from otree.api import *
from decimal import *
from settings import SESSION_CONFIG_DEFAULTS, SESSION_CONFIGS, PARTICIPANT_FIELDS

author = "Nathaniel Archer Lawrence, LEMMA, Université Panthéon-Assas - Paris II"
doc = """
Consumption simulation with interface based off of 'Shopping app (online grocery store)' from oTree demos,
see: <https://s3.amazonaws.com/otreehub/browsable_source/d7188187-cdba-4c61-ae3a-d7cc3d6fcde9/shop/index.html>.
"""
def read_csv():
    import csv

    f = open(__name__ + '/catalog.csv', encoding='utf-8-sig')
    rows = [row for row in csv.DictReader(f)]
    for row in rows:
        # all values in CSV are string unless you convert them
        row['unit_price'] = float(row['unit_price'])
    return rows

class C(BaseConstants):
    NAME_IN_URL = 'f'
    PLAYERS_PER_GROUP = None
    NUM_ROUNDS = 1
    NUM_QUESTIONS = 6 + 2

    # task constants
    NUM_PERIODS = 120
    INITIAL_ENDOWMENT = SESSION_CONFIG_DEFAULTS['initial_endowment']
    INCOME = SESSION_CONFIG_DEFAULTS['income']
    INTEREST_RATE = SESSION_CONFIG_DEFAULTS['interest_rate']
    INTEREST_PERCENT = round(INTEREST_RATE*100,2)
    INTEREST_ROUNDED = round(INTEREST_RATE,4)
    INTEREST_EARNED = cu((INITIAL_ENDOWMENT + INCOME) * INTEREST_RATE )
    CONSUMPTION_RATE = 1 # amount of good consumed from stock balance each period
    MONETARY_POLICY = SESSION_CONFIG_DEFAULTS['monetary_policy']
    TOTAL_CASH = cu(INITIAL_ENDOWMENT + INCOME)
    
    # list of products taken from csv file
    PRODUCTS = read_csv()
    # SKU = 'stock keeping unit' = product ID
    PRODUCTS_DICT = {row['sku']: row for row in PRODUCTS}

    ## For practice questions
    QUANTITY = 4
    QUANTITY_SAVINGS = QUANTITY - 2
    NEW_CASH = TOTAL_CASH - (PRODUCTS_DICT['1']['unit_price'] * QUANTITY_SAVINGS)
    NEW_STOCK = 0

    ## Real Interest Rate constants
    INFLATION_1 = 0
    INFLATION_2 = 0.43/12
    INFLATION_3 = 0.22773/12
    REAL_INTEREST_1 = INTEREST_RATE - INFLATION_1
    REAL_INTEREST_2 = INTEREST_RATE - INFLATION_2
    REAL_INTEREST_3 = INTEREST_RATE - INFLATION_3
    

class Subsession(BaseSubsession):
    pass

class Group(BaseGroup):
    pass

class Player(BasePlayer):
    ## Session indices
    day = models.IntegerField()
    app_sequence = models.IntegerField()
    inf_sequence = models.IntegerField()
    intervention = models.IntegerField()
        
    ### choices = [[value,label],[value,label],...]
    q1 = models.IntegerField(
        label='Suppose you face the current situation below. In this month, what happens to your purchasing power?',
        widget=widgets.RadioSelect
    )
    q2 = models.IntegerField(
        label='Can you afford more, less, or the same amount of Food as before?',
        widget=widgets.RadioSelect
    )
    q3 = models.IntegerField(
        label='Suppose you face the current situation below. In this month, what happens to your purchasing power?',
        widget=widgets.RadioSelect
    )
    q4 = models.IntegerField(
        label='Can you afford more, less, or the same amount of Food as before?',
        widget=widgets.RadioSelect
    )
    q5 = models.IntegerField(
        label='Suppose you face the current situation below. In this month, what happens to your purchasing power?',
        widget=widgets.RadioSelect
    )
    q6 = models.IntegerField(
        label='Can you afford more, less, or the same amount of Food as before?',
        widget=widgets.RadioSelect
    )

    total_price = models.CurrencyField(initial=0)
    initial_savings = models.CurrencyField(initial=0)
    cashOnHand = models.CurrencyField(initial=0)
    finalSavings = models.CurrencyField(initial=0)
    finalStock = models.IntegerField(initial=0)
    interestEarned = models.CurrencyField(initial=0)
    newPrice = models.FloatField(initial=C.PRODUCTS_DICT['1']['unit_price'])
    realInterest_1 = models.FloatField()
    realInterest_2 = models.FloatField()
    realInterest_3 = models.FloatField()


def q1_choices(player):
        import random
        choices = [[1,'It increases.'],[2,'It decreases.'],[3,'It stays the same.'],[4,'There is not enough information to determine the effect.']]
        random.shuffle(choices)
        return choices

def q2_choices(player):
        import random
        choices = [[1,'More'],[2,'Less'],[3,'The same amount'],[4,'There is not enough information to determine the effect.']]
        random.shuffle(choices)
        return choices

def q3_choices(player):
        import random
        choices = [[1,'It increases.'],[2,'It decreases.'],[3,'It stays the same.'],[4,'There is not enough information to determine the effect.']]
        random.shuffle(choices)
        return choices
        

def q4_choices(player):
        import random
        choices = [[1,'More'],[2,'Less'],[3,'The same amount'],[4,'There is not enough information to determine the effect.']]
        random.shuffle(choices)
        return choices

def q5_choices(player):
        import random
        choices = [[1,'It increases.'],[2,'It decreases.'],[3,'It stays the same.'],[4,'There is not enough information to determine the effect.']]
        random.shuffle(choices)
        return choices

def q6_choices(player):
        import random
        choices = [[1,'More'],[2,'Less'],[3,'The same amount'],[4,'There is not enough information to determine the effect.']]
        random.shuffle(choices)
        return choices


class Item(ExtraModel):
    player = models.Link(Player)
    sku = models.StringField()
    name = models.StringField()
    quantity = models.IntegerField()
    unit_price = models.CurrencyField()
    newPrice = models.FloatField(initial=C.PRODUCTS_DICT['1']['unit_price'])     

