Class: Finexclub::Chart

Inherits:
Object
  • Object
show all
Includes:
Document
Defined in:
lib/finexclub/chart.rb

Constant Summary collapse

SYMBOLS = 
%w(chfjpy eurchf audusd audcad eurnzd nzdusd gbpchf nzdcad usdcad cadjpy audjpy euraud gbpnzd nzdjpy eurusd usdjpy eurcad cadchf gbpaud gbpusd audchf eurjpy gbpcad usdchf nzdchf audnzd eurgbp gbpjpy)

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Document

included

Constructor Details

#initialize(core) ⇒ Chart

Returns a new instance of Chart.



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# File 'lib/finexclub/chart.rb', line 18

def initialize(core)
  @core = core
  @indicators = {}
end

Instance Attribute Details

#core ⇒ Object (readonly)

Returns the value of attribute core.



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# File 'lib/finexclub/chart.rb', line 13

def core
  @core
end

#indicators ⇒ Object

Returns the value of attribute indicators.



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# File 'lib/finexclub/chart.rb', line 14

def indicators
  @indicators
end

Class Method Details

.add_handler_for(indicator, klass) ⇒ Object 



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# File 'lib/finexclub/chart.rb', line 70

def self.add_handler_for(indicator, klass)
  @handlers ||= {}
  @handlers[indicator.to_s] = klass
end

.build_new(core, symbol, tf, time) ⇒ Object 



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# File 'lib/finexclub/chart.rb', line 42

def self.build_new(core, symbol, tf, time)
  tf_hash = self.timeframe_range(tf, time)
    
  c = Chart.new(core)
  c.updated= time.to_i 
  c.symbol= symbol
  c.timeframe = tf
  c.starts = tf_hash[:starts]
  c.expires = tf_hash[:expires] 
  c
end

.handler_for(indicator) ⇒ Object 



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# File 'lib/finexclub/chart.rb', line 75

def self.handler_for(indicator)
  @handlers ||= {}
  @handlers[indicator.to_s]
end

.indicator_handler(indicator, indicator_handler_class) ⇒ Object 



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# File 'lib/finexclub/chart.rb', line 54

def self.indicator_handler(indicator, indicator_handler_class)
  add_handler_for(indicator, indicator_handler_class)

  #define_method("#{indicator}=") do |doc|
    #@indicator_docs[indicator] = doc
  #end

  define_method("#{indicator}") do
    return nil unless doc = indicators[indicator.to_s]

    indicator_obj = handler_for(indicator.to_s).new(core)
    indicator_obj.build(doc)
    indicator_obj
  end
end

.timeframe_range(tf, time) ⇒ Object 



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# File 'lib/finexclub/chart.rb', line 27

def self.timeframe_range(tf, time)
  time = time.is_a?(Time) ? time : Time.at(time).utc

  delta = case tf
    when 'h1', :h1 then 1
    when 'h4', :h4 then 4
    when 'd1', :d1 then 24
    else 1
  end
  starts = Time.utc(time.year, time.month, time.day, (time.hour/delta)*delta, 0)
  expires = starts + delta*60*60

  { :starts => starts.to_i, :expires => expires.to_i }
end

Instance Method Details

#handler_for(indicator) ⇒ Object 



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# File 'lib/finexclub/chart.rb', line 23

def handler_for(indicator)
  self.class.handler_for(indicator)
end