proofofphone/web/helpers/etherHelper.js

module.exports = function (app) {
	var web3 = app.web3;
	var generateError = app.generateError;

	var contract;
	app.attachToContract = attachToContract;

	var contractABI = app.config.smartContract.abi;

	function attachToContract(cb) {
		if(!web3.isConnected()) {
			if (cb) cb({code: 200, title: "Error", message: "check RPC"}, null);
			return;
		}

		console.log(web3.eth.accounts);
		web3.eth.defaultAccount = web3.eth.accounts[0];
		console.log("web3.eth.defaultAccount:");
		console.log(web3.eth.defaultAccount);
		
		var MyContract = web3.eth.contract(contractABI);
		contract = MyContract.at(app.contractAddress);
		
		if (cb) cb(null, contract);
	}

	function newPhoneToAddr(wallet, phone, cb) {
		if(!web3.isConnected()) {
			if (cb) cb({code: 500, title: "Error", message: "check RPC"}, null);
			return;
		}

		contract.newPhoneToAddr.sendTransaction(wallet, phone, {gas: 100000, from: web3.eth.defaultAccount}, function(err, result) {
			cb(err, result);
		});
	}

	app.post('/newPhoneToAddr', function(request, response) {
		var globalToken = request.body.globalToken;

		if (globalToken != app.config.globalToken) {
			generateError(response, 401, "Unauthorized", "Wrong app token");
			return;
		}

		var phone = parseInt(request.body.phone);
		var wallet = request.body.wallet;
		var code = request.body.code;
		console.log(wallet);
		console.log(request.body.wallet);
		var isHex  = /^0x[0-9A-Fa-f]{40}$/i.test(wallet);

		if (!isHex) {
			generateError(response, 500, "Error", "Not valid address");
			return;
		}

		if (!contract) {
			generateError(response, 500, "Error", "RPC doesn't work");
			return;
		}

		contract.getPaymentByAddress.call(wallet, function(err, val) {
			console.log("err:");
			console.log(err);
			console.log("val:");
			console.log(val);

			if (val <= 0) {
				generateError(response, 1000, "Warning", "Payment wasn't sent yet");
				return;
			}

			contract.getPaymentDataByAddress.call(wallet, function(err, paymentData) {
				console.log("err:");
				console.log(err);
				console.log("paymentData:");
				console.log(paymentData);


				var hash = app.crypto.createHmac('sha256', app.config.salt)
               	.update(code)
               	.digest('hex');

               	console.log("hash:");
               	console.log(hash);

               	//var hashBuf = new Buffer(hash, 'binary').toString('hex');
				//console.log("hashBuf:");
               	//console.log(hashBuf.toString());
               	
               	console.log(paymentData.substring(2) + " == " + hash);
				if (paymentData.substring(2) != hash) {
					generateError(response, 1000, "Warning", "Sent message doesn't match with the one displayed on the page");
					return;
				}

				newPhoneToAddr(wallet, phone, function(err, result) {
					console.log(err);
					console.log(result);
					response.send({
				      success : {
				        code : 200,
				        title : "Success",
				        message : "Phone successfully joined"
				      }
				    });
				});
			});
		});
	});

	app.post('/getPhoneByAddress', function(request, response) {
		var globalToken = request.body.globalToken;
		if (globalToken != app.config.globalToken) {
			generateError(response, 401, "Unauthorized", "Wrong app token");
			return;
		}

		var wallet = request.body.wallet;
		var isHex  = /^0x[0-9A-Fa-f]{40}$/i.test(wallet);
		if (!isHex) {
			generateError(response, 500, "Error", "Not valid address");
			return;
		}

		if (!contract) {
			generateError(response, 500, "Error", "RPC doesn't work");
			return;
		}

		var phone = contract.getPhoneByAddress.call(wallet, function(err, obj) {
			console.log("err:");
			console.log(err);
			console.log("obj:");
			console.log(obj);
			response.send({
		      success : {
		        code : 200,
		        title : "Success",
		        message : "Phone successfully joined",
		        phone: obj
		      }
		    });
		});
	});

	app.post('/getAddressByPhone', function(request, response) {
		var globalToken = request.body.globalToken;
		if (globalToken != app.config.globalToken) {
			generateError(response, 401, "Unauthorized", "Wrong app token");
			return;
		}

		if (!contract) {
			generateError(response, 500, "Error", "RPC doesn't work");
			return;
		}
			
		var phone = parseInt(request.body.phone);
		var address = contract.phones.call(phone, function(err, address) {
			console.log(address);
			response.send({
		      success : {
		        code : 200,
		        title : "Success",
		        message : "Phone successfully joined",
		        addr: address
		      }
		    });
		});
	});
};