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

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 = 3
    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
def set_payoffs(group):
    for p in group.get_players():
        set_payoff(p)
class Group(BaseGroup):
    set_payoffs = set_payoffs
def other_player(player):
    group = player.group
    return player.get_others_in_group()[0]
def set_payoff(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]
class Player(BasePlayer):
    decision = models.StringField(choices=[['Cooperate', 'Cooperate'], ['Defect', 'Defect']], doc='This player s decision', widget=widgets.RadioSelect)
    other_player = other_player
    set_payoff = set_payoff