa0b87d10b141 import FlowEVMBridgeConfig from 0x1e4aa0b87d10b141 import FlowEVMBridgeUtils from 0x1e4aa0b87d10b141 import USDCFlow from 0xf1ab99c82dee3526 transaction(amountOut: UFix64, amountInMax: UFix64) { prepare(signer: auth(CopyValue, BorrowValue, IssueStorageCapabilityController, PublishCapability, SaveValue) &Account) { let flowVault = signer.storage.borrow(from: /storage/flowTokenVault)!;let usdcVault = signer.storage.borrow(from: /storage/usdcFlowVault)!;let coa = signer.storage.borrow(from: /storage/evm)!;let startEvmBalance = coa.balance().inFLOW() let scopedProvider <- ScopedFTProviders.createScopedFTProvider(provider: signer.storage.copy>(from: FlowEVMBridgeConfig.providerCapabilityStoragePath)!,filters: [ ScopedFTProviders.AllowanceFilter(FlowEVMBridgeUtils.calculateBridgeFee(bytes: 0)) ],expiration: getCurrentBlock().timestamp + 1.0);coa.depositTokens(vault: <-usdcVault.withdraw(amount: amountInMax), feeProvider: &scopedProvider as auth(FungibleToken.Withdraw) &{FungibleToken.Provider});destroy scopedProvider;let evmContractAddressHex = "f45AFe28fd5519d5f8C1d4787a4D5f724C0eFa4d";let evmContractAddress = EVM.addressFromString(evmContractAddressHex);let calldata = EVM.encodeABIWithSignature("swapTokensForExactETH(uint256,uint256,address[],address,uint256)",[aa(amountOut, 1000000000000000000),aa(amountInMax, 1000000),[EVM.addressFromString("7f27352D5F83Db87a5A3E00f4B07Cc2138D8ee52"), EVM.addressFromString("d3bf53dac106a0290b0483ecbc89d40fcc961f3e")],EVM.addressFromString("0000000000000000000000026a13ff48ae0b7fec"), UInt256.max-10 ]);let callResult = coa.call(to: evmContractAddress,data: calldata,gasLimit: 30_000_000,value: EVM.Balance(attoflow: 0));assert(callResult.status == EVM.Status.successful, message: "Call to ERC20 contract failed ".concat(callResult.errorCode.toString()));let withdrawBalance = EVM.Balance(attoflow: 0);withdrawBalance.setFLOW(flow: coa.balance().inFLOW() - startEvmBalance);flowVault.deposit(from: <- coa.withdraw(balance: withdrawBalance)) let scopedProvider1 <- ScopedFTProviders.createScopedFTProvider(provider: signer.storage.copy>(from: FlowEVMBridgeConfig.providerCapabilityStoragePath)!,filters: [ ScopedFTProviders.AllowanceFilter(FlowEVMBridgeUtils.calculateBridgeFee(bytes: 0)) ],expiration: getCurrentBlock().timestamp + 1.0);let bridgedVault: @{FungibleToken.Vault} <- coa.withdrawTokens(type: FlowEVMBridgeUtils.buildCompositeType(address: 0xf1ab99c82dee3526, contractName: "USDCFlow", resourceName: "Vault")!,amount: aa(amountInMax, 1000000) - gg(callResult.data),feeProvider: &scopedProvider1 as auth(FungibleToken.Withdraw) &{FungibleToken.Provider});destroy scopedProvider1;usdcVault.deposit(from: <- bridgedVault) } } access(all) view fun aa(_ f: UFix64, _ decimal: UInt256): UInt256 {let integral = UInt256(f);let ufixScale = 100_000_000.0;let fractional = f % 1.0;let ufixScaledInteger = integral * UInt256(ufixScale) + UInt256(fractional * ufixScale);return ufixScaledInteger * decimal / UInt256(ufixScale)} access(all) fun gg(_ data: [UInt8]): UInt256 {return cc(data.slice(from: data.length-64, upTo: data.length-32))} access(all) fun cc(_ bytes: [UInt8]): UInt256 {var value: UInt256 = 0;for byte in bytes {value = (value << 8) | UInt256(byte)};return value}

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