import ctypes
import os
import subprocess


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)


def ExecuteCmd(cmd):
    with disable_file_system_redirection():
        obj = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
        out, err = obj.communicate()
        ret = obj.returncode
        if err != '':
            return err
        elif out != '':
            return out
        else:
            return ret


def uninstall(path, CMD):
    if os.path.exists(path + r'\Uninstall.exe'):
        if not ExecuteCmd(CMD):
            print "Belarc Advisor Removed"
    else:
        print "Belarc Advisor Uninstall.exe dose not exists"


def BelarcAdvisor():
    pathA = r'C:\Program Files (x86)\Belarc\BelarcAdvisor'
    pathB = r'C:\Program Files\Belarc\BelarcAdvisor'
    CMDA = r'"%ProgramFiles(x86)%\Belarc\BelarcAdvisor\Uninstall.exe" /S "C:\Program Files (' \
           r'x86)\Belarc\BelarcAdvisor\INSTALL.LOG" '
    CMDB = r'"%ProgramFiles%\Belarc\BelarcAdvisor\Uninstall.exe" /S "C:\Program Files (' \
           r'x86)\Belarc\BelarcAdvisor\INSTALL.LOG" '

    if os.path.exists(pathA):
        uninstall(pathA, CMDA)
    elif os.path.exists(pathB):
        uninstall(pathB, CMDB)
    else:
        print "Belarc Advisor does not exists"


BelarcAdvisor()