Upload to Box using file request URL

BoxUploader.py

import datetime
import requests
import urllib
import os.path
import sys
import json

#
# Given a "File Request URL" and a local file, this program uploads to a box folder.
#
class BoxUploader(object) : 

  def __init__(self, requestURL) :
    self.request_url = requestURL
    o = urllib.parse.urlparse(requestURL) 
    
    self.boxDomain = o.hostname
    self.fileRequestId = os.path.basename(o.path)

    self.initialUrl = 'https://' + self.boxDomain + '/app-api/file-request-web/public/file-request?urlId=' + self.fileRequestId
    self.formResponseUrl = 'https://' + self.boxDomain + '/app-api/file-request-web/public/form-response'
    self.optionsUrl      = 'https://' + self.boxDomain + '/api/2.1/files/content'

  def upload_file(self, fname) : 
    #
    # Initial call to the "get" url
    #
    rfc3339_format='%Y-%m-%dT%H:%M:%S%z'
    response = requests.get(self.initialUrl)
    jsonResponse = response.json()
    basename = os.path.basename(fname)
    local_timezone= datetime.datetime.now(datetime.timezone.utc).astimezone().tzinfo
    modifiedTime = datetime.datetime.fromtimestamp(os.path.getmtime(fname), tz=local_timezone)

    #
    # Submit a form response to get an upload token
    #
    boxFileRequestId = jsonResponse['id']
    boxFolderId      = jsonResponse['folder']['id']
    formVersionId    = jsonResponse['form']['versionId']
    fileLength = os.path.getsize(fname)
    print("Form Version ID: " + formVersionId)
    requestContent = { "fileRequestURL" : self.fileRequestId,
                       "formVersionId"  : formVersionId,
                       "values"         : {"element-0" : { "type":"files", "data":[ {"local_path":fname, "size":fileLength}] },
                                           "folder"    : {"type" : "folder", "id": boxFolderId}}}
    uploadFormResponse = requests.post(self.formResponseUrl, json=requestContent)
    uploadFormResponseJson = uploadFormResponse.json()

    #
    # Make a call to the options url to get the actual url to
    # upload the file to.
    #
    uploadToken = uploadFormResponseJson['uploadToken']
    headers     = { "Authorization" : "Bearer " + uploadToken }
    requestContent = { "name" : fname,
                       "parent": { "id" : boxFolderId },
                       "size": fileLength}
    optionsResponse = requests.options(self.optionsUrl, headers=headers, json=requestContent)
    optionsResponseJson = optionsResponse.json() 


    # Upload the file.
    upload_url = optionsResponseJson['upload_url']
    form_attributes = { 'name' : fname, 
                        'parent': {"id": boxFolderId},
                        'content_modified_at' : modifiedTime.strftime(rfc3339_format) } 
    files={ 'attributes' : (None, json.dumps(form_attributes), 'application/json', {'Content-Disposition':'form-data'}), 
            'file'       : (fname, open(fname, 'rb')) }
    #upload_request = requests.Request('POST', upload_url, headers=headers, files=files).prepare()
    #print(upload_request.headers)
    #print(upload_request.body) 
    uploadResponse = requests.post(upload_url, headers=headers, files=files)
    print(json.dumps(uploadResponse.json(), indent=2))


def main(requestUrl, file) : 
  uploader = BoxUploader(requestUrl)
  uploader.upload_file(file)

if __name__ == '__main__' : 
  url = sys.argv[1]
  file = sys.argv[2]
  main(url, file)