added build and sign tx example

coinables · May 19, 2018 · bfc46df · bfc46df
1 parent d12e879
commit bfc46df
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diff --git a/README.md b/README.md
@@ -1,7 +1,6 @@
 # Buidl.js 
 
-Buidl.js is a bitcoinjs-lib wrapper. 
-
+Buidl.js is a bitcoinjs-lib wrapper. This is intended as a tool for developers, hobbyists and crypto-enthusiasts looking for an easy way to create bitcoin keys and build and sign transactions offline without having the hurdle of having to learn the bitcoinjs-lib library. Buidl.js is a simplified (and therefore less powerful) approach to pro grammatically working with bitcoin in javascript. It is NOT intended for production use -- it is 100% client-side javascript.
 
 # Usage
 0. Save a copy of buidl.js or clone the repo
@@ -28,8 +27,21 @@ Buidl.js is a bitcoinjs-lib wrapper.
 		</script>
 		</body>
 
+3. Create key pair from sha256 hash of an input aka brainwallet
 
-3. Get details of a private key
+		<head>
+		<script src="buidl.js"></script>
+		</head>
+		<body>
+		<script>
+		let newPair = buidl.createFrom("satoshi");
+		let address = newPair.addr;
+		let privateKey = newPair.pk;
+		console.log(address, privateKey);
+		</script>
+		</body>
+
+4. Get details of a private key
 
         <head>
 		<script src="buidl.js"></script>
@@ -43,7 +55,7 @@ Buidl.js is a bitcoinjs-lib wrapper.
 		</body>
 
 		
-4. Build and sign a transaction 
+5. Build and sign a transaction 
 
  * createTransaction(typei, txidi, outni, outputi, amounti, wifi, changeout, changeamt, inputvalue)
 
@@ -62,8 +74,14 @@ Buidl.js is a bitcoinjs-lib wrapper.
 		createTransaction("b", "34eceJ...  > spending from p2wpk(bech32)
 
 		createTransaction("3", "34eceJ..", 0, "1P5Ef7FsaD1KsJNSTUcACceEWN9vsUe3eN", 350000, "L1RLQhjuGoQ37QP4jfaEFTHMuEUeh4JdUDkx32xeafhnpzRMDMXD", null, null, 4000000)
+		
+		//returns {"signedtx":"894291f54d..."}
 
+This function will return an object with the key "signedtx" which will contain the raw hex signed transaction that can now be broadcast to any node or API.		
+
+See test.html for an example of using the `createTransaction()` function.    
 
+
 ## Additional Info
 
 		

diff --git a/buidl.js b/buidl.js
diff --git a/create.js b/create.js
@@ -1,4 +1,6 @@
-const bitcoin = require("bitcoinjs-lib");
+let bitcoin = require("bitcoinjs-lib");
+bitcoin.bigi = require('bigi');
+bitcoin.Buffer = require('safe-buffer').Buffer;
 
 function createP2PKH(){
 	  var NETWORK = bitcoin.networks.bitcoin;
@@ -236,14 +238,17 @@ function createTransaction(typei, txidi, outni, outputi, amounti, wifi, changeou
 
 }
 
+
+
 module.exports = {
 	createP2PKH,
 	createP2WPKH,
 	createP2SHP2WPKH,
 	getNewAddress,
 	getDetails,
 	validateAddress,
-	createTransaction
+	createTransaction,
+	bitcoin
 }
 
 //binding functions to buidl 

diff --git a/test.html b/test.html
@@ -4,11 +4,77 @@
 <script src="buidl.js"></script>
 </head>
 <body>
+<table width="100%">
+<tr>
+	<td width="65%"><h3>INPUT</h3>
+		<table width="100%">
+		<tr>
+			<td width="10">Type</td>
+			<td width="60%">Transaction Hash/ID</td>
+			<td width="10%">N Out</td>
+			<td width="20%">Input Value</td>
+		</tr>
+		<tr>
+			<td><input type="text" id="typei" size="10" onkeyup="return checkWitness();"></td>
+			<td><input type="text" id="txidi" size="65"></td>
+			<td><input type="text" id="outni" size="10"></td>
+			<td><input type="text" id="inputvalue" size="20"></td>
+		</tr>
+		</table>
+	</td>
+
+	<td><h3>OUTPUT(S)</h3>
+		<table width="100%">
+		<tr>
+			<td width="70%">Address</td>
+			<td width="30%">Value</td>
+
+		</tr>
+		<tr>
+			<td><input type="text" id="outputi" size="30"></td>
+			<td><input type="text" id="amounti"></td>
+		</tr>
+		<tr>
+			<td><input type="text" id="changeout" size="30"></td>
+			<td><input type="text" id="changeamt"></td>
+		</tr>
+		</table>
+	</td>
+</tr>
+</table>
+
+<p>WIF Private Key of Input</p>
+<input type="text" id="wifi" size="45">
+<br>
+<button onclick="return createTx();">Create Transaction</button>
+<br>
+<textarea id="signedtxoutput" readonly cols="45" rows="3"></textarea>
+
 <script>
-let newPair = buidl.createP2PKH();
-let address = newPair.addr;
-let privateKey = newPair.pk;
-console.log(address, privateKey);
+function createTx(){
+	let typei = document.getElementById("typei").value.trim();
+	let txidi = document.getElementById("txidi").value.trim();
+	let outni = parseInt(document.getElementById("outni").value.trim());
+	let inputvalue = parseInt(document.getElementById("inputvalue").value.trim());
+	inputvalue ? inputvalue : null;
+	let outputi = document.getElementById("outputi").value.trim();
+	let amounti = parseInt(document.getElementById("amounti").value.trim());
+	let changeout = document.getElementById("changeout").value.trim();
+	changeout ? changeout : null;
+	let changeamt = parseInt(document.getElementById("changeamt").value.trim());
+	changeamt ? changeamt : null;
+	let wifi = document.getElementById("wifi").value.trim();
+	let rawtx = buidl.createTransaction(typei, txidi, outni, outputi, amounti, wifi, changeout, changeamt, inputvalue);
+	document.getElementById("signedtxoutput").innerHTML = rawtx.signedtx;
+}
+function checkWitness(){
+    let checkType = document.getElementById("typei").value.trim();
+	if(checkType === "1"){
+		document.getElementById("inputvalue").disabled = true;
+	} else {
+		document.getElementById("inputvalue").disabled = false;
+	}
+}
 </script>
 </body>
 </html>