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

doc = '\nThis is a one-shot "Prisoner\'s Dilemma". Two players are asked separately\nwhether they want to cooperate or defect. Their choices directly determine the\npayoffs.\n'
class Constants(BaseConstants):
    name_in_url = 'prisoner'
    players_per_group = 2
    num_rounds = 1
    betray_payoff = c(300)
    betrayed_payoff = c(0)
    both_cooperate_payoff = c(200)
    both_defect_payoff = c(100)
    instructions_template = 'prisoner/instructions.html'
class Subsession(BaseSubsession):
    pass
class Group(BaseGroup):
    def set_payoffs(self):
        for p in self.get_players():
            p.set_payoff()
class Player(BasePlayer):
    decision = models.StringField(choices=[['Cooperate', 'Cooperate'], ['Defect', 'Defect']], doc='This player s decision', widget=widgets.RadioSelect)
    def other_player(self):
        return self.get_others_in_group()[0]
    def set_payoff(self):
        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
            ),
        )
        
        self.payoff = payoff_matrix[self.decision][self.other_player().decision]