from otree.api import *
c = Currency


doc = """
This is a one-period public goods game with 3 players.
"""


class Constants(BaseConstants):
    name_in_url = 'public_goods'
    players_per_group = 3
    num_rounds = 1
    instructions_template = 'public_goods/instructions.html'
    # """Amount allocated to each player"""
    endowment = c(100)
    multiplier = 2


class Subsession(BaseSubsession):
    pass


class Group(BaseGroup):
    total_contribution = models.CurrencyField()
    individual_share = models.CurrencyField()


class Player(BasePlayer):
    contribution = models.CurrencyField(
        min=0,
        max=Constants.endowment,
        doc="""The amount contributed by the player""",
        label="How much will you contribute to the project (from 0 to 100)?",
    )


# FUNCTIONS
def vars_for_admin_report(subsession: Subsession):
    contributions = [p.contribution for p in subsession.get_players() if p.contribution != None]
    if contributions:
        return dict(
            avg_contribution=sum(contributions) / len(contributions),
            min_contribution=min(contributions),
            max_contribution=max(contributions),
        )
    else:
        return dict(
            avg_contribution='(no data)',
            min_contribution='(no data)',
            max_contribution='(no data)',
        )


def set_payoffs(group: Group):
    group.total_contribution = sum([p.contribution for p in group.get_players()])
    group.individual_share = (
        group.total_contribution * Constants.multiplier / Constants.players_per_group
    )
    for p in group.get_players():
        p.payoff = (Constants.endowment - p.contribution) + group.individual_share


# PAGES
class Introduction(Page):
    """Description of the game: How to play and returns expected"""

    pass


class Contribute(Page):
    """Player: Choose how much to contribute"""

    form_model = 'player'
    form_fields = ['contribution']


class ResultsWaitPage(WaitPage):
    after_all_players_arrive = set_payoffs
    body_text = "Waiting for other participants to contribute."


class Results(Page):
    """Players payoff: How much each has earned"""

    @staticmethod
    def vars_for_template(player: Player):
        group = player.group

        return dict(total_earnings=group.total_contribution * Constants.multiplier)


page_sequence = [Introduction, Contribute, ResultsWaitPage, Results]