import base64
from Custom import CustomBase
import API

class base64urlencode (CustomBase):
    stack = None
    
    def __init__(self, stack):
        self.stack = stack
    # __init__
    
    def help(self):
        # This needs the language files in %userprofile%\taRpnCalcSG\customFunctions.translations\
        API.showPopup('Custom function', API.t(API.programName+'.CustomFunctions.base64urlencode.btnHLP'), font=('Courier',API.helpFontSize))
    # help

    def calculate(self):
        if self.stack.inputMode != 'TEXT':
            # This needs the language files in %userprofile%\taRpnCalcSG\customFunctions.translations\
            API.toast(API.t(API.programName+'.CustomFunctions.onlySupportedInTEXT'))
            return
        if self.stack.finishEntry() == -1: 
            return # abort here because data in input line is invalid
        if self.stack.size() < 1:
            # This needs the language files in %userprofile%\taRpnCalcSG\customFunctions.translations\
            API.toast(API.t(API.programName+'.CustomFunctions.argumentsNeeded', count=1))
            return
        x = str(self.stack.getRegister(0))
        b64 = base64.urlsafe_b64encode(x.encode('utf-8'))
        self.stack.pop(1)
        self.stack.push(b64.decode('utf-8'))
    # calculate
    
# base64urlencode