from otree.api import (
    models,
    widgets,
    BaseConstants,
    BaseSubsession,
    BaseGroup,
    BasePlayer,
    Currency as c,
    currency_range,
)


doc = """
trust trust
"""


class Constants(BaseConstants):
    name_in_url = 'trust_trust'
    players_per_group = 2
    num_rounds = 1

    endowment = c(30)
    multiplier = 2

    instructions_template = 'trust_trust/instructions.html'


class Subsession(BaseSubsession):
    pass


class Group(BaseGroup):
    sent_amount = models.CurrencyField(
        min=c(0),
        max=Constants.endowment,
        doc="""Amount sent by P1""",
        label="How much do you want to send to participant B?",
    )

    sent_back_amount = models.CurrencyField(
        #choices=[0, sent_amount],
        #max=sent_amount * Constants.multiplier,
        doc="""Amount sent back by P2""", label="How much do you want to send back?"
    )

    def sent_back_amount_choices(self):
        """ return currency_range(c(0), self.sent_amount * Constants.multiplier, c(1)) """ 
        choices = [c(0), self.sent_amount * Constants.multiplier]
        return choices

    def set_payoffs(self):
        p1 = self.get_player_by_id(1)
        p2 = self.get_player_by_id(2)
        p1.payoff = Constants.endowment - self.sent_amount + self.sent_back_amount
        p2.payoff = self.sent_amount * Constants.multiplier - self.sent_back_amount


class Player(BasePlayer):
    pass