from otree.api import *

c = cu

doc = ''


class C(BaseConstants):
    NAME_IN_URL = 'Comprehension'
    PLAYERS_PER_GROUP = None
    NUM_ROUNDS = 1


class Subsession(BaseSubsession):
    pass


class Group(BaseGroup):
    pass


class Player(BasePlayer):
    Backtesting = models.StringField(
        choices=[['The statement is correct.', 'The statement is correct.'], ['The statement ist incorrect.', 'The statement ist incorrect.']],
        label='„All stocks offer the same expected rate of return but differ in the amount of risk that they carry.“')
    num_failed_attempts = models.IntegerField(initial=0)
    failed_too_many = models.BooleanField(initial=False)


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

    @staticmethod
    def error_message(player: Player, values):
        solutions = dict(Backtesting="The statement is correct.")

        # error_message can return a dict whose keys are field names and whose
        # values are error messages
        errors = {f: 'Wrong' for f in solutions if values[f] != solutions[f]}
        # print('errors is', errors)
        if errors:
            player.num_failed_attempts += 1
            if player.num_failed_attempts >= 1:
                player.failed_too_many = True
                # we don't return any error here; just let the user proceed to the
                # next page, but the next page is the 'failed' page that boots them
                # from the experiment.
            else:
                return errors


class Failed(Page):
    form_model = 'player'

    @staticmethod
    def is_displayed(player: Player):
        return player.failed_too_many


page_sequence = [Backtesting, Failed]