# Calculate total price of item with quantity selected
def total_price(item: Item):
    return item.quantity * item.unit_price

# Convert information about items into a dictionary
def to_dict(item: Item):
    return dict(
        sku=item.sku, name=item.name, quantity=item.quantity, total_price=total_price(item)
    )

# Send info to HTML
def live_method(player: Player, data):

    if player.round_number == 1:
        player.newPrice = float(C.PRODUCTS_DICT['1']['unit_price'])
        if 'sku' in data:
            sku = data['sku']
            delta = data['delta']
            product = C.PRODUCTS_DICT[sku]
            matches = Item.filter(player=player, sku=sku)
            if matches:
                [item] = matches
                item.quantity += delta
                if item.quantity <= 0:
                    item.delete()
            else:
                if delta > 0:
                    Item.create(
                        player=player,
                        quantity=delta,
                        sku=sku,
                        name=product['name'],
                        unit_price=player.newPrice
                    )

        items = Item.filter(player=player)
        item_dicts = [to_dict(item) for item in items]
        player.total_price = sum([total_price(item) for item in items])
        player.initial_savings = C.INITIAL_ENDOWMENT
        player.cashOnHand = player.initial_savings + C.INCOME
        player.finalSavings = player.cashOnHand - player.total_price
        player.finalStock = sum([item.quantity for item in items])
        player.interestEarned = 0
        player.newPrice = player.newPrice
        player.realInterest_1 = round(100 * (C.REAL_INTEREST_1), 2)
        player.realInterest_2 = round(100 * (C.REAL_INTEREST_2), 2)
        player.realInterest_3 = round(100 * (C.REAL_INTEREST_3), 2)
    
    return {
        player.id_in_group: dict(
            items=item_dicts,
            total_price=player.total_price,
            initial_savings=player.initial_savings,
            interestEarned=player.interestEarned,
            cashOnHand=player.cashOnHand,
            finalSavings=player.finalSavings,
            finalStock=player.finalStock,
            newPrice=player.newPrice,
            realInterest_1=player.realInterest_1,
            realInterest_2=player.realInterest_2,
            realInterest_3=player.realInterest_3
            )
        }


# PAGES
class F_1(Page):
    counter_questions = 0

class F_2(Page):
    live_method = live_method

    counter_questions = F_1.counter_questions + 1

    ## For progress bars
    @staticmethod
    def vars_for_template(player: Player):
        return dict(
            percentage=round(F_2.counter_questions / C.NUM_QUESTIONS * 100,)
        )

class F_3(Page):
    live_method = live_method
    form_model = 'player'
    form_fields = ['q1','q2']
    
    counter_questions = F_2.counter_questions + 1

    ## For progress bars
    @staticmethod
    def vars_for_template(player: Player):
        return dict(
            percentage=round(F_3.counter_questions / C.NUM_QUESTIONS * 100,)
        )

    @staticmethod
    def error_message(player, values):
        solutions = dict(
            q1=1,
            q2=1
        )

        error_messages = dict(
            q1='The Real Interest Rate is positive. This implies an increase in purchasing power.',
            q2='The Real Interest Rate is positive. This implies you can afford more Food than before.',
        )

        for field_name in solutions:
            if values[field_name] != solutions[field_name]:
                error_messages = error_messages[field_name]
                return error_messages

class F_4(Page):
    live_method = live_method
    form_model = 'player'
    form_fields = ['q3','q4']
    
    counter_questions = F_3.counter_questions + len(F_3.form_fields)

    ## For progress bars
    @staticmethod
    def vars_for_template(player: Player):
        return dict(
            percentage=round(F_4.counter_questions / C.NUM_QUESTIONS * 100,)
        )

    @staticmethod
    def error_message(player, values):
        solutions = dict(
            q3=2,
            q4=2
        )

        error_messages = dict(
            q3='The Real Interest Rate is negative. This implies a decrease in purchasing power.',
            q4='The Real Interest Rate is negative. This implies you can afford less Food than before.',
        )

        for field_name in solutions:
            if values[field_name] != solutions[field_name]:
                error_messages = error_messages[field_name]
                return error_messages

class F_5(Page):
    live_method = live_method
    form_model = 'player'
    form_fields = ['q5','q6']
    
    counter_questions = F_4.counter_questions + len(F_4.form_fields)

    ## For progress bars
    @staticmethod
    def vars_for_template(player: Player):
        return dict(
            percentage=round(F_5.counter_questions / C.NUM_QUESTIONS * 100,)
        )

    @staticmethod
    def error_message(player, values):
        solutions = dict(
            q5=3,
            q6=3
        )

        error_messages = dict(
            q5='The Real Interest Rate is zero. This implies your purchasing power stays the same.',
            q6='The Real Interest Rate is zero. This implies you can afford the same amount of Food as before.',
        )

        for field_name in solutions:
            if values[field_name] != solutions[field_name]:
                error_messages = error_messages[field_name]
                return error_messages

class Results(Page):

    counter_questions = F_5.counter_questions + len(F_5.form_fields)

    ## For progress bars
    @staticmethod
    def vars_for_template(player: Player):
        return dict(
            percentage=round(Results.counter_questions / C.NUM_QUESTIONS * 100,)
        )


page_sequence = [
    F_1,
    F_2,
    F_3,
    F_4,
    F_5,
    Results
]