from ._builtin import Page

import random


class Error(Page):

    def is_displayed(self):

        user_agent = self.request.META['HTTP_USER_AGENT']
        is_mobile = False

        for substring in ['Mobi', 'Android']:
            if substring in user_agent:
                is_mobile = True

        return is_mobile


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

    def before_next_page(self):

        self.player.colors_reversed = random.randint(0, 1)


class End1(Page):

    def is_displayed(self):

        return self.player.consent == 2


class GeneralInstructions1(Page):
    pass


class GeneralInstructions2(Page):
    pass


class Instructions(Page):
    pass


class ComprehensionQuestions(Page):
    form_model = 'player'
    form_fields = ['q1', 'q2', 'q3']

    def before_next_page(self):

        self.player.q1_error = False
        if self.player.q1 != 2:
            self.player.q1_error = True

        self.player.q2_error = False
        if self.player.q2 != 420:
            self.player.q2_error = True

        self.player.q3_error = False
        if self.player.q3 != 780:
            self.player.q3_error = True

        self.player.cq_error = False
        if self.player.q1_error or self.player.q2_error or self.player.q3_error:
            self.player.cq_error = True

        if self.player.cq_error:
            self._is_frozen = False
            self._index_in_pages -= 2
            self.participant._index_in_pages -= 2


class End2(Page):
    pass


page_sequence = [
    Error,
    Consent,
    End1,
    GeneralInstructions1,
    GeneralInstructions2,
    Instructions,
    ComprehensionQuestions,
    End2
]