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1import FungibleToken from 0xf233dcee88fe0abe
2import FlowToken from 0x1654653399040a61
3import EVM from 0xe467b9dd11fa00df
4
5/// Transfers $FLOW from the signer's account Cadence Flow balance to the recipient's hex-encoded EVM address.
6/// Note that a COA must have a $FLOW balance in EVM before transferring value to another EVM address.
7///
8transaction(toEVMAddressHex: String, amount: UFix64, data: [UInt8], gasLimit: UInt64) {
9
10    let coa: auth(EVM.Withdraw, EVM.Call) &EVM.CadenceOwnedAccount
11    let recipientEVMAddress: EVM.EVMAddress
12
13    prepare(signer: auth(BorrowValue, SaveValue) &Account) {
14        if signer.storage.type(at: /storage/evm) == nil {
15            signer.storage.save(<-EVM.createCadenceOwnedAccount(), to: /storage/evm)
16        }
17        self.coa = signer.storage.borrow<auth(EVM.Withdraw, EVM.Call) &EVM.CadenceOwnedAccount>(from: /storage/evm)
18            ?? panic("Could not borrow reference to the signer's bridged account")
19
20        self.recipientEVMAddress = EVM.addressFromString(toEVMAddressHex)
21    }
22
23    execute {
24        if self.recipientEVMAddress.bytes == self.coa.address().bytes {
25            return
26        }
27        let valueBalance = EVM.Balance(attoflow: 0)
28        valueBalance.setFLOW(flow: amount)
29        let txResult = self.coa.call(
30            to: self.recipientEVMAddress,
31            data: data,
32            gasLimit: gasLimit,
33            value: valueBalance
34        )
35        assert(
36            txResult.status == EVM.Status.failed || txResult.status == EVM.Status.successful,
37            message: "evm_error=".concat(txResult.errorMessage)
38        )
39    }
40}