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

author = 'Ralph Wachter'

doc = """
Stag-hunt game to measure the tolerance of strategic uncertainty. Two players are asked separately
whether they want to cooperate or defect. Their choices directly determine the
payoffs.
"""


class Constants(BaseConstants):
    name_in_url = 'my_SHG'
    players_per_group = 2
    num_rounds = 1

    instructions_template = 'my_SHG/Instructions.html'

    # payoff if 1 player defects and the other cooperates""",
    betray_payoff = c(9)
    betrayed_payoff = c(0)

    # payoff if both players cooperate or both defect
    both_cooperate_payoff = c(10)
    both_defect_payoff = c(7)


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', '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]