Javascript example of deleting a shadow drive file

delete-file.js

import bs58 from 'bs58'
import nacl from 'tweetnacl'

// `storageAccount` is the string representation of a storage account pubkey
// `url` is the link to the shadow drive file, just like the previous implementation needed the url input
const message = `Shadow Drive Signed Message:\nStorageAccount: ${storageAccount}\nFile to delete: ${url}`
// Expect the final message string to look something like this if you were to output it
// Shadow Drive Signed Message:
// Storage Acount: ABC123
// File to delete: https://shadow-drive.genesysgo.net/ABC123/file.png

// If the message is not formatted like above exactly, it will fail message signature verification
// on the Shadow Drive Network side.
const encodedMessage = new TextEncoder().encode(message);
// Uses https://github.com/dchest/tweetnacl-js to sign the message. If it's not signed in the same manor,
// the message will fail signature verification on the Shadow Network side.
// This will return a base58 byte array of the signature.
const signedMessage = nacl.sign.detached(encodedMessage, keypair.secretKey);
// Convert the byte array to a bs58-encoded string
const signature = bs58.encode(signedMessage)
const deleteRequestBody = {
    signer: keypair.publicKey.toString(),
    message: signature,
    location: options.url
}
const deleteRequest = await fetch(`${SHDW_DRIVE_ENDPOINT}/delete-file`, {
    method: "POST",
    headers: {
        "Content-Type": "application/json"
    },
    body: JSON.stringify(deleteRequestBody)
})