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@Chanutg
Last active May 17, 2019
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const Web3 = require('web3');
const web3js = new Web3(Web3.givenProvider || 'https://ropsten.infura.io/VOTRE_ACCES_INFURA', null, {});
const Tx = require('ethereumjs-tx');
const express = require('express');
const router = express.Router();
const BigNumber = require('bignumber.js');
var contractABI = CODE_ABI_DE_VOTRE_TOKEN
contractAddress = "ADRESSE_DU_CONTRAT_DE_VOTRE_TOKEN";
let makeTransaction = (fromAdresse, toAdresse, amount) => {
var tokenContract = new web3js.eth.Contract(contractABI, contractAddress);
var myAddress = 'VOTRE_ADRESSE';
var privateKey = Buffer.from('VOTRE_CLE_PRIVEE', 'hex')
var count;
return new Promise ((res, rej) => {
if (!fromAdresse || !toAdresse || !amount){
return res({
message: 'You must send all datas'
});
}
return web3js.eth.getTransactionCount(myAddress)
.then(function(c){
count = c;
hexamount = web3js.utils.toHex(amount * DECIMALS_DE_VOTRE_TOKEN);
var rawTransaction = {"from":myAddress, "gasPrice":web3js.utils.toHex(20 * 1e9),"gasLimit":web3js.utils.toHex(210000),"to":contractAddress,"value":"0x0","data":tokenContract.methods.transfer(toAdresse, hexamount).encodeABI(),"nonce":web3js.utils.toHex(count)}
var transaction = new Tx(rawTransaction);
transaction.sign(privateKey);
web3js.eth.sendSignedTransaction('0x'+transaction.serialize().toString('hex'))
return res({
message: "transaction from " + myAddress + " to " + toAdresse + " of " + amount + " done !"
});
})
.catch(error => {
console.log('caught', error.message);
});
});
};
router.post("/sendtx", (req, res) => {
var myAddress = 'VOTRE_ADDRESSE';
var privateKey = Buffer.from('VOTRE_CLE_PRIVEE', 'hex')
makeTransaction(myAddress, req.body.to, req.body.amount)
.then(transaction => {
res.send({
success: true,
message: transaction.message
});
})
.catch(err => {
console.log("error");
res.send(
{
success: false,
err: err.message
});
});
});
module.exports = router;
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