from otree.api import Currency as c, currency_range

from . import models
from ._builtin import Page, WaitPage
from .models import Constants


class TGInstructions(Page):
    pass

class TG_WaitForSender(CustomWaitPage):
    def is_displayed(self):
        return self.player.role() == 'Receiver'

class TG_Send(Page):

    form_model = models.Group
    form_fields = ['sent_amount']

    def is_displayed(self):
        return self.player.role() == 'Sender'


class TG_SendBack(Page):
    form_model = models.Group
    form_fields = ['sent_back_amount']

    def is_displayed(self):
        return self.player.role() == 'Receiver'

    def vars_for_template(self):
        tripled_amount = self.group.sent_amount * Constants.multiplication_factor

        return {
                'tripled_amount': tripled_amount,
                'prompt':
                    'Please choose an amount from 0 to %s:' % tripled_amount}

    def sent_back_amount_max(self):
        tripled_amount = self.group.sent_amount * Constants.multiplication_factor
        return tripled_amount


class TGResultsWaitPage(WaitPage):
    def after_all_players_arrive(self):
        self.group.tg_payoffs()


class TGResults(Page):
    """This page displays the earnings of each player"""

    def vars_for_template(self):
        return {
            'tripled_amount': self.group.sent_amount * Constants.multiplication_factor
        }

page_sequence = [
    TGInstructions,
    TG_Send,
    WaitPage,
    TG_SendBack,
    TGResultsWaitPage,
    TGResults
]