How to delete files with NodeJS? [duplicate] - node.js

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node.js remove file
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I have two async functions:
One for creating objects in PostgreSQL and upload files with named in this object.
Another one for deleting this entity and deleting files from folder.
I don't know how to extract filenames from PostgreSQL entity and delete certain files in my 'static' folder
Entity in PostgreSQL looks like:
Car:
{
'name': 'Nissan 350Z',
'description': 'new',
'image': '123wejdsefberfkj.jpg',
'video': '23rusdjf8ioysdfs.mp4'
}
Create function:
Here I get files from form-data, create unique name for files and save it in PostgreSQL, then I save files in "static" folder.
let videoName = uuid.v4() + '.mp4';
let imageName = uuid.v4() + '.jpg';
let {name,description} = req.body;
const {video, image} = req.files;
const car = await Car.create( {name, description, video: videoName,image: imageName})
.then(video.mv(path.resolve(__dirname,'..', 'static', videoName)))
.then(image.mv(path.resolve(__dirname,'..', 'static', imgName)))
Delete function:
Here I need to extract file-names from database and delete them from folder
a bit pseudocode:
async delete(req, res) {
try {
const {id} = req.params;
await Car.findOne({where:{id}})
.then( async data => {
if(data) {
await let videoName = Car.#extract_video_name# ({where: {id}})
.then(mv(path.delete(__dirname,'..','static',videoName)))
await Car.destroy({where:{id}}).then(() => {
return res.json("Car deleted");
})
} else {
return res.json("This Car doesn't exist in database");
}
})
} catch (e) {
console.error(e)
}
}

Answer 1

You can use fs, require it using const fs = require('fs');
You have no npm package to install, it's included in node.js.
This is the code that allows you to save your files into a directory by creating the folder if it doesn't exist and upload the file into it
let path = String(`./directoryName/${fileName}`);
fs.mkdirSync('./directoryName', { recursive: true });
fs.writeFileSync(path, data);
And you can delete the file using
fs.unlink(path, (err) => {
if (err) throw err //handle your error the way you want to;
console.log('path/file.txt was deleted');//or else the file will be deleted
});
);
Refernce : https://nodejs.org/api/fs.html