Add isURL validation for inputURL and outputURL in Models->urls.js using Validator,js.

{
"_id": "60b65180e14f372af0e298bb",
"inputURL": "https://somerandomurl.com/this-is-my-first-api-call-which-i-need-to-explain",
"inputText": "api-call",
"outputText": "localhost:3000/api-call",
"__v": 0
}

Add link validation middleware to the express, so that only valid links are stored

Add new feature to generate random Nano-Id

Example : If some one leaves blank the input phrase text field so the backend web API should generates the random Nano-Id and append that Id in the response body

{
"inputURL" : "https://somerandomurl.com/this-is-my-first-api-call-which-i-need-to-explain",
"inputText" : ""
}

Here we see the input text as blank so the post method should generate a Nano-ID (you can use nano id npm package) .

{
"_id": "60b65180e14f372af0e298bb",
"inputURL": "https://somerandomurl.com/this-is-my-first-api-call-which-i-need-to-explain",
"inputText": "IRFa-VaY2b",
"outputText": "localhost:3000/IRFa-VaY2b",
"__v": 0
}

Here we see input text get the random id of 10 digts