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

doc = '\nThis is a one-period public goods game with 3 players.\n'
class Constants(BaseConstants):
    name_in_url = 'public_goods'
    players_per_group = 3
    num_rounds = 1
    endowment = c(100)
    multiplier = 2
    admin_report_template = 'public_goods/admin_report.html'
    instructions_template = 'public_goods/instructions.html'
def vars_for_admin_report(subsession):
    session = subsession.session
    contributions = [
        p.contribution for p in subsession.get_players() if p.contribution != None
    ]
    if contributions:
        return dict(
            avg_contribution=sum(contributions) / len(contributions),
            min_contribution=min(contributions),
            max_contribution=max(contributions),
        )
    else:
        return dict(
            avg_contribution='(no data)',
            min_contribution='(no data)',
            max_contribution='(no data)',
        )
class Subsession(BaseSubsession):
    vars_for_admin_report = vars_for_admin_report
def set_payoffs(group):
    group.total_contribution = sum([p.contribution for p in group.get_players()])
    group.individual_share = (
        group.total_contribution * Constants.multiplier / Constants.players_per_group
    )
    for p in group.get_players():
        p.payoff = (Constants.endowment - p.contribution) + group.individual_share
class Group(BaseGroup):
    total_contribution = models.CurrencyField()
    individual_share = models.CurrencyField()
    set_payoffs = set_payoffs
class Player(BasePlayer):
    contribution = models.CurrencyField(doc='The amount contributed by the player', max=Constants.endowment, min=0)