#To define a particular parameter, replace the 'parameterName' inside itsm.getParameter('parameterName') with that parameter's name
DownTo = itsm.getParameter('DownTo') #Here mention the path where the application to download
client_id = itsm.getParameter('client_id') #Please provide the AD client ID
client_secret = itsm.getParameter('client_secret') #Please provide the AD secret key
office_url = itsm.getParameter('office_url') #Please provide your office 365 domain eg. xxxxx.onmicrosoft.com
userPrincipalName = itsm.getParameter('User_Mail_Id') #Please provide the user mail id eg. xxxxx@xxxxx.onmicrosoft.com
onedrive_file_name = itsm.getParameter('file_name') #Please provide the sharepoint file name eg. xxxxx.doc

import ctypes
class disable_file_system_redirection:
    _disable = ctypes.windll.kernel32.Wow64DisableWow64FsRedirection
    _revert = ctypes.windll.kernel32.Wow64RevertWow64FsRedirection
    def __enter__(self):
        self.old_value = ctypes.c_long()
        self.success = self._disable(ctypes.byref(self.old_value))
    def __exit__(self, type, value, traceback):
        if self.success:
            self._revert(self.old_value)

import subprocess        
with disable_file_system_redirection(): 
    import urllib
import os

def downloadFile(DownTo, fromURL, Filename):
    try:
        fileName = Filename
        DownTo = os.path.join(DownTo, fileName)
        with open(DownTo, 'wb') as f:
            f.write(urllib.urlopen(fromURL).read())
        if os.path.isfile(DownTo):
            return '{} - {}KB'.format(DownTo, os.path.getsize(DownTo)/1000)
    except:
        return 'Please Check URL or Download Path!'
	
import json
import urllib2
def get_access_token():
    try:
        import urllib
        params = urllib.urlencode({ 'client_id': client_id, 'client_secret': client_secret,'resource': 'https://graph.microsoft.com','grant_type': 'client_credentials'})
        f = urllib.urlopen("https://login.microsoftonline.com/%s/oauth2/token"%(office_url), params)
        
        json_data = json.loads(f.read())
        data = json_data.get('access_token')
        return data
    except Exception as err :
        print err

def get_user_id():
    try:
        from urllib2 import urlopen, Request
        access_token = get_access_token()
        request = Request("https://graph.microsoft.com/v1.0/users")
        request.add_header('Authorization', 'Bearer %s' %(access_token))
        request.add_header('accept', 'application/json')
        request.add_header('grant_type', 'client_credentials')
        response = urlopen(request)
        json_data = json.loads(response.read())
        user_id = ''
        for rec in json_data.get('value'):
            if rec.get('userPrincipalName') == userPrincipalName:
                user_id = rec.get('id')
        data = user_id
        return {'user_id' : data, 'access_token' : access_token}
    except Exception as err :
        print err

def check_file_or_folder():
    try:
        from urllib2 import urlopen, Request
        get_acc_user_id = get_user_id()
        request = Request("https://graph.microsoft.com/v1.0/users/%s/drive/root:/%s"%(get_acc_user_id.get('user_id'), onedrive_file_name))
        request.add_header('Authorization', 'Bearer %s' % (get_acc_user_id.get('access_token')))
        request.add_header('accept', 'application/json')
        request.add_header('grant_type', 'client_credentials')
        response = urlopen(request)
        json_data = json.loads(response.read())
        #for record in json_data.get('value'):
        if json_data.get('@microsoft.graph.downloadUrl'):
            downloadFile(DownTo,json_data.get('@microsoft.graph.downloadUrl'), json_data.get('name'))
            print "File Downloaded"
    except Exception as err :
        print err                        

check_file_or_folder()