Google Drive - Upload File

GoogleDriveUploadFile.swift

func uploadFile(
    name: String,
    folderID: String,
    fileURL: URL,
    mimeType: String,
    service: GTLRDriveService) {
    
    let file = GTLRDrive_File()
    file.name = name
    file.parents = [folderID]
    
    // Optionally, GTLRUploadParameters can also be created with a Data object.
    let uploadParameters = GTLRUploadParameters(fileURL: fileURL, mimeType: mimeType)
    
    let query = GTLRDriveQuery_FilesCreate.query(withObject: file, uploadParameters: uploadParameters)
    
    service.uploadProgressBlock = { _, totalBytesUploaded, totalBytesExpectedToUpload in
        // This block is called multiple times during upload and can
        // be used to update a progress indicator visible to the user.
    }
    
    service.executeQuery(query) { (_, result, error) in
        guard error == nil else {
            fatalError(error!.localizedDescription)
        }
        
        // Successful upload if no error is returned.
    }
}