mirror of https://github.com/embarklabs/embark.git
632 lines
18 KiB
JavaScript
632 lines
18 KiB
JavaScript
/*jshint esversion: 6 */
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//var Ipfs = require('./ipfs.js');
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//=========================================================
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// Embark Smart Contracts
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//=========================================================
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var EmbarkJS = {};
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EmbarkJS.Contract = function(options) {
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var self = this;
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var i, abiElement;
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this.abi = options.abi;
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this.address = options.address;
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this.code = '0x' + options.code;
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this.web3 = options.web3 || web3;
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var ContractClass = this.web3.eth.contract(this.abi);
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this.eventList = [];
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if (this.abi) {
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for (i = 0; i < this.abi.length; i++) {
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abiElement = this.abi[i];
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if (abiElement.type === 'event') {
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this.eventList.push(abiElement.name);
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}
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}
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}
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var messageEvents = function() {
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this.cb = function() {};
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};
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messageEvents.prototype.then = function(cb) {
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this.cb = cb;
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};
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messageEvents.prototype.error = function(err) {
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return err;
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};
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this._originalContractObject = ContractClass.at(this.address);
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this._methods = Object.getOwnPropertyNames(this._originalContractObject).filter(function(p) {
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// TODO: check for forbidden properties
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if (self.eventList.indexOf(p) >= 0) {
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self[p] = function() {
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var promise = new messageEvents();
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var args = Array.prototype.slice.call(arguments);
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args.push(function(err, result) {
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if (err) {
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promise.error(err);
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} else {
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promise.cb(result);
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}
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});
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self._originalContractObject[p].apply(self._originalContractObject[p], args);
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return promise;
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};
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return true;
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} else if (typeof self._originalContractObject[p] === 'function') {
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self[p] = function(_args) {
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var args = Array.prototype.slice.call(arguments);
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var fn = self._originalContractObject[p];
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var props = self.abi.find((x) => x.name == p);
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var promise = new Promise(function(resolve, reject) {
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args.push(function(err, transaction) {
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promise.tx = transaction;
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if (err) {
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return reject(err);
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}
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var getConfirmation = function() {
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self.web3.eth.getTransactionReceipt(transaction, function(err, receipt) {
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if (err) {
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return reject(err);
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}
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if (receipt !== null) {
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return resolve(receipt);
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}
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setTimeout(getConfirmation, 1000);
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});
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};
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if (typeof(transaction) !== "string" || props.constant) {
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resolve(transaction);
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} else {
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getConfirmation();
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}
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});
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fn.apply(fn, args);
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});
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return promise;
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};
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return true;
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}
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return false;
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});
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};
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EmbarkJS.Contract.prototype.deploy = function(args, _options) {
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var self = this;
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var contractParams;
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var options = _options || {};
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contractParams = args || [];
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contractParams.push({
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from: this.web3.eth.accounts[0],
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data: this.code,
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gas: options.gas || 800000
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});
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var contractObject = this.web3.eth.contract(this.abi);
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var promise = new Promise(function(resolve, reject) {
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contractParams.push(function(err, transaction) {
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if (err) {
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reject(err);
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} else if (transaction.address !== undefined) {
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resolve(new EmbarkJS.Contract({
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abi: self.abi,
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code: self.code,
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address: transaction.address
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}));
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}
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});
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// returns promise
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// deploys contract
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// wraps it around EmbarkJS.Contract
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contractObject["new"].apply(contractObject, contractParams);
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});
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return promise;
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};
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EmbarkJS.Contract.prototype.new = EmbarkJS.Contract.prototype.deploy;
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EmbarkJS.Contract.prototype.at = function(address) {
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return new EmbarkJS.Contract({ abi: this.abi, code: this.code, address: address });
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};
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EmbarkJS.Contract.prototype.send = function(value, unit, _options) {
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var options, wei;
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if (typeof unit === 'object') {
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options = unit;
