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


author = 'Your name here'

doc = """
Your app description
"""


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

    endowment= c(10)
    multiplication_factor=3


class Subsession(BaseSubsession):
    pass


class Group(BaseGroup):
    sent_amount=models.CurrencyField(
        label="How much do you want to send to participant B?"
    )
    sent_back_amount=models.CurrencyField(
        label=" How much do you want to send back?"
    )

    def sent_back_amount_choices(self):
        return currency_range(
            c(0),
            self.sent_amount*Constants.multiplication_factor,
            c(1)
        )
    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.multiplication_factor-self.sent_back_amount

class Player(BasePlayer):
    sent_amount= models.CurrencyField()
    sent_back_amount=models.CurrencyField()