from otree.api import *
c = Currency


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 if 1 player defects and the other cooperates""",
    betray_payoff = c(300)
    betrayed_payoff = c(0)
    # payoff if both players cooperate or both defect
    both_cooperate_payoff = c(200)
    both_defect_payoff = c(100)


class Subsession(BaseSubsession):
    pass


class Group(BaseGroup):
    pass


class Player(BasePlayer):
    decision = models.StringField(
        choices=[['Cooperate', 'Cooperate'], ['Defect', '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 = dict(
        Cooperate=dict(
            Cooperate=Constants.both_cooperate_payoff, Defect=Constants.betrayed_payoff
        ),
        Defect=dict(
            Cooperate=Constants.betray_payoff, Defect=Constants.both_defect_payoff
        ),
    )
    player.payoff = payoff_matrix[player.decision][other_player(player).decision]


# PAGES
class Introduction(Page):
    timeout_seconds = 100


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


class ResultsWaitPage(WaitPage):
    after_all_players_arrive = set_payoffs


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


page_sequence = [Introduction, Decision, ResultsWaitPage, Results]