Extract Public Id From Cloudinary URL - node.js

Question

I am using Cloudinary to host my media on the cloud for my NodeJS project.
To delete an image from the Clodinary Cloud, I need to pass a Public Id for that image, to the Cloudinary API.
I realised, Public ID is embedded into the url, how to I extract it out from the URL?
Because, I don't want to store my data in this format :
image : {
url : `http://res.cloudinary.com/cloud_name/image/upload/v1647610701/rsorl4rtziefw46fllvh.png`,
publicId : `rsorl4rtziefw46fllvh`
}
Rather, I find it better to store it like this :
image : `http://res.cloudinary.com/cloud_name/image/upload/v1647610701/rsorl4rtziefw46fllvh.png`

Answer 1

The solution to this problem is to implement a funciton which extracts the publicId for every URL passed in as argument.
Here's the function :
const getPublicId = (imageURL) => imageURL.split("/").pop().split(".")[0];
Edited after #loic-vdb 's suggestion
Explanation :
It splits the string in an array using "/" as seperator.
imageURL="http://res.cloudinary.com/cloud_name/image/upload/v1647610701/rsorl4rtziefw46fllvh.png";
becomes,
imageURL = [ 'http:',
'',
'res.cloudinary.com',
'cloud_name',
'image',
'upload',
'v1647610701',
'rsorl4rtziefw46fllvh.png' ]
Next, pop the array (returns the last element of the array)
imageURL = 'rsorl4rtziefw46fllvh.png';
Now, split this string into array using "." as seperator, we get :
imageURL = [ 'rsorl4rtziefw46fllvh', 'png' ]
Finally select the 0th element that is our PublicId return that
imageURL = 'rsorl4rtziefw46fllvh';

Answer 2

Based on the answer by a Cloudinary support team member
... the public_id contains all folders and the last part of the public_id is the filename.
Here is what I tried and worked
const path = require("path");
const getPublicId = (imageURL) => {
const [, publicIdWithExtensionName] = imageURL.split("upload/");
const extensionName = path.extname(publicIdWithExtensionName)
const publicId = publicIdWithExtensionName.replace(extensionName, "")
return publicId
};
especially for cases where you store your assets in folders