From acf6fdfd105bba476efb171f8cd92d752ecad691 Mon Sep 17 00:00:00 2001
From: Hagop Jamkojian <hagopj13@gmail.com>
Date: Fri, 25 Dec 2020 19:49:54 +0200
Subject: [PATCH] Add script to create app using npm init

---
 .eslintignore          |   1 +
 .gitignore             |   3 --
 bin/createNodejsApp.js | 111 +++++++++++++++++++++++++++++++++++++++++
 package.json           |   3 +-
 4 files changed, 114 insertions(+), 4 deletions(-)
 create mode 100644 bin/createNodejsApp.js

diff --git a/.eslintignore b/.eslintignore
index 3c3629e6..ed4598e7 100644
--- a/.eslintignore
+++ b/.eslintignore
@@ -1 +1,2 @@
 node_modules
+bin
diff --git a/.gitignore b/.gitignore
index 2da451ac..e516023e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,9 +1,6 @@
 # Dependencies
 node_modules
 
-# package-lock.json (use yarn.lock instead)
-package-lock.json
-
 # yarn error logs
 yarn-error.log
 
diff --git a/bin/createNodejsApp.js b/bin/createNodejsApp.js
new file mode 100644
index 00000000..38c41cb8
--- /dev/null
+++ b/bin/createNodejsApp.js
@@ -0,0 +1,111 @@
+#!/usr/bin/env node
+const util = require('util');
+const path = require('path');
+const fs = require('fs');
+const { execSync } = require('child_process')
+
+// Utility functions
+const exec = util.promisify(require("child_process").exec);
+async function runCmd(command) {
+  try {
+    const { stdout, stderr } = await exec(command);
+    console.log(stdout);
+    console.log(stderr);
+  } catch {
+    (error) => {
+      console.log(error);
+    };
+  }
+}
+
+async function hasYarn() {
+  try {
+    await execSync('yarnpkg --version', { stdio: 'ignore' });
+    return true;
+  } catch {
+    return false;
+  }
+}
+
+// Validate arguments
+if (process.argv.length < 3) {
+  console.log('Please specify the target project directory.');
+  console.log('For example:');
+  console.log('    npx create-nodejs-app my-app');
+  console.log('    OR');
+  console.log('    npm init nodejs-app my-app');
+  process.exit(1);
+}
+
+// Define constants
+const ownPath = process.cwd();
+const folderName = process.argv[2];
+const appPath = path.join(ownPath, folderName);
+const repo = 'https://github.com/hagopj13/node-express-mongoose-boilerplate.git';
+
+// Check if directory already exists
+try {
+  fs.mkdirSync(appPath);
+} catch (err) {
+  if (err.code === 'EEXIST') {
+    console.log('Directory already exists. Please choose another name for the project.');
+  } else {
+    console.log(error);
+  }
+  process.exit(1);
+}
+
+async function setup() {
+  try {
+    // Clone repo
+    console.log(`Downloading files from repo ${repo}`);
+    await runCmd(`git clone --depth 1 ${repo} ${folderName}`);
+    console.log('Cloned successfully.');
+    console.log('');
+
+    // Change directory
+    process.chdir(appPath);
+
+    // Install dependencies
+    const useYarn = await hasYarn();
+    console.log('Installing dependencies...');
+    if (useYarn) {
+      await runCmd('yarn install');
+    } else {
+      await runCmd('npm install');
+    }
+    console.log('Dependencies installed successfully.');
+    console.log();
+
+    // Copy envornment variables
+    fs.copyFileSync(path.join(appPath, '.env.example'), path.join(appPath, '.env'))
+    console.log('Environment files copied.');
+
+    // Delete .git folder
+    await runCmd('npx rimraf ./.git');
+
+    // Remove extra files
+    fs.unlinkSync(path.join(appPath, 'CHANGELOG.md'));
+    fs.unlinkSync(path.join(appPath, 'CODE_OF_CONDUCT.md'));
+    fs.unlinkSync(path.join(appPath, 'CONTRIBUTING.md'));
+    fs.unlinkSync(path.join(appPath, 'bin', 'createNodejsApp.js'));
+    fs.rmdirSync(path.join(appPath, 'bin'));
+    if (!useYarn) {
+      fs.unlinkSync(path.join(appPath, 'yarn.lock'));
+    }
+
+    console.log('Installation is now complete!');
+    console.log();
+
+    console.log('We suggest that you start by typing:');
+    console.log(`    cd ${folderName}`);
+    console.log(useYarn ? '    yarn dev' : '    npm run dev');
+    console.log();
+    console.log('Enjoy your production-ready Node.js app, which already supports a large number of ready-made features!');
+    console.log('Check README.md for more info.');
+  } catch (error) {
+    console.log(error);
+  }
+}
+
+setup();
diff --git a/package.json b/package.json
index ccf0f4e5..a081b2a8 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,8 @@
 {
-  "name": "node-express-mongoose-boilerplate",
+  "name": "create-nodejs-express-app",
   "version": "1.5.0",
   "description": "A boilerplate for building production-ready RESTful APIs using Node.js, Express, and Mongoose",
+  "bin": "bin/createNodejsApp.js",
   "main": "src/index.js",
   "repository": "https://github.com/hagopj13/node-express-mongoose-boilerplate.git",
   "author": "Hagop Jamkojian <hagopj13@gmail.com>",