from otree.api import *


class C(BaseConstants):
    NAME_IN_URL = 'dictator'
    PLAYERS_PER_GROUP = None
    NUM_ROUNDS = 1
    ENDOWMENT = 90


class Subsession(BaseSubsession):
    pass


class Group(BaseGroup):
    pass


class Player(BasePlayer):
    amount_given = models.IntegerField(
        min=0,
        max=100,
        label='',
    )


#PAGES
class Instructions(Page):
    pass


class Decision(Page):
    form_model  = 'player'
    form_fields = ['amount_given']

    @staticmethod
    def before_next_page(player, timeout_happened):
        player.participant.vars['dictator_payoff'] = 90 - player.amount_given


page_sequence = [Instructions, Decision]