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wei = value;
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} else {
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options = _options || {};
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wei = this.web3.toWei(value, unit);
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}
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options.to = this.address;
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options.value = wei;
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console.log(options);
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this.web3.eth.sendTransaction(options);
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};
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//=========================================================
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// Embark Storage
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//=========================================================
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EmbarkJS.Storage = {};
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EmbarkJS.Storage.Providers = {
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IPFS: 'ipfs',
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SWARM: 'swarm'
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};
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EmbarkJS.Storage.IPFS = {};
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EmbarkJS.Storage.saveText = function(text) {
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return this.currentStorage.saveText(text);
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};
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EmbarkJS.Storage.get = function(hash) {
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return this.currentStorage.get(hash);
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};
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EmbarkJS.Storage.uploadFile = function(inputSelector) {
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return this.currentStorage.uploadFile(inputSelector);
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};
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EmbarkJS.Storage.getUrl = function(hash) {
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return this.currentStorage.getUrl(hash);
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};
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EmbarkJS.Storage.setProvider = function(provider, options) {
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var self = this;
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var promise = new Promise(function(resolve, reject) {
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if (provider.toLowerCase() === EmbarkJS.Storage.Providers.IPFS) {
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//I don't think currentStorage is used anywhere, this might not be needed
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//for now until additional storage providers are supported. But keeping it
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//anyways
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self.currentStorage = EmbarkJS.Storage.IPFS;
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try {
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if (options === undefined) {
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self.ipfsConnection = IpfsApi('localhost', '5001');
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self.getUrl = "http://localhost:8080/ipfs/";
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} else {
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self.ipfsConnection = IpfsApi(options.server, options.port);
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self.getUrl = options.getUrl || "http://localhost:8080/ipfs/";
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}
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resolve(self);
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} catch (err) {
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self.ipfsConnection = null;
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reject(new Error('Failed to connect to IPFS'));
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}
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} else if (provider.toLowerCase() === EmbarkJS.Storage.SWARM) {
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reject('Swarm not implemented');
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// TODO Implement Swarm
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// this.currentStorage = EmbarkJS.Storage.SWARM;
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// if (options === undefined) {
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// //Connect to default Swarm node
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// } else {
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// //Connect using options
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// }
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} else {
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reject('Unknown storage provider');
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}
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});
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return promise;
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};
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EmbarkJS.Storage.IPFS.saveText = function(text) {
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var promise = new Promise(function(resolve, reject) {
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if (!EmbarkJS.Storage.ipfsConnection) {
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var connectionError = new Error('No IPFS connection. Please ensure to call Embark.Storage.setProvider()');
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reject(connectionError);
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}
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EmbarkJS.Storage.ipfsConnection.add((new EmbarkJS.Storage.ipfsConnection.Buffer(text)), function(err, result) {
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if (err) {
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reject(err);
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} else {
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resolve(result[0].path);
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}
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});
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});
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return promise;
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};
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EmbarkJS.Storage.IPFS.get = function(hash) {
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// TODO: detect type, then convert if needed
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//var ipfsHash = web3.toAscii(hash);
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var promise = new Promise(function(resolve, reject) {
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if (!EmbarkJS.Storage.ipfsConnection) {
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var connectionError = new Error('No IPFS connection. Please ensure to call Embark.Storage.setProvider()');
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reject(connectionError);
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}
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EmbarkJS.Storage.ipfsConnection.object.get([hash]).then(function(node) {
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resolve(node.data);
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}).catch(function(err) {
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reject(err);
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});
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});
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return promise;
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};
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EmbarkJS.Storage.IPFS.uploadFile = function(inputSelector) {
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var file = inputSelector[0].files[0];
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if (file === undefined) {
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throw new Error('no file found');
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}
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var promise = new Promise(function(resolve, reject) {
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if (!EmbarkJS.Storage.ipfsConnection) {
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var connectionError = new Error('No IPFS connection. Please ensure to call Embark.Storage.setProvider()');
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reject(connectionError);
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}
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var reader = new FileReader();
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reader.onloadend = function() {
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var fileContent = reader.result;
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var buffer = EmbarkJS.Storage.ipfsConnection.Buffer.from(fileContent);
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EmbarkJS.Storage.ipfsConnection.add(buffer, function(err, result) {
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if (err) {
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reject(err);
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} else {
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resolve(result[0].path);
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}
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});
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};
