Class: Demos::StockDecider::Option

Inherits:
Object
  • Object
show all
Defined in:
ui/examples/stock_decider/option.rb

Constant Summary collapse

URL = 
"https://cdn.cboe.com/api/global/delayed_quotes/options"

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(payload, current) ⇒ Option

Returns a new instance of Option.



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# File 'ui/examples/stock_decider/option.rb', line 16

def initialize(payload, current)
  @current_price = current
  @payload = payload
end

Class Method Details

.from_ticker(sym) ⇒ Object 



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# File 'ui/examples/stock_decider/option.rb', line 8

def self.from_ticker(sym)
  res = RestClient.get("#{URL}/#{sym.upcase}.json").body
  data = JSON.parse(res, symbolize_names: true)[:data]
  data[:options].map do |option|
    new(option, data[:current_price])
  end
end

Instance Method Details

#attractive?(weeks) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'ui/examples/stock_decider/option.rb', line 33

def attractive?(weeks)
  datespan > weeks - 1 && datespan < weeks + 1
end

#call? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'ui/examples/stock_decider/option.rb', line 49

def call?
  option.scan(/([CP])\d+$/)[0][0] == "C"
end

#code ⇒ Object 



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# File 'ui/examples/stock_decider/option.rb', line 66

def code
  option.scan(/^[A-Za-z]+/)[0]
end

#cycles(weeks) ⇒ Object 



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# File 'ui/examples/stock_decider/option.rb', line 25

def cycles(weeks)
  52 / weeks
end

#datespan ⇒ Object 



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# File 'ui/examples/stock_decider/option.rb', line 37

def datespan
  (expiration - DateTime.now).to_i / 7
end

#expiration ⇒ Object 



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# File 'ui/examples/stock_decider/option.rb', line 53

def expiration
  value = option.scan(/^[A-Za-z]+(\d+)/)[0][0]
  year = "20#{value[0..1]}".to_i
  month = value[2..3].to_i
  day = value[4..5].to_i

  DateTime.new(year, month, day)
end

#name ⇒ Object 



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# File 'ui/examples/stock_decider/option.rb', line 29

def name
  option
end

#option ⇒ Object 



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# File 'ui/examples/stock_decider/option.rb', line 21

def option
  @payload[:option]
end

#percent(weeks) ⇒ Object 



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# File 'ui/examples/stock_decider/option.rb', line 41

def percent(weeks)
  (@current_price * cycles(weeks)) / strike
end

#put? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'ui/examples/stock_decider/option.rb', line 70

def put?
  !call?
end

#strike ⇒ Object 



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# File 'ui/examples/stock_decider/option.rb', line 62

def strike
  option.scan(/\d+$/)[0].to_i / 1000
end

#type ⇒ Object 



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# File 'ui/examples/stock_decider/option.rb', line 45

def type
  call? ? "Call" : "Put"
end