from otree.api import *


doc = """
Your app description
"""


class Constants(BaseConstants):
    name_in_url = 'trust_game'
    players_per_group = 2
    num_rounds = 3
    endowment = cu(10)


class Subsession(BaseSubsession):
    pass


class Group(BaseGroup):
    multiplication_factor = models.IntegerField()

    round_incentivized = models.IntegerField()

    sent_amount = models.CurrencyField(
        label="How much do you want to send to participant B?"
    )
    message = models.LongStringField(
        label="Would you like to send participant B a message?",
        blank=True
    )
    sent_back_amount = models.CurrencyField(
        label="How much do you want to send back?"
    )

def sent_back_amount_choices(group):
    return currency_range(
        0,
        group.sent_amount * group.multiplication_factor,
        1
    )

def set_payoffs(group):
    p1 = group.get_player_by_id(1)
    p2 = group.get_player_by_id(2)
    p1.payoff = Constants.endowment - group.sent_amount + group.sent_back_amount
    p2.payoff = group.sent_amount * group.multiplication_factor - group.sent_back_amount

def creating_session(subsession):
    import random
    for group in subsession.get_groups():
        group.multiplication_factor = random.choice([3, 6])
        print('set multiplication_factor to', group.multiplication_factor)
        group.round_incentivized = random.choice([1, 2, 3])


def set_final_payoffs(group):
    p1 = group.get_player_by_id(1)
    p2 = group.get_player_by_id(2)
    p1.final_payoff = Constants.endowment - group.in_round(group.round_incentivized).sent_amount + group.in_round(group.round_incentivized).sent_back_amount
    p2.final_payoff = group.in_round(group.round_incentivized).sent_amount * group.in_round(group.round_incentivized).multiplication_factor - group.in_round(group.round_incentivized).sent_back_amount


class Player(BasePlayer):
    final_payoff = models.CurrencyField()

# PAGES
class Send(Page):
    form_model = 'group'
    form_fields = ['sent_amount', 'message']
    
    @staticmethod
    def is_displayed(player):
        return player.id_in_group == 1

class SendBack(Page):

    form_model = 'group'
    form_fields = ['sent_back_amount']

    @staticmethod
    def is_displayed(player):
        return player.id_in_group == 2

    @staticmethod
    def vars_for_template(player):
        group = player.group

        return dict(
            tripled_amount=group.sent_amount * group.multiplication_factor
        )

class WaitForP1(WaitPage):
    after_all_players_arrive = 'sent_back_amount_choices'


class ResultsWaitPage(WaitPage):
    after_all_players_arrive = 'set_payoffs'


class Results(Page):
    pass

class FinalResultsWaitPage(WaitPage):
    @staticmethod
    def is_displayed(player):
        return player.round_number == 3
    
    after_all_players_arrive = 'set_final_payoffs'

class PaymentPage(Page):
    @staticmethod
    def is_displayed(player):
        return player.round_number == 3


page_sequence = [Send, WaitForP1, SendBack, ResultsWaitPage, Results, FinalResultsWaitPage, PaymentPage]