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reader.readAsArrayBuffer(file);
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});
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return promise;
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};
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EmbarkJS.Storage.IPFS.getUrl = function(hash) {
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//var ipfsHash = web3.toAscii(hash);
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//return 'http://localhost:8080/ipfs/' + hash;
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return (self.getUrl || "http://localhost:8080/ipfs/") + hash;
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};
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//=========================================================
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// Embark Messaging
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//=========================================================
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EmbarkJS.Messages = {};
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EmbarkJS.Messages.web3CompatibleWithV5 = function() {
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var _web3 = new Web3();
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if (typeof(_web3.version) === "string") {
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return true;
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} else {
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return parseInt(_web3.version.api.split('.')[1], 10) >= 20;
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}
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};
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EmbarkJS.Messages.isNewWeb3 = function() {
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var _web3 = new Web3();
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if (typeof(_web3.version) === "string") {
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return true;
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} else {
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return parseInt(_web3.version.api.split('.')[0], 10) >= 1;
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}
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};
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EmbarkJS.Messages.getWhisperVersion = function(cb) {
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if (this.isNewWeb3()) {
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this.currentMessages.web3.shh.getVersion(function(err, version) {
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cb(err, version);
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});
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} else {
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this.currentMessages.web3.version.getWhisper(function(err, res) {
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cb(err, web3.version.whisper);
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});
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}
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};
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EmbarkJS.Messages.setProvider = function(provider, options) {
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var self = this;
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var ipfs;
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if (provider === 'whisper') {
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this.currentMessages = EmbarkJS.Messages.Whisper;
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if (typeof variable === 'undefined' && typeof(web3) === 'undefined') {
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let provider;
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if (options === undefined) {
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provider = "localhost:8546";
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} else {
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provider = options.server + ':' + options.port;
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}
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if (this.isNewWeb3()) {
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// TODO: add current Provider
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self.currentMessages.web3 = new Web3(new Web3.providers.WebsocketProvider("ws://" + provider));
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} else {
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self.currentMessages.web3 = new Web3(new Web3.providers.HttpProvider("http://" + provider));
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}
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}
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console.log("getting whisper version");
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self.getWhisperVersion(function(err, version) {
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if (err) {
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console.log("whisper not available");
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} else if (version >= 5) {
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if (self.web3CompatibleWithV5()) {
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self.currentMessages.web3.shh.newSymKey().then((id) => {self.currentMessages.symKeyID = id;});
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self.currentMessages.web3.shh.newKeyPair().then((id) => {self.currentMessages.sig = id;});
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} else {
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console.log("this version of whisper is not supported yet; try a version of geth bellow 1.6.1");
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}
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} else {
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self.currentMessages.identity = self.currentMessages.web3.shh.newIdentity();
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}
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self.currentMessages.whisperVersion = self.currentMessages.web3.version.whisper;
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});
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} else if (provider === 'orbit') {
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this.currentMessages = EmbarkJS.Messages.Orbit;
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if (options === undefined) {
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ipfs = HaadIpfsApi('localhost', '5001');
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} else {
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ipfs = HaadIpfsApi(options.host, options.port);
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}
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this.currentMessages.orbit = new Orbit(ipfs);
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if (typeof(web3) === "undefined") {
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this.currentMessages.orbit.connect(Math.random().toString(36).substring(2));
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} else {
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this.currentMessages.orbit.connect(web3.eth.accounts[0]);
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}
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} else {
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throw Error('Unknown message provider');
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}
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};
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EmbarkJS.Messages.sendMessage = function(options) {
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return this.currentMessages.sendMessage(options);
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};
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EmbarkJS.Messages.listenTo = function(options) {
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return this.currentMessages.listenTo(options);
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};
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EmbarkJS.Messages.Whisper = {};
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EmbarkJS.Messages.Whisper.sendMessage = function(options) {
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var topics = options.topic || options.topics;
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var data = options.data || options.payload;
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var identity;
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if (!EmbarkJS.Messages.isNewWeb3()) {
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identity = options.identity || this.identity || web3.shh.newIdentity();
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}
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var ttl = options.ttl || 100;
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var priority = options.priority || 1000;
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var _topics;
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if (topics === undefined) {
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throw new Error("missing option: topic");
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}
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if (data === undefined) {
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throw new Error("missing option: data");
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}
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if (EmbarkJS.Messages.isNewWeb3()) {
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topics = this.web3.utils.toHex(topics).slice(0, 10);
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} else {
