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

from django.forms.widgets import NumberInput
from random import choice
import utils

author = 'Tommaso Batistoni - t.batistoni@ucl.ac.uk'

doc = """
Trust Game where each of the two players takes both roles
"""


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

    max_seconds_waiting_for_partners = 1000 * 20 * 1

    endowment = 5
    multiplier = 3
    step = 0.5

    empathy_values = [(n, f'global/imgs/emoji{n}.png') for n in range(1, 6)]


class Subsession(BaseSubsession):
    # Match players and identify the relevant partner identity treatment
    def set_partner_based_on_identity(self, still_waiting_for_task, task, num_players):
        return utils.set_partner_based_on_identity(still_waiting_for_task, task, num_players)


class Group(BaseGroup):
    partner = models.StringField()


class Player(BasePlayer):
    trust_partner = models.StringField()
    trust_partner_name = models.StringField()

    trust_send = models.CurrencyField(
        label='',
        min=0, max=Constants.endowment, widget=NumberInput(attrs={'step': Constants.step})
    )
    timeout_send = models.BooleanField()
    empathy = models.IntegerField()
    trust_return = models.CurrencyField(label='', min=0)
    timeout_return = models.BooleanField()
    trust_decision_to_pay = models.IntegerField()
    partner_name = models.StringField()
    empathy_self = models.IntegerField()

    def other_player(self):
        return self.get_others_in_group()[0]

    def trust_return_max(self):
        if self.participant.vars.get('unmatched'):
            other_sent = self.participant.vars.get('other_sent')
        else:
            other_sent = self.other_player().trust_send
        return other_sent * Constants.multiplier

    def trust_return_error_message(self, value):
        if value > self.trust_return_max():
            return 'This should not exceed the tripled quantity'

    def set_payoff(self):
        self.trust_decision_to_pay = choice([1, 2])
        if self.trust_decision_to_pay == 1:
            if self.participant.vars.get('unmatched'):
                other_return = self.participant.vars['other_return']
            else:
                other_return = self.other_player().trust_return
            self.payoff = Constants.endowment - self.trust_send + other_return
        else:
            if self.participant.vars.get('unmatched'):
                other_sent = self.participant.vars.get('other_sent')
            else:
                other_sent = self.other_player().trust_send
            self.payoff = other_sent * Constants.multiplier - self.trust_return