Node Helper Functions.

Maximum Marks - 20

✅ able to submit the application - 1 mark (minimum score)
✅ Should print the IP address of the given websitename - 2.5 mark
✅ Should print the IP address of the given url - 2.5 mark
✅ Should print the Error message if invalid url or websitename - 2 marks
✅ should create a file  append content to that file - 2 mark
✅ should able to read content of tha file  - 2 mark
✅ should able to delete a file  - 2 mark
✅ should print the Error message if invalid path find (Reading file) - 2 mark
✅ should print the Error message if invalid path find (Deleting file) - 2 mark
✅ should able to use third party library called cowsay  - 2 mark

Create a Node.js program that allows for basic file manipulation and dns.The program should take command line arguments to specify the desired operation (command for the particular operation are given in "()" , use those commands only ):

 - getIP ( gip )
 - writeToFile ( wf )
 - readAFile ( rf )
 - deleteAFile ( df )
 - makeCowSay ( mcw )

To run any of these functions, the user needs to pass a specific keyword and the required parameters while running the index.js file.

for example, node index.js gip masaischool.com should print an array of IP address of masaischool.com. node index.js wf test.txt "hello" should write "hello" to test.txt file. node index.js df test.txt should delete the test.txt file. and so on...

Installation

you can use any node version that works for you ( 14+ )
please make sure you do not push package-lock.json

npm install

// complete functions 

// test locally
npm run test

Test Cases

Write the following 5 functions in the helper_functions.js and export them.

import all functions from helper_functions.js to index.js.

a) Function to accept a website name and prints (not return) an IP address of it.

Name this function as "getIP".
Should accept a single parameter "website_name".
Should print(not return) the array IP address of the given website("IP address is {array of adresses}).
on Error print message ("Websitename or Url is invalid.")
Hint : Refer "dns" module of Node.

b) Function to write the given content to the given filename.

Name this function as "writeToFile".
Should accept two parameters, "filename" and "content".
Should write the passed content to the passed filename, Asynchronously.
Should print(not return) the content which was successfully written in the given filename.
Hint : Refer "fs" module of Node.

c) Function to read the content from the given filename.

Name this function as "readAFile".
Should accept a single parameter "filename".
Should read the content from the passed filename, Asynchronously.
Should print(not return) the read content.
on error print message("No such file or directory found.")
Hint : Refer "fs" module of Node.

d) Function to delete a file of the given filename.

Name this function as "deleteAFile".
Should accept a single parameter "filename".
Should delete a file of the given filename, Asynchronously on successful delete Should print(not return) the message ("File {filename} is deleted.");
on error print message("No such file to Delete.")
Hint : Refer "fs" module of Node.

e) Function to make a cow(yes, a cow) say the passed content.

Name this function as "makeCowSay".
Should accept a single parameter "content".
Should make the cow say the passed "content".
Should print(not return) the return value of say method with the passed content.
Hint : You need to search, install and use a package called "cowsay" from npm.

Evaluation Criteria

Correct implementation of the mathematical operations
Proper handling of command line arguments
Proper implementation of random number generation
Proper handling of edge cases
Code readability and organization
Comments explaining the logic behind each step

General guidelines

The system on cp.masaischool.com may take between 1-20 minutes for responding,
so we request you to read the problem carefully and debug it before itself
we also request you not just submit it last minute
try to keep one submission at a time

eraltafs/nearlikes