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


import re
import string
import random

author = 'Magnus Strobel'

doc = """
End
"""


def id_generator(size=6, chars=string.ascii_uppercase + string.digits):
    code = "Stellenbosch-" + ''.join(random.choice(chars) for _ in range(size))
    return code

class Constants(BaseConstants):
    name_in_url = 'end'
    players_per_group = None
    num_rounds = 1


class Subsession(BaseSubsession):
    def creating_session(self):
        count = 1
        for p in self.get_players():
            created_code = str(id_generator()) + str(count)
            p.participation_code = created_code
            count += 1


class Group(BaseGroup):
    pass


class Player(BasePlayer):
    email = models.StringField(label="")
    
    # https://stackoverflow.com/questions/8022530/how-to-check-for-valid-email-address
    # https://stackoverflow.com/questions/201323/how-to-validate-an-email-address-using-a-regular-expression
    def email_error_message(self, email):
        if not re.match(r"^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$", email):
            return 'Please provide a valid email address!'
        
        
    participation_code = models.StringField()