k4ever/client-barcode/freitagslib/commands.py

#! /usr/bin/env python
# -*- coding: utf-8 -*-
#
# Copyright (C) 2011 Sebastian Pipping <sebastian@pipping.org>
# Licensed under GPL v3 or later

import freitagslib.network as net
from freitagslib.network import ITEM_ONLY, DEPOSIT_ONLY


class Command(object):
	def difference(self):
		return self._difference


class DepositCommand(Command):
	def __init__(self, amount):
		self._difference = amount

	def run(self, user_name):
		net.deposit(self._difference, net.DEPOSIT_CASH, user_name)

	def label(self):
		return '%.2f Euro einzahlen' % self._difference


class _ItemBasedCommand(Command):
	def __init__(self, item):
		self._item = item

	def item(self):
		return self._item


class BuyCommand(_ItemBasedCommand):
	def __init__(self, item):
		super(BuyCommand, self).__init__(item)
		self._difference = -item.price
		self._to_go = False  ## TODO session state, instead?

	def run(self, user_name):
		net.buy_item(self._item.id, what_about_it=ITEM_ONLY, user_name=user_name)

	def label(self):
		return self._item.name

	def is_to_go(self):
		return self._to_go

	def set_to_go(self, to_go):
		self._to_go = to_go

	def deposit(self):
		return self._item.deposit


class ToGoCommand(_ItemBasedCommand):
	def __init__(self, item):
		super(ToGoCommand, self).__init__(item)
		self._difference = -item.deposit

	def run(self, user_name):
		net.buy_item(self._item.id, what_about_it=DEPOSIT_ONLY, user_name=user_name)

	def label(self):
		return '%s Pfand' % self._item.name