from otree.api import *


doc = """
This is a one-shot "Prisoner's Dilemma". Two players are asked separately
whether they want to cooperate or defect. Their choices directly determine the
payoffs.
"""


class Constants(BaseConstants):
    name_in_url = 'prisoner'
    players_per_group = 2
    num_rounds = 1
    instructions_template = 'prisoner/instructions.html'
    payoff_A = cu(300)
    payoff_B = cu(200)
    payoff_C = cu(100)
    payoff_D = cu(0)


class Subsession(BaseSubsession):
    pass


class Group(BaseGroup):
    pass


class Player(BasePlayer):
    cooperate = models.BooleanField(
        choices=[[True, 'Cooperate'], [False, 'Defect']],
        doc="""This player's decision""",
        widget=widgets.RadioSelect,
    )


# FUNCTIONS
def set_payoffs(group: Group):
    for p in group.get_players():
        set_payoff(p)


def other_player(player: Player):
    return player.get_others_in_group()[0]


def set_payoff(player: Player):
    payoff_matrix = {
        (False, True): Constants.payoff_A,
        (True, True): Constants.payoff_B,
        (False, False): Constants.payoff_C,
        (True, False): Constants.payoff_D,
    }
    other = other_player(player)
    player.payoff = payoff_matrix[(player.cooperate, other.cooperate)]


# PAGES
class Introduction(Page):
    timeout_seconds = 100


class Decision(Page):
    form_model = 'player'
    form_fields = ['cooperate']


class ResultsWaitPage(WaitPage):
    after_all_players_arrive = set_payoffs


class Results(Page):
    @staticmethod
    def vars_for_template(player: Player):
        opponent = other_player(player)
        return dict(
            opponent=opponent,
            same_choice=player.cooperate == opponent.cooperate,
            my_decision=player.field_display('cooperate'),
            opponent_decision=opponent.field_display('cooperate'),
        )


page_sequence = [Introduction, Decision, ResultsWaitPage, Results]