# <imports>
from otree.api import Currency as c
from otree.constants import BaseConstants
# </imports>


# ******************************************************************************************************************** #
# *** CLASS CONSTANTS *** #
# ******************************************************************************************************************** #
class Constants(BaseConstants):

    currency = '$'
    conversionrate = 250

    # stamp current date and in-12-months date in the Instructions
    # -----------------------------------------------------------------------------------------------------------------
    from datetime import date
    from datetime import timedelta
    date1 = date.today()
    date2 = date1 + timedelta(days=365)
    today = date1.strftime("%B %d, %Y")
    in_12_months = date2.strftime("%B %d, %Y")

    # ---------------------------------------------------------------------------------------------------------------- #
    # --- Task-specific Settings --- #
    # ---------------------------------------------------------------------------------------------------------------- #

    # number of steps in the staircase procedure (see graph in the docs)
    # note that <num_choices = x> implies a choice list with <2^x> choices, i.e. <2^x> possible switching points
    # thus, for instance, <num_choice = 5> yields 32 different classifications for preferences towards risks
    num_choices = 5

    # lottery payoffs (in currency units set in settings.py)  and probability (in %) for the high lottery outcome
    # <lottery_hi> and <lottery_lo> define the "high" and "low" outcomes of the lottery ("Option A")
    # <probability> determines the likelihood that the lottery pays the "high" outcome as percentage number
    # thus, <probability = x> implies that the lottery pays <lottery_hi> in <x>% and <lottery_lo> in <100-x>%
    lottery_hi = 100.00
    lottery_lo = 0.00
    probability = 50.00

    # (initial) sure payoff, i.e. the certain payment in the first choice
    # <sure_payoff> defines the certain amount offered as "Option B" in the first of <num_choices> choices
    # the sure payoffs for subsequent choices are determined by <delta> (see below)
    sure_payoff = 154.00

    # (initial) increase/decrease in sure payoff
    # while the first choice offers a fix payment of <sure_payoff>, "Option B" in subsequent choices depend on <delta>
    # generally, for choice <i = 1, 2, ... num_choices>, <sure_payoff_i = sure_payoff + delta / 2 ^ (i-1)> if choice
    # <i-1> = "A" and <sure_payoff_i = sure_payoff - delta / 2 ^ (i-1)> if choice <i-1> = "B"
    # thus, if a subject chooses "A" ("B"), <sure_payoff_i> increases (decreases) by half of the previous rounds <delta>
    # for example: if <sure_payoff = x> and <delta = y>, "Option B" offers <x +/- y/2> in choice 2, <x +/- y/2 +/- y/4>
    # in choice 3, etc.
    delta = 28

    # ---------------------------------------------------------------------------------------------------------------- #
    # --- Overall Settings and Appearance --- #
    # ---------------------------------------------------------------------------------------------------------------- #

    # add "indifference" option
    # if <indifference = False>, subjects can only reveal their preference for either "Option A" or "Option B"
    # if <indifference = True>, an additional option is available to indicate indifference between Option "A" and "B"
    # whenever a subject chooses "Indifferent", the iteration procedure stops as indifference is already reached
    # thus, if a subject chooses "Indifferent" in some choice <x>, all subsequent choices are automatically skipped
    # if an "Indifferent" choice is drawn for payoff, it's randomly determined whether "A" or "B" constitute the payment
    indifference = False

    # render buttons instead of radio buttons
    # if <buttons = True>, a button will be displayed for each choice ("A", "B", "Indifferent") instead of radio buttons
    # that is, subjects only click a single button than rather choosing a radio button and clicking on "Next"
    # <buttons = True> accelerates input of choices but implies that decisions can not be modified
    buttons = False

    # show progress bar
    # if <progress_bar = True> and <one_choice_per_page = True>, a progress bar is rendered
    # if <progress_bar = False>, no information with respect to the advance within the task is displayed
    # the progress bar graphically depicts the advance within the task in terms of how many decision have been made
    # further, information in terms of "page x out of <num_choices>" (with x denoting the current choice) is provided
    progress_bar = True

    # show instructions page
    # if <instructions = True>, a separate template "Instructions.html" is rendered prior to the task
    # if <instructions = False>, the task starts immediately (e.g. in case of printed instructions)
    instructions = True

    # show results page summarizing the task's outcome including payoff information
    # if <results = True>, a separate page containing all relevant information is displayed after finishing the task
    # if <results = False>, the template "Decision.html" will not be rendered
    results = False

    # ---------------------------------------------------------------------------------------------------------------- #
    # --- oTree Settings (Don't Modify) --- #
    # ---------------------------------------------------------------------------------------------------------------- #

    name_in_url = 'Project_BEMO_MAINw'
    players_per_group = None
    num_rounds = num_choices