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 = 's'
    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)

    ## Simple strategy quantity
    STRATEGY_QUANTITY = 10
    
    # 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
    

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 the Inflation Rate is greater than the interest rate paid on your Savings Account. What should you do in this situation?',
        widget=widgets.RadioSelect
    )
    q2 = models.IntegerField(
        label='Suppose the Inflation Rate is less than the interest rate paid on your Savings Account. What should you do in this situation?',
        widget=widgets.RadioSelect
    )
    q3 = models.IntegerField(
        label='Suppose the Inflation Rate is greater than the interest rate paid on your Savings Account. What should you do in this situation?',
        widget=widgets.RadioSelect
    )
    q4 = models.IntegerField(
        label='Suppose you are in Month 117. The Inflation Rate is greater than the interest rate paid on your Savings Account. What should you do in this situation?',
        widget=widgets.RadioSelect
    )
    q5 = models.IntegerField(
        label='Suppose the Inflation Rate is less than the interest rate paid on your Savings Account. What should you do in this situation?',
        widget=widgets.RadioSelect
    )
    q6 = models.IntegerField(
        label='Suppose the Inflation Rate is equal to the interest rate paid on your Savings Account. What should you do in this situation?',
        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'])

def q1_choices(player):
        import random
        choices = [[1,'Buy {} units'.format(C.STRATEGY_QUANTITY)],[2,'Save (Buy 0 units)'],[3,'Buy 1 unit'],[4,'Buy 4 units']]
        random.shuffle(choices)
        return choices

def q2_choices(player):
        import random
        choices = [[1,'Buy {} units'.format(C.STRATEGY_QUANTITY)],[2,'Save (Buy 0 units)'],[3,'Buy 1 unit'],[4,'Buy 4 units']]
        random.shuffle(choices)
        return choices

def q3_choices(player):
        import random
        choices = [[1,'Buy {} units'.format(C.STRATEGY_QUANTITY)],[2,'Save (Buy 0 units)'],[3,'Buy 1 unit'],[4,'Buy 4 units']]
        random.shuffle(choices)
        return choices
        
def q4_choices(player):
        import random
        choices = [[1,'Buy {} units'.format(C.STRATEGY_QUANTITY)],[2,'Save (Buy 0 units)'],[3,'Buy 1 unit'],[4,'Buy 4 units']]
        random.shuffle(choices)
        return choices

def q5_choices(player):
        import random
        choices = [[1,'Buy {} units'.format(C.STRATEGY_QUANTITY)],[2,'Save (Buy 0 units)'],[3,'Buy 1 unit'],[4,'Buy 4 units']]
        random.shuffle(choices)
        return choices

def q6_choices(player):
        import random
        choices = [[1,'Buy {} units'.format(C.STRATEGY_QUANTITY)],[2,'Save (Buy 0 units)'],[3,'Buy 1 unit'],[4,'Buy 4 units']]
        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
    
    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,
            )
        }


# PAGES
class S_1(Page):
    counter_questions = 0

class S_2(Page):
    counter_questions = S_1.counter_questions + 1

    ## For progress bars
    @staticmethod
    def vars_for_template(player: Player):
        return dict(
            percentage=round(S_2.counter_questions / C.NUM_QUESTIONS * 100,)
        )

class S_3(Page):
    live_method = live_method
    form_model = 'player'
    form_fields = ['q1']
    
    counter_questions = S_2.counter_questions + 1

    ## For progress bars
    @staticmethod
    def vars_for_template(player: Player):
        return dict(
            percentage=round(S_3.counter_questions / C.NUM_QUESTIONS * 100,)
        )

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

        error_messages = dict(
            a1='That is incorrect. You have 0 Food in Stock.',
            q1='That is incorrect. When the Inflation Rate is greater than the Interest Rate and you have 0 Food in Stock, you should buy {} units.'.format(C.STRATEGY_QUANTITY)
        )

        for field_name in solutions:
            if values[field_name] == 2:
                error_messages = error_messages['a1']
                return error_messages

            elif values[field_name] != solutions[field_name]:
                error_messages = error_messages[field_name]
                return error_messages

class S_4(Page):
    live_method = live_method
    form_model = 'player'
    form_fields = ['q2']
    
    counter_questions = S_3.counter_questions + len(S_3.form_fields)