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if (typeof topics === 'string') {
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_topics = [EmbarkJS.Utils.fromAscii(topics)];
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} else {
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// TODO: replace with es6 + babel;
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for (var i = 0; i < topics.length; i++) {
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_topics.push(EmbarkJS.Utils.fromAscii(topics[i]));
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}
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}
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topics = _topics;
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}
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var payload = JSON.stringify(data);
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var message;
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if (EmbarkJS.Messages.isNewWeb3()) {
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message = {
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symKeyID: this.symKeyID, // encrypts using the sym key ID
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sig: this.sig, // signs the message using the keyPair ID
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ttl: 10,
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topic: topics,
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payload: EmbarkJS.Utils.fromAscii('hello'),
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powTime: 3,
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powTarget: 0.5
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};
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} else {
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message = {
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from: identity,
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topics: topics,
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payload: EmbarkJS.Utils.fromAscii(payload),
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ttl: ttl,
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priority: priority
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};
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}
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return this.web3.shh.post(message, function() {});
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};
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EmbarkJS.Messages.Whisper.listenTo = function(options) {
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var topics = options.topic || options.topics;
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var _topics = [];
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var messageEvents = function() {
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this.cb = function() {};
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};
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messageEvents.prototype.then = function(cb) {
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this.cb = cb;
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};
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messageEvents.prototype.error = function(err) {
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return err;
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};
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messageEvents.prototype.stop = function() {
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this.filter.stopWatching();
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};
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if (EmbarkJS.Messages.isNewWeb3()) {
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topics = [this.web3.utils.toHex(topics).slice(0, 10)];
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} else {
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if (typeof topics === 'string') {
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_topics = [topics];
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} else {
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// TODO: replace with es6 + babel;
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for (var i = 0; i < topics.length; i++) {
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_topics.push(topics[i]);
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}
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}
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topics = _topics;
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}
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if (EmbarkJS.Messages.isNewWeb3()) {
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let promise = new messageEvents();
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let filter = this.web3.shh.subscribe("messages", {
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symKeyID: this.symKeyID,
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topics: topics
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}).on('data', function(result) {
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var payload = JSON.parse(EmbarkJS.Utils.toAscii(result.payload));
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var data;
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data = {
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topic: result.topic,
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data: payload,
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//from: result.from,
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time: result.timestamp
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};
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promise.cb(payload, data, result);
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});
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promise.filter = filter;
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return promise;
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} else {
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var filterOptions = {
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topics: topics
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};
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let promise = new messageEvents();
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let filter = this.web3.shh.filter(filterOptions, function(err, result) {
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var payload = JSON.parse(EmbarkJS.Utils.toAscii(result.payload));
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var data;
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if (err) {
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promise.error(err);
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} else {
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data = {
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topic: topics,
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data: payload,
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from: result.from,
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time: (new Date(result.sent * 1000))
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};
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promise.cb(payload, data, result);
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}
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});
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promise.filter = filter;
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return promise;
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}
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};
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EmbarkJS.Messages.Orbit = {};
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EmbarkJS.Messages.Orbit.sendMessage = function(options) {
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var topics = options.topic || options.topics;
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var data = options.data || options.payload;
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if (topics === undefined) {
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throw new Error("missing option: topic");
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}
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if (data === undefined) {
|
|
throw new Error("missing option: data");
|
|
}
|
|
|
|
if (typeof topics === 'string') {
|
|
topics = topics;
|
|
} else {
|
|
// TODO: better to just send to different channels instead
|
|
topics = topics.join(',');
|
|
}
|
|
|
|
this.orbit.join(topics);
|
|
|
|
var payload = JSON.stringify(data);
|
|
|
|
this.orbit.send(topics, data);
|
|
};
|
|
|
|
EmbarkJS.Messages.Orbit.listenTo = function(options) {
|
|
var self = this;
|
|
var topics = options.topic || options.topics;
|
|
|
|
if (typeof topics === 'string') {
|
|
topics = topics;
|
|
} else {
|
|
topics = topics.join(',');
|
|
}
|
|
|
|
this.orbit.join(topics);
|
|
|
|
var messageEvents = function() {
|
|
this.cb = function() {};
|
|
};
|
|
|
|
messageEvents.prototype.then = function(cb) {
|
|
this.cb = cb;
|
|
};
|
|
|
|
messageEvents.prototype.error = function(err) {
|
|
return err;
|
|
};
|
|
|
|
var promise = new messageEvents();
|
|
|
|
this.orbit.events.on('message', (channel, message) => {
|
|
// TODO: looks like sometimes it's receving messages from all topics
|
|
if (topics !== channel) return;
|
|
self.orbit.getPost(message.payload.value, true).then((post) => {
|
|
var data = {
|
|
topic: channel,
|
|
data: post.content,
|
|
from: post.meta.from.name,
|
|
time: (new Date(post.meta.ts))
|
|
};
|
|
promise.cb(post.content, data, post);
|
|
});
|
|
});
|
|
|
|
return promise;
|
|
};
|
|
|
|
EmbarkJS.Utils = {
|
|
fromAscii: function(str) {
|
|
var _web3 = new Web3();
|
|
return _web3.utils ? _web3.utils.fromAscii(str) : _web3.fromAscii(str);
|
|
}
|
|
};
|
|
|
|
module.exports = EmbarkJS;
|