Issue with retrieving metadata of file

Hi,

I'm using the Node.js SDK to interact with the Box API. I'm having an issue with consistency when retrieving metadata for a file.

The code snippet is at the bottom (I removed some code while making this post for privacy reasons, but I assure that it runs just fine). All it's doing is listening to events, and for any event of type ITEM_UPLOAD, it gets some string from the metadata and does some subsequent operations based on the string. For some reason, though, printing the metadata object in

const metadata = await client.files.getAllMetadata(event.source.id)

will return a file with no metadata, a file with just the name of the metadata template, OR a file with the name of the metadata template and the appropriate metadata (e.g., a "topicAreasCovered" attribute as part of the object). I'm not sure why it's inconsistent. The only way I've found to resolve this is adding a sleep command in the form of

await new Promise(r => setTimeout(r, 5000))

before trying to get the metadata. This returns all of the metadata just fine, but I'm not a fan of this solution.

Any help is appreciated.

Code snippet:

client.events.getEventStream((err, stream) => {
    if (err) {
        console.log(err)
    }

    // handle the event
    stream.on('data', async (event) => {
        switch (event.event_type) {
            case 'ITEM_UPLOAD' : {
                console.log(`file upload [${event.source.id}: ${event.source.name}] by ${event.created_by.name} at ${event.created_at}`)

                //PROBLEM HERE------------------------------------
                const metadata = await client.files.getMetadata(event.source.id, client.metadata.scopes.ENTERPRISE, METADATA_TEMPLATE)
                //------------------------------------------------
                const topic = metadata.topicAreasCovered[0]
                const itemsInFolder = (await client.folders.getItems(
                        OUTPUT_FOLDER_ID,
                        {
                            usemarker: 'false',
                            fields: 'name',
                            offset: 0,
                            limit: 25
                        })
                ).entries
                let folderExists = false
                let folder

                for (const item of itemsInFolder) {
                    folderExists = item.type === 'folder' && item.name === topic
                    if (folderExists) {
                        break
                    }
                }

                if (folderExists) {
                    folder = await client.folders.get(item.id)
                } else {
                    folder = await client.folders.create(OUTPUT_FOLDER_ID, topic, () => console.log(`folder ${topic} created`))
                }

                await client.files.move(event.source.id, folder.id, () => console.log(`file ${event.source.name} moved to folder ${folder.name}`))
                break
            }
            default: {
                console.log('non file upload event occurred: ', event.event_type)
                break
            }
        }
    })
})