#To define a particular parameter, replace the 'parameterName' inside itsm.getParameter('parameterName') with that parameter's name
ApplicationName='7-Zip'## Please Enter the Application Name here
ApplicationVersion='16.03'## Please enter the Version of the Application to Monitor here


import os
import sys

def alert(arg):
    sys.stderr.write("%d%d%d" % (arg, arg, arg))
    
## Check whether the app is installed
def CheckApp(AppName):
    import _winreg
    import os
    AppName = AppName.lower()
    def DNDS(rtkey, pK, kA):
        ln = []
        lv = []
        try:
            oK = _winreg.OpenKey(rtkey, pK, 0, kA)
            i = 0
            while True:
                try:
                    bkey = _winreg.EnumKey(oK, i)
                    vkey = os.path.join(pK, bkey)
                    oK1 = _winreg.OpenKey(rtkey, vkey, 0, kA)
                    try:
                        tls = []
                        DN, bla = _winreg.QueryValueEx(oK1, 'DisplayName')
                        DV, bla = _winreg.QueryValueEx(oK1, 'DisplayVersion')
                        _winreg.CloseKey(oK1)
                        ln.append(DN)
                        lv.append(DV)
                    except:
                        pass
                    i += 1
                except:
                    break
            _winreg.CloseKey(oK)
            return zip(ln, lv)
        except:
            return zip(ln, lv)

    rK = _winreg.HKEY_LOCAL_MACHINE
    sK = r'SYSTEM\CurrentControlSet\Control\Session Manager\Environment'
    openedKey = _winreg.OpenKey(rK, sK, 0, _winreg.KEY_READ)
    arch, bla = _winreg.QueryValueEx(openedKey, 'PROCESSOR_ARCHITECTURE')
    arch = str(arch)
    _winreg.CloseKey(openedKey)

    if arch == 'AMD64':
        fList = DNDS(_winreg.HKEY_LOCAL_MACHINE, r'SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall', _winreg.KEY_WOW64_32KEY | _winreg.KEY_READ)
        fList.extend(DNDS(_winreg.HKEY_LOCAL_MACHINE, r'SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall', _winreg.KEY_WOW64_64KEY | _winreg.KEY_READ))
        fList.extend(DNDS(_winreg.HKEY_CURRENT_USER, r'SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall', _winreg.KEY_WOW64_32KEY | _winreg.KEY_READ))
        fList.extend(DNDS(_winreg.HKEY_CURRENT_USER, r'SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall', _winreg.KEY_WOW64_64KEY | _winreg.KEY_READ))
    else:
        fList = DNDS(_winreg.HKEY_LOCAL_MACHINE, r'SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall', _winreg.KEY_READ)
        fList.extend(DNDS(_winreg.HKEY_CURRENT_USER, r'SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall', _winreg.KEY_READ))
    fList = set(fList)

    lr = []
    rs = 0
    for i in fList:
        a, b = i
        if AppName in a.lower():
            ver.append(b)
            lr.append('success: {} is installed'.format(a))
            lr.append('{:<25}{:5}'.format(a, b))
            rs += 1
        else:
            rs += 0
    if rs:
        return True
        
    return False

ver=[]

if CheckApp(ApplicationName):
    print ApplicationName+' is installed'
    if ver:
        if ver[0] == ApplicationVersion:
            print "Application Version Not Changed"
            alert(0)
        else:
            print "Application Version has Changed"
            alert(1)
    else:
        pass
else:
    print ApplicationName+' is not installed'
    alert(0)