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


doc = """
This is a one-period public goods game with 2 players.
"""


class Constants(BaseConstants):
    name_in_url = 'Start_Experiment'
    players_per_group = 8
    num_rounds = 1

    instructions_template = 'Start_Experiment/Instructions.html'

class Subsession(BaseSubsession):
    pass

class Group(BaseGroup):
    pass

class Player(BasePlayer):
    ProlificID=models.StringField(max_length=24)

    def ProlificID_error_message(self, value):
        if len(value) < 24:
            return 'Make sure you ProlificID consists of 24 characters'