from ._builtin import Page, WaitPage
from .models import Constants


class Instructions(Page):
    pass


class Offer(Page):
    form_model = 'player'
    form_fields = ['offer']

    def before_next_page(self):
        self.player.kept = Constants.endowment - self.player.offer
        self.player.participant.vars['dictator_kept'] = self.player.kept
        self.player.participant.vars['dictator_offer'] = self.player.offer

page_sequence = \
    [Instructions,
    Offer,
    ]