ethereum-wallet

ethereum wallet package for creating and generating wallet, transferring ETH, getting wallet balance and crawling blocks to find wallet transactions

Installation

go get github.com/ranjbar-dev/ethereum-wallet@v1.0.6

Test

test for Crawler, EthereumWallet and Token located at /test

go test ./test

Nodes

using infura nodes in this repository register at infura and get your http and ws node on mainnet, goerli or sepolia network and set it here

node := ethereumWallet.Node{
		Http: "https://goerli.infura.io/v3/89aae5ec52f9450ebe4fc58cbb8138fd",
		Ws:   "wss://goerli.infura.io/ws/v3/89aae5ec52f9450ebe4fc58cbb8138fd",
}

Wallet methods

• generating ethereum wallet

w := GenerateEthereumWallet(node)
w.Address // strnig 
w.PrivateKey // strnig 
w.PublicKey // strnig 

• creating ethereum wallet from private key

w := CreateEthereumWallet(node,privateKeyHex)
w.Address // strnig 
w.PrivateKey // strnig 
w.PublicKey // strnig 

• getting wallet ETH balance

balanceInWei,err := w.Balance()
balanceInWei // int64 

• getting wallet ERC20 balance

balanceInTokenSubAmount,err := w.BalanceERC20(token)
balanceInTokenSubAmount // int64 

• crawl blocks for addresses transactions

c := &Crawler{
		Node: node, 
		Addresses: []string{
			"0x5A2187B6d76a09F649CDC5d69F182697cFBA126B", // list of your addresses
		},
	}
	
res, err := c.ScanBlocks(40) // scan latest 40 block on block chain and extract addressess transactions 

Example 
// *
{
    {
        "address": "TY3PJu3VY8xVUc5BjYwJtyRgP7TfivV666",
        "tranasctions": {
            {
                "tx_id": "0xa1d76647e2c9ff4ceeda382137e7af9bb2879fce96cfc743d7138a8d54e532db",
                "from_address": "0x5a2187b6d76a09f649cdc5d69f182697cfba126b",
                "to_address": "0x75c07e7207bb00cf60c77f2506d7ce2b8d18bf0f",
                "amount": "21000000000",
                "confirmations": 2,
            }
        }
    },
    ...
}
* // 
	

Estimate transfer eth fee

feeInWei,err := w.EstimateTransferFee("tb1q0r23g66m9rhhak8aahsg53wfp5egt2huuc4tnu")
feeInWei // int64

Estimate transfer erc20 fee

feeInWei,err := w.EstimateTransferERC20Fee(token)
feeInWei // int64

• transfer ETH from wallet

txId, err := w.Transfer(toAddressHex, amount)
txId // string 

• transfer ERC20 from wallet

txId, err := w.TransferERC20(token, toAddressHex, amount)
txId // string 

Token methods

• declaring token

token := &ethereumWallet.Token{
    ContractAddress: enums.GOERLI_USDC
}

• Getting token name

token.GetName(w.Node, w.AddressHex) // return string,error

• Getting token symbol

token.GetSymbol(w.Node, w.AddressHex) // return string,error

• Getting token decimals

token.GetDecimals(w.Node, w.AddressHex) // return int64,error

I simplified this repository github.com/ethereum/go-ethereum to create this package
You can check go it for better examples and functionalities

Supported contracts

check enums/contracts file alternatively you can create your own contract

contractAddress := enums.CreateContractAddress("0x509Ee0d083DdF8AC028f2a56731412edD63223B9")

ETH goerli Faucet

check this link https://goerlifaucet.com

USDC goerli Faucet

check this link https://usdcfaucet.com/

Important

I simplified this repository github.com/ethereum/go-ethereum repository to create this package You can check go it for better examples and functionalities and do not use this package in production, I created this package for education purposes.

Donation

Address 0xe342C7ff6a91dF208Fb4bE6Eca02e19D624188C1