    ## For progress bars
    @staticmethod
    def vars_for_template(player: Player):
        return dict(
            percentage=round(S_4.counter_questions / C.NUM_QUESTIONS * 100,)
        )

    @staticmethod
    def error_message(player, values):
        solutions = dict(
            q2=2,
        )

        error_messages = dict(
            q2='That is incorrect. Whenever you have Food in Stock, you should save (buy 0 units of Food).'
        )

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

class S_5(Page):
    live_method = live_method
    form_model = 'player'
    form_fields = ['q3']
    
    counter_questions = S_4.counter_questions + len(S_4.form_fields)

    ## For progress bars
    @staticmethod
    def vars_for_template(player: Player):
        return dict(
            percentage=round(S_5.counter_questions / C.NUM_QUESTIONS * 100,)
        )

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

        error_messages = dict(
            q3='That is incorrect. Whenever you have Food in Stock, you should save (buy 0 units of Food).'
        )

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

class S_6(Page):
    live_method = live_method
    form_model = 'player'
    form_fields = ['q4']
    
    counter_questions = S_5.counter_questions + len(S_5.form_fields)

    ## For progress bars
    @staticmethod
    def vars_for_template(player: Player):
        return dict(
            percentage=round(S_6.counter_questions / C.NUM_QUESTIONS * 100,)
        )

    @staticmethod
    def error_message(player, values):
        solutions = dict(
            q4=4
        )
        
        error_messages = dict(
            a1='That is incorrect. You should not buy more Food than there are months remaining in the Savings Game (Month 117 of 120).',
            q4='That is incorrect. Here, you have 0 Food in Stock, and the Inflation Rate is greater than the Interest Rate.'
        )

        for field_name in solutions:
            if values[field_name] == 1:
                error_messages = error_messages['a1']
                return error_messages

            elif values[field_name] != solutions[field_name]:
                error_messages = error_messages[field_name]
                return error_messages

class S_7(Page):
    live_method = live_method
    form_model = 'player'
    form_fields = ['q5']
    
    counter_questions = S_6.counter_questions + len(S_6.form_fields)

    ## For progress bars
    @staticmethod
    def vars_for_template(player: Player):
        return dict(
            percentage=round(S_7.counter_questions / C.NUM_QUESTIONS * 100,)
        )

    @staticmethod
    def error_message(player, values):
        solutions = dict(
            q5=3,
        )
        
        error_messages = dict(
            a1='That is incorrect. You have 0 Food in Stock.',
            q5='That is incorrect. When the Inflation Rate is less than the Interest Rate, you should not buy more than 1 unit of Food.'
        )

        for field_name in solutions:
            if values[field_name] == 2:
                error_messages = error_messages['a1']
                return error_messages

            elif values[field_name] != solutions[field_name]:
                error_messages = error_messages[field_name]
                return error_messages

class S_8(Page):
    live_method = live_method
    form_model = 'player'
    form_fields = ['q6']
    
    counter_questions = S_7.counter_questions + len(S_7.form_fields)

    ## For progress bars
    @staticmethod
    def vars_for_template(player: Player):
        return dict(
            percentage=round(S_8.counter_questions / C.NUM_QUESTIONS * 100,)
        )

    @staticmethod
    def error_message(player, values):
        solutions = dict(
            q6=3,
        )
        
        error_messages = dict(
            a1='That is incorrect. You have 0 Food in Stock.',
            q6='That is incorrect. When the Inflation Rate is equal to the Interest Rate, you should not buy more than 1 unit of Food.'
        )

        for field_name in solutions:
            if values[field_name] == 2:
                error_messages = error_messages['a1']
                return error_messages

            elif values[field_name] != solutions[field_name]:
                error_messages = error_messages[field_name]
                return error_messages

class Results(Page):

    counter_questions = S_8.counter_questions + len(S_8.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 = [
    S_1, 
    S_2, 
    S_3, 
    S_4, 
    S_5, 
    S_6,
    S_7,
    S_8,
    Results
]