Embark's own ganache-cli will always be found

lib/cmds/simulator.js

@@ -0,0 +1,62 @@
+let shelljs = require('shelljs');
+let proxy = require('../core/proxy');
+const Ipc = require('../core/ipc');
+const constants = require('../constants.json');
+
+class Simulator {
+  constructor(options) {
+    this.blockchainConfig = options.blockchainConfig;
+    this.logger = options.logger;
+  }
+
+  run(options) {
+    let cmds = [];
+
+    const testrpc = shelljs.which('testrpc');
+    const ganache = shelljs.which('ganache-cli-embark');
+    // if (!testrpc && !ganache) {
+    //   this.logger.warn(__('%s is not installed on your machine', 'Ganache CLI (TestRPC)'));
+    //   this.logger.info(__('You can install it by running: %s', 'npm -g install ganache-cli'));
+    //   process.exit();
+    // }
+
+    let useProxy = this.blockchainConfig.proxy || false;
+    let host = (options.host || this.blockchainConfig.rpcHost || 'localhost');
+    let port = (options.port || this.blockchainConfig.rpcPort || 8545);
+
+    cmds.push("-p " + (port + (useProxy ? constants.blockchain.servicePortOnProxy : 0)));
+    if (!ganache) {
+      cmds.push("-h " + host);
+    }
+    cmds.push("-a " + (options.numAccounts || 10));
+    cmds.push("-e " + (options.defaultBalance || 100));
+    cmds.push("-l " + (options.gasLimit || 8000000));
+
+    // adding mnemonic only if it is defined in the blockchainConfig or options
+    let simulatorMnemonic = this.blockchainConfig.simulatorMnemonic || options.simulatorMnemonic;
+    if (simulatorMnemonic) {
+      cmds.push("--mnemonic \"" + (simulatorMnemonic) +"\"");
+    }
+
+    // adding blocktime only if it is defined in the blockchainConfig or options
+    let simulatorBlocktime = this.blockchainConfig.simulatorBlocktime || options.simulatorBlocktime;
+    if (simulatorBlocktime) {
+      cmds.push("-b \"" + (simulatorBlocktime) +"\"");
+    }
+
+    // const programName = ganache ? 'ganache-cli' : 'testrpc';
+    // const program = ganache ? ganache : testrpc;
+    const programName = 'ganache-cli';
+    const program = ganache;
+    console.log(`running: ${programName} ${cmds.join(' ')}`);
+    shelljs.exec(`${program} ${cmds.join(' ')}`, {async : true});
+
+    if(useProxy){
+      let ipcObject = new Ipc({ipcRole: 'client'});
+      proxy.serve(ipcObject, host, port, false);
+    }
+    
+  }
+}
+
+module.exports = Simulator;