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


author = 'Your name here'

doc = """
Your app description
"""


class Constants(BaseConstants):
    name_in_url = 'closing'
    players_per_group = None
    num_rounds = 1

    rounding = 0.25
    ExpD_to_USD = 50
    payoff_message = "In today's activity, you earned %d Credits, which equals %.2f U.S. Dollars. We will pay this amount to you in cash"
    donations_message = "In today's activity, you generated $%d USD in donations. We will send this money directly to the charities that you selected."

class Subsession(BaseSubsession):
    pass

class Group(BaseGroup):
    pass

class Player(BasePlayer):
    def get_payoff_message(self):
        exp_payoff = self.participant.payoff
        conversion = exp_payoff / Constants.ExpD_to_USD
        usd_payoff = conversion + ((math.ceil(conversion) - conversion) % Constants.rounding)
        return Constants.payoff_message % (exp_payoff, usd_payoff)

    def get_donations_message(self):
        return Constants.donations_message % (self.participant.vars['donations'])