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


class Constants(BaseConstants):
    name_in_url = 'public_goods_simple'
    players_per_group = 3
    num_rounds = 3
    endowment = c(10)
    multiplier = 2

    def round_numbers(self):
        return range(1, self.num_rounds + 1)


class Subsession(BaseSubsession):
    pass

class PublicGoodsGame(models):
    num_rounds = models.PositiveIntegerField(default=5)
    contribution = models.CurrencyField()
    total_contribution = models.CurrencyField()

    def round_numbers(self):
        return range(1, self.num_rounds+1)


class Group(BaseGroup):
    total_contribution = models.CurrencyField()
    individual_share = models.CurrencyField()

    def set_payoffs(self):
        self.total_contribution = sum([p.contribution for p in self.get_players()])
        self.individual_share = self.total_contribution * Constants.multiplier / Constants.players_per_group
        for p in self.get_players():
            p.payoff = p.contribution + self.individual_share


class Player(BasePlayer):
    contribution = models.CurrencyField(min=0, max=Constants.endowment)
    payoff = models.CurrencyField()

    def set_payoffs(self):
        self.payoff = Constants.endowment - self.contribution + self.group.individual_share

    @property
    def average_contribution(self):
        contributions = [p.contribution for p in self.in_all_rounds()]
        return sum(contributions) / len(contributions)