from otree.api import *

doc = """
Consent forms, if the participants refuse to take part in, then exit.  
"""


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


class Subsession(BaseSubsession):
    consent_no = models.IntegerField(initial = 0)
    pass


class Group(BaseGroup):
    pass


class Player(BasePlayer):
    is_agree = models.BooleanField(initial=False)
    

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

    @staticmethod
    def before_next_page(player,timeout_happened):
        if player.is_agree:
            player.subsession.consent_no += 1

class RefusePage(Page):
    @staticmethod
    def is_displayed(player: Player):
        return (not player.is_agree)

class InstructionsText(Page):
    pass

class InstructionsGraphics(Page):
    pass


page_sequence = [ConsentForm, 
    RefusePage, 
    InstructionsText,
    InstructionsGraphics]