compile-deploy.js

const Web3 = require('../ethereum/node_modules/web3/index.js')
const web3 = new Web3()
const config = require('../ethereum/config')
web3.setProvider(new web3.providers.HttpProvider(config.provider.dev))
const contractFile = "contract.sol"
const fs = require('fs')
const exec = require('child_process').execSync
console.log("compiling",contractFile)
exec(`solc --bin --abi --optimize --overwrite -o bin contract.sol`)
/*pay attention to file names here!*/
var abi = fs.readFileSync("bin/BucJSToken.abi")
var compiled = "0x" + fs.readFileSync("bin/BucJSToken.bin")
console.log("we should now have in 'bin' the abi and the compiled contract")
var contract = web3.eth.contract(JSON.parse(abi))

/*
This is an account on the node that accepts RPC requests. web3.personal is usually _not_ enabled
Also, it's a bad practice to leave 'personal' accesible via RPC, not to mention that there's no password on the account
*/
var deployer = web3.personal.listAccounts[0]
console.log("deploying from", deployer)
web3.personal.unlockAccount(deployer,"")


//let's see how much gas it will take to deploy the contract
var cData = contract.new.getData(1000000,"BucharestJS TestToken",0,"BJSTT",{data:compiled})
var gasLimit = web3.eth.estimateGas({data: cData})
console.log("it's about",gasLimit,"gas")

var tx = {
    gas: gasLimit+10,
    from: deployer,
    data: compiled
}
/*
The contract constructor has 4 defined parameters
uint256 initialSupply,
string tokenName,
uint8 decimalUnits,
string tokenSymbol
so we need to supply 4 params to the contract.new call below

Note that callback triggers twice, once on send, once when the contract deployed is mined. 
When sent there's no address allocated yet
*/
contract.new(1000000,"BucharestJS TestToken",0,"BJSTT", tx ,(e, c) => {
    if(e) {
        console.log("Error!",e)
        return
    }       
    if(c.address == null) {
        console.log("Contract sent in transaction", c.transactionHash)
    } else {
        console.log("Contract mined with address" ,c.address , ", transactionHash was" , c.transactionHash)
        fs.writeFileSync("contract.json",JSON.stringify({contract:c.address,transaction:c.transactionHash}))
    }    
})