feat(@cmd): add very basic embark init to add an embark.json file

Author: jrainville

packages/core/core/constants.json

@@ -111,5 +111,24 @@
   "environments": {
     "development": "development"
   },
-  "defaultMigrationsDir": "migrations"
+  "defaultMigrationsDir": "migrations",
+  "defaultEmbarkConfig":  {
+    "contracts": ["contracts/**"],
+    "app": {},
+    "buildDir": "dist/",
+    "config": "config/",
+    "migrations": "migrations",
+    "versions": {
+      "solc": "0.6.1"
+    },
+    "plugins": {
+    },
+    "options": {
+      "solc": {
+        "optimize": true,
+        "optimize-runs": 200
+      }
+    },
+    "generationDir": "embarkArtifacts"
+  }
 }

packages/core/core/src/config.ts

@@ -5,7 +5,6 @@ import { EmbarkEmitter as Events } from './events';
 import { filesMatchingPattern, fileMatchesPattern } from './utils/utils';
 const path = require('path');
 const deepEqual = require('deep-equal');
-const web3 = require('web3');
 import { __ } from 'embark-i18n';
 import {
   buildUrlFromConfig,
@@ -23,13 +22,12 @@ import {
   getExternalContractUrl
 } from 'embark-utils';
 import { Logger } from 'embark-logger';
-import { readJsonSync } from 'fs-extra';
 const cloneDeep = require('lodash.clonedeep');
 const { replaceZeroAddressShorthand } = AddressUtils;
 
-import { getBlockchainDefaults, getContractDefaults, embarkConfigDefaults } from './configDefaults';
+import { getBlockchainDefaults, getContractDefaults } from './configDefaults';
 
-const constants = readJsonSync(path.join(__dirname, '../constants.json'));
+const constants = require('../constants.json');
 
 const DEFAULT_CONFIG_PATH = 'config/';
 
@@ -84,7 +82,7 @@ export class Config {
 
   events: Events;
 
-  embarkConfig: EmbarkConfig = embarkConfigDefaults;
+  embarkConfig: EmbarkConfig = constants.defaultEmbarkConfig;
 
   context: any;
 
@@ -629,7 +627,7 @@ export class Config {
   }
 
   loadEmbarkConfigFile() {
-    this.embarkConfig = recursiveMerge(embarkConfigDefaults, this.embarkConfig);
+    this.embarkConfig = recursiveMerge(constants.defaultEmbarkConfig, this.embarkConfig);
 
     const contracts = this.embarkConfig.contracts;
     // determine contract 'root' directories

packages/core/core/src/configDefaults.ts

@@ -4,22 +4,6 @@ import { join } from "path";
 
 const constants = readJsonSync(join(__dirname, '../constants.json'));
 
-export const embarkConfigDefaults = {
-  contracts: [],
-  config: '',
-  migrations: 'migrations',
-  versions: {
-    solc: "0.6.1"
-  },
-  options: {
-    solc: {
-      "optimize": true,
-      "optimize-runs": 200
-    }
-  },
-  generationDir: "embarkArtifacts"
-};
-
 export function getBlockchainDefaults(env) {
   const defaults = {
     clientConfig: {

packages/core/engine/package.json

@@ -66,6 +66,7 @@
     "embark-ethereum-blockchain-client": "^5.3.0-nightly.0",
     "embark-ganache": "^5.3.0-nightly.0",
     "embark-geth": "^5.3.0-nightly.0",
+    "embark-i18n": "^5.2.3",
     "embark-library-manager": "^5.3.0-nightly.0",
     "embark-logger": "^5.3.0-nightly.0",
     "embark-mocha-tests": "^5.3.0-nightly.0",
@@ -87,7 +88,8 @@
     "embark-vyper": "^5.2.3",
     "embark-watcher": "^5.3.0-nightly.0",
     "embark-web3": "^5.3.0-nightly.0",
-    "embark-webserver": "^5.3.0-nightly.0"
+    "embark-webserver": "^5.3.0-nightly.0",
+    "fs-extra": "8.1.0"
   },
   "devDependencies": {
     "embark-solo": "^5.2.3",

