give me point pls

week04/contact-manager/index.js

-const lower = require("./logic")
+#!/usr/bin/env node
+//const lower = require("./logic"); // impport function
+const {addContact, getContact} = require("./logic"); 
 
-console.log(lower.toLower("PATIPHAN MARAK"))
+//console.log(lower.toLower("PATIPHAN MARAK"));
\ No newline at end of file
+
+const program = require('commander');
+
+program
+    .version('0.1.0')
+    .description('Contact management system');
+
+program
+    .command('addContact <firstame> <lastname> <phone> <email>')
+    .alias('a')
+    .description('Add a contact')
+    .action((firstname, lastname, phone, email) => {
+        //addContact({ firstname, lastname, phone, email });
+        console.log(`User : ${firstname} ${lastname} ${phone} ${email} `);
+    });
+
+program
+    .command('programmer')
+    .alias('p')
+    .description('programmer')
+    .action(() => {
+        console.log(`Programmer is Patiphan`);
+    });
+
+console.log(process.argv);
+//program.parse(process.argv); // พาสคำสั่ง 
\ No newline at end of file

week04/contact-manager/logic.js

-let lower = function toLower(v) {
+function toLower(v) {
     return v.toLowerCase();
-  }
-  exports.toLower = lower
+ };
+
+const mongoose = require('mongoose');
+// const assert = require('assert');
+mongoose.Promise = global.Promise;
+
+const db = mongoose.connect('mongodb://localhost:27017/contactdb');
+
+const contactSchema = mongoose.Schema({
+    firstname: {
+        type: String,
+        set: toLower
+    },
+    lastname: {
+        type: String,
+        set: toLower
+    },
+    phone: {
+        type: String,
+        set: toLower
+    },
+    email: {
+        type: String,
+        set: toLower
+    }
+});
+const Contact = mongoose.model('Contact', contactSchema);
+
+const addContact = (contact) => {
+    Contact.create(contact, (err) => {
+        console.info('New contact added');
+        db.disconnect();
+    });
+};
+
+const getContact = (name) => {
+    const search = new RegExp(name, 'i');
+    Contact.find({ $or: [{ firstname: search }, { lastname: search }] })
+        .exec((err, contact) => {
+            console.info(contact);
+            console.info(`ค้นเจอทั้งหมด ${contact.length} รายการ`);
+            db.disconnect();
+        });
+};
+
+// exports.toLower = lower;
+module.exports = { addContact, getContact };

week04/contact-manager/node_modules/contact-manager

+..
\ No newline at end of file

week04/contact-manager/package.json

@@ -5,6 +5,8 @@
   "main": "index.js",
   "author": "Patiphan",
   "license": "MIT",
+  "preferGlobal": true,
+  "bin": "./index.js",
   "dependencies": {
     "commander": "^2.14.0",
     "inquirer": "^5.1.0",

week04/contact-manager/use

+MongoDB shell version v3.6.2
+connecting to: mongodb://127.0.0.1:27017/-
+MongoDB server version: 3.6.2
+2018-02-07T21:45:05.859+0700 E -        [main] file [contactdb] doesn't exist
+failed to load: contactdb