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

doc = ''
class Constants(BaseConstants):
	name_in_url = 'my_public_goods'
	players_per_group = 3
	num_rounds = 1
	endowment = c(100)
	multiplier = 2
class Subsession(BaseSubsession):
	pass
class Group(BaseGroup):
	total_contribution = models.CurrencyField()
	individual_share = models.CurrencyField()
	def my_method(self):
		group = self.group
		players = group.get_players()
		contributions = [p.contribution for p in players]
		group.total_contribution = sum(contributions)
		group.individual_share = group.total_contribution * Constants.multiplier / Constants.players_per_group
		for p in players:
		    p.payoff = Constants.endowment - p.contribution + group.individual_share
		
class Player(BasePlayer):
	contribution = models.CurrencyField(label='What is your contribution?', max=Constants.endowment, min=0)