import os
from subprocess import PIPE, Popen
import ctypes
import ssl
import urllib2
import datetime
import time
import re

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)
            
with disable_file_system_redirection():
    arch=os.popen("wmic os get OSArchitecture").read()

if '64' in arch:
    url="https://script-downloads.itarian.com/sumatrapdf_files/64bit/SumatraPDF-3.4.6-64-install.exe"
else:
    url="https://script-downloads.itarian.com/sumatrapdf_files/32bit/SumatraPDF-3.4.6-install.exe"
    

Down_path=os.environ['TEMP']
fileName = url.split('/')[-1]
DownTo = os.path.join(Down_path, fileName)


def ecmd(command):   
    from subprocess import Popen, PIPE
    import ctypes
    
    with disable_file_system_redirection():
        obj = Popen(command, shell = True, stdout = PIPE, stderr = PIPE)
    out, err = obj.communicate()
    ret=obj.returncode
    if ret==0:
        if out:
            return out.strip()
        else:
            return ret
    else:
        if err:
            return err.strip()
        else:
            return ret

def downloadFile(DownTo, fromURL):
    headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36'}
    context = ssl._create_unverified_context()
    request = urllib2.Request(fromURL, headers=headers)
    req = urllib2.urlopen(request,context=context)
    try:
        with open(DownTo, 'wb') as f:
            while True:
                chunk = req.read(100*1000*1000)
                if chunk:
                    f.write(chunk)
                else:
                    break
        if os.path.isfile(DownTo):
            return '{} - {}KB'.format(DownTo, os.path.getsize(DownTo)/1024)
		
    except:
        return 'Please Check URL or Download Path!'
        
usremovebatch = """
RD /S /Q "C:\Users\%s\AppData\Local\SumatraPDF"
del "C:\Users\%s\Desktop\SumatraPDF.lnk" /s /q
del "C:\Users\%s\AppData\Roaming\Microsoft\Windows\Start Menu\SumatraPDF.lnk" /s /q
reg delete "HKEY_USERS\%s\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SumatraPDF" /f
"""

def spm_install(dir, args):
    with disable_file_system_redirection():  
        print(downloadFile(DownTo, url))
        print(ecmd('%s -s -d "C:\Program Files\SumatraPDF" -all-users'%(DownTo)))
        os.remove(DownTo)

def spm_uninstall(dir, args):
    with disable_file_system_redirection():
        print(ecmd('"%ProgramFiles%\SumatraPDF\SumatraPDF.exe" -uninstall -s'))

def spm_update(dir, args):
    with disable_file_system_redirection():
        userout = os.popen('query user').read()
        username = re.findall("(.*)Active",userout)[0].split()[0]
        if os.path.exists("C:\Users\%s\AppData\Local\SumatraPDF\SumatraPDF.exe"%(username)):
            sid = os.popen("wmic useraccount where name=\"%s\" get sid"%(username)).read().splitlines()[1].strip()
            batch_name = 'batch_file.bat'
            batch_path=os.path.join(os.environ['TEMP'], batch_name)
            with open(batch_path, 'wb') as wr:
                wr.write(usremovebatch%(username,username,username,sid))
            print(ecmd(batch_path))
            os.remove(batch_path)
        if os.path.exists("C:\Program Files\SumatraPDF\SumatraPDF.exe"):
            spm_uninstall(None, None)
        time.sleep(20)
        spm_install(None, None)