moving some bitcoin methods to API

Author: nsjames

package-lock.json

@@ -30,6 +30,7 @@
     "babel-plugin-transform-class-properties": "^6.24.1",
     "babel-plugin-transform-object-rest-spread": "^6.26.0",
     "babel-preset-env": "^1.6.1",
+    "blockchain.info": "^2.12.1",
     "bluebird": "^3.5.3",
     "body-parser": "^1.18.2",
     "compression": "^1.7.3",

package.json

@@ -22,6 +22,7 @@ import {dateId} from "./util/dates";
 import ReflinkService from "./services/ReflinkService";
 import config from "./util/config";
 import * as ecc from "eosjs-ecc";
+import BitcoinService from "./services/BitcoinService";
 
 const bucket = couchbase('scatter');
 
@@ -241,33 +242,6 @@ routes.post('/apps', async (req, res) => {
 
 routes.post('/create_eos', async (req, res) => {
 	returnResult({error:"makeaccounts is no longer valid."}, req, res);
-	// const defaultError = {error:'There was an error creating the account. Please try again later.'};
-	// const {transaction_id, signature, keys, account_name} = req.body;
-	//
-	// if(!keys.hasOwnProperty('active') || !keys.hasOwnProperty('owner') || !keys.active.length || !keys.owner.length){
-	// 	return returnResult({error:'Invalid keys'}, req, res);
-	// }
-	//
-	// const minimumCost = await AccountService.getAccountMinimumCost();
-	// if(!minimumCost) return returnResult(defaultError, req, res);
-	//
-	// const transactionStatus = await TransactionService.eos(transaction_id, minimumCost, PAYMENT_ACCOUNTS.EOS.NEW_ACCOUNT);
-	// if(!transactionStatus || transactionStatus.hasOwnProperty('error')) return returnResult(transactionStatus.hasOwnProperty('error')
-	// 	? {error:transactionStatus.error}
-	// 	: {error:'The transaction could not be verified.'}, req, res);
-	//
-	//
-	// const [quantity, memo] = transactionStatus;
-	//
-	// const leftForResources = parseFloat(quantity - minimumCost).toFixed(4);
-	// if(!leftForResources || leftForResources <= 0) return returnResult({error:'There was not enough EOS left for resources.'}, req, res);
-	//
-	// if(memo !== keys.active) return returnResult({error:'The signature for account creation did not match the key from the exchange memo'}, req, res);
-	//
-	// const created = await AccountService.createEosAccount(account_name, keys, leftForResources, transaction_id, signature);
-	// if(!created) return returnResult(defaultError, req, res);
-	//
-	// returnResult({created}, req, res);
 });
 
 routes.post('/create_bridge', async (req, res) => {
@@ -306,6 +280,30 @@ routes.get('/machine/:id', async (req, res) => {
 
 
 
+/************************************************/
+/*                                              */
+/*              BITCOIN HELPERS                 */
+/*                                              */
+/************************************************/
+
+
+routes.get('/btc/balance/:address', async (req, res) => {
+	const address = req.params.address;
+	returnResult(await BitcoinService.getBalance(address), req, res);
+});
+
+routes.get('/btc/unspent/:address', async (req, res) => {
+	const address = req.params.address;
+	returnResult(await BitcoinService.getUnspent(address), req, res);
+});
+
+routes.post('/btc/pushtx', async (req, res) => {
+	const signed = req.body.signed;
+	returnResult(await BitcoinService.pushTransaction(signed), req, res);
+});
+
+
+
 routes.all('*', (req, res) => res.sendStatus(403));
 
 export default routes;

src/routes.js

@@ -0,0 +1,30 @@
+import { blockexplorer, pushtx } from 'blockchain.info';
+
+const SELECTED_CHAIN = 0;
+
+const explorer = blockexplorer.usingNetwork(SELECTED_CHAIN);
+
+
+export default class BitcoinService {
+
+	static async getBalance(address){
+		return explorer.getBalance(address);
+	}
+
+	static async getUnspent(address){
+		return explorer.getUnspentOutputs(address);
+	}
+
+	static pushTransaction(signedTransaction){
+		console.log('signed', signedTransaction);
+		// Blockchain.info uses a very old version of lodash via the request-promise library.
+		// This handles some prototype pollution vectors.
+		if(signedTransaction.toString().indexOf('constructor') > -1) return null;
+
+		return pushtx.usingNetwork(SELECTED_CHAIN).pushtx(signedTransaction).catch(error => {
+			if(error.indexOf('Error #-26: dust')) return 'The amount you are trying to send is too low. Bitcoin considers this "dust".';
+			return error;
+		});
+	}
+
+}