Class: StockMarkets::FileDataProcessor

Inherits:
Object
  • Object
show all
Defined in:
lib/stock_markets/file_data_processor.rb

Constant Summary collapse

LAST_UPDATE_MARKET_MINIMAL_YEARS_COUNT = 
2
ACTIVE_MARKET_STATUS_NAME = 
'ACTIVE'
MARKET_NAME_CSV_COLUMN = 
:nameinstitution_description

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ FileDataProcessor

Returns a new instance of FileDataProcessor.



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# File 'lib/stock_markets/file_data_processor.rb', line 12

def initialize
  @data = []
  load_from_disk!
end

Instance Attribute Details

#data ⇒ Object

Returns the value of attribute data.



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# File 'lib/stock_markets/file_data_processor.rb', line 10

def data
  @data
end

Instance Method Details

#load_data_for_mics! ⇒ Object 



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# File 'lib/stock_markets/file_data_processor.rb', line 32

def load_data_for_mics!
  transform_to_hash.data
end

#load_data_for_names! ⇒ Object 



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# File 'lib/stock_markets/file_data_processor.rb', line 36

def load_data_for_names!
  transform_to_hash(key_name: MARKET_NAME_CSV_COLUMN).data
end

#load_from_disk! ⇒ Object 



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# File 'lib/stock_markets/file_data_processor.rb', line 17

def load_from_disk!
  self.parsed_csv = CSV.table(StockMarkets.configuration.data_file_path)
end

#transform_to_hash(key_name: :mic) ⇒ Object

Raises:

  • (TypeError) 


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# File 'lib/stock_markets/file_data_processor.rb', line 21

def transform_to_hash(key_name: :mic)
  raise TypeError, 'Invalid object of CSV provided!' unless parsed_csv.instance_of?(CSV::Table)

  self.data = parsed_csv.each_with_object({}) do |data_row, result_hash|
    if market_recently_updated_proc.call(data_row, key_name)
      result_hash[data_row[key_name.to_sym]] =  data_row.to_h
    end
  end
  self
end