"""Script to fix up our MSI files """

import argparse;
import msilib
import shutil;

parser = argparse.ArgumentParser(description='Trim MSI.')
parser.add_argument('file', type=argparse.FileType('r'), help='file to trim')
parser.add_argument('out', type=argparse.FileType('w'), help='file to output to')

args = parser.parse_args()

def exec_delete(query):
    view = db.OpenView(query)
    view.Execute(None)

    cur_record = view.Fetch()
    view.Modify(msilib.MSIMODIFY_DELETE, cur_record)
    view.Close()


def exec_update(query, column, value):
    view = db.OpenView(query)
    view.Execute(None)

    cur_record = view.Fetch()
    cur_record.SetString(column, value)
    view.Modify(msilib.MSIMODIFY_REPLACE, cur_record)
    view.Close()


print "Trimming MSI"

db = msilib.OpenDatabase(args.file.name, msilib.MSIDBOPEN_DIRECT)

exec_delete("select * from ControlEvent WHERE Dialog_ = 'LicenseAgreementDlg' AND Control_ = 'Next' AND Event = 'NewDialog' AND Argument = 'CustomizeDlg'")
exec_delete("select * from ControlEvent WHERE Dialog_ = 'CustomizeDlg' AND Control_ = 'Back' AND Event = 'NewDialog' AND Argument = 'LicenseAgreementDlg'")

exec_update("select * from ControlEvent WHERE Dialog_ = 'VerifyReadyDlg' AND Control_ = 'Back' AND Event = 'NewDialog' AND Argument = 'CustomizeDlg'", 5, "WixUI_InstallMode = \"InstallCustom\"")

db.Commit()

shutil.copyfile(args.file.name, args.out.name);