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

from django.db import models as djmodels

author = "Philip Chapkovski, chapkovski@gmail.com"

doc = """
Public Good Game with Punishment (Fehr and Gaechter).
Fehr, E. and Gachter, S., 2000.
 Cooperation and punishment in public goods experiments. American Economic Review, 90(4), pp.980-994.
"""


class Constants(BaseConstants):
    name_in_url = 'pggfg'
    players_per_group = 3
    num_others_per_group = players_per_group - 1
    num_rounds = 2
    instructions_template = 'pggfg/Instructions.html'
    endowment = 20
    efficiency_factor = 1.6
    punishment_endowment = 10
    punishment_factor = 3


from django.db.models import Q, F


class Subsession(BaseSubsession):
    def creating_session(self):
        ps = []
        for p in self.get_players():
            for o in p.get_others_in_group():
                ps.append(Punishment(sender=p, receiver=o, ))
        Punishment.objects.bulk_create(ps)


class Group(BaseGroup):
    total_contribution = models.IntegerField()
    average_contribution = models.FloatField()
    individual_share = models.FloatField()
#    individual_share = models.CurrencyField()
    min_contribution=models.FloatField()

    def set_pd_payoffs(self):
        contributions = [
            p.contribution for p in self.get_players() if p.contribution != None
        ]
        self.total_contribution = sum([p.contribution for p in self.get_players()])
        self.min_contribution=min(contributions)
        self.individual_share = (
            self.total_contribution * Constants.efficiency_factor / Constants.players_per_group)
#            self.min_contribution * Constants.efficiency_factor)
        self.average_contribution=(self.total_contribution / Constants.players_per_group)

        for p in self.get_players():
            p.pd_payoff = sum([+ Constants.endowment,
                               - p.contribution,
                               + self.individual_share,
                               ])
            p.set_punishment_endowment()

#元々のpayoff計算
#    def set_pd_payoffs(self):
#        self.total_contribution = sum([p.contribution for p in self.get_players()])
#        self.average_contribution = self.total_contribution / Constants.players_per_group
#        self.individual_share = self.total_contribution * Constants.efficiency_factor / Constants.players_per_group
#        for p in self.get_players():
#            p.pd_payoff = sum([+ Constants.endowment,
#                               - p.contribution,
#                               + self.individual_share,
#                               ])
#            p.set_punishment_endowment()



    def set_punishments(self):
        for p in self.get_players():
            p.set_punishment()
        for p in self.get_players():
            p.set_payoff()


class Player(BasePlayer):
#    contribution = models.IntegerField(verbose_name='あなたはいくら提供しますか？',
#                                        choices=range(0, Constants.endowment+1),
#                                        initial=None)
    contribution = models.PositiveIntegerField(
        min=0, max=Constants.endowment,
        doc="""The amount contributed by the player""",
        label="日本語How much will you contribute to the project (from 0 to {})?".format(Constants.endowment)
    )
    punishment_sent = models.IntegerField()
    punishment_received = models.IntegerField()
    pd_payoff = models.CurrencyField(doc='to store payoff from contribution stage')
    punishment_endowment = models.IntegerField(initial=0, doc='punishment endowment')

    def set_payoff(self):
        self.payoff = self.pd_payoff - self.punishment_sent - self.punishment_received

    def set_punishment_endowment(self):
        assert self.pd_payoff is not None, 'You have to set pd_payoff before setting punishment endowment'
        self.punishment_endowment = min(self.pd_payoff, Constants.punishment_endowment)

    def set_punishment(self):
        self.punishment_sent = sum([i.amount for i in self.punishments_sent.all()])
        self.punishment_received = sum(
            [i.amount for i in self.punishments_received.all()]) * Constants.punishment_factor


class Punishment(djmodels.Model):
    sender = djmodels.ForeignKey(to=Player, related_name='punishments_sent', on_delete=djmodels.CASCADE)
    receiver = djmodels.ForeignKey(to=Player, related_name='punishments_received', on_delete=djmodels.CASCADE)
    amount = models.IntegerField(min=0)