packages/core/engine/src/defaultEmbarkJson.js

@@ -6,9 +6,11 @@ import {
   ProcessManager,
   ServicesMonitor
 } from 'embark-core';
+import fs from 'fs-extra';
 import { normalizeInput } from 'embark-utils';
 import { Logger } from 'embark-logger';
-import defaultEmbarkJson from './defaultEmbarkJson';
+import { __ } from 'embark-i18n';
+const constants = require('embark-core/constants');
 const EMBARK_PROCESS_NAME = 'embark';
 
 export class Engine {
@@ -61,7 +63,7 @@ export class Engine {
     this.env = options.env;
     this.client = options.client;
     this.locale = options.locale;
-    this.embarkConfig = options.embarkConfig || defaultEmbarkJson;
+    this.embarkConfig = options.embarkConfig || constants.defaultEmbarkConfig;
     this.interceptLogs = options.interceptLogs;
     this.version = options.version;
     this.logFile = options.logFile;
@@ -118,6 +120,13 @@ export class Engine {
     callback();
   }
 
+  async generateEmbarkJSON() {
+    if (fs.existsSync('embark.json')) {
+      throw new Error(__('embark.json already there. Will not overwrite'));
+    }
+    return fs.writeFile('embark.json', JSON.stringify(constants.defaultEmbarkConfig, null, 2));
+  }
+
   loadDappPlugins() {
     if (this.config) {
       this.config.plugins.loadPlugins();

packages/core/engine/src/index.ts

@@ -127,6 +127,9 @@
     {
       "path": "../core"
     },
+    {
+      "path": "../i18n"
+    },
     {
       "path": "../logger"
     },

packages/core/engine/tsconfig.json

@@ -411,11 +411,9 @@ EmbarkJson.prototype.log = function () {
 
 EmbarkJson.prototype.logMissingFile = function () {
   if (Json.prototype.logMissingFile.call(this, false)) {
-    // Use default embark.json
     if (isDappCmd(this.cmd)) {
-      // TODO add message about embark init once it's available
-      embarklog['warn']('No embark.json file found.\n' +
-        'You can find a basic embark.json file here: https://github.com/embarklabs/embark/blob/master/dapps/templates/boilerplate/embark.json');
+      embarklog['error']('No embark.json file found.\n' +
+        'Run `embark init` to generate one automatically.');
       exitWithError();
     }
   }
@@ -993,6 +991,7 @@ function isDappCmd(cmd) {
     '-h',
     '--help',
     'new',
+    'init',
     'demo',
     'version',
     'help'

packages/embark/src/bin/embark.js

@@ -11,6 +11,7 @@ class Cmd {
   }
 
   process(args) {
+    this.init();
     this.newApp();
     this.demo();
     this.build();
@@ -37,6 +38,15 @@ class Cmd {
     program.parse(args);
   }
 
+  init() {
+    program
+      .command('init')
+      .description(__('Creates a basic embark.json file'))
+      .action(() => {
+        this.embark.embarkInit();
+      });
+  }
+
   newApp() {
 
     let validateName = function (value) {
@@ -181,7 +191,7 @@ class Cmd {
       .option('-t, --track', __('Force tracking of migration script', false))
       .description(__("Executes specified scripts or all scripts in 'directory'"))
       .action((env, target, options) => {
-        embark.exec({
+        this.embark.exec({
           env,
           target,
           forceTracking: options.track

packages/embark/src/cmd/cmd.js

@@ -20,9 +20,6 @@ const pkg = readJsonSync(join(__dirname, '../../package.json'));
 class EmbarkController {
 
   constructor(options) {
-    if (!options.embarkConfig) {
-      throw new Error('No embarkConfig found in options');
-    }
     this.embarkConfig = options.embarkConfig;
     this.version = pkg.version;
 
@@ -39,6 +36,19 @@ class EmbarkController {
     this.plugins = this.config.plugins;
   }
 
+  async embarkInit() {
+    const engine = new Engine({});
+    try {
+      await engine.generateEmbarkJSON();
+    } catch (e) {
+      console.error(__('Error generating embark.json file'));
+      console.error(e.message);
+      process.exit(1);
+    }
+    console.info(__('embark.json generated. You can now run all Embark commands.').green);
+    process.exit();
+  }
+
   blockchain(options) {
     this.context = options.context || [constants.contexts.blockchain];
     const webServerConfig = {};