cloud-red/src/cli/commands/init.js

Harnessing Serverless for your cloud integration needs

const fs = require('fs-extra');
const error = require('./util/error');
const path = require('path');

function genLambdaJs(flowFileName) {
  return `'use strict';

const { FlowBuilder } = require('cloud-red');
const flow = new FlowBuilder('./${flowFileName}');

exports.handler = (event, context) => {
  return flow.handleEvent(event, context);
};`;
}

function genFlowJson() {
  return ``;
}

function genPackageJson(lambdaName, lambdaFile, flowFile) {
  return `{
    "name": "${lambdaName}",
    "version": "1.0.0",
    "description": "",
    "main": "${lambdaFile}",
    "files": [
      "${lambdaFile}",
      "${flowFile}",
      "node_modules/**/*"
    ],
    "scripts": {
    },
    "keywords": [],
    "author": "",
    "license": "ISC",
    "dependencies": {
      "cloud-red": "^0.7.23"
    },
    "devDependencies": {
      "aws-sdk": "^2.513.0"
    }
  }
  `;
}

function createFile(baseDir, fileName, content) {
  fs.outputFileSync(path.join(baseDir, fileName), content, 'utf-8');
}

function initCmd(args) {
  // args._[0] = init
  const projectName = args._[1];

  if (!projectName) {
    error(
      'Project name not specified. \n\nType "cloud-red help init" for more information',
      true
    );
  }
  const defaultLambdaFilename = 'lambda.js';
  const defaultFlowFilename = `${projectName}-flow.json`;
  const projectDir = path.join(process.cwd(), projectName);

  fs.ensureDir(projectDir)
    .then(() => {
      // create `package.json` file
      createFile(
        projectDir,
        'package.json',
        genPackageJson(projectName, defaultLambdaFilename, defaultFlowFilename)
      );

      // create `lambda.js` file
      createFile(
        projectDir,
        defaultLambdaFilename,
        genLambdaJs(defaultFlowFilename)
      );

      // create `{project}-flow.json` file
      createFile(
        projectDir,
        defaultFlowFilename,
        genFlowJson(defaultFlowFilename)
      );
      console.log(
        `Successfully generated boilerplate for template: ${projectName}`
      );
      console.log(
        `NOTE: You are ready to edit the flow cloud-red editor. Happy flowing!!`
      );
    })
    .catch(err => {
      error(`Directory cannot be created due to: ${err.toString()}`, true);
    });
}

module.exports = {
  createFile,
  genFlowJson,
  initCmd
};