import os
import subprocess

# dir: string -> directory where installer exist
# args: string -> which includes all parameters with space delimiter
def spm_install(dir, args):
    os.chdir(dir)
    argslist = args.split()
    try:
        subprocess.check_call(argslist)
        print 'retcode' + str(0) + 'retcode'
    except subprocess.CalledProcessError as e:
        print 'retcode' + str(e.returncode) + 'retcode'

# dir: string -> directory where installer exist
# args: string -> which includes all parameters with space delimiter
def spm_uninstall(dir, args):
    os.chdir(dir)
    
    argslist = args.split()
    try:
        subprocess.check_call(argslist)
        print 'retcode' + str(0) + 'retcode'
    except subprocess.CalledProcessError as e:
        print 'retcode' + str(e.returncode) + 'retcode'

# dir: string -> directory where installer exist
# args: string -> which includes all parameters with space delimiter
def spm_update(dir, args):
    #It uninstalls the older version which will match with the registry
    unins=["Bing Desktop"]
    import re
    import _winreg
    blacklist=[]
    for i in unins:    
        blacklist.append(i)  
    uninstallkey='SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall'

    if 'PROGRAMFILES(X86)' in os.environ.keys():
        reg_list=[(_winreg.HKEY_LOCAL_MACHINE,uninstallkey,_winreg.KEY_WOW64_32KEY | _winreg.KEY_READ),
                (_winreg.HKEY_LOCAL_MACHINE,uninstallkey,_winreg.KEY_WOW64_64KEY | _winreg.KEY_READ),
                (_winreg.HKEY_CURRENT_USER,uninstallkey,_winreg.KEY_WOW64_32KEY | _winreg.KEY_READ),
                (_winreg.HKEY_CURRENT_USER,uninstallkey,_winreg.KEY_WOW64_64KEY | _winreg.KEY_READ)]
        
    else:
        
        reg_list=[(_winreg.HKEY_LOCAL_MACHINE,uninstallkey,_winreg.KEY_READ),
                (_winreg.HKEY_CURRENT_USER,uninstallkey,_winreg.KEY_READ)]
    strun=[]
    list=[]
    for i in reg_list:
        reg_key=i[0]
        sub_key=i[1]
        Value=i[2]
        reg= _winreg.OpenKey(i[0],i[1],0,i[2])
        i=0
        while True:
            try:
                key_value=_winreg.EnumKey(reg,i)
                path=os.path.join(sub_key,key_value)
                Hkey=_winreg.OpenKey(reg_key,path,0,Value)
                try:
                    key,dis_name=_winreg.QueryValueEx(Hkey,'DisplayName')
                    inlist=[key.strip(), path, sub_key]
                    list.append(inlist)
                except:
                    pass
                i+=1
            except:
                break
    for c in list:
        for i in range(0,len(blacklist)):
            if blacklist[i] in c[0]:
                strun.append(c[1])
                Uninstr=re.findall('{.*}',c[1])
                unin_str=''.join(Uninstr)
                command="MsiExec.exe /X"+unin_str+" /Q"
                unarglist2 = command.split()
        
                try:
                    subprocess.check_call(unarglist2)
                    print blacklist[i] +'older Version are removed'
                except subprocess.CalledProcessError as e:
                    print blacklist[i] +'older Version  does not exist, uninstaller returncode:' + str(e.returncode);
    os.chdir(dir)
    argslist = args.split()
    try:
        subprocess.check_call(argslist)
        print 'retcode' + str(0) + 'retcode'
    except subprocess.CalledProcessError as e:
        print 'retcode' + str(e.returncode) + 'retcode'