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compiling and sending ehter to a payable function from nodejs
import ethers, {
Contract,
providers as Providers,
utils as Utils,
Wallet,
ContractFactory
} from "ethers"
import path from "path"
import fs from "fs"
import solc from "solc"
const privateKey = "0x123123123"
export const setupContract = async () => {
// Connect to the network
const url = "http://localhost:8545"
const provider = new Providers.JsonRpcProvider(url)
const wallet = new Wallet(privateKey, provider)
console.log("wallet address ", wallet.address)
const input = {
"openzeppelin-solidity/contracts/access/Roles.sol": fs.readFileSync(
path.resolve(
__dirname,
"..",
"..",
"blockchain",
"node_modules",
"openzeppelin-solidity",
"contracts",
"access",
"Roles.sol"
),
"UTF-8"
),
"User.sol": fs.readFileSync(
path.resolve(
__dirname,
"..",
"..",
"blockchain",
"contracts",
"User.sol"
),
"UTF-8"
),
"SimpleAuth.sol": fs.readFileSync(
path.resolve(
__dirname,
"..",
"..",
"blockchain",
"contracts",
"SimpleAuth.sol"
),
"UTF-8"
)
}
const output = solc.compile({ sources: input }, 1)
console.log("output ", output)
const bytecode = output.contracts["SimpleAuth.sol:SimpleAuth"].bytecode
const abi = JSON.parse(
output.contracts["SimpleAuth.sol:SimpleAuth"].interface
)
console.log("abi: ", JSON.stringify(abi))
const factory = new ContractFactory(abi, bytecode, wallet)
const wei = Utils.parseEther("0.1")
// const gasEstimate = web3.eth.estimateGas({data: bytecode});
//needs to be deployed as the owner (private key for wallet)
const deployedContract = await factory.deploy(wei)
console.log(
"contract transaction hash" + deployedContract.deployTransaction.hash
)
// The contract is NOT deployed yet; we must wait until it is mined
await deployedContract.deployed()
console.log("contract fully deployed")
console.log("contract address" + deployedContract.address)
return {
address: deployedContract.address,
abi
}
}
export const web3UseContract = async (address, abi) => {
const wei = Utils.parseEther("0.1")
const url = "http://localhost:8545"
myContractInstance.depositFunds(
{ from: web3.eth.accounts[0], gas: 3000000, value: 100 },
function(err, res) {}
)
}
export const useContract = async (address, abi) => {
const wei = Utils.parseEther("0.1")
const url = "http://localhost:8545"
const provider = new Providers.JsonRpcProvider(url)
// Load the wallet to deploy the contract with
const wallet = new Wallet(privateKey, provider)
var contract = new Contract(
address,
abi,
wallet
)
const price = await contract.retrievePrice()
console.log("price " + price) //logs the price set in the constructor when the contract was made (WORKS)
const testAddress = await contract.isUser(
"0xabcabc"
)
console.log("testAddress ", testAddress) //checks if the given address is a user on the contract (WORKS)
const gasPrice = await provider.getGasPrice()
console.log("gas price: ", gasPrice.toString()) //returns the price of gas from the network (WORKS)
try {
console.log("about to send transaction")
const addToUsers = await contract.requestAccess({
//call function to request access, from the current wallet (REVERTS)
value: wei
})
console.log("result of sending transaction ", addToUsers)
} catch (error) {
console.log("error.... ", error) //fires as the contract reverted the payment
}
}
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